Build 构建opencl内核失败

当我在OpenCl代码中使用

clBuildProgram

时，它会失败，错误代码为-11，没有任何日志信息

下面是我的代码的样子：

  ret = clBuildProgram(program, 1, &device_id, NULL, NULL, NULL);

  if (ret != CL_SUCCESS)
    {
        size_t len;
        char buffer[2048];
    cl_build_status bldstatus;
    printf("\nError %d: Failed to build program executable [ %s ]\n",ret,get_error_string(ret));
        ret = clGetProgramBuildInfo(program, device_id, CL_PROGRAM_BUILD_STATUS, sizeof(bldstatus), (void *)&bldstatus, &len);
        printf("Build Status %d: %s\n",ret,get_error_string(ret));
    printf("INFO: %s\n", get_error_string(bldstatus));
        ret = clGetProgramBuildInfo(program, device_id, CL_PROGRAM_BUILD_OPTIONS, sizeof(buffer), buffer, &len);
        printf("Build Options %d: %s\n",ret,get_error_string(ret));
    printf("INFO: %s\n", buffer);   
        ret = clGetProgramBuildInfo(program, device_id, CL_PROGRAM_BUILD_LOG, sizeof(buffer), buffer, &len);    
    printf("Build Log %d: %s\n",ret,get_error_string(ret));
    printf("%s\n", buffer);
    (void)infoinfo(platform_id,device_id);
    exit(1);
    }

Error -11: Failed to build program executable [ CL_BUILD_PROGRAM_FAILURE ]
Build Status 0: CL_SUCCESS
INFO: CL_DEVICE_NOT_AVAILABLE
Build Options 0: CL_SUCCESS
INFO: 
Build Log -30: CL_INVALID_VALUE


CL_PLATFORM_NAME : NVIDIA CUDA
CL_PLATFORM_VERSION : OpenCL 1.1 CUDA 4.2.1
Device name : Tesla K20m
Driver version : 319.32
Global Memory (MB) : 4799
Global Memory Cache (KB) : 208
Local Memory (KB) : 48
Max clock (MHz) : 705
Max Work Group Size : 1024
Number of parallel compute cores : 13
Is the device available : yes

以下是输出结果：

  ret = clBuildProgram(program, 1, &device_id, NULL, NULL, NULL);

  if (ret != CL_SUCCESS)
    {
        size_t len;
        char buffer[2048];
    cl_build_status bldstatus;
    printf("\nError %d: Failed to build program executable [ %s ]\n",ret,get_error_string(ret));
        ret = clGetProgramBuildInfo(program, device_id, CL_PROGRAM_BUILD_STATUS, sizeof(bldstatus), (void *)&bldstatus, &len);
        printf("Build Status %d: %s\n",ret,get_error_string(ret));
    printf("INFO: %s\n", get_error_string(bldstatus));
        ret = clGetProgramBuildInfo(program, device_id, CL_PROGRAM_BUILD_OPTIONS, sizeof(buffer), buffer, &len);
        printf("Build Options %d: %s\n",ret,get_error_string(ret));
    printf("INFO: %s\n", buffer);   
        ret = clGetProgramBuildInfo(program, device_id, CL_PROGRAM_BUILD_LOG, sizeof(buffer), buffer, &len);    
    printf("Build Log %d: %s\n",ret,get_error_string(ret));
    printf("%s\n", buffer);
    (void)infoinfo(platform_id,device_id);
    exit(1);
    }

Error -11: Failed to build program executable [ CL_BUILD_PROGRAM_FAILURE ]
Build Status 0: CL_SUCCESS
INFO: CL_DEVICE_NOT_AVAILABLE
Build Options 0: CL_SUCCESS
INFO: 
Build Log -30: CL_INVALID_VALUE


CL_PLATFORM_NAME : NVIDIA CUDA
CL_PLATFORM_VERSION : OpenCL 1.1 CUDA 4.2.1
Device name : Tesla K20m
Driver version : 319.32
Global Memory (MB) : 4799
Global Memory Cache (KB) : 208
Local Memory (KB) : 48
Max clock (MHz) : 705
Max Work Group Size : 1024
Number of parallel compute cores : 13
Is the device available : yes

所以，碰巧你们能在上面的几行中看到任何错误或奇怪的东西吗

谢谢,

---

Éric.

我修改了代码并增加了缓冲区大小：

  ret = clBuildProgram(program, 1, &device_id, NULL, NULL, NULL);

  if (ret != CL_SUCCESS)
    {
        size_t len;
        char buffer[204800];
    cl_build_status bldstatus;
    printf("\nError %d: Failed to build program executable [ %s ]\n",ret,get_error_string(ret));
        ret = clGetProgramBuildInfo(program, device_id, CL_PROGRAM_BUILD_STATUS, sizeof(bldstatus), (void *)&bldstatus, &len);
        if (ret != CL_SUCCESS)
          {
        printf("Build Status error %d: %s\n",ret,get_error_string(ret));
        exit(1);
      }     
    if (bldstatus == CL_BUILD_SUCCESS) printf("Build Status: CL_BUILD_SUCCESS\n");
    if (bldstatus == CL_BUILD_NONE) printf("Build Status: CL_BUILD_NONE\n"); 
    if (bldstatus == CL_BUILD_ERROR) printf("Build Status: CL_BUILD_ERROR\n");
    if (bldstatus == CL_BUILD_IN_PROGRESS) printf("Build Status: CL_BUILD_IN_PROGRESS\n");  
        ret = clGetProgramBuildInfo(program, device_id, CL_PROGRAM_BUILD_OPTIONS, sizeof(buffer), buffer, &len);
        if (ret != CL_SUCCESS)
          {
        printf("Build Options error %d: %s\n",ret,get_error_string(ret));
        exit(1);
      }        
    printf("Build Options: %s\n", buffer);  
        ret = clGetProgramBuildInfo(program, device_id, CL_PROGRAM_BUILD_LOG, sizeof(buffer), buffer, &len);    
        if (ret != CL_SUCCESS)
          {
        printf("Build Log error %d: %s\n",ret,get_error_string(ret));
        exit(1);
      }     
    printf("Build Log:\n%s\n", buffer);
    exit(1);
    }

我现在明白了：

Error -11: Failed to build program executable [ CL_BUILD_PROGRAM_FAILURE ]
Build Status: CL_BUILD_ERROR
Build Options:
Build Log:
:4:85: error: must specify ....

所以，它起作用了

---

谢谢你的帮助

看起来您可能使用了错误的clGetProgramBuildInfo（）。第一次调用它时，它应该告诉主机上需要的缓冲区大小：

clGetProgramBuildInfo（程序、设备id、CL程序构建日志、NULL、NULL和len）

然后在主机上分配内存：

char*log=new char[len]//或您使用的任何内容

然后调用clGetProgramBuildInfo（）：

clGetProgramBuildInfo（程序、设备id、CL程序、构建日志、len、LOG、null）
有人在对你撒谎。该设备是否按照您的infoinfo功能告诉您的那样可用，还是按照
get\u error\u string（bldstatus）
的说明不可用？更多的代码？我想这是我调用
clGetProgramBuildInfo
的方式，或者是我在
get\u error\u string
子例程中使用的错误代码定义。实际上，
get\u error\u string
子例程返回与OpenCl错误代码对应的字符串。该代码可能与cl_build_状态代码不对应！我用Austin的建议更新了我的代码。它就像一个符咒。谢谢。嘿，Eric，几乎所有查询设备的OpenCL函数都是这样的：从设备请求信息大小，在主机上分配内存，将信息从设备复制到主机。