clCreateProgramWithSource error

Hi guys,

I started writing an OpenCL Wrapper class, which initialises OpenCL Context and some more. Why I did this? Just to get to know OpenCL, nothing special. The class is not supposed to ever be used, but it’s the easiest way for me to learn.

Now I have a weird problem, which happens to occur even without using the code from the class. When I try to run the program I wrote using OpenCL. This problem occurs with and without using the class on own code examples.

Following is happening:

ciErrNum = clBuildProgram(cpProgram, 0, NULL, NULL, NULL, NULL);

As soon as the above line is reached, ciErrNum returns -42, which stands for CL_INVALID_BINARY. I’m not using clCreateBinary, but rather clCreateProgramWithSource. I used the file loading solution from the OCL tools and I used my own. It is always the same. The code compiles fine without any warnings or errors. I use VS2010 and the newest OpenCL sdk from nvidia. Videocard is a 470GTX.

This is my test code right now:

ciErrNum = clGetPlatformIDs( 1, &cpPlatform, NULL );

	//Get the devices

	ciErrNum = clGetDeviceIDs(cpPlatform, CL_DEVICE_TYPE_GPU, 0, NULL, &uiNumDevices);

	cdDevices = (cl_device_id *)malloc(uiNumDevices * sizeof(cl_device_id) );

	ciErrNum = clGetDeviceIDs(cpPlatform, CL_DEVICE_TYPE_GPU, uiNumDevices, cdDevices, NULL);

	//Create the context

	cxGPUContext = clCreateContext(0, uiNumDevices, cdDevices, NULL, NULL, &ciErrNum);

	// create the command queue

	cqCommandQueue = clCreateCommandQueue(cxGPUContext, cdDevice, 0, &ciErrNum);

	cdDevice = cdDevices[0];

	   // Program Setup

	size_t program_length;

	cPathAndName = shrFindFilePath("", argv[0]);

	cSourceCL = oclLoadProgSource(cPathAndName, "", &program_length);

	// create the program

	cpProgram = clCreateProgramWithSource(cxGPUContext, 1,

					  (const char **) &cSourceCL , &program_length, &ciErrNum);


	// build the program

	ciErrNum = clBuildProgram(cpProgram, 0, NULL, NULL, NULL, NULL);

	if( ciErrNum != CL_SUCCESS ) {

		printf( "Nope, no success here..." );


Try using clGetProgramBuildInfo after clBuildProgram, it might give you some info, and check clCreateProgramWithSource result, maybe error from this method result in invalid binary in cpProgram?