Updated the database script to calculate the relative best performance of tuning results common for a device/vendor type

12 files changed, 123 insertions, 112 deletions

diff --git a/scripts/database/database.py b/scripts/database/database.py
index 0ce89d03..6d370d99 100755
--- a/scripts/database/database.py
+++ b/scripts/database/database.py
@@ -99,7 +99,7 @@ def main(argv):
 
     # Determines the defaults for other vendors and per vendor
     print("[database] Calculating the default values...")
-    database_defaults = defaults.calculate_defaults(database)
+    database_defaults = defaults.calculate_defaults(database, cl_args.verbose)
     database_best_results = db.concatenate_database(database_best_results, database_defaults)
 
     # Outputs the database as a C++ database
diff --git a/scripts/database/database/defaults.py b/scripts/database/database/defaults.py
index 48693247..985f24bd 100644
--- a/scripts/database/database/defaults.py
+++ b/scripts/database/database/defaults.py
@@ -25,7 +25,7 @@ def set_default_time(database_entry):
     return database_entry
 
 
-def calculate_defaults(database, calculate_common_best=True):
+def calculate_defaults(database, verbose, calculate_common_best=True):
     """Sets defaults for devices of the same type/vendor. An option determines how to compute the defaults."""
     database_defaults = pd.DataFrame()
 
@@ -34,7 +34,7 @@ def calculate_defaults(database, calculate_common_best=True):
                                             clblast.ARGUMENT_ATTRIBUTES)
     for group_name, database_group in database_type_vendor:
         if calculate_common_best:
-            default_values = get_common_best(database_group, group_name)
+            default_values = get_common_best(database_group, group_name, verbose)
         else:
             default_values = get_smallest_best(database_group)
         default_values = set_default_device(default_values)
@@ -69,16 +69,23 @@ def get_smallest_best(database):
     return database_best_results.min(axis=0)
 
 
-def get_common_best(database, group_name):
+def get_common_best(database, group_name, verbose):
     """Sets defaults based on the best values of entries supported by all devices. This might cause a problem in case
-    not every device was tuned with the same parameters."""
-    # TODO: Quite a bit slower than the above `get_smallest_best` method
+    not every device was tuned with the same parameters. In that case it falls back to the above method to retrieve
+    the smallest best execution time"""
 
     # Counts the number of devices in this group
     num_devices = len(database.groupby(clblast.DEVICE_ATTRIBUTES))
 
     # Removes columns without any values
     database = database.dropna(axis=1, how='all')
+    database = database.reset_index()
+
+    # Inserts the relative execution times into the database
+    def relative_performance(x):
+        x["relative_performance"] = x["time"].min() / x["time"]
+        return x
+    database = database.groupby(clblast.ATTRIBUTES + ["kernel"]).apply(relative_performance)
 
     # Retrieves the parameter names for this kernel
     all_column_names = list(database.columns.values)
@@ -94,17 +101,21 @@ def get_common_best(database, group_name):
         return get_smallest_best(database)
 
     # Computes the sum of the execution times over the different devices
-    database_common_by_parameters = database_common.groupby(parameter_column_names)
-    group_times = database_common_by_parameters['time'].transform(sum)
-    database_common.loc[:, 'group_time'] = group_times
+    def sum_performance(x):
+        x["group_performance"] = x["relative_performance"].sum()
+        return x
+    database_common = database_common.groupby(parameter_column_names).apply(sum_performance)
 
-    # Retrieves the entries with the best execution time
-    best_time = database_common["group_time"].min()
-    database_bests = database_common[database_common["group_time"] == best_time]
+    # Retrieves the entries with the highest performance
+    best_performance = database_common["group_performance"].max()
+    database_bests = database_common[database_common["group_performance"] == best_performance]
 
     # Retrieves one example only (the parameters are the same anyway)
-    database_bests = database_bests.drop_duplicates(["group_time"])
-    # print("[database] " + str(group_name) + " with devices: " + str(num_devices) + " " + str(database_bests.shape))
-    assert len(database_bests) == 1
+    database_bests = database_bests.drop_duplicates(["group_performance"])
 
+    # Completed, report and return the results
+    if verbose:
+        print("[database] " + str(group_name) + " with performance " + str(best_performance) + " with devices: " +
+        str(num_devices) + " " + str(database_bests.shape))
+    assert len(database_bests) == 1
     return database_bests
diff --git a/src/database/kernels/copy.hpp b/src/database/kernels/copy.hpp
index d592f110..e9902293 100644
--- a/src/database/kernels/copy.hpp
+++ b/src/database/kernels/copy.hpp
@@ -41,7 +41,7 @@ const Database::DatabaseEntry Database::CopySingle = {
         { "Oland",                                           { {"COPY_DIMX",32}, {"COPY_DIMY",8}, {"COPY_VW",4}, {"COPY_WPT",2} } },
         { "Pitcairn",                                        { {"COPY_DIMX",8}, {"COPY_DIMY",16}, {"COPY_VW",4}, {"COPY_WPT",1} } },
         { "Tahiti",                                          { {"COPY_DIMX",32}, {"COPY_DIMY",8}, {"COPY_VW",2}, {"COPY_WPT",2} } },
-        { "default",                                         { {"COPY_DIMX",8}, {"COPY_DIMY",8}, {"COPY_VW",2}, {"COPY_WPT",1} } },
+        { "default",                                         { {"COPY_DIMX",32}, {"COPY_DIMY",8}, {"COPY_VW",2}, {"COPY_WPT",2} } },
       }
     },
     { // ARM GPUs
@@ -65,7 +65,7 @@ const Database::DatabaseEntry Database::CopySingle = {
         { "Intel(R) HD Graphics Skylake ULT GT2",            { {"COPY_DIMX",32}, {"COPY_DIMY",8}, {"COPY_VW",2}, {"COPY_WPT",1} } },
         { "Iris",                                            { {"COPY_DIMX",16}, {"COPY_DIMY",8}, {"COPY_VW",1}, {"COPY_WPT",2} } },
         { "Iris Pro",                                        { {"COPY_DIMX",32}, {"COPY_DIMY",8}, {"COPY_VW",4}, {"COPY_WPT",4} } },
-        { "default",                                         { {"COPY_DIMX",8}, {"COPY_DIMY",8}, {"COPY_VW",1}, {"COPY_WPT",1} } },
+        { "default",                                         { {"COPY_DIMX",8}, {"COPY_DIMY",8}, {"COPY_VW",2}, {"COPY_WPT",1} } },
       }
     },
     { // Intel accelerators
@@ -88,7 +88,7 @@ const Database::DatabaseEntry Database::CopySingle = {
         { "GeForce GTX TITAN X",                             { {"COPY_DIMX",32}, {"COPY_DIMY",8}, {"COPY_VW",2}, {"COPY_WPT",1} } },
         { "Tesla K20m",                                      { {"COPY_DIMX",8}, {"COPY_DIMY",8}, {"COPY_VW",4}, {"COPY_WPT",4} } },
         { "Tesla K40m",                                      { {"COPY_DIMX",8}, {"COPY_DIMY",8}, {"COPY_VW",4}, {"COPY_WPT",2} } },
-        { "default",                                         { {"COPY_DIMX",8}, {"COPY_DIMY",8}, {"COPY_VW",1}, {"COPY_WPT",1} } },
+        { "default",                                         { {"COPY_DIMX",8}, {"COPY_DIMY",16}, {"COPY_VW",4}, {"COPY_WPT",1} } },
       }
     },
     { // Default
@@ -110,7 +110,7 @@ const Database::DatabaseEntry Database::CopyComplexSingle = {
         { "Oland",                                           { {"COPY_DIMX",8}, {"COPY_DIMY",16}, {"COPY_VW",1}, {"COPY_WPT",1} } },
         { "Pitcairn",                                        { {"COPY_DIMX",8}, {"COPY_DIMY",8}, {"COPY_VW",1}, {"COPY_WPT",2} } },
         { "Tahiti",                                          { {"COPY_DIMX",8}, {"COPY_DIMY",8}, {"COPY_VW",2}, {"COPY_WPT",2} } },
-        { "default",                                         { {"COPY_DIMX",8}, {"COPY_DIMY",8}, {"COPY_VW",1}, {"COPY_WPT",1} } },
+        { "default",                                         { {"COPY_DIMX",32}, {"COPY_DIMY",8}, {"COPY_VW",1}, {"COPY_WPT",1} } },
       }
     },
     { // Intel CPUs
@@ -118,7 +118,7 @@ const Database::DatabaseEntry Database::CopyComplexSingle = {
         { "Intel(R) Core(TM) i5-6200U CPU @ 2.30GHz",        { {"COPY_DIMX",16}, {"COPY_DIMY",16}, {"COPY_VW",8}, {"COPY_WPT",1} } },
         { "Intel(R) Core(TM) i7-3770 CPU @ 3.40GHz",         { {"COPY_DIMX",32}, {"COPY_DIMY",8}, {"COPY_VW",2}, {"COPY_WPT",2} } },
         { "Intel(R) Core(TM) i7-5930K CPU @ 3.50GHz",        { {"COPY_DIMX",16}, {"COPY_DIMY",8}, {"COPY_VW",8}, {"COPY_WPT",1} } },
-        { "default",                                         { {"COPY_DIMX",16}, {"COPY_DIMY",8}, {"COPY_VW",2}, {"COPY_WPT",1} } },
+        { "default",                                         { {"COPY_DIMX",32}, {"COPY_DIMY",8}, {"COPY_VW",8}, {"COPY_WPT",1} } },
       }
     },
     { // Intel GPUs
@@ -149,7 +149,7 @@ const Database::DatabaseEntry Database::CopyComplexSingle = {
         { "GeForce GTX TITAN X",                             { {"COPY_DIMX",16}, {"COPY_DIMY",8}, {"COPY_VW",1}, {"COPY_WPT",1} } },
         { "Tesla K20m",                                      { {"COPY_DIMX",8}, {"COPY_DIMY",8}, {"COPY_VW",1}, {"COPY_WPT",4} } },
         { "Tesla K40m",                                      { {"COPY_DIMX",16}, {"COPY_DIMY",8}, {"COPY_VW",1}, {"COPY_WPT",1} } },
-        { "default",                                         { {"COPY_DIMX",8}, {"COPY_DIMY",8}, {"COPY_VW",1}, {"COPY_WPT",1} } },
+        { "default",                                         { {"COPY_DIMX",16}, {"COPY_DIMY",8}, {"COPY_VW",1}, {"COPY_WPT",1} } },
       }
     },
     { // Default
@@ -171,7 +171,7 @@ const Database::DatabaseEntry Database::CopyDouble = {
         { "Oland",                                           { {"COPY_DIMX",32}, {"COPY_DIMY",8}, {"COPY_VW",2}, {"COPY_WPT",8} } },
         { "Pitcairn",                                        { {"COPY_DIMX",32}, {"COPY_DIMY",8}, {"COPY_VW",1}, {"COPY_WPT",1} } },
         { "Tahiti",                                          { {"COPY_DIMX",8}, {"COPY_DIMY",32}, {"COPY_VW",2}, {"COPY_WPT",1} } },
-        { "default",                                         { {"COPY_DIMX",8}, {"COPY_DIMY",8}, {"COPY_VW",1}, {"COPY_WPT",1} } },
+        { "default",                                         { {"COPY_DIMX",32}, {"COPY_DIMY",8}, {"COPY_VW",1}, {"COPY_WPT",2} } },
       }
     },
     { // ARM GPUs
@@ -185,7 +185,7 @@ const Database::DatabaseEntry Database::CopyDouble = {
         { "Intel(R) Core(TM) i5-6200U CPU @ 2.30GHz",        { {"COPY_DIMX",16}, {"COPY_DIMY",8}, {"COPY_VW",8}, {"COPY_WPT",1} } },
         { "Intel(R) Core(TM) i7-3770 CPU @ 3.40GHz",         { {"COPY_DIMX",16}, {"COPY_DIMY",32}, {"COPY_VW",2}, {"COPY_WPT",1} } },
         { "Intel(R) Core(TM) i7-5930K CPU @ 3.50GHz",        { {"COPY_DIMX",16}, {"COPY_DIMY",16}, {"COPY_VW",8}, {"COPY_WPT",1} } },
-        { "default",                                         { {"COPY_DIMX",16}, {"COPY_DIMY",8}, {"COPY_VW",2}, {"COPY_WPT",1} } },
+        { "default",                                         { {"COPY_DIMX",16}, {"COPY_DIMY",16}, {"COPY_VW",8}, {"COPY_WPT",1} } },
       }
     },
     { // Intel accelerators
@@ -208,7 +208,7 @@ const Database::DatabaseEntry Database::CopyDouble = {
         { "GeForce GTX TITAN X",                             { {"COPY_DIMX",32}, {"COPY_DIMY",16}, {"COPY_VW",1}, {"COPY_WPT",1} } },
         { "Tesla K20m",                                      { {"COPY_DIMX",8}, {"COPY_DIMY",8}, {"COPY_VW",2}, {"COPY_WPT",1} } },
         { "Tesla K40m",                                      { {"COPY_DIMX",8}, {"COPY_DIMY",8}, {"COPY_VW",2}, {"COPY_WPT",2} } },
-        { "default",                                         { {"COPY_DIMX",8}, {"COPY_DIMY",8}, {"COPY_VW",1}, {"COPY_WPT",1} } },
+        { "default",                                         { {"COPY_DIMX",32}, {"COPY_DIMY",32}, {"COPY_VW",2}, {"COPY_WPT",1} } },
       }
     },
     { // Default
@@ -230,7 +230,7 @@ const Database::DatabaseEntry Database::CopyComplexDouble = {
         { "Oland",                                           { {"COPY_DIMX",8}, {"COPY_DIMY",16}, {"COPY_VW",1}, {"COPY_WPT",1} } },
         { "Pitcairn",                                        { {"COPY_DIMX",16}, {"COPY_DIMY",8}, {"COPY_VW",1}, {"COPY_WPT",1} } },
         { "Tahiti",                                          { {"COPY_DIMX",8}, {"COPY_DIMY",16}, {"COPY_VW",1}, {"COPY_WPT",1} } },
-        { "default",                                         { {"COPY_DIMX",8}, {"COPY_DIMY",8}, {"COPY_VW",1}, {"COPY_WPT",1} } },
+        { "default",                                         { {"COPY_DIMX",8}, {"COPY_DIMY",16}, {"COPY_VW",1}, {"COPY_WPT",1} } },
       }
     },
     { // ARM GPUs
@@ -244,7 +244,7 @@ const Database::DatabaseEntry Database::CopyComplexDouble = {
         { "Intel(R) Core(TM) i5-6200U CPU @ 2.30GHz",        { {"COPY_DIMX",32}, {"COPY_DIMY",8}, {"COPY_VW",8}, {"COPY_WPT",1} } },
         { "Intel(R) Core(TM) i7-3770 CPU @ 3.40GHz",         { {"COPY_DIMX",32}, {"COPY_DIMY",32}, {"COPY_VW",8}, {"COPY_WPT",1} } },
         { "Intel(R) Core(TM) i7-5930K CPU @ 3.50GHz",        { {"COPY_DIMX",8}, {"COPY_DIMY",8}, {"COPY_VW",8}, {"COPY_WPT",1} } },
-        { "default",                                         { {"COPY_DIMX",8}, {"COPY_DIMY",8}, {"COPY_VW",8}, {"COPY_WPT",1} } },
+        { "default",                                         { {"COPY_DIMX",32}, {"COPY_DIMY",32}, {"COPY_VW",8}, {"COPY_WPT",1} } },
       }
     },
     { // Intel accelerators
diff --git a/src/database/kernels/pad.hpp b/src/database/kernels/pad.hpp
index cd034f15..a242a827 100644
--- a/src/database/kernels/pad.hpp
+++ b/src/database/kernels/pad.hpp
@@ -41,7 +41,7 @@ const Database::DatabaseEntry Database::PadSingle = {
         { "Oland",                                           { {"PAD_DIMX",8}, {"PAD_DIMY",8}, {"PAD_WPTX",1}, {"PAD_WPTY",2} } },
         { "Pitcairn",                                        { {"PAD_DIMX",32}, {"PAD_DIMY",8}, {"PAD_WPTX",1}, {"PAD_WPTY",2} } },
         { "Tahiti",                                          { {"PAD_DIMX",32}, {"PAD_DIMY",8}, {"PAD_WPTX",1}, {"PAD_WPTY",2} } },
-        { "default",                                         { {"PAD_DIMX",8}, {"PAD_DIMY",8}, {"PAD_WPTX",1}, {"PAD_WPTY",1} } },
+        { "default",                                         { {"PAD_DIMX",8}, {"PAD_DIMY",8}, {"PAD_WPTX",1}, {"PAD_WPTY",2} } },
       }
     },
     { // ARM GPUs
@@ -55,7 +55,7 @@ const Database::DatabaseEntry Database::PadSingle = {
         { "Intel(R) Core(TM) i5-6200U CPU @ 2.30GHz",        { {"PAD_DIMX",32}, {"PAD_DIMY",16}, {"PAD_WPTX",4}, {"PAD_WPTY",1} } },
         { "Intel(R) Core(TM) i7-3770 CPU @ 3.40GHz",         { {"PAD_DIMX",16}, {"PAD_DIMY",32}, {"PAD_WPTX",4}, {"PAD_WPTY",4} } },
         { "Intel(R) Core(TM) i7-5930K CPU @ 3.50GHz",        { {"PAD_DIMX",32}, {"PAD_DIMY",8}, {"PAD_WPTX",4}, {"PAD_WPTY",1} } },
-        { "default",                                         { {"PAD_DIMX",16}, {"PAD_DIMY",8}, {"PAD_WPTX",4}, {"PAD_WPTY",1} } },
+        { "default",                                         { {"PAD_DIMX",32}, {"PAD_DIMY",8}, {"PAD_WPTX",4}, {"PAD_WPTY",2} } },
       }
     },
     { // Intel GPUs
@@ -65,7 +65,7 @@ const Database::DatabaseEntry Database::PadSingle = {
         { "Intel(R) HD Graphics Skylake ULT GT2",            { {"PAD_DIMX",16}, {"PAD_DIMY",8}, {"PAD_WPTX",2}, {"PAD_WPTY",1} } },
         { "Iris",                                            { {"PAD_DIMX",32}, {"PAD_DIMY",16}, {"PAD_WPTX",2}, {"PAD_WPTY",1} } },
         { "Iris Pro",                                        { {"PAD_DIMX",16}, {"PAD_DIMY",8}, {"PAD_WPTX",2}, {"PAD_WPTY",1} } },
-        { "default",                                         { {"PAD_DIMX",8}, {"PAD_DIMY",8}, {"PAD_WPTX",1}, {"PAD_WPTY",1} } },
+        { "default",                                         { {"PAD_DIMX",16}, {"PAD_DIMY",8}, {"PAD_WPTX",2}, {"PAD_WPTY",2} } },
       }
     },
     { // Intel accelerators
@@ -88,7 +88,7 @@ const Database::DatabaseEntry Database::PadSingle = {
         { "GeForce GTX TITAN X",                             { {"PAD_DIMX",16}, {"PAD_DIMY",16}, {"PAD_WPTX",1}, {"PAD_WPTY",1} } },
         { "Tesla K20m",                                      { {"PAD_DIMX",32}, {"PAD_DIMY",8}, {"PAD_WPTX",2}, {"PAD_WPTY",1} } },
         { "Tesla K40m",                                      { {"PAD_DIMX",32}, {"PAD_DIMY",8}, {"PAD_WPTX",1}, {"PAD_WPTY",1} } },
-        { "default",                                         { {"PAD_DIMX",16}, {"PAD_DIMY",8}, {"PAD_WPTX",1}, {"PAD_WPTY",1} } },
+        { "default",                                         { {"PAD_DIMX",32}, {"PAD_DIMY",8}, {"PAD_WPTX",4}, {"PAD_WPTY",1} } },
       }
     },
     { // Default
@@ -110,7 +110,7 @@ const Database::DatabaseEntry Database::PadComplexSingle = {
         { "Oland",                                           { {"PAD_DIMX",8}, {"PAD_DIMY",32}, {"PAD_WPTX",1}, {"PAD_WPTY",1} } },
         { "Pitcairn",                                        { {"PAD_DIMX",8}, {"PAD_DIMY",8}, {"PAD_WPTX",1}, {"PAD_WPTY",2} } },
         { "Tahiti",                                          { {"PAD_DIMX",16}, {"PAD_DIMY",16}, {"PAD_WPTX",1}, {"PAD_WPTY",1} } },
-        { "default",                                         { {"PAD_DIMX",8}, {"PAD_DIMY",8}, {"PAD_WPTX",1}, {"PAD_WPTY",1} } },
+        { "default",                                         { {"PAD_DIMX",32}, {"PAD_DIMY",8}, {"PAD_WPTX",1}, {"PAD_WPTY",1} } },
       }
     },
     { // ARM GPUs
@@ -124,7 +124,7 @@ const Database::DatabaseEntry Database::PadComplexSingle = {
         { "Intel(R) Core(TM) i5-6200U CPU @ 2.30GHz",        { {"PAD_DIMX",32}, {"PAD_DIMY",8}, {"PAD_WPTX",2}, {"PAD_WPTY",2} } },
         { "Intel(R) Core(TM) i7-3770 CPU @ 3.40GHz",         { {"PAD_DIMX",32}, {"PAD_DIMY",32}, {"PAD_WPTX",4}, {"PAD_WPTY",1} } },
         { "Intel(R) Core(TM) i7-5930K CPU @ 3.50GHz",        { {"PAD_DIMX",32}, {"PAD_DIMY",16}, {"PAD_WPTX",4}, {"PAD_WPTY",1} } },
-        { "default",                                         { {"PAD_DIMX",32}, {"PAD_DIMY",8}, {"PAD_WPTX",2}, {"PAD_WPTY",1} } },
+        { "default",                                         { {"PAD_DIMX",32}, {"PAD_DIMY",16}, {"PAD_WPTX",4}, {"PAD_WPTY",1} } },
       }
     },
     { // Intel GPUs
@@ -134,7 +134,7 @@ const Database::DatabaseEntry Database::PadComplexSingle = {
         { "Intel(R) HD Graphics Skylake ULT GT2",            { {"PAD_DIMX",32}, {"PAD_DIMY",8}, {"PAD_WPTX",2}, {"PAD_WPTY",4} } },
         { "Iris",                                            { {"PAD_DIMX",32}, {"PAD_DIMY",16}, {"PAD_WPTX",2}, {"PAD_WPTY",4} } },
         { "Iris Pro",                                        { {"PAD_DIMX",32}, {"PAD_DIMY",8}, {"PAD_WPTX",2}, {"PAD_WPTY",1} } },
-        { "default",                                         { {"PAD_DIMX",8}, {"PAD_DIMY",8}, {"PAD_WPTX",1}, {"PAD_WPTY",1} } },
+        { "default",                                         { {"PAD_DIMX",32}, {"PAD_DIMY",8}, {"PAD_WPTX",1}, {"PAD_WPTY",4} } },
       }
     },
     { // Intel accelerators
@@ -157,7 +157,7 @@ const Database::DatabaseEntry Database::PadComplexSingle = {
         { "GeForce GTX TITAN X",                             { {"PAD_DIMX",16}, {"PAD_DIMY",8}, {"PAD_WPTX",1}, {"PAD_WPTY",1} } },
         { "Tesla K20m",                                      { {"PAD_DIMX",32}, {"PAD_DIMY",8}, {"PAD_WPTX",1}, {"PAD_WPTY",2} } },
         { "Tesla K40m",                                      { {"PAD_DIMX",16}, {"PAD_DIMY",8}, {"PAD_WPTX",1}, {"PAD_WPTY",1} } },
-        { "default",                                         { {"PAD_DIMX",8}, {"PAD_DIMY",8}, {"PAD_WPTX",1}, {"PAD_WPTY",1} } },
+        { "default",                                         { {"PAD_DIMX",16}, {"PAD_DIMY",8}, {"PAD_WPTX",2}, {"PAD_WPTY",1} } },
       }
     },
     { // Default
@@ -179,7 +179,7 @@ const Database::DatabaseEntry Database::PadDouble = {
         { "Oland",                                           { {"PAD_DIMX",8}, {"PAD_DIMY",32}, {"PAD_WPTX",1}, {"PAD_WPTY",1} } },
         { "Pitcairn",                                        { {"PAD_DIMX",8}, {"PAD_DIMY",8}, {"PAD_WPTX",1}, {"PAD_WPTY",2} } },
         { "Tahiti",                                          { {"PAD_DIMX",32}, {"PAD_DIMY",8}, {"PAD_WPTX",1}, {"PAD_WPTY",1} } },
-        { "default",                                         { {"PAD_DIMX",8}, {"PAD_DIMY",8}, {"PAD_WPTX",1}, {"PAD_WPTY",1} } },
+        { "default",                                         { {"PAD_DIMX",32}, {"PAD_DIMY",8}, {"PAD_WPTX",1}, {"PAD_WPTY",2} } },
       }
     },
     { // ARM GPUs
@@ -193,7 +193,7 @@ const Database::DatabaseEntry Database::PadDouble = {
         { "Intel(R) Core(TM) i5-6200U CPU @ 2.30GHz",        { {"PAD_DIMX",32}, {"PAD_DIMY",8}, {"PAD_WPTX",4}, {"PAD_WPTY",1} } },
         { "Intel(R) Core(TM) i7-3770 CPU @ 3.40GHz",         { {"PAD_DIMX",32}, {"PAD_DIMY",32}, {"PAD_WPTX",4}, {"PAD_WPTY",1} } },
         { "Intel(R) Core(TM) i7-5930K CPU @ 3.50GHz",        { {"PAD_DIMX",32}, {"PAD_DIMY",8}, {"PAD_WPTX",2}, {"PAD_WPTY",1} } },
-        { "default",                                         { {"PAD_DIMX",32}, {"PAD_DIMY",8}, {"PAD_WPTX",2}, {"PAD_WPTY",1} } },
+        { "default",                                         { {"PAD_DIMX",32}, {"PAD_DIMY",16}, {"PAD_WPTX",4}, {"PAD_WPTY",1} } },
       }
     },
     { // Intel accelerators
@@ -216,7 +216,7 @@ const Database::DatabaseEntry Database::PadDouble = {
         { "GeForce GTX TITAN X",                             { {"PAD_DIMX",16}, {"PAD_DIMY",8}, {"PAD_WPTX",1}, {"PAD_WPTY",1} } },
         { "Tesla K20m",                                      { {"PAD_DIMX",32}, {"PAD_DIMY",8}, {"PAD_WPTX",1}, {"PAD_WPTY",1} } },
         { "Tesla K40m",                                      { {"PAD_DIMX",16}, {"PAD_DIMY",8}, {"PAD_WPTX",1}, {"PAD_WPTY",2} } },
-        { "default",                                         { {"PAD_DIMX",8}, {"PAD_DIMY",8}, {"PAD_WPTX",1}, {"PAD_WPTY",1} } },
+        { "default",                                         { {"PAD_DIMX",32}, {"PAD_DIMY",8}, {"PAD_WPTX",1}, {"PAD_WPTY",1} } },
       }
     },
     { // Default
@@ -238,7 +238,7 @@ const Database::DatabaseEntry Database::PadComplexDouble = {
         { "Oland",                                           { {"PAD_DIMX",8}, {"PAD_DIMY",16}, {"PAD_WPTX",2}, {"PAD_WPTY",1} } },
         { "Pitcairn",                                        { {"PAD_DIMX",16}, {"PAD_DIMY",8}, {"PAD_WPTX",1}, {"PAD_WPTY",1} } },
         { "Tahiti",                                          { {"PAD_DIMX",8}, {"PAD_DIMY",16}, {"PAD_WPTX",1}, {"PAD_WPTY",1} } },
-        { "default",                                         { {"PAD_DIMX",8}, {"PAD_DIMY",8}, {"PAD_WPTX",1}, {"PAD_WPTY",1} } },
+        { "default",                                         { {"PAD_DIMX",32}, {"PAD_DIMY",8}, {"PAD_WPTX",1}, {"PAD_WPTY",1} } },
       }
     },
     { // ARM GPUs
@@ -252,7 +252,7 @@ const Database::DatabaseEntry Database::PadComplexDouble = {
         { "Intel(R) Core(TM) i5-6200U CPU @ 2.30GHz",        { {"PAD_DIMX",32}, {"PAD_DIMY",8}, {"PAD_WPTX",2}, {"PAD_WPTY",1} } },
         { "Intel(R) Core(TM) i7-3770 CPU @ 3.40GHz",         { {"PAD_DIMX",16}, {"PAD_DIMY",32}, {"PAD_WPTX",4}, {"PAD_WPTY",1} } },
         { "Intel(R) Core(TM) i7-5930K CPU @ 3.50GHz",        { {"PAD_DIMX",32}, {"PAD_DIMY",8}, {"PAD_WPTX",2}, {"PAD_WPTY",1} } },
-        { "default",                                         { {"PAD_DIMX",16}, {"PAD_DIMY",8}, {"PAD_WPTX",2}, {"PAD_WPTY",1} } },
+        { "default",                                         { {"PAD_DIMX",32}, {"PAD_DIMY",16}, {"PAD_WPTX",4}, {"PAD_WPTY",1} } },
       }
     },
     { // Intel accelerators
@@ -275,7 +275,7 @@ const Database::DatabaseEntry Database::PadComplexDouble = {
         { "GeForce GTX TITAN X",                             { {"PAD_DIMX",16}, {"PAD_DIMY",8}, {"PAD_WPTX",1}, {"PAD_WPTY",1} } },
         { "Tesla K20m",                                      { {"PAD_DIMX",8}, {"PAD_DIMY",8}, {"PAD_WPTX",1}, {"PAD_WPTY",2} } },
         { "Tesla K40m",                                      { {"PAD_DIMX",8}, {"PAD_DIMY",8}, {"PAD_WPTX",1}, {"PAD_WPTY",1} } },
-        { "default",                                         { {"PAD_DIMX",8}, {"PAD_DIMY",8}, {"PAD_WPTX",1}, {"PAD_WPTY",1} } },
+        { "default",                                         { {"PAD_DIMX",16}, {"PAD_DIMY",8}, {"PAD_WPTX",1}, {"PAD_WPTY",1} } },
       }
     },
     { // Default
diff --git a/src/database/kernels/padtranspose.hpp b/src/database/kernels/padtranspose.hpp
index c2034c3e..0f63eafa 100644
--- a/src/database/kernels/padtranspose.hpp
+++ b/src/database/kernels/padtranspose.hpp
@@ -55,7 +55,7 @@ const Database::DatabaseEntry Database::PadtransposeSingle = {
         { "Intel(R) Core(TM) i5-6200U CPU @ 2.30GHz",        { {"PADTRA_PAD",0}, {"PADTRA_TILE",16}, {"PADTRA_WPT",1} } },
         { "Intel(R) Core(TM) i7-3770 CPU @ 3.40GHz",         { {"PADTRA_PAD",0}, {"PADTRA_TILE",8}, {"PADTRA_WPT",8} } },
         { "Intel(R) Core(TM) i7-5930K CPU @ 3.50GHz",        { {"PADTRA_PAD",0}, {"PADTRA_TILE",32}, {"PADTRA_WPT",1} } },
-        { "default",                                         { {"PADTRA_PAD",0}, {"PADTRA_TILE",8}, {"PADTRA_WPT",1} } },
+        { "default",                                         { {"PADTRA_PAD",0}, {"PADTRA_TILE",8}, {"PADTRA_WPT",8} } },
       }
     },
     { // Intel GPUs
@@ -88,7 +88,7 @@ const Database::DatabaseEntry Database::PadtransposeSingle = {
         { "GeForce GTX TITAN X",                             { {"PADTRA_PAD",1}, {"PADTRA_TILE",32}, {"PADTRA_WPT",1} } },
         { "Tesla K20m",                                      { {"PADTRA_PAD",1}, {"PADTRA_TILE",16}, {"PADTRA_WPT",2} } },
         { "Tesla K40m",                                      { {"PADTRA_PAD",1}, {"PADTRA_TILE",32}, {"PADTRA_WPT",2} } },
-        { "default",                                         { {"PADTRA_PAD",0}, {"PADTRA_TILE",16}, {"PADTRA_WPT",1} } },
+        { "default",                                         { {"PADTRA_PAD",1}, {"PADTRA_TILE",32}, {"PADTRA_WPT",2} } },
       }
     },
     { // Default
@@ -110,7 +110,7 @@ const Database::DatabaseEntry Database::PadtransposeComplexSingle = {
         { "Oland",                                           { {"PADTRA_PAD",0}, {"PADTRA_TILE",8}, {"PADTRA_WPT",4} } },
         { "Pitcairn",                                        { {"PADTRA_PAD",0}, {"PADTRA_TILE",8}, {"PADTRA_WPT",4} } },
         { "Tahiti",                                          { {"PADTRA_PAD",0}, {"PADTRA_TILE",16}, {"PADTRA_WPT",2} } },
-        { "default",                                         { {"PADTRA_PAD",0}, {"PADTRA_TILE",8}, {"PADTRA_WPT",2} } },
+        { "default",                                         { {"PADTRA_PAD",0}, {"PADTRA_TILE",8}, {"PADTRA_WPT",4} } },
       }
     },
     { // ARM GPUs
@@ -134,7 +134,7 @@ const Database::DatabaseEntry Database::PadtransposeComplexSingle = {
         { "Intel(R) HD Graphics Skylake ULT GT2",            { {"PADTRA_PAD",0}, {"PADTRA_TILE",16}, {"PADTRA_WPT",4} } },
         { "Iris",                                            { {"PADTRA_PAD",0}, {"PADTRA_TILE",16}, {"PADTRA_WPT",2} } },
         { "Iris Pro",                                        { {"PADTRA_PAD",1}, {"PADTRA_TILE",16}, {"PADTRA_WPT",2} } },
-        { "default",                                         { {"PADTRA_PAD",0}, {"PADTRA_TILE",16}, {"PADTRA_WPT",2} } },
+        { "default",                                         { {"PADTRA_PAD",1}, {"PADTRA_TILE",16}, {"PADTRA_WPT",2} } },
       }
     },
     { // Intel accelerators
@@ -157,7 +157,7 @@ const Database::DatabaseEntry Database::PadtransposeComplexSingle = {
         { "GeForce GTX TITAN X",                             { {"PADTRA_PAD",1}, {"PADTRA_TILE",32}, {"PADTRA_WPT",1} } },
         { "Tesla K20m",                                      { {"PADTRA_PAD",0}, {"PADTRA_TILE",16}, {"PADTRA_WPT",1} } },
         { "Tesla K40m",                                      { {"PADTRA_PAD",1}, {"PADTRA_TILE",16}, {"PADTRA_WPT",1} } },
-        { "default",                                         { {"PADTRA_PAD",0}, {"PADTRA_TILE",16}, {"PADTRA_WPT",1} } },
+        { "default",                                         { {"PADTRA_PAD",1}, {"PADTRA_TILE",16}, {"PADTRA_WPT",1} } },
       }
     },
     { // Default
@@ -179,7 +179,7 @@ const Database::DatabaseEntry Database::PadtransposeDouble = {
         { "Oland",                                           { {"PADTRA_PAD",0}, {"PADTRA_TILE",16}, {"PADTRA_WPT",4} } },
         { "Pitcairn",                                        { {"PADTRA_PAD",0}, {"PADTRA_TILE",8}, {"PADTRA_WPT",4} } },
         { "Tahiti",                                          { {"PADTRA_PAD",1}, {"PADTRA_TILE",16}, {"PADTRA_WPT",2} } },
-        { "default",                                         { {"PADTRA_PAD",0}, {"PADTRA_TILE",8}, {"PADTRA_WPT",2} } },
+        { "default",                                         { {"PADTRA_PAD",0}, {"PADTRA_TILE",16}, {"PADTRA_WPT",4} } },
       }
     },
     { // ARM GPUs
@@ -193,7 +193,7 @@ const Database::DatabaseEntry Database::PadtransposeDouble = {
         { "Intel(R) Core(TM) i5-6200U CPU @ 2.30GHz",        { {"PADTRA_PAD",1}, {"PADTRA_TILE",8}, {"PADTRA_WPT",4} } },
         { "Intel(R) Core(TM) i7-3770 CPU @ 3.40GHz",         { {"PADTRA_PAD",0}, {"PADTRA_TILE",8}, {"PADTRA_WPT",8} } },
         { "Intel(R) Core(TM) i7-5930K CPU @ 3.50GHz",        { {"PADTRA_PAD",1}, {"PADTRA_TILE",32}, {"PADTRA_WPT",1} } },
-        { "default",                                         { {"PADTRA_PAD",0}, {"PADTRA_TILE",8}, {"PADTRA_WPT",1} } },
+        { "default",                                         { {"PADTRA_PAD",1}, {"PADTRA_TILE",8}, {"PADTRA_WPT",4} } },
       }
     },
     { // Intel accelerators
@@ -216,7 +216,7 @@ const Database::DatabaseEntry Database::PadtransposeDouble = {
         { "GeForce GTX TITAN X",                             { {"PADTRA_PAD",1}, {"PADTRA_TILE",32}, {"PADTRA_WPT",1} } },
         { "Tesla K20m",                                      { {"PADTRA_PAD",0}, {"PADTRA_TILE",16}, {"PADTRA_WPT",1} } },
         { "Tesla K40m",                                      { {"PADTRA_PAD",1}, {"PADTRA_TILE",16}, {"PADTRA_WPT",1} } },
-        { "default",                                         { {"PADTRA_PAD",0}, {"PADTRA_TILE",16}, {"PADTRA_WPT",1} } },
+        { "default",                                         { {"PADTRA_PAD",1}, {"PADTRA_TILE",16}, {"PADTRA_WPT",1} } },
       }
     },
     { // Default
@@ -238,7 +238,7 @@ const Database::DatabaseEntry Database::PadtransposeComplexDouble = {
         { "Oland",                                           { {"PADTRA_PAD",0}, {"PADTRA_TILE",8}, {"PADTRA_WPT",4} } },
         { "Pitcairn",                                        { {"PADTRA_PAD",0}, {"PADTRA_TILE",8}, {"PADTRA_WPT",4} } },
         { "Tahiti",                                          { {"PADTRA_PAD",0}, {"PADTRA_TILE",8}, {"PADTRA_WPT",2} } },
-        { "default",                                         { {"PADTRA_PAD",0}, {"PADTRA_TILE",8}, {"PADTRA_WPT",2} } },
+        { "default",                                         { {"PADTRA_PAD",0}, {"PADTRA_TILE",8}, {"PADTRA_WPT",4} } },
       }
     },
     { // ARM GPUs
@@ -252,7 +252,7 @@ const Database::DatabaseEntry Database::PadtransposeComplexDouble = {
         { "Intel(R) Core(TM) i5-6200U CPU @ 2.30GHz",        { {"PADTRA_PAD",1}, {"PADTRA_TILE",8}, {"PADTRA_WPT",2} } },
         { "Intel(R) Core(TM) i7-3770 CPU @ 3.40GHz",         { {"PADTRA_PAD",1}, {"PADTRA_TILE",8}, {"PADTRA_WPT",4} } },
         { "Intel(R) Core(TM) i7-5930K CPU @ 3.50GHz",        { {"PADTRA_PAD",1}, {"PADTRA_TILE",8}, {"PADTRA_WPT",4} } },
-        { "default",                                         { {"PADTRA_PAD",1}, {"PADTRA_TILE",8}, {"PADTRA_WPT",2} } },
+        { "default",                                         { {"PADTRA_PAD",1}, {"PADTRA_TILE",8}, {"PADTRA_WPT",4} } },
       }
     },
     { // Intel accelerators
@@ -275,7 +275,7 @@ const Database::DatabaseEntry Database::PadtransposeComplexDouble = {
         { "GeForce GTX TITAN X",                             { {"PADTRA_PAD",1}, {"PADTRA_TILE",32}, {"PADTRA_WPT",1} } },
         { "Tesla K20m",                                      { {"PADTRA_PAD",1}, {"PADTRA_TILE",16}, {"PADTRA_WPT",1} } },
         { "Tesla K40m",                                      { {"PADTRA_PAD",1}, {"PADTRA_TILE",16}, {"PADTRA_WPT",1} } },
-        { "default",                                         { {"PADTRA_PAD",0}, {"PADTRA_TILE",16}, {"PADTRA_WPT",1} } },
+        { "default",                                         { {"PADTRA_PAD",1}, {"PADTRA_TILE",16}, {"PADTRA_WPT",1} } },
       }
     },
     { // Default
diff --git a/src/database/kernels/transpose.hpp b/src/database/kernels/transpose.hpp
index 8e852c4b..d12d28f0 100644
--- a/src/database/kernels/transpose.hpp
+++ b/src/database/kernels/transpose.hpp
@@ -41,7 +41,7 @@ const Database::DatabaseEntry Database::TransposeSingle = {
         { "Oland",                                           { {"TRA_DIM",8}, {"TRA_PAD",0}, {"TRA_SHUFFLE",1}, {"TRA_WPT",4} } },
         { "Pitcairn",                                        { {"TRA_DIM",16}, {"TRA_PAD",0}, {"TRA_SHUFFLE",1}, {"TRA_WPT",1} } },
         { "Tahiti",                                          { {"TRA_DIM",4}, {"TRA_PAD",0}, {"TRA_SHUFFLE",1}, {"TRA_WPT",4} } },
-        { "default",                                         { {"TRA_DIM",4}, {"TRA_PAD",0}, {"TRA_SHUFFLE",1}, {"TRA_WPT",1} } },
+        { "default",                                         { {"TRA_DIM",4}, {"TRA_PAD",1}, {"TRA_SHUFFLE",1}, {"TRA_WPT",4} } },
       }
     },
     { // ARM GPUs
@@ -65,7 +65,7 @@ const Database::DatabaseEntry Database::TransposeSingle = {
         { "Intel(R) HD Graphics Skylake ULT GT2",            { {"TRA_DIM",8}, {"TRA_PAD",0}, {"TRA_SHUFFLE",1}, {"TRA_WPT",4} } },
         { "Iris",                                            { {"TRA_DIM",8}, {"TRA_PAD",1}, {"TRA_SHUFFLE",0}, {"TRA_WPT",4} } },
         { "Iris Pro",                                        { {"TRA_DIM",16}, {"TRA_PAD",1}, {"TRA_SHUFFLE",0}, {"TRA_WPT",4} } },
-        { "default",                                         { {"TRA_DIM",8}, {"TRA_PAD",0}, {"TRA_SHUFFLE",0}, {"TRA_WPT",4} } },
+        { "default",                                         { {"TRA_DIM",8}, {"TRA_PAD",1}, {"TRA_SHUFFLE",0}, {"TRA_WPT",4} } },
       }
     },
     { // Intel accelerators
@@ -88,7 +88,7 @@ const Database::DatabaseEntry Database::TransposeSingle = {
         { "GeForce GTX TITAN X",                             { {"TRA_DIM",16}, {"TRA_PAD",0}, {"TRA_SHUFFLE",0}, {"TRA_WPT",4} } },
         { "Tesla K20m",                                      { {"TRA_DIM",8}, {"TRA_PAD",0}, {"TRA_SHUFFLE",0}, {"TRA_WPT",4} } },
         { "Tesla K40m",                                      { {"TRA_DIM",8}, {"TRA_PAD",1}, {"TRA_SHUFFLE",0}, {"TRA_WPT",4} } },
-        { "default",                                         { {"TRA_DIM",4}, {"TRA_PAD",0}, {"TRA_SHUFFLE",0}, {"TRA_WPT",1} } },
+        { "default",                                         { {"TRA_DIM",8}, {"TRA_PAD",1}, {"TRA_SHUFFLE",0}, {"TRA_WPT",4} } },
       }
     },
     { // Default
@@ -110,7 +110,7 @@ const Database::DatabaseEntry Database::TransposeComplexSingle = {
         { "Oland",                                           { {"TRA_DIM",4}, {"TRA_PAD",0}, {"TRA_SHUFFLE",1}, {"TRA_WPT",2} } },
         { "Pitcairn",                                        { {"TRA_DIM",8}, {"TRA_PAD",0}, {"TRA_SHUFFLE",1}, {"TRA_WPT",1} } },
         { "Tahiti",                                          { {"TRA_DIM",16}, {"TRA_PAD",0}, {"TRA_SHUFFLE",1}, {"TRA_WPT",1} } },
-        { "default",                                         { {"TRA_DIM",4}, {"TRA_PAD",0}, {"TRA_SHUFFLE",1}, {"TRA_WPT",1} } },
+        { "default",                                         { {"TRA_DIM",4}, {"TRA_PAD",0}, {"TRA_SHUFFLE",1}, {"TRA_WPT",2} } },
       }
     },
     { // ARM GPUs
@@ -124,7 +124,7 @@ const Database::DatabaseEntry Database::TransposeComplexSingle = {
         { "Intel(R) Core(TM) i5-6200U CPU @ 2.30GHz",        { {"TRA_DIM",8}, {"TRA_PAD",0}, {"TRA_SHUFFLE",0}, {"TRA_WPT",2} } },
         { "Intel(R) Core(TM) i7-3770 CPU @ 3.40GHz",         { {"TRA_DIM",4}, {"TRA_PAD",1}, {"TRA_SHUFFLE",0}, {"TRA_WPT",8} } },
         { "Intel(R) Core(TM) i7-5930K CPU @ 3.50GHz",        { {"TRA_DIM",16}, {"TRA_PAD",0}, {"TRA_SHUFFLE",0}, {"TRA_WPT",4} } },
-        { "default",                                         { {"TRA_DIM",4}, {"TRA_PAD",0}, {"TRA_SHUFFLE",0}, {"TRA_WPT",2} } },
+        { "default",                                         { {"TRA_DIM",4}, {"TRA_PAD",1}, {"TRA_SHUFFLE",0}, {"TRA_WPT",8} } },
       }
     },
     { // Intel GPUs
@@ -134,7 +134,7 @@ const Database::DatabaseEntry Database::TransposeComplexSingle = {
         { "Intel(R) HD Graphics Skylake ULT GT2",            { {"TRA_DIM",16}, {"TRA_PAD",1}, {"TRA_SHUFFLE",1}, {"TRA_WPT",2} } },
         { "Iris",                                            { {"TRA_DIM",8}, {"TRA_PAD",0}, {"TRA_SHUFFLE",0}, {"TRA_WPT",2} } },
         { "Iris Pro",                                        { {"TRA_DIM",16}, {"TRA_PAD",1}, {"TRA_SHUFFLE",0}, {"TRA_WPT",2} } },
-        { "default",                                         { {"TRA_DIM",8}, {"TRA_PAD",0}, {"TRA_SHUFFLE",0}, {"TRA_WPT",2} } },
+        { "default",                                         { {"TRA_DIM",16}, {"TRA_PAD",1}, {"TRA_SHUFFLE",0}, {"TRA_WPT",2} } },
       }
     },
     { // NVIDIA GPUs
@@ -151,7 +151,7 @@ const Database::DatabaseEntry Database::TransposeComplexSingle = {
         { "GeForce GTX TITAN X",                             { {"TRA_DIM",32}, {"TRA_PAD",1}, {"TRA_SHUFFLE",0}, {"TRA_WPT",1} } },
         { "Tesla K20m",                                      { {"TRA_DIM",16}, {"TRA_PAD",0}, {"TRA_SHUFFLE",0}, {"TRA_WPT",1} } },
         { "Tesla K40m",                                      { {"TRA_DIM",16}, {"TRA_PAD",1}, {"TRA_SHUFFLE",0}, {"TRA_WPT",1} } },
-        { "default",                                         { {"TRA_DIM",16}, {"TRA_PAD",0}, {"TRA_SHUFFLE",0}, {"TRA_WPT",1} } },
+        { "default",                                         { {"TRA_DIM",16}, {"TRA_PAD",1}, {"TRA_SHUFFLE",0}, {"TRA_WPT",1} } },
       }
     },
     { // Default
@@ -173,7 +173,7 @@ const Database::DatabaseEntry Database::TransposeDouble = {
         { "Oland",                                           { {"TRA_DIM",8}, {"TRA_PAD",1}, {"TRA_SHUFFLE",1}, {"TRA_WPT",2} } },
         { "Pitcairn",                                        { {"TRA_DIM",4}, {"TRA_PAD",0}, {"TRA_SHUFFLE",1}, {"TRA_WPT",2} } },
         { "Tahiti",                                          { {"TRA_DIM",4}, {"TRA_PAD",1}, {"TRA_SHUFFLE",1}, {"TRA_WPT",4} } },
-        { "default",                                         { {"TRA_DIM",4}, {"TRA_PAD",0}, {"TRA_SHUFFLE",1}, {"TRA_WPT",1} } },
+        { "default",                                         { {"TRA_DIM",4}, {"TRA_PAD",0}, {"TRA_SHUFFLE",1}, {"TRA_WPT",4} } },
       }
     },
     { // ARM GPUs
@@ -187,7 +187,7 @@ const Database::DatabaseEntry Database::TransposeDouble = {
         { "Intel(R) Core(TM) i5-6200U CPU @ 2.30GHz",        { {"TRA_DIM",4}, {"TRA_PAD",0}, {"TRA_SHUFFLE",0}, {"TRA_WPT",4} } },
         { "Intel(R) Core(TM) i7-3770 CPU @ 3.40GHz",         { {"TRA_DIM",4}, {"TRA_PAD",1}, {"TRA_SHUFFLE",0}, {"TRA_WPT",8} } },
         { "Intel(R) Core(TM) i7-5930K CPU @ 3.50GHz",        { {"TRA_DIM",4}, {"TRA_PAD",0}, {"TRA_SHUFFLE",0}, {"TRA_WPT",8} } },
-        { "default",                                         { {"TRA_DIM",4}, {"TRA_PAD",0}, {"TRA_SHUFFLE",0}, {"TRA_WPT",4} } },
+        { "default",                                         { {"TRA_DIM",4}, {"TRA_PAD",0}, {"TRA_SHUFFLE",0}, {"TRA_WPT",8} } },
       }
     },
     { // Intel accelerators
@@ -210,7 +210,7 @@ const Database::DatabaseEntry Database::TransposeDouble = {
         { "GeForce GTX TITAN X",                             { {"TRA_DIM",32}, {"TRA_PAD",1}, {"TRA_SHUFFLE",0}, {"TRA_WPT",1} } },
         { "Tesla K20m",                                      { {"TRA_DIM",16}, {"TRA_PAD",1}, {"TRA_SHUFFLE",0}, {"TRA_WPT",2} } },
         { "Tesla K40m",                                      { {"TRA_DIM",16}, {"TRA_PAD",1}, {"TRA_SHUFFLE",1}, {"TRA_WPT",2} } },
-        { "default",                                         { {"TRA_DIM",8}, {"TRA_PAD",0}, {"TRA_SHUFFLE",0}, {"TRA_WPT",1} } },
+        { "default",                                         { {"TRA_DIM",16}, {"TRA_PAD",1}, {"TRA_SHUFFLE",1}, {"TRA_WPT",2} } },
       }
     },
     { // Default
@@ -232,7 +232,7 @@ const Database::DatabaseEntry Database::TransposeComplexDouble = {
         { "Oland",                                           { {"TRA_DIM",16}, {"TRA_PAD",0}, {"TRA_SHUFFLE",1}, {"TRA_WPT",1} } },
         { "Pitcairn",                                        { {"TRA_DIM",4}, {"TRA_PAD",0}, {"TRA_SHUFFLE",1}, {"TRA_WPT",1} } },
         { "Tahiti",                                          { {"TRA_DIM",16}, {"TRA_PAD",0}, {"TRA_SHUFFLE",1}, {"TRA_WPT",1} } },
-        { "default",                                         { {"TRA_DIM",4}, {"TRA_PAD",0}, {"TRA_SHUFFLE",1}, {"TRA_WPT",1} } },
+        { "default",                                         { {"TRA_DIM",8}, {"TRA_PAD",1}, {"TRA_SHUFFLE",1}, {"TRA_WPT",1} } },
       }
     },
     { // ARM GPUs
@@ -246,7 +246,7 @@ const Database::DatabaseEntry Database::TransposeComplexDouble = {
         { "Intel(R) Core(TM) i5-6200U CPU @ 2.30GHz",        { {"TRA_DIM",4}, {"TRA_PAD",0}, {"TRA_SHUFFLE",0}, {"TRA_WPT",4} } },
         { "Intel(R) Core(TM) i7-3770 CPU @ 3.40GHz",         { {"TRA_DIM",4}, {"TRA_PAD",1}, {"TRA_SHUFFLE",0}, {"TRA_WPT",4} } },
         { "Intel(R) Core(TM) i7-5930K CPU @ 3.50GHz",        { {"TRA_DIM",16}, {"TRA_PAD",1}, {"TRA_SHUFFLE",0}, {"TRA_WPT",2} } },
-        { "default",                                         { {"TRA_DIM",4}, {"TRA_PAD",0}, {"TRA_SHUFFLE",0}, {"TRA_WPT",2} } },
+        { "default",                                         { {"TRA_DIM",4}, {"TRA_PAD",0}, {"TRA_SHUFFLE",0}, {"TRA_WPT",4} } },
       }
     },
     { // NVIDIA GPUs
@@ -263,7 +263,7 @@ const Database::DatabaseEntry Database::TransposeComplexDouble = {
         { "GeForce GTX TITAN X",                             { {"TRA_DIM",32}, {"TRA_PAD",1}, {"TRA_SHUFFLE",0}, {"TRA_WPT",1} } },
         { "Tesla K20m",                                      { {"TRA_DIM",16}, {"TRA_PAD",1}, {"TRA_SHUFFLE",0}, {"TRA_WPT",1} } },
         { "Tesla K40m",                                      { {"TRA_DIM",16}, {"TRA_PAD",1}, {"TRA_SHUFFLE",0}, {"TRA_WPT",1} } },
-        { "default",                                         { {"TRA_DIM",8}, {"TRA_PAD",0}, {"TRA_SHUFFLE",0}, {"TRA_WPT",1} } },
+        { "default",                                         { {"TRA_DIM",16}, {"TRA_PAD",1}, {"TRA_SHUFFLE",0}, {"TRA_WPT",1} } },
       }
     },
     { // Default
diff --git a/src/database/kernels/xaxpy.hpp b/src/database/kernels/xaxpy.hpp
index 905ee084..2f1dd638 100644
--- a/src/database/kernels/xaxpy.hpp
+++ b/src/database/kernels/xaxpy.hpp
@@ -41,7 +41,7 @@ const Database::DatabaseEntry Database::XaxpySingle = {
         { "Oland",                                           { {"VW",1}, {"WGS",128}, {"WPT",1} } },
         { "Pitcairn",                                        { {"VW",2}, {"WGS",128}, {"WPT",1} } },
         { "Tahiti",                                          { {"VW",2}, {"WGS",64}, {"WPT",1} } },
-        { "default",                                         { {"VW",1}, {"WGS",64}, {"WPT",1} } },
+        { "default",                                         { {"VW",2}, {"WGS",256}, {"WPT",1} } },
       }
     },
     { // ARM GPUs
@@ -55,7 +55,7 @@ const Database::DatabaseEntry Database::XaxpySingle = {
         { "Intel(R) Core(TM) i5-6200U CPU @ 2.30GHz",        { {"VW",1}, {"WGS",512}, {"WPT",1} } },
         { "Intel(R) Core(TM) i7-3770 CPU @ 3.40GHz",         { {"VW",4}, {"WGS",256}, {"WPT",1} } },
         { "Intel(R) Core(TM) i7-5930K CPU @ 3.50GHz",        { {"VW",1}, {"WGS",128}, {"WPT",1} } },
-        { "default",                                         { {"VW",1}, {"WGS",128}, {"WPT",1} } },
+        { "default",                                         { {"VW",2}, {"WGS",256}, {"WPT",1} } },
       }
     },
     { // Intel GPUs
@@ -88,7 +88,7 @@ const Database::DatabaseEntry Database::XaxpySingle = {
         { "GeForce GTX TITAN X",                             { {"VW",1}, {"WGS",64}, {"WPT",1} } },
         { "Tesla K20m",                                      { {"VW",4}, {"WGS",128}, {"WPT",1} } },
         { "Tesla K40m",                                      { {"VW",4}, {"WGS",128}, {"WPT",1} } },
-        { "default",                                         { {"VW",1}, {"WGS",64}, {"WPT",1} } },
+        { "default",                                         { {"VW",4}, {"WGS",64}, {"WPT",1} } },
       }
     },
     { // Default
@@ -110,7 +110,7 @@ const Database::DatabaseEntry Database::XaxpyComplexSingle = {
         { "Oland",                                           { {"VW",1}, {"WGS",128}, {"WPT",1} } },
         { "Pitcairn",                                        { {"VW",1}, {"WGS",64}, {"WPT",1} } },
         { "Tahiti",                                          { {"VW",1}, {"WGS",64}, {"WPT",1} } },
-        { "default",                                         { {"VW",1}, {"WGS",64}, {"WPT",1} } },
+        { "default",                                         { {"VW",1}, {"WGS",128}, {"WPT",1} } },
       }
     },
     { // ARM GPUs
@@ -124,7 +124,7 @@ const Database::DatabaseEntry Database::XaxpyComplexSingle = {
         { "Intel(R) Core(TM) i5-6200U CPU @ 2.30GHz",        { {"VW",4}, {"WGS",256}, {"WPT",1} } },
         { "Intel(R) Core(TM) i7-3770 CPU @ 3.40GHz",         { {"VW",1}, {"WGS",1024}, {"WPT",2} } },
         { "Intel(R) Core(TM) i7-5930K CPU @ 3.50GHz",        { {"VW",2}, {"WGS",1024}, {"WPT",1} } },
-        { "default",                                         { {"VW",1}, {"WGS",256}, {"WPT",1} } },
+        { "default",                                         { {"VW",8}, {"WGS",1024}, {"WPT",1} } },
       }
     },
     { // Intel GPUs
@@ -134,7 +134,7 @@ const Database::DatabaseEntry Database::XaxpyComplexSingle = {
         { "Intel(R) HD Graphics Skylake ULT GT2",            { {"VW",2}, {"WGS",512}, {"WPT",1} } },
         { "Iris",                                            { {"VW",2}, {"WGS",128}, {"WPT",1} } },
         { "Iris Pro",                                        { {"VW",1}, {"WGS",256}, {"WPT",8} } },
-        { "default",                                         { {"VW",1}, {"WGS",64}, {"WPT",1} } },
+        { "default",                                         { {"VW",1}, {"WGS",128}, {"WPT",8} } },
       }
     },
     { // Intel accelerators
@@ -157,7 +157,7 @@ const Database::DatabaseEntry Database::XaxpyComplexSingle = {
         { "GeForce GTX TITAN X",                             { {"VW",1}, {"WGS",512}, {"WPT",1} } },
         { "Tesla K20m",                                      { {"VW",1}, {"WGS",128}, {"WPT",1} } },
         { "Tesla K40m",                                      { {"VW",1}, {"WGS",128}, {"WPT",1} } },
-        { "default",                                         { {"VW",1}, {"WGS",64}, {"WPT",1} } },
+        { "default",                                         { {"VW",1}, {"WGS",256}, {"WPT",1} } },
       }
     },
     { // Default
@@ -193,7 +193,7 @@ const Database::DatabaseEntry Database::XaxpyDouble = {
         { "Intel(R) Core(TM) i5-6200U CPU @ 2.30GHz",        { {"VW",1}, {"WGS",1024}, {"WPT",1} } },
         { "Intel(R) Core(TM) i7-3770 CPU @ 3.40GHz",         { {"VW",8}, {"WGS",64}, {"WPT",1} } },
         { "Intel(R) Core(TM) i7-5930K CPU @ 3.50GHz",        { {"VW",8}, {"WGS",2048}, {"WPT",1} } },
-        { "default",                                         { {"VW",1}, {"WGS",64}, {"WPT",1} } },
+        { "default",                                         { {"VW",8}, {"WGS",512}, {"WPT",1} } },
       }
     },
     { // Intel accelerators
@@ -216,7 +216,7 @@ const Database::DatabaseEntry Database::XaxpyDouble = {
         { "GeForce GTX TITAN X",                             { {"VW",1}, {"WGS",512}, {"WPT",1} } },
         { "Tesla K20m",                                      { {"VW",2}, {"WGS",128}, {"WPT",1} } },
         { "Tesla K40m",                                      { {"VW",2}, {"WGS",128}, {"WPT",1} } },
-        { "default",                                         { {"VW",1}, {"WGS",64}, {"WPT",1} } },
+        { "default",                                         { {"VW",1}, {"WGS",128}, {"WPT",1} } },
       }
     },
     { // Default
@@ -238,7 +238,7 @@ const Database::DatabaseEntry Database::XaxpyComplexDouble = {
         { "Oland",                                           { {"VW",1}, {"WGS",256}, {"WPT",1} } },
         { "Pitcairn",                                        { {"VW",1}, {"WGS",128}, {"WPT",1} } },
         { "Tahiti",                                          { {"VW",1}, {"WGS",128}, {"WPT",1} } },
-        { "default",                                         { {"VW",1}, {"WGS",64}, {"WPT",1} } },
+        { "default",                                         { {"VW",1}, {"WGS",128}, {"WPT",1} } },
       }
     },
     { // ARM GPUs
@@ -252,7 +252,7 @@ const Database::DatabaseEntry Database::XaxpyComplexDouble = {
         { "Intel(R) Core(TM) i5-6200U CPU @ 2.30GHz",        { {"VW",8}, {"WGS",128}, {"WPT",1} } },
         { "Intel(R) Core(TM) i7-3770 CPU @ 3.40GHz",         { {"VW",8}, {"WGS",512}, {"WPT",1} } },
         { "Intel(R) Core(TM) i7-5930K CPU @ 3.50GHz",        { {"VW",1}, {"WGS",256}, {"WPT",1} } },
-        { "default",                                         { {"VW",1}, {"WGS",128}, {"WPT",1} } },
+        { "default",                                         { {"VW",4}, {"WGS",1024}, {"WPT",1} } },
       }
     },
     { // Intel accelerators
diff --git a/src/database/kernels/xdot.hpp b/src/database/kernels/xdot.hpp
index e36dd8ca..394c25de 100644
--- a/src/database/kernels/xdot.hpp
+++ b/src/database/kernels/xdot.hpp
@@ -41,7 +41,7 @@ const Database::DatabaseEntry Database::XdotSingle = {
         { "Oland",                                           { {"WGS1",256}, {"WGS2",32} } },
         { "Pitcairn",                                        { {"WGS1",128}, {"WGS2",32} } },
         { "Tahiti",                                          { {"WGS1",128}, {"WGS2",32} } },
-        { "default",                                         { {"WGS1",128}, {"WGS2",32} } },
+        { "default",                                         { {"WGS1",256}, {"WGS2",32} } },
       }
     },
     { // Intel CPUs
@@ -56,7 +56,7 @@ const Database::DatabaseEntry Database::XdotSingle = {
         { "Intel(R) HD Graphics Haswell Ultrabook GT2 Mobile", { {"WGS1",32}, {"WGS2",32} } },
         { "Intel(R) HD Graphics Skylake ULT GT2",            { {"WGS1",64}, {"WGS2",32} } },
         { "Iris Pro",                                        { {"WGS1",512}, {"WGS2",64} } },
-        { "default",                                         { {"WGS1",32}, {"WGS2",32} } },
+        { "default",                                         { {"WGS1",64}, {"WGS2",32} } },
       }
     },
     { // NVIDIA GPUs
@@ -70,7 +70,7 @@ const Database::DatabaseEntry Database::XdotSingle = {
         { "GeForce GTX 980",                                 { {"WGS1",256}, {"WGS2",32} } },
         { "GeForce GTX TITAN X",                             { {"WGS1",256}, {"WGS2",32} } },
         { "Tesla K20m",                                      { {"WGS1",1024}, {"WGS2",32} } },
-        { "default",                                         { {"WGS1",128}, {"WGS2",32} } },
+        { "default",                                         { {"WGS1",256}, {"WGS2",256} } },
       }
     },
     { // Default
@@ -92,7 +92,7 @@ const Database::DatabaseEntry Database::XdotComplexSingle = {
         { "Oland",                                           { {"WGS1",128}, {"WGS2",32} } },
         { "Pitcairn",                                        { {"WGS1",256}, {"WGS2",32} } },
         { "Tahiti",                                          { {"WGS1",64}, {"WGS2",32} } },
-        { "default",                                         { {"WGS1",64}, {"WGS2",32} } },
+        { "default",                                         { {"WGS1",256}, {"WGS2",32} } },
       }
     },
     { // Intel CPUs
@@ -121,7 +121,7 @@ const Database::DatabaseEntry Database::XdotComplexSingle = {
         { "GeForce GTX 980",                                 { {"WGS1",256}, {"WGS2",64} } },
         { "GeForce GTX TITAN X",                             { {"WGS1",256}, {"WGS2",32} } },
         { "Tesla K20m",                                      { {"WGS1",512}, {"WGS2",32} } },
-        { "default",                                         { {"WGS1",64}, {"WGS2",32} } },
+        { "default",                                         { {"WGS1",512}, {"WGS2",64} } },
       }
     },
     { // Default
@@ -143,7 +143,7 @@ const Database::DatabaseEntry Database::XdotDouble = {
         { "Oland",                                           { {"WGS1",256}, {"WGS2",32} } },
         { "Pitcairn",                                        { {"WGS1",128}, {"WGS2",32} } },
         { "Tahiti",                                          { {"WGS1",256}, {"WGS2",32} } },
-        { "default",                                         { {"WGS1",64}, {"WGS2",32} } },
+        { "default",                                         { {"WGS1",128}, {"WGS2",32} } },
       }
     },
     { // Intel CPUs
@@ -163,7 +163,7 @@ const Database::DatabaseEntry Database::XdotDouble = {
         { "GeForce GTX 980",                                 { {"WGS1",128}, {"WGS2",32} } },
         { "GeForce GTX TITAN X",                             { {"WGS1",256}, {"WGS2",32} } },
         { "Tesla K20m",                                      { {"WGS1",512}, {"WGS2",32} } },
-        { "default",                                         { {"WGS1",64}, {"WGS2",32} } },
+        { "default",                                         { {"WGS1",256}, {"WGS2",64} } },
       }
     },
     { // Default
@@ -185,7 +185,7 @@ const Database::DatabaseEntry Database::XdotComplexDouble = {
         { "Oland",                                           { {"WGS1",256}, {"WGS2",32} } },
         { "Pitcairn",                                        { {"WGS1",256}, {"WGS2",32} } },
         { "Tahiti",                                          { {"WGS1",256}, {"WGS2",32} } },
-        { "default",                                         { {"WGS1",64}, {"WGS2",32} } },
+        { "default",                                         { {"WGS1",256}, {"WGS2",32} } },
       }
     },
     { // Intel CPUs
@@ -205,7 +205,7 @@ const Database::DatabaseEntry Database::XdotComplexDouble = {
         { "GeForce GTX 980",                                 { {"WGS1",64}, {"WGS2",32} } },
         { "GeForce GTX TITAN X",                             { {"WGS1",128}, {"WGS2",32} } },
         { "Tesla K20m",                                      { {"WGS1",128}, {"WGS2",32} } },
-        { "default",                                         { {"WGS1",64}, {"WGS2",32} } },
+        { "default",                                         { {"WGS1",128}, {"WGS2",64} } },
       }
     },
     { // Default
diff --git a/src/database/kernels/xgemv.hpp b/src/database/kernels/xgemv.hpp
index 6d680b06..ba71893e 100644
--- a/src/database/kernels/xgemv.hpp
+++ b/src/database/kernels/xgemv.hpp
@@ -48,7 +48,7 @@ const Database::DatabaseEntry Database::XgemvSingle = {
       kDeviceTypeCPU, "Intel", {
         { "Intel(R) Core(TM) i5-6200U CPU @ 2.30GHz",        { {"WGS1",64}, {"WPT1",1} } },
         { "Intel(R) Core(TM) i7-3770 CPU @ 3.40GHz",         { {"WGS1",64}, {"WPT1",4} } },
-        { "default",                                         { {"WGS1",64}, {"WPT1",1} } },
+        { "default",                                         { {"WGS1",64}, {"WPT1",4} } },
       }
     },
     { // Intel GPUs
@@ -81,7 +81,7 @@ const Database::DatabaseEntry Database::XgemvSingle = {
         { "GeForce GTX TITAN X",                             { {"WGS1",256}, {"WPT1",1} } },
         { "Tesla K20m",                                      { {"WGS1",128}, {"WPT1",1} } },
         { "Tesla K40m",                                      { {"WGS1",256}, {"WPT1",1} } },
-        { "default",                                         { {"WGS1",64}, {"WPT1",1} } },
+        { "default",                                         { {"WGS1",256}, {"WPT1",1} } },
       }
     },
     { // Default
@@ -161,14 +161,14 @@ const Database::DatabaseEntry Database::XgemvDouble = {
         { "Oland",                                           { {"WGS1",256}, {"WPT1",1} } },
         { "Pitcairn",                                        { {"WGS1",256}, {"WPT1",1} } },
         { "Tahiti",                                          { {"WGS1",256}, {"WPT1",1} } },
-        { "default",                                         { {"WGS1",64}, {"WPT1",1} } },
+        { "default",                                         { {"WGS1",256}, {"WPT1",1} } },
       }
     },
     { // Intel CPUs
       kDeviceTypeCPU, "Intel", {
         { "Intel(R) Core(TM) i5-6200U CPU @ 2.30GHz",        { {"WGS1",64}, {"WPT1",2} } },
         { "Intel(R) Core(TM) i7-3770 CPU @ 3.40GHz",         { {"WGS1",64}, {"WPT1",4} } },
-        { "default",                                         { {"WGS1",64}, {"WPT1",2} } },
+        { "default",                                         { {"WGS1",64}, {"WPT1",4} } },
       }
     },
     { // Intel accelerators
@@ -191,7 +191,7 @@ const Database::DatabaseEntry Database::XgemvDouble = {
         { "GeForce GTX TITAN X",                             { {"WGS1",64}, {"WPT1",1} } },
         { "Tesla K20m",                                      { {"WGS1",256}, {"WPT1",1} } },
         { "Tesla K40m",                                      { {"WGS1",256}, {"WPT1",1} } },
-        { "default",                                         { {"WGS1",64}, {"WPT1",1} } },
+        { "default",                                         { {"WGS1",128}, {"WPT1",1} } },
       }
     },
     { // Default
@@ -220,7 +220,7 @@ const Database::DatabaseEntry Database::XgemvComplexDouble = {
       kDeviceTypeCPU, "Intel", {
         { "Intel(R) Core(TM) i5-6200U CPU @ 2.30GHz",        { {"WGS1",64}, {"WPT1",1} } },
         { "Intel(R) Core(TM) i7-3770 CPU @ 3.40GHz",         { {"WGS1",64}, {"WPT1",4} } },
-        { "default",                                         { {"WGS1",64}, {"WPT1",1} } },
+        { "default",                                         { {"WGS1",64}, {"WPT1",4} } },
       }
     },
     { // Intel accelerators
@@ -234,7 +234,7 @@ const Database::DatabaseEntry Database::XgemvComplexDouble = {
         { "GRID K520",                                       { {"WGS1",128}, {"WPT1",1} } },
         { "GeForce GTX 480",                                 { {"WGS1",64}, {"WPT1",1} } },
         { "GeForce GTX 670",                                 { {"WGS1",128}, {"WPT1",1} } },
-        { "default",                                         { {"WGS1",64}, {"WPT1",1} } },
+        { "default",                                         { {"WGS1",128}, {"WPT1",1} } },
       }
     },
     { // Default
diff --git a/src/database/kernels/xgemv_fast.hpp b/src/database/kernels/xgemv_fast.hpp
index 65b15030..7e948540 100644
--- a/src/database/kernels/xgemv_fast.hpp
+++ b/src/database/kernels/xgemv_fast.hpp
@@ -48,7 +48,7 @@ const Database::DatabaseEntry Database::XgemvFastSingle = {
       kDeviceTypeCPU, "Intel", {
         { "Intel(R) Core(TM) i5-6200U CPU @ 2.30GHz",        { {"VW2",4}, {"WGS2",128}, {"WPT2",4} } },
         { "Intel(R) Core(TM) i7-3770 CPU @ 3.40GHz",         { {"VW2",1}, {"WGS2",64}, {"WPT2",4} } },
-        { "default",                                         { {"VW2",1}, {"WGS2",64}, {"WPT2",4} } },
+        { "default",                                         { {"VW2",4}, {"WGS2",64}, {"WPT2",4} } },
       }
     },
     { // Intel GPUs
@@ -58,7 +58,7 @@ const Database::DatabaseEntry Database::XgemvFastSingle = {
         { "Intel(R) HD Graphics Skylake ULT GT2",            { {"VW2",1}, {"WGS2",256}, {"WPT2",1} } },
         { "Iris",                                            { {"VW2",1}, {"WGS2",128}, {"WPT2",2} } },
         { "Iris Pro",                                        { {"VW2",1}, {"WGS2",128}, {"WPT2",2} } },
-        { "default",                                         { {"VW2",1}, {"WGS2",128}, {"WPT2",1} } },
+        { "default",                                         { {"VW2",2}, {"WGS2",64}, {"WPT2",2} } },
       }
     },
     { // Intel accelerators
@@ -81,7 +81,7 @@ const Database::DatabaseEntry Database::XgemvFastSingle = {
         { "GeForce GTX TITAN X",                             { {"VW2",1}, {"WGS2",64}, {"WPT2",1} } },
         { "Tesla K20m",                                      { {"VW2",1}, {"WGS2",256}, {"WPT2",1} } },
         { "Tesla K40m",                                      { {"VW2",1}, {"WGS2",256}, {"WPT2",1} } },
-        { "default",                                         { {"VW2",1}, {"WGS2",64}, {"WPT2",1} } },
+        { "default",                                         { {"VW2",1}, {"WGS2",256}, {"WPT2",1} } },
       }
     },
     { // Default
@@ -120,7 +120,7 @@ const Database::DatabaseEntry Database::XgemvFastComplexSingle = {
         { "Intel(R) HD Graphics Skylake ULT GT2",            { {"VW2",1}, {"WGS2",64}, {"WPT2",1} } },
         { "Iris",                                            { {"VW2",1}, {"WGS2",64}, {"WPT2",1} } },
         { "Iris Pro",                                        { {"VW2",4}, {"WGS2",128}, {"WPT2",4} } },
-        { "default",                                         { {"VW2",1}, {"WGS2",64}, {"WPT2",1} } },
+        { "default",                                         { {"VW2",2}, {"WGS2",64}, {"WPT2",2} } },
       }
     },
     { // Intel accelerators
@@ -189,7 +189,7 @@ const Database::DatabaseEntry Database::XgemvFastDouble = {
         { "GeForce GTX TITAN X",                             { {"VW2",1}, {"WGS2",128}, {"WPT2",1} } },
         { "Tesla K20m",                                      { {"VW2",1}, {"WGS2",128}, {"WPT2",1} } },
         { "Tesla K40m",                                      { {"VW2",1}, {"WGS2",256}, {"WPT2",1} } },
-        { "default",                                         { {"VW2",1}, {"WGS2",64}, {"WPT2",1} } },
+        { "default",                                         { {"VW2",1}, {"WGS2",256}, {"WPT2",1} } },
       }
     },
     { // Default
diff --git a/src/database/kernels/xgemv_fast_rot.hpp b/src/database/kernels/xgemv_fast_rot.hpp
index 9822fb20..a57dcc66 100644
--- a/src/database/kernels/xgemv_fast_rot.hpp
+++ b/src/database/kernels/xgemv_fast_rot.hpp
@@ -32,7 +32,7 @@ const Database::DatabaseEntry Database::XgemvFastRotSingle = {
       kDeviceTypeGPU, "Intel", {
         { "Intel(R) HD Graphics Skylake ULT GT2",            { {"VW3",4}, {"WGS3",128}, {"WPT3",16} } },
         { "Iris Pro",                                        { {"VW3",4}, {"WGS3",32}, {"WPT3",16} } },
-        { "default",                                         { {"VW3",4}, {"WGS3",32}, {"WPT3",16} } },
+        { "default",                                         { {"VW3",4}, {"WGS3",128}, {"WPT3",16} } },
       }
     },
     { // NVIDIA GPUs
@@ -69,7 +69,7 @@ const Database::DatabaseEntry Database::XgemvFastRotComplexSingle = {
       kDeviceTypeGPU, "Intel", {
         { "Intel(R) HD Graphics Skylake ULT GT2",            { {"VW3",2}, {"WGS3",32}, {"WPT3",16} } },
         { "Iris Pro",                                        { {"VW3",4}, {"WGS3",16}, {"WPT3",16} } },
-        { "default",                                         { {"VW3",2}, {"WGS3",16}, {"WPT3",16} } },
+        { "default",                                         { {"VW3",2}, {"WGS3",32}, {"WPT3",8} } },
       }
     },
     { // Default
diff --git a/src/database/kernels/xger.hpp b/src/database/kernels/xger.hpp
index 216925fc..06f65c46 100644
--- a/src/database/kernels/xger.hpp
+++ b/src/database/kernels/xger.hpp
@@ -41,7 +41,7 @@ const Database::DatabaseEntry Database::XgerSingle = {
         { "Oland",                                           { {"WGS1",32}, {"WGS2",4}, {"WPT",2} } },
         { "Pitcairn",                                        { {"WGS1",64}, {"WGS2",1}, {"WPT",1} } },
         { "Tahiti",                                          { {"WGS1",256}, {"WGS2",1}, {"WPT",1} } },
-        { "default",                                         { {"WGS1",32}, {"WGS2",1}, {"WPT",1} } },
+        { "default",                                         { {"WGS1",32}, {"WGS2",4}, {"WPT",1} } },
       }
     },
     { // ARM GPUs
@@ -54,7 +54,7 @@ const Database::DatabaseEntry Database::XgerSingle = {
       kDeviceTypeCPU, "Intel", {
         { "Intel(R) Core(TM) i5-6200U CPU @ 2.30GHz",        { {"WGS1",128}, {"WGS2",2}, {"WPT",4} } },
         { "Intel(R) Core(TM) i7-5930K CPU @ 3.50GHz",        { {"WGS1",128}, {"WGS2",1}, {"WPT",4} } },
-        { "default",                                         { {"WGS1",128}, {"WGS2",1}, {"WPT",4} } },
+        { "default",                                         { {"WGS1",512}, {"WGS2",1}, {"WPT",4} } },
       }
     },
     { // Intel GPUs
@@ -63,7 +63,7 @@ const Database::DatabaseEntry Database::XgerSingle = {
         { "Intel(R) HD Graphics Haswell Ultrabook GT2 Mobile", { {"WGS1",256}, {"WGS2",2}, {"WPT",2} } },
         { "Intel(R) HD Graphics Skylake ULT GT2",            { {"WGS1",8}, {"WGS2",8}, {"WPT",4} } },
         { "Iris Pro",                                        { {"WGS1",64}, {"WGS2",1}, {"WPT",4} } },
-        { "default",                                         { {"WGS1",8}, {"WGS2",1}, {"WPT",2} } },
+        { "default",                                         { {"WGS1",16}, {"WGS2",8}, {"WPT",4} } },
       }
     },
     { // NVIDIA GPUs
@@ -75,7 +75,7 @@ const Database::DatabaseEntry Database::XgerSingle = {
         { "GeForce GTX 680",                                 { {"WGS1",128}, {"WGS2",1}, {"WPT",4} } },
         { "GeForce GTX 750",                                 { {"WGS1",64}, {"WGS2",16}, {"WPT",4} } },
         { "GeForce GTX TITAN",                               { {"WGS1",32}, {"WGS2",4}, {"WPT",2} } },
-        { "default",                                         { {"WGS1",32}, {"WGS2",1}, {"WPT",1} } },
+        { "default",                                         { {"WGS1",256}, {"WGS2",1}, {"WPT",4} } },
       }
     },
     { // Default
@@ -97,7 +97,7 @@ const Database::DatabaseEntry Database::XgerComplexSingle = {
         { "Oland",                                           { {"WGS1",4}, {"WGS2",8}, {"WPT",1} } },
         { "Pitcairn",                                        { {"WGS1",128}, {"WGS2",2}, {"WPT",1} } },
         { "Tahiti",                                          { {"WGS1",64}, {"WGS2",2}, {"WPT",1} } },
-        { "default",                                         { {"WGS1",4}, {"WGS2",1}, {"WPT",1} } },
+        { "default",                                         { {"WGS1",256}, {"WGS2",1}, {"WPT",1} } },
       }
     },
     { // ARM GPUs
@@ -110,7 +110,7 @@ const Database::DatabaseEntry Database::XgerComplexSingle = {
       kDeviceTypeCPU, "Intel", {
         { "Intel(R) Core(TM) i5-6200U CPU @ 2.30GHz",        { {"WGS1",256}, {"WGS2",1}, {"WPT",4} } },
         { "Intel(R) Core(TM) i7-5930K CPU @ 3.50GHz",        { {"WGS1",512}, {"WGS2",4}, {"WPT",2} } },
-        { "default",                                         { {"WGS1",256}, {"WGS2",1}, {"WPT",2} } },
+        { "default",                                         { {"WGS1",512}, {"WGS2",1}, {"WPT",4} } },
       }
     },
     { // Intel GPUs
@@ -119,7 +119,7 @@ const Database::DatabaseEntry Database::XgerComplexSingle = {
         { "Intel(R) HD Graphics Haswell Ultrabook GT2 Mobile", { {"WGS1",128}, {"WGS2",4}, {"WPT",1} } },
         { "Intel(R) HD Graphics Skylake ULT GT2",            { {"WGS1",128}, {"WGS2",4}, {"WPT",2} } },
         { "Iris Pro",                                        { {"WGS1",16}, {"WGS2",2}, {"WPT",4} } },
-        { "default",                                         { {"WGS1",16}, {"WGS2",1}, {"WPT",1} } },
+        { "default",                                         { {"WGS1",32}, {"WGS2",1}, {"WPT",2} } },
       }
     },
     { // NVIDIA GPUs
@@ -131,7 +131,7 @@ const Database::DatabaseEntry Database::XgerComplexSingle = {
         { "GeForce GTX 680",                                 { {"WGS1",32}, {"WGS2",4}, {"WPT",2} } },
         { "GeForce GTX 750",                                 { {"WGS1",32}, {"WGS2",16}, {"WPT",4} } },
         { "GeForce GTX TITAN",                               { {"WGS1",16}, {"WGS2",16}, {"WPT",2} } },
-        { "default",                                         { {"WGS1",16}, {"WGS2",2}, {"WPT",2} } },
+        { "default",                                         { {"WGS1",64}, {"WGS2",2}, {"WPT",2} } },
       }
     },
     { // Default
@@ -153,7 +153,7 @@ const Database::DatabaseEntry Database::XgerDouble = {
         { "Oland",                                           { {"WGS1",128}, {"WGS2",1}, {"WPT",2} } },
         { "Pitcairn",                                        { {"WGS1",64}, {"WGS2",1}, {"WPT",1} } },
         { "Tahiti",                                          { {"WGS1",64}, {"WGS2",2}, {"WPT",1} } },
-        { "default",                                         { {"WGS1",32}, {"WGS2",1}, {"WPT",1} } },
+        { "default",                                         { {"WGS1",64}, {"WGS2",2}, {"WPT",1} } },
       }
     },
     { // ARM GPUs
@@ -166,7 +166,7 @@ const Database::DatabaseEntry Database::XgerDouble = {
       kDeviceTypeCPU, "Intel", {
         { "Intel(R) Core(TM) i5-6200U CPU @ 2.30GHz",        { {"WGS1",512}, {"WGS2",16}, {"WPT",1} } },
         { "Intel(R) Core(TM) i7-5930K CPU @ 3.50GHz",        { {"WGS1",512}, {"WGS2",8}, {"WPT",2} } },
-        { "default",                                         { {"WGS1",512}, {"WGS2",8}, {"WPT",1} } },
+        { "default",                                         { {"WGS1",512}, {"WGS2",1}, {"WPT",4} } },
       }
     },
     { // NVIDIA GPUs
@@ -178,7 +178,7 @@ const Database::DatabaseEntry Database::XgerDouble = {
         { "GeForce GTX 680",                                 { {"WGS1",128}, {"WGS2",4}, {"WPT",2} } },
         { "GeForce GTX 750",                                 { {"WGS1",256}, {"WGS2",2}, {"WPT",2} } },
         { "GeForce GTX TITAN",                               { {"WGS1",16}, {"WGS2",8}, {"WPT",2} } },
-        { "default",                                         { {"WGS1",16}, {"WGS2",2}, {"WPT",1} } },
+        { "default",                                         { {"WGS1",256}, {"WGS2",2}, {"WPT",2} } },
       }
     },
     { // Default
@@ -200,7 +200,7 @@ const Database::DatabaseEntry Database::XgerComplexDouble = {
         { "Oland",                                           { {"WGS1",16}, {"WGS2",16}, {"WPT",2} } },
         { "Pitcairn",                                        { {"WGS1",64}, {"WGS2",4}, {"WPT",1} } },
         { "Tahiti",                                          { {"WGS1",32}, {"WGS2",4}, {"WPT",1} } },
-        { "default",                                         { {"WGS1",16}, {"WGS2",1}, {"WPT",1} } },
+        { "default",                                         { {"WGS1",32}, {"WGS2",4}, {"WPT",1} } },
       }
     },
     { // ARM GPUs
@@ -213,7 +213,7 @@ const Database::DatabaseEntry Database::XgerComplexDouble = {
       kDeviceTypeCPU, "Intel", {
         { "Intel(R) Core(TM) i5-6200U CPU @ 2.30GHz",        { {"WGS1",512}, {"WGS2",4}, {"WPT",2} } },
         { "Intel(R) Core(TM) i7-5930K CPU @ 3.50GHz",        { {"WGS1",256}, {"WGS2",1}, {"WPT",2} } },
-        { "default",                                         { {"WGS1",256}, {"WGS2",1}, {"WPT",2} } },
+        { "default",                                         { {"WGS1",512}, {"WGS2",1}, {"WPT",4} } },
       }
     },
     { // NVIDIA GPUs
@@ -225,7 +225,7 @@ const Database::DatabaseEntry Database::XgerComplexDouble = {
         { "GeForce GTX 680",                                 { {"WGS1",8}, {"WGS2",16}, {"WPT",1} } },
         { "GeForce GTX 750",                                 { {"WGS1",8}, {"WGS2",32}, {"WPT",4} } },
         { "GeForce GTX TITAN",                               { {"WGS1",32}, {"WGS2",4}, {"WPT",2} } },
-        { "default",                                         { {"WGS1",8}, {"WGS2",2}, {"WPT",1} } },
+        { "default",                                         { {"WGS1",16}, {"WGS2",8}, {"WPT",2} } },
       }
     },
     { // Default