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Improve sssp_cpu performance #72

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May 12, 2021
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Improve sssp_cpu performance #72

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Improve sssp_cpu performance
bkj May 12, 2021
52a288d
Typo
bkj May 12, 2021
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13 changes: 9 additions & 4 deletions examples/sssp/sssp_cpu.hxx
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Original file line number Diff line number Diff line change
Expand Up @@ -22,9 +22,14 @@ float run(csr_t& csr,
vertex_t& single_source,
weight_t* distances,
vertex_t* predecessors) {
thrust::host_vector<edge_t> row_offsets(csr.row_offsets); // Copy data to CPU
thrust::host_vector<vertex_t> column_indices(csr.column_indices);
thrust::host_vector<weight_t> nonzero_values(csr.nonzero_values);

thrust::host_vector<edge_t> _row_offsets(csr.row_offsets); // Copy data to CPU
thrust::host_vector<vertex_t> _column_indices(csr.column_indices);
thrust::host_vector<weight_t> _nonzero_values(csr.nonzero_values);

edge_t* row_offsets = _row_offsets.data();
vertex_t* column_indices = _column_indices.data();
weight_t* nonzero_values = _nonzero_values.data();

for (vertex_t i = 0; i < csr.number_of_rows; i++)
distances[i] = std::numeric_limits<weight_t>::max();
Expand Down Expand Up @@ -78,4 +83,4 @@ int compute_error(thrust::device_vector<val_t> _gpu_result,
return n_errors;
}

} // namespace sssp_cpu
} // namespace sssp_cpu