summaryrefslogtreecommitdiff
path: root/src/tuning/kernels/xdot.cc
diff options
context:
space:
mode:
Diffstat (limited to 'src/tuning/kernels/xdot.cc')
-rw-r--r--src/tuning/kernels/xdot.cc137
1 files changed, 137 insertions, 0 deletions
diff --git a/src/tuning/kernels/xdot.cc b/src/tuning/kernels/xdot.cc
new file mode 100644
index 00000000..1581e13f
--- /dev/null
+++ b/src/tuning/kernels/xdot.cc
@@ -0,0 +1,137 @@
+
+// =================================================================================================
+// 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 CLTune 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.hpp"
+#include "tuning/tuning.hpp"
+
+namespace clblast {
+// =================================================================================================
+
+// See comment at top of file for a description of the class
+template <typename T, int V>
+class TuneXdot {
+ public:
+
+ // The representative kernel and the source code
+ static std::string KernelFamily() { return "xdot_"+std::to_string(V); }
+ static std::string KernelName() { return (V==1) ? "Xdot" : "XdotEpilogue"; }
+ static std::string GetSources() {
+ return
+ #include "../src/kernels/common.opencl"
+ #include "../src/kernels/level1/xdot.opencl"
+ ;
+ }
+
+ // The list of arguments relevant for this routine
+ static std::vector<std::string> GetOptions() { return {kArgN}; }
+
+ // Tests for valid arguments
+ static void TestValidArguments(const Arguments<T> &) { }
+
+ // Sets the default values for the arguments
+ static size_t DefaultM() { return 1; } // N/A for this kernel
+ static size_t DefaultN() { return 2*1024*1024; }
+ static size_t DefaultK() { return 1; } // N/A for this kernel
+ static double DefaultFraction() { return 1.0; } // N/A for this kernel
+
+ // Describes how to obtain the sizes of the buffers
+ static size_t GetSizeX(const Arguments<T> &args) { return args.n; }
+ static size_t GetSizeY(const Arguments<T> &args) { return args.n; }
+ static size_t GetSizeA(const Arguments<T> &) { return 1; } // N/A for this kernel
+ static size_t GetSizeB(const Arguments<T> &) { return 1; } // N/A for this kernel
+ static size_t GetSizeC(const Arguments<T> &) { return 1; } // N/A for this kernel
+ static size_t GetSizeTemp(const Arguments<T> &args) { return args.n; } // Worst case
+
+ // Sets the tuning parameters and their possible values
+ static void SetParameters(cltune::Tuner &tuner, const size_t id) {
+ tuner.AddParameter(id, "WGS"+std::to_string(V), {32, 64, 128, 256, 512, 1024});
+ }
+
+ // Sets the constraints and local memory size
+ static void SetConstraints(cltune::Tuner &, const size_t) { }
+ static void SetLocalMemorySize(cltune::Tuner &, const size_t, const Arguments<T> &) { }
+
+ // Sets the base thread configuration
+ static std::vector<size_t> GlobalSize(const Arguments<T> &) { return (V==1) ? std::vector<size_t>{2*64} : std::vector<size_t>{1}; }
+ static std::vector<size_t> GlobalSizeRef(const Arguments<T> &) { return (V==1) ? std::vector<size_t>{2*64*64} : std::vector<size_t>{64}; }
+ static std::vector<size_t> LocalSize() { return {1}; }
+ static std::vector<size_t> LocalSizeRef() { return {64}; }
+
+ // Transforms the thread configuration based on the parameters
+ using TransformVector = std::vector<std::vector<std::string>>;
+ static TransformVector MulLocal() { return (V==1) ? TransformVector{{"WGS1"}} : TransformVector{{"WGS2"}}; }
+ static TransformVector DivLocal() { return {}; }
+ static TransformVector MulGlobal() { return (V==1) ? TransformVector{{"WGS1"}} : TransformVector{{"WGS2"}}; }
+ static TransformVector DivGlobal() { return {}; }
+
+ // Sets the kernel's arguments
+ static void SetArguments(cltune::Tuner &tuner, const Arguments<T> &args,
+ std::vector<T> &x_vec, std::vector<T> &y_vec,
+ std::vector<T> &, std::vector<T> &, std::vector<T> &,
+ std::vector<T> &temp) {
+ if (V == 1) {
+ tuner.AddArgumentScalar(static_cast<int>(args.n));
+ tuner.AddArgumentInput(x_vec);
+ tuner.AddArgumentScalar(0);
+ tuner.AddArgumentScalar(1);
+ tuner.AddArgumentInput(y_vec);
+ tuner.AddArgumentScalar(0);
+ tuner.AddArgumentScalar(1);
+ tuner.AddArgumentInput(temp); // No output checking for the result - size varies
+ tuner.AddArgumentScalar(static_cast<int>(false));
+ }
+ else {
+ tuner.AddArgumentInput(temp);
+ tuner.AddArgumentInput(x_vec); // No output checking for the result - store somewhere
+ tuner.AddArgumentScalar(0);
+ }
+ }
+
+ // Describes how to compute the performance metrics
+ static size_t GetMetric(const Arguments<T> &args) {
+ return (V==1) ? (2*args.n + 1) * GetBytes(args.precision) : 1 * GetBytes(args.precision);
+ }
+ static std::string PerformanceUnit() { return (V==1) ? "GB/s" : "N/A"; }
+};
+
+// =================================================================================================
+} // namespace clblast
+
+// Shortcuts to the clblast namespace
+using float2 = clblast::float2;
+using double2 = clblast::double2;
+
+// Function to tune a specific variation V (not within the clblast namespace)
+template <int V>
+void StartVariation(int argc, char *argv[]) {
+ switch(clblast::GetPrecision(argc, argv)) {
+ case clblast::Precision::kHalf: clblast::Tuner<clblast::TuneXdot<half, V>, half>(argc, argv); break;
+ case clblast::Precision::kSingle: clblast::Tuner<clblast::TuneXdot<float, V>, float>(argc, argv); break;
+ case clblast::Precision::kDouble: clblast::Tuner<clblast::TuneXdot<double, V>, double>(argc, argv); break;
+ case clblast::Precision::kComplexSingle: clblast::Tuner<clblast::TuneXdot<float2, V>, float2>(argc, argv); break;
+ case clblast::Precision::kComplexDouble: clblast::Tuner<clblast::TuneXdot<double2, V>, double2>(argc, argv); break;
+ }
+}
+
+// Main function (not within the clblast namespace)
+int main(int argc, char *argv[]) {
+ StartVariation<1>(argc, argv);
+ StartVariation<2>(argc, argv);
+ return 0;
+}
+
+// =================================================================================================