Equivalent of cudaGetErrorString for cuBLAS?

In CUDA 5.0, assuming you installed the samples, there is a file ..../samples/common/inc/helper_cuda.h which has the following:

#ifdef CUBLAS_API_H_
// cuBLAS API errors
static const char *_cudaGetErrorEnum(cublasStatus_t error)
{
    switch (error)
    {
        case CUBLAS_STATUS_SUCCESS:
            return "CUBLAS_STATUS_SUCCESS";

        case CUBLAS_STATUS_NOT_INITIALIZED:
            return "CUBLAS_STATUS_NOT_INITIALIZED";

        case CUBLAS_STATUS_ALLOC_FAILED:
            return "CUBLAS_STATUS_ALLOC_FAILED";

        case CUBLAS_STATUS_INVALID_VALUE:
            return "CUBLAS_STATUS_INVALID_VALUE";

        case CUBLAS_STATUS_ARCH_MISMATCH:
            return "CUBLAS_STATUS_ARCH_MISMATCH";

        case CUBLAS_STATUS_MAPPING_ERROR:
            return "CUBLAS_STATUS_MAPPING_ERROR";

        case CUBLAS_STATUS_EXECUTION_FAILED:
            return "CUBLAS_STATUS_EXECUTION_FAILED";

        case CUBLAS_STATUS_INTERNAL_ERROR:
            return "CUBLAS_STATUS_INTERNAL_ERROR";
    }

    return "<unknown>";
}
#endif

There is probably something similar in previous versions of the CUDA SDK (Samples). This is not in answer to a question "is something built in" if you asked that, but in answer to your question "have any cuBLAS users written a function like this?"

I'm still curious whether there's a built-in way to get error strings in cuBLAS, but I wrote my own for now.

According to Section 8.1 of the cuBLAS Guide there are only 8 types of cublasError_t values in cuBLAS. I printed them out...

printf("CUBLAS_STATUS_SUCCESS = %d \n", CUBLAS_STATUS_SUCCESS);
printf("CUBLAS_STATUS_NOT_INITIALIZED = %d \n", CUBLAS_STATUS_NOT_INITIALIZED);
printf("CUBLAS_STATUS_ALLOC_FAILED = %d \n", CUBLAS_STATUS_ALLOC_FAILED);
printf("CUBLAS_STATUS_INVALID_VALUE = %d \n", CUBLAS_STATUS_INVALID_VALUE);
printf("CUBLAS_STATUS_ARCH_MISMATCH = %d \n", CUBLAS_STATUS_ARCH_MISMATCH);
printf("CUBLAS_STATUS_MAPPING_ERROR = %d \n", CUBLAS_STATUS_MAPPING_ERROR);
printf("CUBLAS_STATUS_EXECUTION_FAILED = %d \n", CUBLAS_STATUS_EXECUTION_FAILED);
printf("CUBLAS_STATUS_INTERNAL_ERROR = %d \n", CUBLAS_STATUS_INTERNAL_ERROR);

The printout:

CUBLAS_STATUS_SUCCESS = 0 
CUBLAS_STATUS_NOT_INITIALIZED = 1 
CUBLAS_STATUS_ALLOC_FAILED = 3 
CUBLAS_STATUS_INVALID_VALUE = 7 
CUBLAS_STATUS_ARCH_MISMATCH = 8 
CUBLAS_STATUS_MAPPING_ERROR = 11 
CUBLAS_STATUS_EXECUTION_FAILED = 13 
CUBLAS_STATUS_INTERNAL_ERROR = 14

My function to get the cuBLAS error string:

const char* cublasGetErrorString(cublasStatus_t status)
{
    switch(status)
    {
        case CUBLAS_STATUS_SUCCESS: return "CUBLAS_STATUS_SUCCESS";
        case CUBLAS_STATUS_NOT_INITIALIZED: return "CUBLAS_STATUS_NOT_INITIALIZED";
        case CUBLAS_STATUS_ALLOC_FAILED: return "CUBLAS_STATUS_ALLOC_FAILED";
        case CUBLAS_STATUS_INVALID_VALUE: return "CUBLAS_STATUS_INVALID_VALUE"; 
        case CUBLAS_STATUS_ARCH_MISMATCH: return "CUBLAS_STATUS_ARCH_MISMATCH"; 
        case CUBLAS_STATUS_MAPPING_ERROR: return "CUBLAS_STATUS_MAPPING_ERROR";
        case CUBLAS_STATUS_EXECUTION_FAILED: return "CUBLAS_STATUS_EXECUTION_FAILED"; 
        case CUBLAS_STATUS_INTERNAL_ERROR: return "CUBLAS_STATUS_INTERNAL_ERROR"; 
    }
    return "unknown error";
}