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Update profile output for non-zero center points #100

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Update profile output for non-zero center points #100

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3426504
Ensure profile output works if points are not at exactly zero
streeve May 29, 2024
9aa62dd
fixup: use global bounds for profile output
streeve May 29, 2024
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36 changes: 29 additions & 7 deletions src/CabanaPD_DisplacementProfile.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -42,30 +42,52 @@ void createOutputProfile( MPI_Comm comm, const int num_cell,
Kokkos::View<int*, memory_space> count( "c", 1 );

auto dims = getDim( profile_dim );
double dx1 = particles.dx[dims[0]];
double dx2 = particles.dx[dims[1]];
double dx1 = particles.dx[dims[0]] / 2.0;
double dx2 = particles.dx[dims[1]] / 2.0;
double center1 = particles.local_mesh_lo[dims[0]] +
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particles.global_mesh_ext[dims[0]] / 2.0;
double center2 = particles.local_mesh_lo[dims[1]] +
particles.global_mesh_ext[dims[1]] / 2.0;

auto x = particles.sliceReferencePosition();
auto u = particles.sliceDisplacement();
// Find points closest to the center line.
double center_min1;
double center_min2;
auto find_profile =
KOKKOS_LAMBDA( const int pid, double& min1, double& min2 )
{
if ( Kokkos::abs( x( pid, dims[0] ) - center1 ) < min1 )
min1 = x( pid, dims[0] );
if ( Kokkos::abs( x( pid, dims[1] ) - center2 ) < min2 )
min2 = x( pid, dims[1] );
};
Kokkos::RangePolicy<typename memory_space::execution_space> policy(
0, x.size() );
Kokkos::parallel_reduce( "displacement_profile", policy, find_profile,
Kokkos::Min<double>( center_min1 ),
Kokkos::Min<double>( center_min2 ) );

// Extract points along that line.
auto measure_profile = KOKKOS_LAMBDA( const int pid )
{
if ( x( pid, dims[0] ) < dx1 / 2.0 && x( pid, dims[0] ) > -dx1 / 2.0 &&
x( pid, dims[1] ) < dx2 / 2.0 && x( pid, dims[1] ) > -dx2 / 2.0 )
if ( x( pid, dims[0] ) - center_min1 < dx1 &&
x( pid, dims[0] ) - center_min1 > -dx1 &&
x( pid, dims[1] ) - center_min2 < dx2 &&
x( pid, dims[1] ) - center_min2 > -dx2 )
{
auto c = Kokkos::atomic_fetch_add( &count( 0 ), 1 );
profile( c, 0 ) = x( pid, profile_dim );
profile( c, 1 ) = user( pid );
}
};
Kokkos::RangePolicy<typename memory_space::execution_space> policy(
0, x.size() );
Kokkos::parallel_for( "displacement_profile", policy, measure_profile );
auto count_host =
Kokkos::create_mirror_view_and_copy( Kokkos::HostSpace{}, count );
auto profile_host =
Kokkos::create_mirror_view_and_copy( Kokkos::HostSpace{}, profile );
std::fstream fout;

std::fstream fout;
fout.open( file_name, std::ios::app );
for ( int p = 0; p < count_host( 0 ); p++ )
{
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