opencl-examples's Introduction

OpenCL Example

This is a small collection of OpenCL example to demostrate the OpenCL APIs.

vec_add: A simple vector addition in OpenCL
- vec_add_source.c: Host program to run vec_add.cl from source.
- vec_add_binary.c: Host program to run vec_add.cl from the pre-built binary.
- vec_add_spir.c: Host program to run vec_add.cl from SPIR.
fma: A simple fma program to demostrate clLinkProgram().
cl-compile: A simple program to compile OpenCL to prebuilt binaries.

License

The source code and documentation are hereby granted released in public domain.

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Problem with clBuildProgram

Hi,

Thanks for your very helpful examples. I have encountered a problem trying to use the pre built binary.

I successfully create my binary since I get the message PLATFORM [Apple] --> SUCCESS (1).

But, when trying to use the binary, the function clBuildProgram, gives the error code CL_BUILD_PROGRAM_FAILURE. ¿Any advice?

I'm using this code:

int length = int_par[1];
    
    
    
    cl_int err;
    
    // Query platforms and devices
    cl_platform_id platform;
    err = clGetPlatformIDs(1, &platform, NULL);
    
    cl_device_id device;
    err = clGetDeviceIDs(platform, CL_DEVICE_TYPE_CPU, 1, &device, NULL);
    
    const cl_context_properties prop[] = {
        CL_CONTEXT_PLATFORM, (cl_context_properties)platform,
        0
    };
    
    // Create context
    cl_context context = clCreateContext(prop, 1, &device, NULL, NULL, &err);
    
    // Create program
    unsigned char* program_file = NULL;
    size_t program_size = 0;
    read_file1(&program_file, &program_size, "Kernel.clbin");
    
    cl_program program =
    clCreateProgramWithBinary(context, 1, &device, &program_size,
                              (const unsigned char **)&program_file,
                              NULL, &err);
   if(err!=CL_SUCCESS) Rprintf("clCreateProgramWithBinary!!!!\n%s\n", err_code(err));
err = clBuildProgram(program, 1, &device, NULL, NULL, NULL);
    
    free(program_file);
    
    if (err != CL_SUCCESS)
    {
        size_t len;
        //char buffer[2048*3000];
        
        Rprintf("Error: Failed to build program executable!\n%s\n", err_code(err));
        clGetProgramBuildInfo(program, device, CL_PROGRAM_BUILD_LOG, 0, NULL, &len);
        //char *buffer = (char *) malloc(len);
        //char *buffer = (char*)calloc(len, sizeof(char));
        char *buffer =calloc(len,sizeof(char));
        //memset(buffer, 0, len);
        clGetProgramBuildInfo(program, device, CL_PROGRAM_BUILD_LOG, len, buffer, NULL);
        SEP;
        
        Rprintf("Build Log:\n%s\n", buffer);
        SEP;
        clGetProgramBuildInfo(program, device, CL_PROGRAM_BUILD_STATUS, sizeof(char), buffer, &len);
        Rprintf("Build Status:\n%s\n", buffer);
        SEP;
        clGetProgramBuildInfo(program, device, CL_PROGRAM_BUILD_OPTIONS, sizeof(char), buffer, &len);
        Rprintf("Build Options:\n%s\n", buffer);
        SEP;
        //return EXIT_FAILURE;
    }

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