I am using the SparseHalo object in Cabana. I have been exploring the sparse halo test (grid/unit_test/tstSparseHalo.hpp) to understand how it works.
I noticed that the test only tests a halo using a sparse local grid with four cells per tile. I tested the different parameter values and the test either failed or seg faulted:
constexpr int size_tile_per_dim = 32;
constexpr int cell_per_tile_dim = 8;
constexpr int cell_bits_per_tile_dim = decltype(sparse_map)::cell_bits_per_tile_dim;
int halo_width = 8;
int halo_tile_width = 1;
constexpr int size_tile_per_dim = 16;
constexpr int cell_per_tile_dim = 2;
constexpr int cell_bits_per_tile_dim = decltype(sparse_map)::cell_bits_per_tile_dim;
int halo_width = 4;
int halo_tile_width = 2;
Am I not understanding the sparse halo correctly, or is there a bug in the SparseHalo?
Update: If the cell_per_tile_dim is 4, the data value (EXPECT_DOUBLE_EQ) checks are failing. When cell_per_tile_dim is 2, a runtime error is thrown because tiles are not found.
I am using the
SparseHaloobject in Cabana. I have been exploring the sparse halo test (grid/unit_test/tstSparseHalo.hpp) to understand how it works.I noticed that the test only tests a halo using a sparse local grid with four cells per tile. I tested the different parameter values and the test either failed or seg faulted:
Am I not understanding the sparse halo correctly, or is there a bug in the SparseHalo?
Update: If the
cell_per_tile_dimis 4, the data value (EXPECT_DOUBLE_EQ) checks are failing. Whencell_per_tile_dimis 2, a runtime error is thrown because tiles are not found.