BSpar_solve(3) BlockSolve95 BSpar_solve(3) NAME BSpar_solve - General solver of a system of equations preconditioned by one of several preconditioners and using one of several possible methods. The rhs can be a block of vectors. INPUT PARAMETERS A - a sparse matrix fact_A - the incomplete factored version of A, if any comm_A - the communication structure for A rhs - the contiguous block of vectors forming the rhs residual - the final computed residual OUTPUT PARAMETERS x - the contiguous block of vectors containing the solution (can con- tain an initial guess if BSctx_set_guess() is set. NOW SPECIFIED IN PROCINFO CONTEXT pre_option - the preconditioner to use: PRE_ICC: incomplete Cholesky factorization PRE_ILU: incomplete LU factorization PRE_SSOR: Successive over relaxation PRE_BJACOBI: Block Jacobi err_tol - the tolerance to which to solve the problem stop if the estimated norm of the residual divided by the norm of the rhs is less than err_tol max_iter - the maximum number of iterations to take guess - if TRUE, then initialize out_x to 0, otherwise the program assumes that out_x contains an initial guess procinfo - the usual processor stuff RETURNS The number of iterations or a negative number indicating the number of it- erations prior to finding that the matrix (or preconditioner) is not posi- tive definite. NOTES The preconditioners must be computed prior to calling BSpar_solve. For more information on the preconditioners, see the manual or BSctx_set_pre(). SYNOPSIS int BSpar_solve(BSpar_mat *A, BSpar_mat *fact_A, BScomm *comm_A, FLOAT *rhs, FLOAT *x, FLOAT *residual, BSprocinfo *procinfo) LOCATION BlockSolve95/src/BSpar_solve.c 1/10/1996 BSpar_solve(3)
NAME | INPUT PARAMETERS | OUTPUT PARAMETERS | NOW SPECIFIED IN PROCINFO CONTEXT | RETURNS | NOTES | SYNOPSIS | LOCATION
Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=BSpar_solve&sektion=3&manpath=FreeBSD+Ports+15.1.quarterly>