summaryrefslogtreecommitdiff
path: root/src/tuning/kernels/xdot.hpp
diff options
context:
space:
mode:
Diffstat (limited to 'src/tuning/kernels/xdot.hpp')
-rw-r--r--src/tuning/kernels/xdot.hpp102
1 files changed, 102 insertions, 0 deletions
diff --git a/src/tuning/kernels/xdot.hpp b/src/tuning/kernels/xdot.hpp
new file mode 100644
index 00000000..15673c79
--- /dev/null
+++ b/src/tuning/kernels/xdot.hpp
@@ -0,0 +1,102 @@
+
+// =================================================================================================
+// This file is part of the CLBlast project. The project is licensed under Apache Version 2.0. This
+// project loosely follows the Google C++ styleguide and uses a tab-size of two spaces and a max-
+// width of 100 characters per line.
+//
+// Author(s):
+// Cedric Nugteren <www.cedricnugteren.nl>
+//
+// This file uses the auto-tuner to tune the xdot OpenCL kernels. Note that the results are
+// not verified, since the result is not final and depends on the WGS2 parameter.
+//
+// =================================================================================================
+
+#include <string>
+#include <vector>
+
+#include "utilities/utilities.hpp"
+#include "tuning/tuning.hpp"
+
+namespace clblast {
+// =================================================================================================
+
+// Settings for this kernel (default command-line arguments)
+TunerDefaults XdotGetTunerDefaults(const int) {
+ auto settings = TunerDefaults();
+ settings.options = {kArgN};
+ settings.default_n = 2*1024*1024;
+ return settings;
+}
+
+// Settings for this kernel (general)
+template <typename T>
+TunerSettings XdotGetTunerSettings(const int V, const Arguments<T> &args) {
+ auto settings = TunerSettings();
+
+ // Identification of the kernel
+ settings.kernel_family = "xdot_"+std::to_string(V);
+ settings.kernel_name = (V==1) ? "Xdot" : "XdotEpilogue";
+ settings.sources =
+#include "../src/kernels/level1/xdot.opencl"
+ ;
+
+ // Buffer sizes
+ settings.size_x = args.n;
+ settings.size_y = args.n;
+ settings.size_temp = args.n; // Worst case
+
+ // Inputs and outputs IDs (X:0, Y:1, A:2, B:3, C:4, temp:5)
+ settings.inputs = {0, 1, 5};
+ settings.outputs = {}; // no output checking
+
+ // Sets the base thread configuration
+ settings.global_size = (V==1) ? std::vector<size_t>{2*64} : std::vector<size_t>{1};
+ settings.global_size_ref = (V==1) ? std::vector<size_t>{2*64*64} : std::vector<size_t>{64};
+ settings.local_size = {1};
+ settings.local_size_ref = {64};
+
+ // Transforms the thread configuration based on the parameters
+ settings.mul_local = (V==1) ? TransformVector{{"WGS1"}} : TransformVector{{"WGS2"}};
+ settings.mul_global = (V==1) ? TransformVector{{"WGS1"}} : TransformVector{{"WGS2"}};
+
+ // Sets the tuning parameters and their possible values
+ settings.parameters = {
+ {"WGS"+std::to_string(V), {32, 64, 128, 256, 512, 1024}},
+ };
+
+ // Describes how to compute the performance metrics
+ settings.metric_amount = (V==1) ? (2*args.n + 1) * GetBytes(args.precision) : 1 * GetBytes(args.precision);
+ settings.performance_unit = (V==1) ? "GB/s" : "N/A";
+
+ return settings;
+}
+
+// Tests for valid arguments
+template <typename T>
+void XdotTestValidArguments(const int, const Arguments<T> &) { }
+std::vector<Constraint> XdotSetConstraints(const int) { return {}; }
+
+// Sets the kernel's arguments
+template <typename T>
+void XdotSetArguments(const int V, Kernel &kernel, const Arguments<T> &args, std::vector<Buffer<T>>& buffers) {
+ if (V == 1) {
+ kernel.SetArgument(0, static_cast<int>(args.n));
+ kernel.SetArgument(1, buffers[0]()); // 0 == X vector
+ kernel.SetArgument(2, 0);
+ kernel.SetArgument(3, 1);
+ kernel.SetArgument(4, buffers[1]()); // 1 == Y vector
+ kernel.SetArgument(5, 0);
+ kernel.SetArgument(6, 1);
+ kernel.SetArgument(7, buffers[5]()); // 5 == temp; no output checking - size varies
+ kernel.SetArgument(8, static_cast<int>(false));
+ }
+ else {
+ kernel.SetArgument(0, buffers[5]()); // 5 == temp
+ kernel.SetArgument(1, buffers[0]()); // 0 == X vector; no output checking - size varies
+ kernel.SetArgument(2, 0);
+ }
+}
+
+// =================================================================================================
+} // namespace clblast