part5.c
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#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#ifdef __APPLE__
#include <OpenCL/opencl.h>
#else
#include <CL/cl.h>
#endif
#define KERNEL "part4.cl"
int main() {
cl_platform_id platform; cl_device_id device; cl_context context;
cl_program program; cl_int error; cl_build_status status;
FILE* programHandle;
char *programBuffer; char *programLog;
size_t programSize; size_t logSize;
// get first available platform and gpu and create context
clGetPlatformIDs(1, &platform, NULL);
clGetDeviceIDs(platform, CL_DEVICE_TYPE_GPU, 1, &device, NULL);
context = clCreateContext(NULL, 1, &device, NULL, NULL, NULL);
// get size of kernel source
programHandle = fopen(KERNEL, "r");
fseek(programHandle, 0, SEEK_END);
programSize = ftell(programHandle);
rewind(programHandle);
// read kernel source into buffer
programBuffer = (char*) malloc(programSize + 1);
programBuffer[programSize] = '\0';
assert (programSize == fread(programBuffer, sizeof(char), programSize, programHandle));
fclose(programHandle);
// create program from buffer
program = clCreateProgramWithSource(context, 1,
(const char**) &programBuffer, &programSize, NULL);
free(programBuffer);
// build program
const char options[] = "-Werror -cl-std=CL1.1";
error = clBuildProgram(program, 1, &device, options, NULL, NULL);
// build failed
if (error != CL_SUCCESS) {
// check build error and build status first
clGetProgramBuildInfo(program, device, CL_PROGRAM_BUILD_STATUS,
sizeof(cl_build_status), &status, NULL);
// check build log
clGetProgramBuildInfo(program, device,
CL_PROGRAM_BUILD_LOG, 0, NULL, &logSize);
programLog = (char*) calloc (logSize+1, sizeof(char));
clGetProgramBuildInfo(program, device,
CL_PROGRAM_BUILD_LOG, logSize+1, programLog, NULL);
printf("Build failed; error=%d, status=%d, programLog:\n\n%s",
error, status, programLog);
free(programLog);
}
clReleaseContext(context);
return 0;
}
// vim: set ts=4 sw=4: