summaryrefslogtreecommitdiff
path: root/src/routines/level1/xamax.cc
diff options
context:
space:
mode:
Diffstat (limited to 'src/routines/level1/xamax.cc')
-rw-r--r--src/routines/level1/xamax.cc112
1 files changed, 112 insertions, 0 deletions
diff --git a/src/routines/level1/xamax.cc b/src/routines/level1/xamax.cc
new file mode 100644
index 00000000..ffdfa496
--- /dev/null
+++ b/src/routines/level1/xamax.cc
@@ -0,0 +1,112 @@
+
+// =================================================================================================
+// 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 implements the Xamax class (see the header for information about the class).
+//
+// =================================================================================================
+
+#include "internal/routines/level1/xamax.h"
+
+#include <string>
+#include <vector>
+
+namespace clblast {
+// =================================================================================================
+
+// Specific implementations to get the memory-type based on a template argument
+template <> const Precision Xamax<float>::precision_ = Precision::kSingle;
+template <> const Precision Xamax<double>::precision_ = Precision::kDouble;
+template <> const Precision Xamax<float2>::precision_ = Precision::kComplexSingle;
+template <> const Precision Xamax<double2>::precision_ = Precision::kComplexDouble;
+
+// =================================================================================================
+
+// Constructor: forwards to base class constructor
+template <typename T>
+Xamax<T>::Xamax(Queue &queue, EventPointer event, const std::string &name):
+ Routine<T>(queue, event, name, {"Xdot"}, precision_) {
+ source_string_ =
+ #include "../../kernels/level1/xamax.opencl"
+ ;
+}
+
+// =================================================================================================
+
+// The main routine
+template <typename T>
+StatusCode Xamax<T>::DoAmax(const size_t n,
+ const Buffer<T> &imax_buffer, const size_t imax_offset,
+ const Buffer<T> &x_buffer, const size_t x_offset, const size_t x_inc) {
+
+ // Makes sure all dimensions are larger than zero
+ if (n == 0) { return StatusCode::kInvalidDimension; }
+
+ // Tests the vectors for validity
+ auto status = TestVectorX(n, x_buffer, x_offset, x_inc, sizeof(T));
+ if (ErrorIn(status)) { return status; }
+ status = TestVectorDot(1, imax_buffer, imax_offset, sizeof(T));
+ if (ErrorIn(status)) { return status; }
+
+ // Retrieves the Xamax kernels from the compiled binary
+ try {
+ auto& program = GetProgramFromCache();
+ auto kernel1 = Kernel(program, "Xamax");
+ auto kernel2 = Kernel(program, "XamaxEpilogue");
+
+ // Creates the buffer for intermediate values
+ auto temp_size = 2*db_["WGS2"];
+ auto temp_buffer1 = Buffer<T>(context_, temp_size);
+ auto temp_buffer2 = Buffer<unsigned int>(context_, temp_size);
+
+ // Sets the kernel arguments
+ kernel1.SetArgument(0, static_cast<int>(n));
+ kernel1.SetArgument(1, x_buffer());
+ kernel1.SetArgument(2, static_cast<int>(x_offset));
+ kernel1.SetArgument(3, static_cast<int>(x_inc));
+ kernel1.SetArgument(4, temp_buffer1());
+ kernel1.SetArgument(5, temp_buffer2());
+
+ // Event waiting list
+ auto eventWaitList = std::vector<Event>();
+
+ // Launches the main kernel
+ auto global1 = std::vector<size_t>{db_["WGS1"]*temp_size};
+ auto local1 = std::vector<size_t>{db_["WGS1"]};
+ auto kernelEvent = Event();
+ status = RunKernel(kernel1, global1, local1, kernelEvent.pointer());
+ if (ErrorIn(status)) { return status; }
+ eventWaitList.push_back(kernelEvent);
+
+ // Sets the arguments for the epilogue kernel
+ kernel2.SetArgument(0, temp_buffer1());
+ kernel2.SetArgument(1, temp_buffer2());
+ kernel2.SetArgument(2, imax_buffer());
+ kernel2.SetArgument(3, static_cast<int>(imax_offset));
+
+ // Launches the epilogue kernel
+ auto global2 = std::vector<size_t>{db_["WGS2"]};
+ auto local2 = std::vector<size_t>{db_["WGS2"]};
+ status = RunKernel(kernel2, global2, local2, event_, eventWaitList);
+ if (ErrorIn(status)) { return status; }
+
+ // Succesfully finished the computation
+ return StatusCode::kSuccess;
+ } catch (...) { return StatusCode::kInvalidKernel; }
+}
+
+// =================================================================================================
+
+// Compiles the templated class
+template class Xamax<float>;
+template class Xamax<double>;
+template class Xamax<float2>;
+template class Xamax<double2>;
+
+// =================================================================================================
+} // namespace clblast