C++ cusparseCreate函数代码示例

void Caffe::SetDevice(const int device_id) {
  int current_device;
  CUDA_CHECK(cudaGetDevice(&current_device));
  if (current_device == device_id) {
    return;
  }
  // The call to cudaSetDevice must come before any calls to Get, which
  // may perform initialization using the GPU.
  CUDA_CHECK(cudaSetDevice(device_id));
  if (Get().cublas_handle_) CUBLAS_CHECK(cublasDestroy(Get().cublas_handle_));
  if (Get().cusparse_descr_)CUSPARSE_CHECK(cusparseDestroyMatDescr(Get().cusparse_descr_));
  if (Get().cusparse_handle_)CUSPARSE_CHECK(cusparseDestroy(Get().cusparse_handle_));
  if (Get().curand_generator_) {
    CURAND_CHECK(curandDestroyGenerator(Get().curand_generator_));
  }
  CUSPARSE_CHECK(cusparseCreate(&Get().cusparse_handle_));
  CUSPARSE_CHECK(cusparseCreateMatDescr(&Get().cusparse_descr_));
//  cusparseSetMatType(cusparse_descr_,CUSPARSE_MATRIX_TYPE_GENERAL);
//  cusparseSetMatIndexBase(cusparse_descr_,CUSPARSE_INDEX_BASE_ZERO);
  LOG(INFO)<<"set descr";
  CUBLAS_CHECK(cublasCreate(&Get().cublas_handle_));
  CURAND_CHECK(curandCreateGenerator(&Get().curand_generator_,
      CURAND_RNG_PSEUDO_DEFAULT));
  CURAND_CHECK(curandSetPseudoRandomGeneratorSeed(Get().curand_generator_,
      cluster_seedgen()));
}

// initialize CUDA
ssp_cuda *ssp_init_cuda() {
    ssp_cuda *cudaHandle = (ssp_cuda*)malloc(sizeof(ssp_cuda));
    if (!cudaHandle) {
        fprintf(stderr,"ssp_init_cuda: cudaHandle memory allocation failed.\n");
        return NULL;
    }
    cudaHandle->cusparse_handle = 0;
    cudaHandle->cusparse_matDescr = 0;

    cusparseStatus_t status = cusparseCreate(&cudaHandle->cusparse_handle);

    if (status != CUSPARSE_STATUS_SUCCESS) {
        ssp_finalize_cuda(cudaHandle);

        fprintf(stderr,"ssp_init_cuda: cusparse initialization failed.\n");
        return NULL;
    }

    status = cusparseCreateMatDescr(&cudaHandle->cusparse_matDescr); 
    if (status != CUSPARSE_STATUS_SUCCESS) {
        ssp_finalize_cuda(cudaHandle);

        fprintf(stderr,"ssp_init_cuda: cusparse matrix setup failed.\n");
        return NULL;
    }       
    cusparseSetMatType(cudaHandle->cusparse_matDescr,CUSPARSE_MATRIX_TYPE_GENERAL);
    cusparseSetMatIndexBase(cudaHandle->cusparse_matDescr,CUSPARSE_INDEX_BASE_ZERO);


    return cudaHandle;
}

 CudaSparseSingleton()
 {
   cusparseCreate( & handle );
   cusparseCreateMatDescr( & descra );
   cusparseSetMatType(       descra , CUSPARSE_MATRIX_TYPE_GENERAL );
   cusparseSetMatIndexBase(  descra , CUSPARSE_INDEX_BASE_ZERO );
 }

Caffe::Caffe()
    : cublas_handle_(NULL),cusparse_handle_(NULL),cusparse_descr_(NULL),curand_generator_(NULL),random_generator_(),mode_(Caffe::CPU), solver_count_(1), root_solver_(true){
  // Try to create a cublas handler, and report an error if failed (but we will
  // keep the program running as one might just want to run CPU code).
    LOG(INFO)<<"caffe init.";
    if (cublasCreate(&cublas_handle_) != CUBLAS_STATUS_SUCCESS) {
    LOG(ERROR) << "Cannot create Cublas handle. Cublas won't be available.";
  }
//add cusparse handler
  if (cusparseCreate(&cusparse_handle_)!=CUSPARSE_STATUS_SUCCESS){
    LOG(ERROR) << "cannot create Cusparse handle,Cusparse won't be available.";
  }
 if(cusparseCreateMatDescr(&cusparse_descr_)!=CUSPARSE_STATUS_SUCCESS){
   LOG(ERROR) << "cannot create Cusparse descr,descr won't be available.";
 }else{
  cusparseSetMatType(cusparse_descr_,CUSPARSE_MATRIX_TYPE_GENERAL);
  cusparseSetMatIndexBase(cusparse_descr_,CUSPARSE_INDEX_BASE_ZERO);
  LOG(INFO)<<"init descr";
 }
  // Try to create a curand handler.
  if (curandCreateGenerator(&curand_generator_, CURAND_RNG_PSEUDO_DEFAULT)
      != CURAND_STATUS_SUCCESS ||
      curandSetPseudoRandomGeneratorSeed(curand_generator_, cluster_seedgen())
      != CURAND_STATUS_SUCCESS) {
    LOG(ERROR) << "Cannot create Curand generator. Curand won't be available.";
  }
  LOG(INFO)<<"caffe finish";
}

magma_int_t
magma_dapplycuicc_l( magma_d_vector b, magma_d_vector *x, 
                    magma_d_preconditioner *precond ){

            double one = MAGMA_D_MAKE( 1.0, 0.0);

            // CUSPARSE context //
            cusparseHandle_t cusparseHandle;
            cusparseStatus_t cusparseStatus;
            cusparseStatus = cusparseCreate(&cusparseHandle);
             if(cusparseStatus != 0)    printf("error in Handle.\n");


            cusparseMatDescr_t descrL;
            cusparseStatus = cusparseCreateMatDescr(&descrL);
             if(cusparseStatus != 0)    printf("error in MatrDescr.\n");

            cusparseStatus =
            cusparseSetMatType(descrL,CUSPARSE_MATRIX_TYPE_TRIANGULAR);
             if(cusparseStatus != 0)    printf("error in MatrType.\n");

            cusparseStatus =
            cusparseSetMatDiagType (descrL, CUSPARSE_DIAG_TYPE_NON_UNIT);
             if(cusparseStatus != 0)    printf("error in DiagType.\n");


            cusparseStatus =
            cusparseSetMatFillMode(descrL,CUSPARSE_FILL_MODE_LOWER);
             if(cusparseStatus != 0)    printf("error in fillmode.\n");

            cusparseStatus =
            cusparseSetMatIndexBase(descrL,CUSPARSE_INDEX_BASE_ZERO);
             if(cusparseStatus != 0)    printf("error in IndexBase.\n");


            // end CUSPARSE context //

            cusparseStatus =
            cusparseDcsrsv_solve(   cusparseHandle, 
                                    CUSPARSE_OPERATION_NON_TRANSPOSE, 
                                    precond->M.num_rows, &one, 
                                    descrL,
                                    precond->M.val,
                                    precond->M.row,
                                    precond->M.col,
                                    precond->cuinfoL,
                                    b.val,
                                    x->val );
             if(cusparseStatus != 0)   printf("error in L triangular solve:%p.\n", precond->cuinfoL );

    cusparseDestroyMatDescr( descrL );
    cusparseDestroy( cusparseHandle );
    magma_device_sync();
    return MAGMA_SUCCESS;



}

TxMatrixOptimizationDataCU::TxMatrixOptimizationDataCU()
    : handle(0), matDescr(0), localMatrix(0), gsContext(0), f2c(0),
      workvector(0) {
  cusparseStatus_t err = cusparseCreate(&handle);
  CHKCUSPARSEERR(err);
#ifndef HPCG_NOMPI
  elementsToSend = 0;
#endif
}

    cuSparseHandleType(bool transposeA, bool transposeB){
      cusparseStatus_t status;
      status= cusparseCreate(&handle);
      if (status != CUSPARSE_STATUS_SUCCESS) {
        std::cerr << ("cusparseCreate ERROR") << std::endl;
        return;
      }
      cusparseSetPointerMode(handle, CUSPARSE_POINTER_MODE_HOST);

      if (transposeA){
        transA = CUSPARSE_OPERATION_TRANSPOSE;
      }
      else {
        transA  = CUSPARSE_OPERATION_NON_TRANSPOSE;
      }
      if (transposeB){
        transB = CUSPARSE_OPERATION_TRANSPOSE;
      }
      else {
        transB  = CUSPARSE_OPERATION_NON_TRANSPOSE;
      }


      status = cusparseCreateMatDescr(&a_descr);
      if (status != CUSPARSE_STATUS_SUCCESS) {
        std::cerr << "cusparseCreateMatDescr a_descr ERROR" << std::endl;
        return;
      }
      cusparseSetMatType(a_descr,CUSPARSE_MATRIX_TYPE_GENERAL);
      cusparseSetMatIndexBase(a_descr,CUSPARSE_INDEX_BASE_ZERO);

      status = cusparseCreateMatDescr(&b_descr);
      if (status != CUSPARSE_STATUS_SUCCESS) {
        std::cerr << ("cusparseCreateMatDescr b_descr ERROR") << std::endl;
        return;
      }
      cusparseSetMatType(b_descr,CUSPARSE_MATRIX_TYPE_GENERAL);
      cusparseSetMatIndexBase(b_descr,CUSPARSE_INDEX_BASE_ZERO);

      status = cusparseCreateMatDescr(&c_descr);
      if (status != CUSPARSE_STATUS_SUCCESS) {
        std::cerr << ("cusparseCreateMatDescr  c_descr ERROR") << std::endl;
        return;
      }
      cusparseSetMatType(c_descr,CUSPARSE_MATRIX_TYPE_GENERAL);
      cusparseSetMatIndexBase(c_descr,CUSPARSE_INDEX_BASE_ZERO);
    }

  CudaSparseSingleton()
  {
    status = cusparseCreate(&handle);
    if(status != CUSPARSE_STATUS_SUCCESS)
    {
      throw std::runtime_error( std::string("ERROR - CUSPARSE Library Initialization failed" ) );
    }

    status = cusparseCreateMatDescr(&descra);
    if(status != CUSPARSE_STATUS_SUCCESS)
    {
      throw std::runtime_error( std::string("ERROR - CUSPARSE Library Matrix descriptor failed" ) );
    }

    cusparseSetMatType(descra , CUSPARSE_MATRIX_TYPE_GENERAL);
    cusparseSetMatIndexBase(descra , CUSPARSE_INDEX_BASE_ZERO);
  }

		void cuda_running_configuration::update_parameters()
		{
	        cuda_safe_call(cudaDriverGetVersion(&driver_version));
	        cuda_safe_call(cudaRuntimeGetVersion(&runtime_version));

			int device_count;
		    cuda_safe_call(cudaGetDeviceCount(&device_count));
			if (device_count <= 0)
				throw neural_network_exception("No CUDA capable devices are found");

			if (device_id >= device_count)
				throw neural_network_exception((boost::format("Device ID %1% specified while %2% devices are available") % device_id % device_count).str());

			cudaDeviceProp device_prop;
			cuda_safe_call(cudaGetDeviceProperties(&device_prop, device_id));
			device_name = device_prop.name;
			compute_capability_major = device_prop.major;
			compute_capability_minor = device_prop.minor;
			clock_rate = device_prop.clockRate;
			memory_clock_rate = device_prop.memoryClockRate;
			memory_bus_width = device_prop.memoryBusWidth;
			global_memory_size = device_prop.totalGlobalMem;
			ecc_enabled = (device_prop.ECCEnabled != 0);
			l2_cache_size = device_prop.l2CacheSize;
			multiprocessor_count = device_prop.multiProcessorCount;
			smem_per_block = device_prop.sharedMemPerBlock;
			max_threads_per_multiprocessor = device_prop.maxThreadsPerMultiProcessor;
			max_threads_per_block = device_prop.maxThreadsPerBlock;
			for(int i = 0; i < sizeof(max_threads_dim) / sizeof(max_threads_dim[0]); ++i)
				max_threads_dim[i] = device_prop.maxThreadsDim[i];
			for(int i = 0; i < sizeof(max_grid_size) / sizeof(max_grid_size[0]); ++i)
				max_grid_size[i] = device_prop.maxGridSize[i];
			max_texture_1d_linear = device_prop.maxTexture1DLinear;
			texture_alignment = device_prop.textureAlignment;
			pci_bus_id = device_prop.pciBusID;
			pci_device_id = device_prop.pciDeviceID;
		#ifdef _WIN32
			tcc_mode = (device_prop.tccDriver != 0);
		#endif

			cuda_safe_call(cudaSetDevice(device_id));

			cublas_safe_call(cublasCreate(&cublas_handle));

			cusparse_safe_call(cusparseCreate(&cusparse_handle));
		}

extern "C" magma_int_t
magma_capplycumicc_l(
    magma_c_matrix b,
    magma_c_matrix *x,
    magma_c_preconditioner *precond,
    magma_queue_t queue )
{
    magma_int_t info = 0;
    
    cusparseHandle_t cusparseHandle=NULL;
    cusparseMatDescr_t descrL=NULL;
    
    magmaFloatComplex one = MAGMA_C_MAKE( 1.0, 0.0);

    // CUSPARSE context //
    CHECK_CUSPARSE( cusparseCreate( &cusparseHandle ));
    CHECK_CUSPARSE( cusparseSetStream( cusparseHandle, queue ));
    CHECK_CUSPARSE( cusparseCreateMatDescr( &descrL ));
    CHECK_CUSPARSE( cusparseSetMatType( descrL, CUSPARSE_MATRIX_TYPE_TRIANGULAR ));
    CHECK_CUSPARSE( cusparseSetMatDiagType( descrL, CUSPARSE_DIAG_TYPE_NON_UNIT ));
    CHECK_CUSPARSE( cusparseSetMatFillMode( descrL, CUSPARSE_FILL_MODE_LOWER ));
    CHECK_CUSPARSE( cusparseSetMatIndexBase( descrL, CUSPARSE_INDEX_BASE_ZERO ));
    CHECK_CUSPARSE( cusparseCcsrsm_solve( cusparseHandle,
                            CUSPARSE_OPERATION_NON_TRANSPOSE,
                            precond->M.num_rows,
                            b.num_rows*b.num_cols/precond->M.num_rows,
                            &one,
                            descrL,
                            precond->M.dval,
                            precond->M.drow,
                            precond->M.dcol,
                            precond->cuinfoL,
                            b.dval,
                            precond->M.num_rows,
                            x->dval,
                            precond->M.num_rows ));
    
    magma_device_sync();

cleanup:
    cusparseDestroyMatDescr( descrL );
    cusparseDestroy( cusparseHandle );
    return info; 
}

inline cusparseHandle_t cusparse_handle(const command_queue &q) {
    typedef std::shared_ptr<std::remove_pointer<cusparseHandle_t>::type> smart_handle;
    typedef vex::detail::object_cache<vex::detail::index_by_context, smart_handle> cache_type;

    static cache_type cache;

    auto h = cache.find(q);

    if (h == cache.end()) {
        select_context(q);
        cusparseHandle_t handle;
        cuda_check( cusparseCreate(&handle) );
        cuda_check( cusparseSetStream(handle, q.raw()) );

        h = cache.insert(q, smart_handle(handle, detail::deleter()));
    }

    return h->second.get();
}

void THCState_reserveDeviceSparseHandles(THCState* state, int device, int numSparseHandles)
{
  int prevDev = -1;
  THCCudaResourcesPerDevice* res = THCState_getDeviceResourcePtr(state, device);
  if (numSparseHandles <= res->numSparseHandles) {
    return;
  }

  THCudaCheck(cudaGetDevice(&prevDev));
  THCudaCheck(cudaSetDevice(device));

  size_t size = numSparseHandles * sizeof(cusparseHandle_t);
  cusparseHandle_t* handles = (cusparseHandle_t*) realloc(res->sparseHandles, size);
  for (int i = res->numSparseHandles; i < numSparseHandles; ++i) {
    handles[i] = NULL;
    THCusparseCheck(cusparseCreate(&handles[i]));
  }
  res->sparseHandles = handles;
  res->numSparseHandles = numSparseHandles;

  THCudaCheck(cudaSetDevice(prevDev));
}

int main(int argc, char **argv)
{
    int N = 0, nz = 0, *I = NULL, *J = NULL;
    float *val = NULL;
    const float tol = 1e-5f;
    const int max_iter = 10000;
    float *x;
    float *rhs;
    float a, b, na, r0, r1;
    float dot;
    float *r, *p, *Ax;
    int k;
    float alpha, beta, alpham1;

    printf("Starting [%s]...\n", sSDKname);

    // This will pick the best possible CUDA capable device
    cudaDeviceProp deviceProp;
    int devID = findCudaDevice(argc, (const char **)argv);
    checkCudaErrors(cudaGetDeviceProperties(&deviceProp, devID));

#if defined(__APPLE__) || defined(MACOSX)
    fprintf(stderr, "Unified Memory not currently supported on OS X\n");
    cudaDeviceReset();
    exit(EXIT_WAIVED);
#endif

    if (sizeof(void *) != 8)
    {
        fprintf(stderr, "Unified Memory requires compiling for a 64-bit system.\n");
        cudaDeviceReset();
        exit(EXIT_WAIVED);
    }

    if (((deviceProp.major << 4) + deviceProp.minor) < 0x30)
    {
        fprintf(stderr, "%s requires Compute Capability of SM 3.0 or higher to run.\nexiting...\n", argv[0]);

        cudaDeviceReset();
        exit(EXIT_WAIVED);
    }

    // Statistics about the GPU device
    printf("> GPU device has %d Multi-Processors, SM %d.%d compute capabilities\n\n",
           deviceProp.multiProcessorCount, deviceProp.major, deviceProp.minor);

    /* Generate a random tridiagonal symmetric matrix in CSR format */
    N = 1048576;
    nz = (N-2)*3 + 4;

    cudaMallocManaged((void **)&I, sizeof(int)*(N+1));
    cudaMallocManaged((void **)&J, sizeof(int)*nz);
    cudaMallocManaged((void **)&val, sizeof(float)*nz);

    genTridiag(I, J, val, N, nz);

    cudaMallocManaged((void **)&x, sizeof(float)*N);
    cudaMallocManaged((void **)&rhs, sizeof(float)*N);

    for (int i = 0; i < N; i++)
    {
        rhs[i] = 1.0;
        x[i] = 0.0;
    }

    /* Get handle to the CUBLAS context */
    cublasHandle_t cublasHandle = 0;
    cublasStatus_t cublasStatus;
    cublasStatus = cublasCreate(&cublasHandle);

    checkCudaErrors(cublasStatus);

    /* Get handle to the CUSPARSE context */
    cusparseHandle_t cusparseHandle = 0;
    cusparseStatus_t cusparseStatus;
    cusparseStatus = cusparseCreate(&cusparseHandle);

    checkCudaErrors(cusparseStatus);

    cusparseMatDescr_t descr = 0;
    cusparseStatus = cusparseCreateMatDescr(&descr);

    checkCudaErrors(cusparseStatus);

    cusparseSetMatType(descr,CUSPARSE_MATRIX_TYPE_GENERAL);
    cusparseSetMatIndexBase(descr,CUSPARSE_INDEX_BASE_ZERO);

    // temp memory for CG
    checkCudaErrors(cudaMallocManaged((void **)&r, N*sizeof(float)));
    checkCudaErrors(cudaMallocManaged((void **)&p, N*sizeof(float)));
    checkCudaErrors(cudaMallocManaged((void **)&Ax, N*sizeof(float)));

    cudaDeviceSynchronize();

    for (int i=0; i < N; i++)
    {
        r[i] = rhs[i];
    }

    alpha = 1.0;
//.........这里部分代码省略.........

/* Solve Ax=b using the conjugate gradient method a) without any preconditioning, b) using an Incomplete Cholesky preconditioner and c) using an ILU0 preconditioner. */
int main(int argc, char **argv)
{
    const int max_iter = 1000;
    int k, M = 0, N = 0, nz = 0, *I = NULL, *J = NULL;
    int *d_col, *d_row;
    int qatest = 0;
    const float tol = 1e-12f;
    float *x, *rhs;
    float r0, r1, alpha, beta;
    float *d_val, *d_x;
    float *d_zm1, *d_zm2, *d_rm2;
    float *d_r, *d_p, *d_omega, *d_y;
    float *val = NULL;
    float *d_valsILU0;
    float *valsILU0;
    float rsum, diff, err = 0.0;
    float qaerr1, qaerr2 = 0.0;
    float dot, numerator, denominator, nalpha;
    const float floatone = 1.0;
    const float floatzero = 0.0;

    int nErrors = 0;

    printf("conjugateGradientPrecond starting...\n");

    /* QA testing mode */
    if (checkCmdLineFlag(argc, (const char **)argv, "qatest"))
    {
        qatest = 1;
    }

    /* This will pick the best possible CUDA capable device */
    cudaDeviceProp deviceProp;
    int devID = findCudaDevice(argc, (const char **)argv);
    printf("GPU selected Device ID = %d \n", devID);

    if (devID < 0)
    {
        printf("Invalid GPU device %d selected,  exiting...\n", devID);
        exit(EXIT_SUCCESS);
    }

    checkCudaErrors(cudaGetDeviceProperties(&deviceProp, devID));

    /* Statistics about the GPU device */
    printf("> GPU device has %d Multi-Processors, SM %d.%d compute capabilities\n\n",
           deviceProp.multiProcessorCount, deviceProp.major, deviceProp.minor);

    int version = (deviceProp.major * 0x10 + deviceProp.minor);

    if (version < 0x11)
    {
        printf("%s: requires a minimum CUDA compute 1.1 capability\n", sSDKname);

        // cudaDeviceReset causes the driver to clean up all state. While
        // not mandatory in normal operation, it is good practice.  It is also
        // needed to ensure correct operation when the application is being
        // profiled. Calling cudaDeviceReset causes all profile data to be
        // flushed before the application exits
        cudaDeviceReset();
        exit(EXIT_SUCCESS);
    }

    /* Generate a random tridiagonal symmetric matrix in CSR (Compressed Sparse Row) format */
    M = N = 16384;
    nz = 5*N-4*(int)sqrt((double)N);
    I = (int *)malloc(sizeof(int)*(N+1));                              // csr row pointers for matrix A
    J = (int *)malloc(sizeof(int)*nz);                                 // csr column indices for matrix A
    val = (float *)malloc(sizeof(float)*nz);                           // csr values for matrix A
    x = (float *)malloc(sizeof(float)*N);
    rhs = (float *)malloc(sizeof(float)*N);

    for (int i = 0; i < N; i++)
    {
        rhs[i] = 0.0;                                                  // Initialize RHS
        x[i] = 0.0;                                                    // Initial approximation of solution
    }

    genLaplace(I, J, val, M, N, nz, rhs);

    /* Create CUBLAS context */
    cublasHandle_t cublasHandle = 0;
    cublasStatus_t cublasStatus;
    cublasStatus = cublasCreate(&cublasHandle);

    checkCudaErrors(cublasStatus);

    /* Create CUSPARSE context */
    cusparseHandle_t cusparseHandle = 0;
    cusparseStatus_t cusparseStatus;
    cusparseStatus = cusparseCreate(&cusparseHandle);

    checkCudaErrors(cusparseStatus);

    /* Description of the A matrix*/
    cusparseMatDescr_t descr = 0;
    cusparseStatus = cusparseCreateMatDescr(&descr);

    checkCudaErrors(cusparseStatus);
//.........这里部分代码省略.........

extern "C" magma_int_t
magma_d_spmv(
    double alpha,
    magma_d_matrix A,
    magma_d_matrix x,
    double beta,
    magma_d_matrix y,
    magma_queue_t queue )
{
    magma_int_t info = 0;

    magma_d_matrix x2={Magma_CSR};

    cusparseHandle_t cusparseHandle = 0;
    cusparseMatDescr_t descr = 0;
    // make sure RHS is a dense matrix
    if ( x.storage_type != Magma_DENSE ) {
         printf("error: only dense vectors are supported for SpMV.\n");
         info = MAGMA_ERR_NOT_SUPPORTED;
         goto cleanup;
    }

    if ( A.memory_location != x.memory_location ||
                            x.memory_location != y.memory_location ) {
        printf("error: linear algebra objects are not located in same memory!\n");
        printf("memory locations are: %d   %d   %d\n",
                        A.memory_location, x.memory_location, y.memory_location );
        info = MAGMA_ERR_INVALID_PTR;
        goto cleanup;
    }

    // DEV case
    if ( A.memory_location == Magma_DEV ) {
        if ( A.num_cols == x.num_rows && x.num_cols == 1 ) {
             if ( A.storage_type == Magma_CSR || A.storage_type == Magma_CUCSR
                            || A.storage_type == Magma_CSRL
                            || A.storage_type == Magma_CSRU ) {
              CHECK_CUSPARSE( cusparseCreate( &cusparseHandle ));
              CHECK_CUSPARSE( cusparseSetStream( cusparseHandle, queue->cuda_stream() ));
              CHECK_CUSPARSE( cusparseCreateMatDescr( &descr ));
            
              CHECK_CUSPARSE( cusparseSetMatType( descr, CUSPARSE_MATRIX_TYPE_GENERAL ));
              CHECK_CUSPARSE( cusparseSetMatIndexBase( descr, CUSPARSE_INDEX_BASE_ZERO ));
            
              cusparseDcsrmv( cusparseHandle,CUSPARSE_OPERATION_NON_TRANSPOSE,
                            A.num_rows, A.num_cols, A.nnz, &alpha, descr,
                            A.dval, A.drow, A.dcol, x.dval, &beta, y.dval );
             }
             else if ( A.storage_type == Magma_ELL ) {
                 //printf("using ELLPACKT kernel for SpMV: ");
                 CHECK( magma_dgeelltmv( MagmaNoTrans, A.num_rows, A.num_cols,
                    A.max_nnz_row, alpha, A.dval, A.dcol, x.dval, beta,
                    y.dval, queue ));
                 //printf("done.\n");
             }
             else if ( A.storage_type == Magma_ELLPACKT ) {
                 //printf("using ELL kernel for SpMV: ");
                 CHECK( magma_dgeellmv( MagmaNoTrans, A.num_rows, A.num_cols,
                    A.max_nnz_row, alpha, A.dval, A.dcol, x.dval, beta,
                    y.dval, queue ));
                 //printf("done.\n");
             }
             else if ( A.storage_type == Magma_ELLRT ) {
                 //printf("using ELLRT kernel for SpMV: ");
                 CHECK( magma_dgeellrtmv( MagmaNoTrans, A.num_rows, A.num_cols,
                            A.max_nnz_row, alpha, A.dval, A.dcol, A.drow, x.dval,
                         beta, y.dval, A.alignment, A.blocksize, queue ));
                 //printf("done.\n");
             }
             else if ( A.storage_type == Magma_SELLP ) {
                 //printf("using SELLP kernel for SpMV: ");
                 CHECK( magma_dgesellpmv( MagmaNoTrans, A.num_rows, A.num_cols,
                    A.blocksize, A.numblocks, A.alignment,
                    alpha, A.dval, A.dcol, A.drow, x.dval, beta, y.dval, queue ));

                 //printf("done.\n");
             }
             else if ( A.storage_type == Magma_DENSE ) {
                 //printf("using DENSE kernel for SpMV: ");
                 magmablas_dgemv( MagmaNoTrans, A.num_rows, A.num_cols, alpha,
                                A.dval, A.num_rows, x.dval, 1, beta,  y.dval,
                                1, queue );
                 //printf("done.\n");
             }
             else if ( A.storage_type == Magma_SPMVFUNCTION ) {
                 //printf("using DENSE kernel for SpMV: ");
                 CHECK( magma_dcustomspmv( alpha, x, beta, y, queue ));
                 //printf("done.\n");
             }
             else if ( A.storage_type == Magma_BCSR ) {
                 //printf("using CUSPARSE BCSR kernel for SpMV: ");
                // CUSPARSE context //
                cusparseDirection_t dirA = CUSPARSE_DIRECTION_ROW;
                int mb = magma_ceildiv( A.num_rows, A.blocksize );
                int nb = magma_ceildiv( A.num_cols, A.blocksize );
                CHECK_CUSPARSE( cusparseCreate( &cusparseHandle ));
                CHECK_CUSPARSE( cusparseSetStream( cusparseHandle, queue->cuda_stream() ));
                CHECK_CUSPARSE( cusparseCreateMatDescr( &descr ));
                cusparseDbsrmv( cusparseHandle, dirA,
                    CUSPARSE_OPERATION_NON_TRANSPOSE, mb, nb, A.numblocks,
//.........这里部分代码省略.........