summaryrefslogtreecommitdiff
path: root/src/routines/level2/xger.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'src/routines/level2/xger.cpp')
-rw-r--r--src/routines/level2/xger.cpp106
1 files changed, 106 insertions, 0 deletions
diff --git a/src/routines/level2/xger.cpp b/src/routines/level2/xger.cpp
new file mode 100644
index 00000000..353047d2
--- /dev/null
+++ b/src/routines/level2/xger.cpp
@@ -0,0 +1,106 @@
+
+// =================================================================================================
+// 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 Xger class (see the header for information about the class).
+//
+// =================================================================================================
+
+#include "routines/level2/xger.hpp"
+
+#include <string>
+#include <vector>
+
+namespace clblast {
+// =================================================================================================
+
+// Constructor: forwards to base class constructor
+template <typename T>
+Xger<T>::Xger(Queue &queue, EventPointer event, const std::string &name):
+ Routine(queue, event, name, {"Xger"}, PrecisionValue<T>()) {
+ source_string_ =
+ #include "../../kernels/level2/level2.opencl"
+ #include "../../kernels/level2/xger.opencl"
+ ;
+}
+
+// =================================================================================================
+
+// The main routine
+template <typename T>
+StatusCode Xger<T>::DoGer(const Layout layout,
+ const size_t m, const size_t n,
+ const T alpha,
+ const Buffer<T> &x_buffer, const size_t x_offset, const size_t x_inc,
+ const Buffer<T> &y_buffer, const size_t y_offset, const size_t y_inc,
+ const Buffer<T> &a_buffer, const size_t a_offset, const size_t a_ld) {
+
+ // Makes sure all dimensions are larger than zero
+ if (m == 0 || n == 0) { return StatusCode::kInvalidDimension; }
+
+ // Computes whether or not the matrix has an alternative layout (row or column-major).
+ const auto a_is_rowmajor = (layout == Layout::kRowMajor);
+ const auto a_one = (a_is_rowmajor) ? n : m;
+ const auto a_two = (a_is_rowmajor) ? m : n;
+
+ // Tests the matrix and the vectors for validity
+ auto status = TestMatrixA(a_one, a_two, a_buffer, a_offset, a_ld);
+ if (ErrorIn(status)) { return status; }
+ status = TestVectorX(m, x_buffer, x_offset, x_inc);
+ if (ErrorIn(status)) { return status; }
+ status = TestVectorY(n, y_buffer, y_offset, y_inc);
+ if (ErrorIn(status)) { return status; }
+
+ // Upload the scalar argument as a constant buffer to the device (needed for half-precision)
+ auto alpha_buffer = Buffer<T>(context_, 1);
+ alpha_buffer.Write(queue_, 1, &alpha);
+
+ // Retrieves the kernel from the compiled binary
+ try {
+ const auto program = GetProgramFromCache(context_, PrecisionValue<T>(), routine_name_);
+ auto kernel = Kernel(program, "Xger");
+
+ // Sets the kernel arguments
+ kernel.SetArgument(0, static_cast<int>(a_one));
+ kernel.SetArgument(1, static_cast<int>(a_two));
+ kernel.SetArgument(2, alpha_buffer());
+ kernel.SetArgument(3, x_buffer());
+ kernel.SetArgument(4, static_cast<int>(x_offset));
+ kernel.SetArgument(5, static_cast<int>(x_inc));
+ kernel.SetArgument(6, y_buffer());
+ kernel.SetArgument(7, static_cast<int>(y_offset));
+ kernel.SetArgument(8, static_cast<int>(y_inc));
+ kernel.SetArgument(9, a_buffer());
+ kernel.SetArgument(10, static_cast<int>(a_offset));
+ kernel.SetArgument(11, static_cast<int>(a_ld));
+ kernel.SetArgument(12, static_cast<int>(a_is_rowmajor));
+
+ // Launches the kernel
+ auto a_one_ceiled = Ceil(CeilDiv(a_one, db_["WPT"]), db_["WGS1"]);
+ auto a_two_ceiled = Ceil(CeilDiv(a_two, db_["WPT"]), db_["WGS2"]);
+ auto global = std::vector<size_t>{a_one_ceiled, a_two_ceiled};
+ auto local = std::vector<size_t>{db_["WGS1"], db_["WGS2"]};
+ status = RunKernel(kernel, queue_, device_, global, local, event_);
+ if (ErrorIn(status)) { return status; }
+
+ // Succesfully finished the computation
+ return StatusCode::kSuccess;
+ } catch (...) { return StatusCode::kInvalidKernel; }
+}
+
+// =================================================================================================
+
+// Compiles the templated class
+template class Xger<half>;
+template class Xger<float>;
+template class Xger<double>;
+template class Xger<float2>;
+template class Xger<double2>;
+
+// =================================================================================================
+} // namespace clblast