C user functions for performance tuning.
Several functions are present in the file, each specific to different performance tuning parameters.
64);
(false,
false,
void cs_renumber_set_n_threads(int n_threads)
Set the target number of threads for mesh renumbering.
Definition: cs_renumber.cpp:5713
void cs_renumber_set_algorithm(bool halo_adjacent_cells_last, bool halo_adjacent_faces_last, cs_renumber_ordering_t i_faces_base_ordering, cs_renumber_cells_type_t cells_pre_numbering, cs_renumber_cells_type_t cells_numbering, cs_renumber_i_faces_type_t i_faces_numbering, cs_renumber_b_faces_type_t b_faces_numbering, cs_renumber_vertices_type_t vertices_numbering)
Select the algorithm for mesh renumbering.
Definition: cs_renumber.cpp:5803
void cs_renumber_set_min_subset_size(cs_lnum_t min_i_subset_size, cs_lnum_t min_b_subset_size)
Set the minimum sunset sizes when renumbering for threads.
Definition: cs_renumber.cpp:5754
@ CS_RENUMBER_I_FACES_MULTIPASS
Definition: cs_renumber.h:67
@ CS_RENUMBER_ADJACENT_LOW
Definition: cs_renumber.h:93
@ CS_RENUMBER_CELLS_NONE
Definition: cs_renumber.h:60
@ CS_RENUMBER_VERTICES_NONE
Definition: cs_renumber.h:85
@ CS_RENUMBER_B_FACES_THREAD
Definition: cs_renumber.h:75
{
1,
false);
1,
false);
}
void cs_partition_set_algorithm(cs_partition_stage_t stage, cs_partition_algorithm_t algorithm, int rank_step, bool ignore_perio)
Set algorithm for domain partitioning.
Definition: cs_partition.cpp:2914
@ CS_PARTITION_SCOTCH
Definition: cs_partition.h:113
@ CS_PARTITION_SFC_HILBERT_BOX
Definition: cs_partition.h:111
@ CS_PARTITION_FOR_PREPROCESS
Definition: cs_partition.h:86
@ CS_PARTITION_MAIN
Definition: cs_partition.h:87
{
int n_extra_partitions = 3;
int extra_partitions_list[] = {12, 24, 48};
}
void cs_partition_add_partitions(int n_extra_partitions, int extra_partitions_list[])
Define list of extra partitionings to build.
Definition: cs_partition.cpp:3086
#if defined(HAVE_MPI_IO) && MPI_VERSION > 1
int block_rank_step = 8;
int block_min_size = 1024*1024*8;
MPI_Info_create(&hints);
MPI_Info_set(hints, "striping_factor", "8");
MPI_Info_set(hints, "striping_unit", "8388608");
MPI_Info_set(hints, "romio_cb_read", "automatic");
MPI_Info_set(hints, "romio_cb_write", "automatic");
MPI_Info_set(hints, "romio_ds_read", "automatic");
MPI_Info_set(hints, "romio_ds_write", "automatic");
MPI_Info_set(hints, "collective_buffering", "true");
MPI_Info_set(hints, "access_style", "read_once");
MPI_Info_free(&hints);
#endif
MPI_Comm cs_glob_mpi_comm
Definition: cs_defs.cpp:183
#define MPI_INFO_NULL
Definition: cs_defs.h:95
#define MPI_Info
Definition: cs_defs.h:94
void cs_file_set_default_comm(int block_rank_step, MPI_Comm comm)
Set default MPI communicator values for file access.
Definition: cs_file.cpp:4095
void cs_file_set_mpi_io_positioning(cs_file_mpi_positioning_t positioning)
Set the positioning method for MPI-IO.
Definition: cs_file.cpp:4239
void cs_file_set_default_access(cs_file_mode_t mode, cs_file_access_t method, MPI_Info hints)
Set the default options for file access.
Definition: cs_file.cpp:3954
cs_file_access_t
Definition: cs_file.h:84
@ CS_FILE_MPI_COLLECTIVE
Definition: cs_file.h:91
@ CS_FILE_MODE_WRITE
Definition: cs_file.h:67
@ CS_FILE_MODE_READ
Definition: cs_file.h:66
@ CS_FILE_MPI_INDIVIDUAL_POINTERS
Definition: cs_file.h:101
void cs_parall_set_min_coll_buf_size(size_t buffer_size)
Define minimum recommended scatter or gather buffer size.
Definition: cs_parall.cpp:1353
void cs_grid_set_matrix_tuning(cs_matrix_fill_type_t fill_type, int max_level)
Set matrix tuning behavior for multigrid coarse meshes.
Definition: cs_grid.cpp:8841
@ CS_MATRIX_BLOCK_D
Definition: cs_matrix.h:76
@ CS_MATRIX_SCALAR_SYM
Definition: cs_matrix.h:75
@ CS_MATRIX_MSR
Definition: cs_matrix.h:58
void cs_matrix_default_set_type(cs_matrix_fill_type_t fill_type, cs_matrix_type_t type)
Set default matrix type for a given fill type.
Definition: cs_matrix_default.cpp:850
void cs_matrix_set_tuning_runs(int n_min_products)
Definition: cs_matrix_default.cpp:816