Add starts of OpenCL implementation

src/OCLStream.cpp

@@ -0,0 +1,77 @@
+
+#include "OCLStream.h"
+
+template <class T>
+OCLStream<T>::OCLStream(const unsigned int ARRAY_SIZE)
+{
+  array_size = ARRAY_SIZE;
+
+  // Setup default OpenCL GPU
+  context = cl::Context::getDefault();
+  //queue = cl::CommandQueue::getDefault();
+
+  // Create program
+
+  std::string kernels{R"CLC(
+
+    const double scalar = 3.0;
+
+    kernel void copy(
+      global const double * restrict a,
+      global double * restrict c)
+    {
+      const size_t i = get_global_id(0);
+      c[i] = a[i];
+    }
+  )CLC"};
+ 
+std::cout << kernels << std::endl;
+ 
+  //cl::Program program(kernels);
+  //program.build();
+
+exit(-1);
+
+
+}
+
+template <class T>
+void OCLStream<T>::copy()
+{
+  return;
+}
+
+template <class T>
+void OCLStream<T>::mul()
+{
+  return;
+}
+
+template <class T>
+void OCLStream<T>::add()
+{
+  return;
+}
+
+template <class T>
+void OCLStream<T>::triad()
+{
+  return;
+}
+
+template <class T>
+void OCLStream<T>::write_arrays(const std::vector<T>& a, const std::vector<T>& b, const std::vector<T>& c)
+{
+  return;
+}
+
+template <class T>
+void OCLStream<T>::read_arrays(std::vector<T>& a, std::vector<T>& b, std::vector<T>& c)
+{
+  return;
+}
+
+
+template class OCLStream<float>;
+template class OCLStream<double>;
+

src/OCLStream.h

@@ -0,0 +1,43 @@
+
+#include <iostream>
+#include <stdexcept>
+
+#define CL_HPP_ENABLE_EXCEPTIONS
+#define CL_HPP_TARGET_OPENCL_VERSION 120
+#define CL_HPP_MINIMUM_OPENCL_VERSION 120
+
+#include "cl2.hpp"
+
+#include "Stream.h"
+
+template <class T>
+class OCLStream : public Stream<T>
+{
+  protected:
+    // Size of arrays
+    unsigned int array_size;
+
+    // Device side pointers to arrays
+    cl::Buffer d_a;
+    cl::Buffer d_b;
+    cl::Buffer d_c;
+
+    // OpenCL objects
+    cl::Context context;
+    cl::CommandQueue queue;
+
+  public:
+
+    OCLStream(const unsigned int);
+    ~OCLStream();
+
+    virtual void copy() override;
+    virtual void add() override;
+    virtual void mul() override;
+    virtual void triad() override;
+
+    virtual void write_arrays(const std::vector<T>& a, const std::vector<T>& b, const std::vector<T>& c) override;
+    virtual void read_arrays(std::vector<T>& a, std::vector<T>& b, std::vector<T>& c) override;
+
+};
+

src/main.cpp

@@ -10,7 +10,8 @@
 
 #include "common.h"
 #include "Stream.h"
-#include "CUDAStream.h"
+
+#include "OCLStream.h"
 
 
 const unsigned int ARRAY_SIZE = 52428800;
@@ -45,7 +46,10 @@ void run()
   Stream<T> *stream;
 
   // Use the CUDA implementation
-  stream = new CUDAStream<T>(ARRAY_SIZE);
+  //stream = new CUDAStream<T>(ARRAY_SIZE);
+
+  // Use the OpenCL implementation
+  stream = new OCLStream<T>(ARRAY_SIZE);
 
   stream->write_arrays(a, b, c);