Factorization step

This group describes all the routines of the internal block CSC and the solver matrix structure before applying the numerical factorization step. More...

Modules
	Sparse matrix blocked CSC structure
	Describe all the internals routines to manipulate the internal block csc.
	Solver matrix coefficient structure
	Factorization kernels
	PaRSEC support for the numerical factorization
	StarPU support for the numerical factorization

Functions
int	pastix_subtask_spm2bcsc (pastix_data_t *pastix_data, spmatrix_t *spm)
	Fill the internal block CSC structure. More...
int	pastix_subtask_bcsc2ctab (pastix_data_t *pastix_data)
	Fill the internal solver matrix structure. More...
int	pastix_subtask_sopalin (pastix_data_t *pastix_data)
	Factorize the given problem using Cholesky or LU decomposition. More...

Detailed Description

This group describes all the routines of the internal block CSC and the solver matrix structure before applying the numerical factorization step.

Function Documentation

pastix_subtask_spm2bcsc()

int pastix_subtask_spm2bcsc	(	pastix_data_t *	pastix_data,
		spmatrix_t *	spm
	)

Fill the internal block CSC structure.

This internal block CSC can be used by the refinement step with or without the preconditioner obtained by the numerical factorization.

This routine is affected by the following parameters: IPARM_VERBOSE.

Parameters

[in,out]	pastix_data	The pastix_data structure that describes the solver instance. On exit, the internal block CSC is filled with entries from the spm matrix.
[in,out]	spm	The sparse matrix descriptor that describes problem instance. On exit, if IPARM_FREE_CSCUSER is set, the spm is freed.

Return values

PASTIX_SUCCESS	on successful exit,
PASTIX_ERR_BADPARAMETER	if one parameter is incorrect,
PASTIX_ERR_OUTOFMEMORY	if one allocation failed.

Definition at line 93 of file pastix_task_sopalin.c.

References pastix_data_s::bcsc, bcscExit(), bcscInit(), pastix_data_s::dparm, DPARM_A_NORM, pastix_data_s::inter_node_procnum, pastix_data_s::iparm, IPARM_FACTORIZATION, IPARM_FREE_CSCUSER, IPARM_SCHEDULER, IPARM_VERBOSE, pastix_data_s::ordemesh, PASTIX_ERR_BADPARAMETER, pastix_int_t, PASTIX_SUCCESS, PastixFactLDLH, PastixFactLDLT, PastixFactLU, PastixSchedDynamic, PastixSchedParsec, PastixVerboseNo, PastixVerboseNot, pastix_data_s::sched, pastix_data_s::solvglob, pastix_data_s::solvloc, pastix_data_s::solvmatr, and pastix_data_s::steps.

Referenced by pastix_task_numfact().

pastix_subtask_bcsc2ctab()

int pastix_subtask_bcsc2ctab

(

pastix_data_t *

pastix_data

)

Fill the internal solver matrix structure.

This step is linked with the pastix_subtask_sopalin() since this structure is only used during the numerical factorization.

This routine is affected by the following parameters: IPARM_VERBOSE, [IPARM_FACTORIZATION.

Parameters

[in,out]

pastix_data

The pastix_data structure that describes the solver instance. On exit, the internal solver structure is filled with entries from the internal block CSC matrix.

Return values

PASTIX_SUCCESS	on successful exit,
PASTIX_ERR_BADPARAMETER	if one parameter is incorrect,
PASTIX_ERR_OUTOFMEMORY	if one allocation failed.

Definition at line 213 of file pastix_task_sopalin.c.

References pastix_data_s::bcsc, coeftabExit(), coeftabInit(), pastix_lr_s::compress_method, pastix_lr_s::compress_min_height, pastix_lr_s::compress_min_width, pastix_lr_s::compress_preselect, pastix_lr_s::compress_when, pastix_lr_s::core_ge2lr, core_get_rklimit, core_get_rklimit_begin(), core_get_rklimit_end(), pastix_lr_s::core_rradd, pastix_data_s::dparm, DPARM_COMPRESS_MIN_RATIO, DPARM_COMPRESS_TOLERANCE, solver_matrix_s::factotype, solver_matrix_s::flttype, ge2lrMethods, pastix_lr_s::ilu_lvl, pastix_data_s::inter_node_comm, pastix_data_s::iparm, IPARM_COMPRESS_ILUK, IPARM_COMPRESS_METHOD, IPARM_COMPRESS_MIN_HEIGHT, IPARM_COMPRESS_MIN_WIDTH, IPARM_COMPRESS_ORTHO, IPARM_COMPRESS_PRESELECT, IPARM_COMPRESS_RELTOL, IPARM_COMPRESS_WHEN, IPARM_FACTORIZATION, IPARM_MIXED, IPARM_SCHEDULER, solver_matrix_s::lowrank, pastix_data_s::parsec, parsec_sparse_matrix_init(), PASTIX_ERR_BADPARAMETER, pastix_lr_minratio, pastix_lr_ortho, pastix_parsec_init(), PastixCompressNever, PastixCompressWhenBegin, PastixCompressWhenDuring, PastixCompressWhenEnd, PastixFactLDLH, PastixFactLDLT, PastixFactLLH, PastixFactLLT, PastixFactLU, PastixGeneral, PastixHermitian, PastixLCoef, PastixLUCoef, PastixSchedParsec, PastixSymmetric, pastix_data_s::procnbr, rraddMethods, pastix_data_s::solvmatr, pastix_data_s::steps, pastix_lr_s::tolerance, and pastix_lr_s::use_reltol.

Referenced by pastix_task_numfact().

pastix_subtask_sopalin()

int pastix_subtask_sopalin

(

pastix_data_t *

pastix_data

)

Factorize the given problem using Cholesky or LU decomposition.

The user can call the pastix_task_solve() to obtain the solution.

This routine is affected by the following parameters: IPARM_VERBOSE, IPARM_FACTORIZATION, IPARM_COMPRESS_WHEN.

Parameters

[in,out]

pastix_data

The pastix_data structure that describes the solver instance. On exit, the solver matrix structure stores the factorization of the given problem.

Return values

PASTIX_SUCCESS	on successful exit,
PASTIX_ERR_BADPARAMETER	if one parameter is incorrect,
PASTIX_ERR_OUTOFMEMORY	if one allocation failed.

Definition at line 412 of file pastix_task_sopalin.c.

References pastix_data_s::bcsc, coeftabMemory, pastix_data_s::cpu_models, pastix_data_s::dir_local, pastix_data_s::dparm, DPARM_A_NORM, DPARM_EPSILON_MAGN_CTRL, DPARM_FACT_ENERGY, DPARM_FACT_FLOPS, DPARM_FACT_RLFLOPS, DPARM_FACT_THFLOPS, DPARM_FACT_TIME, DPARM_MEM_FR, DPARM_MEM_LR, solver_matrix_s::flttype, pastix_data_s::gpu_models, pastix_data_s::inter_node_comm, pastix_data_s::inter_node_procnum, pastix_data_s::iparm, IPARM_FACTORIZATION, IPARM_STATIC_PIVOTING, IPARM_TRACE, IPARM_VERBOSE, kernelsTraceStart(), kernelsTraceStop(), PASTIX_ERR_BADPARAMETER, pastix_fopenw(), pastix_gendirectories(), pastix_int_t, PastixTraceNumfact, PastixVerboseNot, solver_matrix_s::restore, solverBackupExit(), solverBackupInit(), solverBackupRestore(), solverDraw(), pastix_data_s::solvmatr, and pastix_data_s::steps.

Referenced by pastix_task_numfact().