device_spmv.cuh

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 * Copyright (c) 2011, Duane Merrill.  All rights reserved.
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#pragma once

#include <stdio.h>
#include <iterator>
#include <limits>

#include "dispatch/dispatch_spmv_orig.cuh"
#include "../util_namespace.cuh"

CUB_NS_PREFIX

namespace cub {


struct DeviceSpmv
{
    /******************************************************************/

    template <
        typename            ValueT>
    CUB_RUNTIME_FUNCTION
    static cudaError_t CsrMV(
        void*               d_temp_storage,                     
        size_t&             temp_storage_bytes,                 
        ValueT*             d_values,                           
        int*                d_row_offsets,                      
        int*                d_column_indices,                   
        ValueT*             d_vector_x,                         
        ValueT*             d_vector_y,                         
        int                 num_rows,                           
        int                 num_cols,                           
        int                 num_nonzeros,                       
        cudaStream_t        stream                  = 0,        
        bool                debug_synchronous       = false)    
    {
        SpmvParams<ValueT, int> spmv_params;
        spmv_params.d_values             = d_values;
        spmv_params.d_row_end_offsets    = d_row_offsets + 1;
        spmv_params.d_column_indices     = d_column_indices;
        spmv_params.d_vector_x           = d_vector_x;
        spmv_params.d_vector_y           = d_vector_y;
        spmv_params.num_rows             = num_rows;
        spmv_params.num_cols             = num_cols;
        spmv_params.num_nonzeros         = num_nonzeros;
        spmv_params.alpha                = 1.0;
        spmv_params.beta                 = 0.0;

        return DispatchSpmv<ValueT, int>::Dispatch(
            d_temp_storage,
            temp_storage_bytes,
            spmv_params,
            stream,
            debug_synchronous);
    }

};



}               // CUB namespace
CUB_NS_POSTFIX  // Optional outer namespace(s)