/* --------------------------------------------------------------------- * * -- PBLAS auxiliary routine (version 2.0) -- * University of Tennessee, Knoxville, Oak Ridge National Laboratory, * and University of California, Berkeley. * April 1, 1998 * * --------------------------------------------------------------------- */ /* * Include files */ #include "../pblas.h" #include "../PBpblas.h" #include "../PBtools.h" #include "../PBblacs.h" #include "../PBblas.h" #ifdef __STDC__ void PB_CpsyrkAC( PBTYP_T * TYPE, char * DIRECA, char * CONJUG, char * UPLO, char * TRANS, int N, int K, char * ALPHA, char * A, int IA, int JA, int * DESCA, char * BETA, char * C, int IC, int JC, int * DESCC ) #else void PB_CpsyrkAC( TYPE, DIRECA, CONJUG, UPLO, TRANS, N, K, ALPHA, A, IA, JA, DESCA, BETA, C, IC, JC, DESCC ) /* * .. Scalar Arguments .. */ char * CONJUG, * DIRECA, * TRANS, * UPLO; int IA, IC, JA, JC, K, N; char * ALPHA, * BETA; PBTYP_T * TYPE; /* * .. Array Arguments .. */ int * DESCA, * DESCC; char * A, * C; #endif { /* * Purpose * ======= * * PB_CpsyrkAC performs one of the following symmetric or Hermitian rank * k operations * * sub( C ) := alpha*sub( A )*sub( A )' + beta*sub( C ), * or * sub( C ) := alpha*sub( A )*conjg( sub( A )' ) + beta*sub( C ), * or * sub( C ) := alpha*sub( A )'*sub( A ) + beta*sub( C ), * or * sub( C ) := alpha*conjg( sub( A )' )*sub( A ) + beta*sub( C ), * * where * * sub( C ) denotes C(IC:IC+N-1,JC:JC+N-1), and, * * sub( A ) denotes A(IA:IA+N-1,JA:JA+K-1) if TRANS = 'N', * A(IA:IA+K-1,JA:JA+N-1) otherwise. * * Alpha and beta are scalars, sub( C ) is an n by n symmetric * or Hermitian submatrix and sub( A ) is an n by k submatrix in the * first case and a k by n submatrix in the second case. * * This is the outer-product algorithm using the logical aggregation * blocking technique. * * Notes * ===== * * A description vector is associated with each 2D block-cyclicly dis- * tributed matrix. This vector stores the information required to * establish the mapping between a matrix entry and its corresponding * process and memory location. * * In the following comments, the character _ should be read as * "of the distributed matrix". Let A be a generic term for any 2D * block cyclicly distributed matrix. Its description vector is DESC_A: * * NOTATION STORED IN EXPLANATION * ---------------- --------------- ------------------------------------ * DTYPE_A (global) DESCA[ DTYPE_ ] The descriptor type. * CTXT_A (global) DESCA[ CTXT_ ] The BLACS context handle, indicating * the NPROW x NPCOL BLACS process grid * A is distributed over. The context * itself is global, but the handle * (the integer value) may vary. * M_A (global) DESCA[ M_ ] The number of rows in the distribu- * ted matrix A, M_A >= 0. * N_A (global) DESCA[ N_ ] The number of columns in the distri- * buted matrix A, N_A >= 0. * IMB_A (global) DESCA[ IMB_ ] The number of rows of the upper left * block of the matrix A, IMB_A > 0. * INB_A (global) DESCA[ INB_ ] The number of columns of the upper * left block of the matrix A, * INB_A > 0. * MB_A (global) DESCA[ MB_ ] The blocking factor used to distri- * bute the last M_A-IMB_A rows of A, * MB_A > 0. * NB_A (global) DESCA[ NB_ ] The blocking factor used to distri- * bute the last N_A-INB_A columns of * A, NB_A > 0. * RSRC_A (global) DESCA[ RSRC_ ] The process row over which the first * row of the matrix A is distributed, * NPROW > RSRC_A >= 0. * CSRC_A (global) DESCA[ CSRC_ ] The process column over which the * first column of A is distributed. * NPCOL > CSRC_A >= 0. * LLD_A (local) DESCA[ LLD_ ] The leading dimension of the local * array storing the local blocks of * the distributed matrix A, * IF( Lc( 1, N_A ) > 0 ) * LLD_A >= MAX( 1, Lr( 1, M_A ) ) * ELSE * LLD_A >= 1. * * Let K be the number of rows of a matrix A starting at the global in- * dex IA,i.e, A( IA:IA+K-1, : ). Lr( IA, K ) denotes the number of rows * that the process of row coordinate MYROW ( 0 <= MYROW < NPROW ) would * receive if these K rows were distributed over NPROW processes. If K * is the number of columns of a matrix A starting at the global index * JA, i.e, A( :, JA:JA+K-1, : ), Lc( JA, K ) denotes the number of co- * lumns that the process MYCOL ( 0 <= MYCOL < NPCOL ) would receive if * these K columns were distributed over NPCOL processes. * * The values of Lr() and Lc() may be determined via a call to the func- * tion PB_Cnumroc: * Lr( IA, K ) = PB_Cnumroc( K, IA, IMB_A, MB_A, MYROW, RSRC_A, NPROW ) * Lc( JA, K ) = PB_Cnumroc( K, JA, INB_A, NB_A, MYCOL, CSRC_A, NPCOL ) * * Arguments * ========= * * TYPE (local input) pointer to a PBTYP_T structure * On entry, TYPE is a pointer to a structure of type PBTYP_T, * that contains type information (See pblas.h). * * DIRECA (global input) pointer to CHAR * On entry, DIRECA specifies the direction in which the rows * or columns of sub( A ) and sub( C ) should be looped over as * follows: * DIRECA = 'F' or 'f' forward or increasing, * DIRECA = 'B' or 'b' backward or decreasing. * * CONJUG (global input) pointer to CHAR * On entry, CONJUG specifies whether sub( C ) is a symmetric or * Hermitian submatrix operand as follows: * CONJUG = 'N' or 'n' sub( C ) is symmetric, * CONJUG = 'Z' or 'z' sub( C ) is Hermitian. * * UPLO (global input) pointer to CHAR * On entry, UPLO specifies whether the local pieces of * the array C containing the upper or lower triangular part * of the submatrix sub( C ) are to be referenced as follows: * UPLO = 'U' or 'u' Only the local pieces corresponding to * the upper triangular part of the * submatrix sub( C ) are referenced, * UPLO = 'L' or 'l' Only the local pieces corresponding to * the lower triangular part of the * submatrix sub( C ) are referenced. * * TRANS (global input) pointer to CHAR * On entry, TRANS specifies the operation to be performed as * follows: * * TRANS = 'N' or 'n' * sub( C ) := alpha*sub( A )*sub( A )' + beta*sub( C ), * or * sub( C ) := alpha*sub( A )*sub( A )' + beta*sub( C ), * or * sub( C ) := alpha*sub( A )*conjg( sub( A )' ) + * beta*sub( C ), * * TRANS = 'T' or 't' * sub( C ) := alpha*sub( A )'*sub( A ) + beta*sub( C ), * or * sub( C ) := alpha*sub( A )'*sub( A ) + beta*sub( C ), * * TRANS = 'C' or 'c' * sub( C ) := alpha*sub( A )'*sub( A ) + beta*sub( C ), * or * sub( C ) := alpha*conjg( sub( A )' )*sub( A ) + * beta*sub( C ). * * N (global input) INTEGER * On entry, N specifies the order of the submatrix sub( C ). * N must be at least zero. * * K (global input) INTEGER * On entry, with TRANS = 'N' or 'n', K specifies the number of * columns of the submatrix sub( A ), and with TRANS = 'T' or * 't' or 'C' or 'c', K specifies the number of rows of the sub- * matrix sub( A ). K must be at least zero. * * ALPHA (global input) pointer to CHAR * On entry, ALPHA specifies the scalar alpha. When ALPHA is * supplied as zero then the local entries of the array A * corresponding to the entries of the submatrix sub( A ) need * not be set on input. * * A (local input) pointer to CHAR * On entry, A is an array of dimension (LLD_A, Ka), where Ka is * at least Lc( 1, JA+K-1 ) when TRANS = 'N' or 'n', and is at * least Lc( 1, JA+N-1 ) otherwise. Before entry, this array * contains the local entries of the matrix A. * Before entry with TRANS = 'N' or 'n', this array contains the * local entries corresponding to the entries of the n by k sub- * matrix sub( A ), otherwise the local entries corresponding to * the entries of the k by n submatrix sub( A ). * * IA (global input) INTEGER * On entry, IA specifies A's global row index, which points to * the beginning of the submatrix sub( A ). * * JA (global input) INTEGER * On entry, JA specifies A's global column index, which points * to the beginning of the submatrix sub( A ). * * DESCA (global and local input) INTEGER array * On entry, DESCA is an integer array of dimension DLEN_. This * is the array descriptor for the matrix A. * * BETA (global input) pointer to CHAR * On entry, BETA specifies the scalar beta. When BETA is * supplied as zero then the local entries of the array C * corresponding to the entries of the submatrix sub( C ) need * not be set on input. * * C (local input/local output) pointer to CHAR * On entry, C is an array of dimension (LLD_C, Kc), where Kc is * at least Lc( 1, JC+N-1 ). Before entry, this array contains * the local entries of the matrix C. * Before entry with UPLO = 'U' or 'u', this array contains * the local entries corresponding to the upper triangular part * of the symmetric or Hermitian submatrix sub( C ), and the * local entries corresponding to the strictly lower triangular * of sub( C ) are not referenced. On exit, the upper triangular * part of sub( C ) is overwritten by the upper triangular part * of the updated submatrix. * Before entry with UPLO = 'L' or 'l', this array contains * the local entries corresponding to the lower triangular part * of the symmetric or Hermitian submatrix sub( C ), and the * local entries corresponding to the strictly upper triangular * of sub( C ) are not referenced. On exit, the lower triangular * part of sub( C ) is overwritten by the lower triangular part * of the updated submatrix. * Note that the imaginary parts of the local entries corres- * ponding to the diagonal elements of sub( C ) need not be * set, they are assumed to be zero, and on exit they are set * to zero. * * IC (global input) INTEGER * On entry, IC specifies C's global row index, which points to * the beginning of the submatrix sub( C ). * * JC (global input) INTEGER * On entry, JC specifies C's global column index, which points * to the beginning of the submatrix sub( C ). * * DESCC (global and local input) INTEGER array * On entry, DESCC is an integer array of dimension DLEN_. This * is the array descriptor for the matrix C. * * -- Written on April 1, 1998 by * Antoine Petitet, University of Tennessee, Knoxville 37996, USA. * * --------------------------------------------------------------------- */ /* * .. Local Scalars .. */ char GatherDir, ScatterDir, * one, top, tran, * zero; int Acol, Acurcol, Acurimb1, Acurinb1, Acurrow, Afr, Aii, Aimb, Aimb1, Ainb, Ainb1, Ajj, Ald, Am, Amb, Amp, Amp0, An, Anb, Anq, Anq0, Arow, Ccsrc, Cimb, Cinb, Cmb, Cnb, Crsrc, WAfr, WCfr, WCsum, conjg, ctxt, fwd, k, kb, kbb, kend, kstart, kstep, ktmp, mycol, myrow, notran, npcol, nprow, size, upper; GEMM_T gemm; GSUM2D_T gsum2d; /* * .. Local Arrays .. */ int Ad0[DLEN_], DBUFA[DLEN_], WAd[DLEN_], WCd[DLEN_]; char * Aptr = NULL, * Aptr0 = NULL, * WA = NULL, * WC = NULL; /* .. * .. Executable Statements .. * */ /* * sub( C ) = beta * sub( C ) */ PB_Cplascal( TYPE, UPLO, CONJUG, N, N, BETA, C, IC, JC, DESCC ); /* * Retrieve process grid information */ Cblacs_gridinfo( ( ctxt = DESCA[CTXT_] ), &nprow, &npcol, &myrow, &mycol ); fwd = ( Mupcase( DIRECA[0] ) == CFORWARD ); conjg = ( Mupcase( CONJUG[0] ) == CCONJG ); upper = ( Mupcase( UPLO [0] ) == CUPPER ); notran = ( Mupcase( TRANS [0] ) == CNOTRAN ); tran = ( conjg ? CCOTRAN : CTRAN ); size = TYPE->size; one = TYPE->one; zero = TYPE->zero; gsum2d = TYPE->Cgsum2d; gemm = TYPE->Fgemm; /* * Figure out the loop bounds accordingly to DIRECA */ kb = pilaenv_( &ctxt, C2F_CHAR( &TYPE->type ) ); if( fwd ) { kstart = 0; kend = ( ( N - 1 ) / kb + 1 ) * kb; kstep = kb; GatherDir = CFORWARD; ScatterDir = CBACKWARD; } else { kstart = ( ( N - 1 ) / kb ) * kb; kend = kstep = -kb; GatherDir = CBACKWARD; ScatterDir = CFORWARD; } /* * Compute local information for A */ if( notran ) { Am = N; An = K; } else { Am = K; An = N; } PB_Cinfog2l( IA, JA, DESCA, nprow, npcol, myrow, mycol, &Aii, &Ajj, &Arow, &Acol ); Aimb = DESCA[IMB_]; Ainb = DESCA[INB_]; Amb = DESCA[MB_ ]; Anb = DESCA[NB_ ]; Ald = DESCA[LLD_]; Aimb1 = PB_Cfirstnb( Am, IA, Aimb, Amb ); Amp0 = PB_Cnumroc( Am, 0, Aimb1, Amb, myrow, Arow, nprow ); Ainb1 = PB_Cfirstnb( An, JA, Ainb, Anb ); Anq0 = PB_Cnumroc( An, 0, Ainb1, Anb, mycol, Acol, npcol ); if( ( Amp0 > 0 ) && ( Anq0 > 0 ) ) Aptr0 = Mptr( A, Aii, Ajj, Ald, size ); if( notran ) { top = *PB_Ctop( &ctxt, COMBINE, ROW, TOP_GET ); Cinb = DESCC[INB_]; Cnb = DESCC[NB_]; Ccsrc = DESCC[CSRC_]; if( upper ) { for( k = kstart; k != kend; k += kstep ) { kbb = N - k; kbb = MIN( kbb, kb ); ktmp = k + kbb; /* * Accumulate A( IA+k:IA+k+kbb-1, JA:JA+K-1 ) */ PB_CGatherV( TYPE, REUSE, &GatherDir, kbb, An, A, IA+k, JA, DESCA, ROW, &Aptr, DBUFA, &Afr ); /* * Replicate A( IA+k:IA+k+kbb-1, JA:JA+K-1 ) over A( IA:IA+k+kbb-1, JA:JA+K-1 ) */ PB_Cdescset( Ad0, ktmp, An, Aimb1, Ainb1, Amb, Anb, Arow, Acol, ctxt, Ald ); PB_CInV( TYPE, NOCONJG, ROW, ktmp, An, Ad0, kbb, Aptr, 0, 0, DBUFA, ROW, &WA, WAd, &WAfr ); /* * WC := A( IA:IA+k+kbb-1, JA:JA+K-1 ) * A( IA+k:IA+k+kbb-1, JA:JA+K-1 )' */ PB_COutV( TYPE, COLUMN, INIT, ktmp, An, Ad0, kbb, &WC, WCd, &WCfr, &WCsum ); Amp = PB_Cnumroc( ktmp, 0, Aimb1, Amb, myrow, Arow, nprow ); if( ( Amp > 0 ) && ( Anq0 > 0 ) ) gemm( C2F_CHAR( NOTRAN ), C2F_CHAR( &tran ), &Amp, &kbb, &Anq0, ALPHA, Aptr0, &Ald, WA, &WAd[LLD_], zero, WC, &WCd[LLD_] ); if( WAfr ) free( WA ); if( Afr ) free( Aptr ); if( WCsum ) { WCd[CSRC_] = PB_Cindxg2p( JC + ( fwd ? k : ktmp - 1 ), Cinb, Cnb, Ccsrc, Ccsrc, npcol ); if( Amp > 0 ) gsum2d( ctxt, ROW, &top, Amp, kbb, WC, WCd[LLD_], myrow, WCd[CSRC_] ); } /* * Zero lower triangle of WC( k:k+kbb-1, 0:kbb-1 ) */ if( conjg ) PB_Cplapad( TYPE, LOWER, CONJG, kbb, kbb, zero, zero, WC, k, 0, WCd ); else if( kbb > 1 ) PB_Cplapad( TYPE, LOWER, NOCONJG, kbb-1, kbb-1, zero, zero, WC, k+1, 0, WCd ); /* * Add WC to C( IC:IC+k+kbb-1, JC+k:JC+k+kbb-1 ) */ PB_CScatterV( TYPE, &ScatterDir, ktmp, kbb, WC, 0, 0, WCd, COLUMN, one, C, IC, JC+k, DESCC, COLUMN ); if( WCfr ) free( WC ); } } else { for( k = kstart; k != kend; k += kstep ) { ktmp = N - k; kbb = MIN( ktmp, kb ); /* * Accumulate A( IA+k:IA+k+kbb-1, JA:JA+K-1 ) */ PB_CGatherV( TYPE, REUSE, &GatherDir, kbb, An, A, IA+k, JA, DESCA, ROW, &Aptr, DBUFA, &Afr ); /* * Replicate A( IA+k:IA+k+kbb-1, JA:JA+K-1 ) over A( IA+k:IA+N-1, JA:JA+K-1 ) */ Acurimb1 = PB_Cfirstnb( ktmp, IA+k, Aimb, Amb ); Acurrow = PB_Cindxg2p( k, Aimb1, Amb, Arow, Arow, nprow ); PB_Cdescset( Ad0, ktmp, An, Acurimb1, Ainb1, Amb, Anb, Acurrow, Acol, ctxt, Ald ); PB_CInV( TYPE, NOCONJG, ROW, ktmp, An, Ad0, kbb, Aptr, 0, 0, DBUFA, ROW, &WA, WAd, &WAfr ); /* * WC := A( IA+k:IA+N-1, JA:JA+K-1 ) * A( IA+k:IA+k+kbb-1, JA:JA+K-1 )' */ PB_COutV( TYPE, COLUMN, INIT, ktmp, An, Ad0, kbb, &WC, WCd, &WCfr, &WCsum ); Amp = PB_Cnumroc( ktmp, k, Aimb1, Amb, myrow, Arow, nprow ); if( ( Amp > 0 ) && ( Anq0 > 0 ) ) gemm( C2F_CHAR( NOTRAN ), C2F_CHAR( &tran ), &Amp, &kbb, &Anq0, ALPHA, Mptr( Aptr0, Amp0-Amp, 0, Ald, size ), &Ald, WA, &WAd[LLD_], zero, WC, &WCd[LLD_] ); if( WAfr ) free( WA ); if( Afr ) free( Aptr ); if( WCsum ) { WCd[CSRC_] = PB_Cindxg2p( JC + ( fwd ? k : k + kbb - 1 ), Cinb, Cnb, Ccsrc, Ccsrc, npcol ); if( Amp > 0 ) gsum2d( ctxt, ROW, &top, Amp, kbb, WC, WCd[LLD_], myrow, WCd[CSRC_] ); } /* * Zero upper triangle of WC */ if( conjg ) PB_Cplapad( TYPE, UPPER, CONJG, kbb, kbb, zero, zero, WC, 0, 0, WCd ); else if( kbb > 1 ) PB_Cplapad( TYPE, UPPER, NOCONJG, kbb-1, kbb-1, zero, zero, WC, 0, 1, WCd ); /* * Add WC to C( IC+k:IC+N-1, JC+k:JC+k+kbb-1 ) */ PB_CScatterV( TYPE, &ScatterDir, ktmp, kbb, WC, 0, 0, WCd, COLUMN, one, C, IC+k, JC+k, DESCC, COLUMN ); if( WCfr ) free( WC ); } } } else { top = *PB_Ctop( &ctxt, COMBINE, COLUMN, TOP_GET ); Cimb = DESCC[IMB_]; Cmb = DESCC[MB_]; Crsrc = DESCC[RSRC_]; if( upper ) { for( k = kstart; k != kend; k += kstep ) { ktmp = N - k; kbb = MIN( ktmp, kb ); /* * Accumulate A( IA:IA+K-1, JA+k:JA+k+kbb-1 ) */ PB_CGatherV( TYPE, REUSE, &GatherDir, Am, kbb, A, IA, JA+k, DESCA, COLUMN, &Aptr, DBUFA, &Afr ); /* * Replicate A( IA:IA+K-1, JA+k:JA+k+kbb-1 ) over A( IA:IA+K-1, JA+k:JA+N-1 ) */ Acurinb1 = PB_Cfirstnb( ktmp, JA+k, Ainb, Anb ); Acurcol = PB_Cindxg2p( k, Ainb1, Anb, Acol, Acol, npcol ); PB_Cdescset( Ad0, Am, ktmp, Aimb1, Acurinb1, Amb, Anb, Arow, Acurcol, ctxt, Ald ); PB_CInV( TYPE, NOCONJG, COLUMN, Am, ktmp, Ad0, kbb, Aptr, 0, 0, DBUFA, COLUMN, &WA, WAd, &WAfr ); /* * WC := A( IA:IA+K-1, JA+k:JA+k+kbb-1 )' * A( IA:IA+K-1,JA+k:JA+N-1 ) */ PB_COutV( TYPE, ROW, INIT, Am, ktmp, Ad0, kbb, &WC, WCd, &WCfr, &WCsum ); Anq = PB_Cnumroc( ktmp, k, Ainb1, Anb, mycol, Acol, npcol ); if( ( Anq > 0 ) && ( Amp0 > 0 ) ) gemm( C2F_CHAR( &tran ), C2F_CHAR( NOTRAN ), &kbb, &Anq, &Amp0, ALPHA, WA, &WAd[LLD_], Mptr( Aptr0, 0, Anq0-Anq, Ald, size ), &Ald, zero, WC, &WCd[LLD_] ); if( WAfr ) free( WA ); if( Afr ) free( Aptr ); if( WCsum ) { WCd[RSRC_] = PB_Cindxg2p( IC + ( fwd ? k : k + kbb - 1 ), Cimb, Cmb, Crsrc, Crsrc, nprow ); if( Anq > 0 ) gsum2d( ctxt, COLUMN, &top, kbb, Anq, WC, WCd[LLD_], WCd[RSRC_], mycol ); } /* * Zero lower triangle of WC */ if( conjg ) PB_Cplapad( TYPE, LOWER, CONJG, kbb, kbb, zero, zero, WC, 0, 0, WCd ); else if( kbb > 1 ) PB_Cplapad( TYPE, LOWER, NOCONJG, kbb-1, kbb-1, zero, zero, WC, 1, 0, WCd ); /* * Add WC to C( IC+k:IC+k+kbb-1, JC+k:JC+N-1 ) */ PB_CScatterV( TYPE, &ScatterDir, kbb, ktmp, WC, 0, 0, WCd, ROW, one, C, IC+k, JC+k, DESCC, ROW ); if( WCfr ) free( WC ); } } else { for( k = kstart; k != kend; k += kstep ) { kbb = N - k; kbb = MIN( kbb, kb ); ktmp = k + kbb; /* * Accumulate A( IA:IA+K-1, JA+k:JA+k+kbb-1 ) */ PB_CGatherV( TYPE, REUSE, &GatherDir, Am, kbb, A, IA, JA+k, DESCA, COLUMN, &Aptr, DBUFA, &Afr ); /* * Replicate A( IA:IA+K-1, JA+k:JA+k+kbb-1 ) over A( IA:IA+K-1, JA:JA+k+kbb-1 ) */ PB_Cdescset( Ad0, Am, ktmp, Aimb1, Ainb1, Amb, Anb, Arow, Acol, ctxt, Ald ); PB_CInV( TYPE, NOCONJG, COLUMN, Am, ktmp, Ad0, kbb, Aptr, 0, 0, DBUFA, COLUMN, &WA, WAd, &WAfr ); /* * WC := A( IA:IA+K-1, JA+k:JA+k+kbb-1 )' * A( IA:IA+K-1, JA:JA+k+kbb-1 ) */ PB_COutV( TYPE, ROW, INIT, Am, ktmp, Ad0, kbb, &WC, WCd, &WCfr, &WCsum ); Anq = PB_Cnumroc( ktmp, 0, Ainb1, Anb, mycol, Acol, npcol ); if( ( Anq > 0 ) && ( Amp0 > 0 ) ) gemm( C2F_CHAR( &tran ), C2F_CHAR( NOTRAN ), &kbb, &Anq, &Amp0, ALPHA, WA, &WAd[LLD_], Aptr0, &Ald, zero, WC, &WCd[LLD_] ); if( WAfr ) free( WA ); if( Afr ) free( Aptr ); if( WCsum ) { WCd[RSRC_] = PB_Cindxg2p( IC + ( fwd ? k : ktmp - 1 ), Cimb, Cmb, Crsrc, Crsrc, nprow ); if( Anq > 0 ) gsum2d( ctxt, COLUMN, &top, kbb, Anq, WC, WCd[LLD_], WCd[RSRC_], mycol ); } /* * Zero upper triangle of WC( 0:kbb-1, k:k+kbb-1 ) */ if( conjg ) PB_Cplapad( TYPE, UPPER, CONJG, kbb, kbb, zero, zero, WC, 0, k, WCd ); else if( kbb > 1 ) PB_Cplapad( TYPE, UPPER, NOCONJG, kbb-1, kbb-1, zero, zero, WC, 0, k+1, WCd ); /* * Add WC to C( IC+k:IC+k+kbb-1, JC:JC+k+kbb-1 ) */ PB_CScatterV( TYPE, &ScatterDir, kbb, ktmp, WC, 0, 0, WCd, ROW, one, C, IC+k, JC, DESCC, ROW ); if( WCfr ) free( WC ); } } } /* * End of PB_CpsyrkAC */ }