Add main method - setup OpenCL for default GPU device

ocl-stream.cpp

@@ -0,0 +1,77 @@
+
+#include <iostream>
+#include <fstream>
+#include <vector>
+
+#define __CL_ENABLE_EXCEPTIONS
+#include "cl.hpp"
+
+#define DATATYPE double
+#define ARRAY_SIZE 1000000
+
+struct badfile : public std::exception
+{
+  virtual const char * what () const throw ()
+  {
+    return "Cannot open kernel file";
+  }
+};
+
+
+
+int main(void)
+{
+	try
+	{
+		// Open the Kernel source
+		std::ifstream in("ocl-stream-kernels.cl");
+		if (!in.is_open()) throw badfile();
+		std::string kernels(std::istreambuf_iterator<char>(in), (std::istreambuf_iterator<char>()));
+
+		// Setup OpenCL
+		cl::Context context(CL_DEVICE_TYPE_GPU);
+		cl::CommandQueue queue(context);
+		cl::Program program(context, kernels);
+
+		try
+		{
+			program.build();
+		}
+		catch (cl::Error& e)
+		{
+			std::vector<cl::Device> devices = context.getInfo<CL_CONTEXT_DEVICES>();
+			std::string buildlog = program.getBuildInfo<CL_PROGRAM_BUILD_LOG>(devices[0]);
+			std::cerr
+				<< "Build error:"
+				<< buildlog
+				<< std::endl;
+			throw e;
+		}
+
+		cl::make_kernel<cl::Buffer, cl::Buffer> copy(program, "copy");
+		cl::make_kernel<cl::Buffer, cl::Buffer> mul(program, "mul");
+		cl::make_kernel<cl::Buffer, cl::Buffer> add(program, "add");
+		cl::make_kernel<cl::Buffer, cl::Buffer> triad(program, "triad");
+
+		// Create host vectors
+		std::vector<DATATYPE> h_a(ARRAY_SIZE, 1.0);
+		std::vector<DATATYPE> h_b(ARRAY_SIZE, 2.0);
+		std::vector<DATATYPE> h_c(ARRAY_SIZE, 0.0);
+	}
+	// Catch OpenCL Errors and display information
+	catch (cl::Error& e)
+	{
+		std::cerr
+			<< "Error: "
+			<< e.what()
+			<< "(" << e.err() << ")"
+			<< std::endl;
+	}
+	catch (std::exception& e)
+	{
+		std::cerr
+			<< "Error: "
+			<< e.what()
+			<< std::endl;
+	}
+}