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copy residual to host #1522

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merged 1 commit into from
Jan 16, 2024
Merged

copy residual to host #1522

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5 changes: 3 additions & 2 deletions examples/distributed-solver/distributed-solver.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -219,15 +219,16 @@ int main(int argc, char* argv[])
ValueType t_end = gko::experimental::mpi::get_walltime();

// Get the residual.
auto res_norm = gko::as<vec>(logger->get_residual_norm());
auto res_norm = gko::clone(exec->get_master(),
gko::as<vec>(logger->get_residual_norm()));

// @sect3{Printing Results}
// Print the achieved residual norm and timings on rank 0.
if (comm.rank() == 0) {
// clang-format off
std::cout << "\nNum rows in matrix: " << num_rows
<< "\nNum ranks: " << comm.size()
<< "\nFinal Res norm: " << *res_norm->get_const_values()
<< "\nFinal Res norm: " << res_norm->at(0, 0)
<< "\nIteration count: " << logger->get_num_iterations()
<< "\nInit time: " << t_init_end - t_init
<< "\nRead time: " << t_read_setup_end - t_init
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