device_spmv.hpp

/******************************************************************************
 * Copyright (c) 2010-2011, Duane Merrill.  All rights reserved.
 * Copyright (c) 2011-2018, NVIDIA CORPORATION.  All rights reserved.
 * Modifications Copyright (c) 2017-2023, Advanced Micro Devices, Inc.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the NVIDIA CORPORATION nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL NVIDIA CORPORATION BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 ******************************************************************************/

#ifndef HIPCUB_CUB_DEVICE_DEVICE_SPMV_HPP_
#define HIPCUB_CUB_DEVICE_DEVICE_SPMV_HPP_

#include "../../../config.hpp"

#include <cub/device/device_spmv.cuh>
#include <cub/iterator/tex_ref_input_iterator.cuh>

BEGIN_HIPCUB_NAMESPACE

class DeviceSpmv
{

public:

template <
    typename        ValueT,              
    typename        OffsetT>             
struct SpmvParams
{
    ValueT*         d_values;            
    OffsetT*        d_row_end_offsets;   
    OffsetT*        d_column_indices;    
    ValueT*         d_vector_x;          
    ValueT*         d_vector_y;          
    int             num_rows;            
    int             num_cols;            
    int             num_nonzeros;        
    ValueT          alpha;               
    ValueT          beta;                

    ::cub::TexRefInputIterator<ValueT, 66778899, OffsetT>  t_vector_x;
};

template <typename ValueT>
    HIPCUB_RUNTIME_FUNCTION
    static hipError_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,                       
        hipStream_t         stream                  = 0,        
        bool                debug_synchronous       = false)    
    {
        ::cub::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;

        (void)debug_synchronous;

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

END_HIPCUB_NAMESPACE

#endif // HIPCUB_CUB_DEVICE_DEVICE_SELECT_HPP_