mic_matrix_ell_kernel.cpp

// **************************************************************************
//
//    PARALUTION   www.paralution.com
//
//    Copyright (C) 2015  PARALUTION Labs UG (haftungsbeschränkt) & Co. KG
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//
//    This program is free software: you can redistribute it and/or modify
//    it under the terms of the GNU General Public License as published by
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//
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//    but WITHOUT ANY WARRANTY; without even the implied warranty of
//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//    GNU General Public License for more details.
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// PARALUTION version 1.1.0 


#include "../../utils/def.hpp"
#include "mic_matrix_ell_kernel.hpp"
#include "mic_utils.hpp"
#include "../matrix_formats_ind.hpp"

namespace paralution {

template <typename ValueType>
void spmv_ell(const int mic_dev, 
	      const int *col, const ValueType *val,
	      const int nrow,
	      const int ncol,
	      const int max_row,
	      const ValueType *in, ValueType *out) {
  

#pragma offload target(mic:mic_dev)			    \
  in(col:length(0) MIC_REUSE MIC_RETAIN)	    \
  in(val:length(0) MIC_REUSE MIC_RETAIN)	    \
  in(in:length(0) MIC_REUSE MIC_RETAIN)		    \
  in(out:length(0) MIC_REUSE MIC_RETAIN)	    
#pragma omp parallel for
    for (int ai=0; ai<nrow; ++ai) {
      out[ai] = ValueType(0.0);

      for (int n=0; n<max_row; ++n) {

        int aj = ELL_IND(ai, n, nrow, max_row);

        if ((col[aj] >= 0) && (col[aj] < ncol)) {
          out[ai] += val[aj] * in[ col[aj] ];
        } else {
          break;
	}
      }
    }

}

template <typename ValueType>
void spmv_add_ell(const int mic_dev, 
		  const int *col, const ValueType *val,
		  const int nrow,
		  const int ncol,
		  const int max_row,
		  const ValueType scalar,
		  const ValueType *in, ValueType *out) {
  

#pragma offload target(mic:mic_dev)			    \
  in(col:length(0) MIC_REUSE MIC_RETAIN)	    \
  in(val:length(0) MIC_REUSE MIC_RETAIN)	    \
  in(in:length(0) MIC_REUSE MIC_RETAIN)		    \
  in(out:length(0) MIC_REUSE MIC_RETAIN)	    
#pragma omp parallel for
    for (int ai=0; ai<nrow; ++ai) {

      for (int n=0; n<max_row; ++n) {

        int aj = ELL_IND(ai, n, nrow, max_row);

        if ((col[aj] >= 0) && (col[aj] < ncol)) {
          out[ai] += scalar*val[aj] * in[ col[aj] ];
        } else {
          break;
	}
      }
    }

}

template void spmv_ell<double>(const int mic_dev, 
			  const int *col, const double *val,
			  const int nrow,
			  const int ncol,
			  const int max_row,
			  const double *in, double *out);

template void spmv_ell<float>(const int mic_dev, 
			 const int *col, const float *val,
			 const int nrow,
			 const int ncol,
			 const int max_row,
			 const float *in, float *out);

template void spmv_ell<int>(const int mic_dev, 
		       const int *col, const int *val,
		       const int nrow,
		       const int ncol,
		       const int max_row,
		       const int *in, int *out);

template void spmv_add_ell<double>(const int mic_dev, 
			      const int *col, const double *val,
			      const int nrow,
			      const int ncol,
			      const int max_row,
			      const double scalar,
			      const double *in, double *out);

template void spmv_add_ell<float>(const int mic_dev, 
			     const int *col, const float *val,
			     const int nrow,
			     const int ncol,
			     const int max_row,
			     const float scalar,
			     const float *in, float *out);

template void spmv_add_ell<int>(const int mic_dev, 
			   const int *col, const int *val,
			   const int nrow,
			   const int ncol,
			   const int max_row,
			   const int scalar,
			   const int *in, int *out);

}