1 /* $Id: mpidense.h,v 1.17 2000/10/24 20:25:30 bsmith Exp balay $ */ 2 3 #include "src/mat/impls/dense/seq/dense.h" 4 5 /* Data stuctures for basic parallel dense matrix */ 6 7 /* Structure to hold the information for factorization of a dense matrix */ 8 /* Most of this info is used in the pipe send/recv routines */ 9 typedef struct { 10 int nlnr; /* number of local rows downstream */ 11 int nrend; /* rend for downstream processor */ 12 int nbr,pnbr; /* Down and upstream neighbors */ 13 int *tag; /* message tags */ 14 int currow; /* current row number */ 15 int phase; /* phase (used to indicate tag) */ 16 int up; /* Are we moving up or down in row number? */ 17 int use_bcast; /* Are we broadcasting max length? */ 18 int nsend; /* number of sends */ 19 int nrecv; /* number of receives */ 20 21 /* data initially in matrix context */ 22 int k; /* Blocking factor (unused as yet) */ 23 int k2; /* Blocking factor for solves */ 24 PetscScalar *temp; 25 int nlptr; 26 int *lrows; 27 int *nlrows; 28 int *pivots; 29 } FactorCtx; 30 31 #define PIPEPHASE (ctx->phase == 0) 32 33 typedef struct { 34 int *rowners,*cowners; /* ranges owned by each processor */ 35 /* note n == N */ 36 int nvec; /* this is the n size for the vector one multiplies with */ 37 int rstart,rend; /* starting and ending owned rows */ 38 Mat A; /* local submatrix */ 39 int size; /* size of communicator */ 40 int rank; /* rank of proc in communicator */ 41 /* The following variables are used for matrix assembly */ 42 PetscTruth donotstash; /* Flag indicationg if values should be stashed */ 43 MPI_Request *send_waits; /* array of send requests */ 44 MPI_Request *recv_waits; /* array of receive requests */ 45 int nsends,nrecvs; /* numbers of sends and receives */ 46 PetscScalar *svalues,*rvalues; /* sending and receiving data */ 47 int rmax; /* maximum message length */ 48 49 /* The following variables are used for matrix-vector products */ 50 51 Vec lvec; /* local vector */ 52 VecScatter Mvctx; /* scatter context for vector */ 53 54 PetscTruth roworiented; /* if true, row oriented input (default) */ 55 FactorCtx *factor; /* factorization context */ 56 } Mat_MPIDense; 57