我在Linux上使用ATI RV770图形卡,OpenCl 1.0和ati-stream-sdk-v2.3-lnx64。
运行包含以下两部分的内核代码以构建内核程序时,我得到了错误代码(-11),即cl_build_program_failure
。这是否意味着内核程序已编译,如果未编译,则如何编译和调试?
const char* KernelPath = "abc_kernel.cl"; //kernel program is in separate file but in same directory of host code..
/ *从内核源******* /创建程序对象
char* sProgramSource = readKernelSource(KernelPath);
size_t sourceSize = strlen(sProgramSource) ;
program = clCreateProgramWithSource(context, 1,(const char **) &sProgramSource,&sourceSize, &err);
checkStatus("error while creating program",err);
/ *构建(编译和链接)程序******* /
char* options = (char* )malloc(10*sizeof(char));
strcpy(options, "-g");
err = clBuildProgram(program, num_devices, devices_id, options, NULL, NULL);
checkStatus("Build Program Failed", err); //This line throwing the error....
读取内核程序的功能如下:
/ *读取程序源文件* /
char* readKernelSource(const char* kernelSourcePath){
FILE *fp = NULL;
size_t sourceLength;
char *sourceString ;
fp = fopen( kernelSourcePath , "r");
if(fp == 0)
{
printf("failed to open file");
return NULL;
}
// get the length of the source code
fseek(fp, 0, SEEK_END);
sourceLength = ftell(fp);
rewind(fp);
// allocate a buffer for the source code string and read it in
sourceString = (char *)malloc( sourceLength + 1);
if( fread( sourceString, 1, sourceLength, fp) !=sourceLength )
{
printf("\n\t Error : Fail to read file ");
return 0;
}
sourceString[sourceLength+1]='\0';
fclose(fp);
return sourceString;
} // readKernelSource的结尾
谁能告诉我如何解决它?
这是否意味着在运行时或其他原因是OpenCl编译错误?
//使用如下所示的clGetProgramBuildInfo()打印build_log信息,但是为什么不打印任何内容?
char * build_log;
size_t log_size;
// First call to know the proper size
err = clGetProgramBuildInfo(program, devices_id, CL_PROGRAM_BUILD_LOG, 0, NULL, &log_size);
build_log = (char* )malloc((log_size+1));
// Second call to get the log
err = clGetProgramBuildInfo(program, devices_id, CL_PROGRAM_BUILD_LOG, log_size, build_log, NULL);
build_log[log_size] = '\0';
printf("--- Build log ---\n ");
fprintf(stderr, "%s\n", build_log);
free(build_log);
最佳答案
此错误通常是由内核代码中的语法错误引起的。您可以使用标志CL_PROGRAM_BUILD_LOG调用OpenCL函数clGetProgramBuildInfo来访问编译器生成的日志。该日志包含您在命令行上编译时可能习惯的输出(错误,警告等)。
例如,您可以在调用clBuildProgram之后添加类似于以下内容的内容:
if (err == CL_BUILD_PROGRAM_FAILURE) {
// Determine the size of the log
size_t log_size;
clGetProgramBuildInfo(program, devices_id[0], CL_PROGRAM_BUILD_LOG, 0, NULL, &log_size);
// Allocate memory for the log
char *log = (char *) malloc(log_size);
// Get the log
clGetProgramBuildInfo(program, devices_id[0], CL_PROGRAM_BUILD_LOG, log_size, log, NULL);
// Print the log
printf("%s\n", log);
}
您还可以在AMD APP SDK的SDKCommon.cpp中看到函数buildOpenCLProgram(),以获取真实示例。
关于debugging - 错误代码(-11)::在OpenCL中出现错误“cl_build_program_failure”的所有可能原因是什么?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/9464190/