Sparse Solver Routines

The following tables list routines from SPSOLVE and SuperLU sparse solvers in the Oracle Developer Studio Performance Library. (P) denotes routines that are parallelized.

Table 60  SPSOLVE Routines

Routines Function xGSSFS (P) One call interface to SPSOLVE. xGSSIN SPSOLVE initialization. xGSSOR Fill reducing ordering and symbolic factorization. xGSSFA (P) Matrix value input and numeric factorization. xGSSSL Triangular solve. xGSSUO Sets user-specified ordering permutation. xGSSRP Returns permutation used by solver. xGSSCO Returns condition number estimate of coefficient matrix. xGSSDA Deallocate SPSOLVE memory. xGSSPS Prints solver statistics.

Table 61  SuperLU Routines

Routine Function xgstrf Computes factorization xgssvx Factorizes and solves (expert driver) xgssv Factorizes and solves (simple driver) xgstrs Computes triangular solve xgsrfs Improves computed solution; provides error bounds xlangs Computes one-norm, Frobenius-norm, or infinity-norm xgsequ Computes row and column scalings xgscon Estimates reciprocal of condition number xlaqgs Equilibrates a general sparse matrix LUSolveTime Returns time spent in solve stage LUFactTime Returns time spent in factorization stage LUFactFlops Returns number of floating point operations in factorization stage LUSolveFlops Returns number of floating point operations in solve stage xQuerySpace Returns information on the memory statistics sp_ienv Returns specified machine dependent parameter xPrintPerf Prints statistics collected by the computational routines set_default_options Sets parameters that control solver behavior to default options StatInit Allocates and initializes structure that stores performance statistics StatFree Frees structure that stores performance statistics Destroy_Dense_Matrix Deallocates a SuperMatrix in dense format Destroy_SuperNode_Matrix Deallocates a SuperMatrix in supernodal format Destroy_CompCol_Matrix Deallocates a SuperMatrix in compressed sparse column format Destroy_CompCol_Permuted Deallocates a SuperMatrix in permuted compressed sparse column format Destroy_SuperMatrix_Store Deallocates actual storage that stores matrix in a SuperMatrix xCopy_CompCol_Matrix Copies a SuperMatrix in compressed sparse column format xCreate_CompCol_Matrix Allocates a SuperMatrix in compressed sparse column format xCreate_Dense_Matrix Allocates a SuperMatrix in dense format xCreate_CompRow_Matrix Allocates a SuperMatrix in compressed sparse row format xCreate_SuperNode_Matrix Allocates a SuperMatrix in supernodal format sp_preorder Permutes columns of original sparse matrix sp_sgemm sp_dgemm sp_cgemm sp_zgemm Multiplies a SuperMatrix by a dense matrix