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#pragma once
#include <cusp/coo_matrix.h>
#include <cusp/csr_matrix.h>
#include <cusp/dia_matrix.h>
#include <cusp/ell_matrix.h>
#include <cusp/hyb_matrix.h>
template <typename IndexType, typename ValueType>
size_t bytes_per_spmv(const cusp::dia_matrix<IndexType,ValueType,cusp::host_memory>& mtx)
{
// note: this neglects diag_offsets, which is < 1% of other parts
size_t bytes = 0;
bytes += 2*sizeof(ValueType) * mtx.num_entries; // A[i,j] and x[j]
bytes += 2*sizeof(ValueType) * mtx.num_rows; // y[i] = y[i] + ...
return bytes;
}
template <typename IndexType, typename ValueType>
size_t bytes_per_spmv(const cusp::ell_matrix<IndexType,ValueType,cusp::host_memory>& mtx)
{
size_t bytes = 0;
bytes += 1*sizeof(ValueType) * mtx.num_rows * mtx.values.num_cols; // A[i,j] and padding
bytes += 1*sizeof(IndexType) * mtx.num_entries; // column index
bytes += 1*sizeof(ValueType) * mtx.num_entries; // x[j]
bytes += 2*sizeof(ValueType) * mtx.num_rows; // y[i] = y[i] + ...
return bytes;
}
template <typename IndexType, typename ValueType>
size_t bytes_per_spmv(const cusp::csr_matrix<IndexType,ValueType,cusp::host_memory>& mtx)
{
size_t bytes = 0;
bytes += 2*sizeof(IndexType) * mtx.num_rows; // row pointer
bytes += 1*sizeof(IndexType) * mtx.num_entries; // column index
bytes += 2*sizeof(ValueType) * mtx.num_entries; // A[i,j] and x[j]
bytes += 2*sizeof(ValueType) * mtx.num_rows; // y[i] = y[i] + ...
return bytes;
}
template <typename IndexType, typename ValueType>
size_t bytes_per_spmv(const cusp::coo_matrix<IndexType,ValueType,cusp::host_memory>& mtx)
{
size_t bytes = 0;
bytes += 2*sizeof(IndexType) * mtx.num_entries; // row and column indices
bytes += 2*sizeof(ValueType) * mtx.num_entries; // A[i,j] and x[j]
std::vector<size_t> occupied_rows(mtx.num_rows, 0);
for(size_t n = 0; n < mtx.num_entries; n++)
occupied_rows[mtx.row_indices[n]] = 1;
for(size_t n = 0; n < mtx.num_rows; n++)
if(occupied_rows[n] == 1)
bytes += 2*sizeof(ValueType); // y[i] = y[i] + ...
return bytes;
}
template <typename IndexType, typename ValueType>
size_t bytes_per_spmv(const cusp::hyb_matrix<IndexType,ValueType,cusp::host_memory>& mtx)
{
return bytes_per_spmv(mtx.ell) + bytes_per_spmv(mtx.coo);
}
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