pzblas1tstchke()

subroutine pzblas1tstchke	(	logical, dimension( * )	ltest,
		integer	inout,
		integer	nprocs
	)

Definition at line 1494 of file pzblas1tst.f.

*
*  -- PBLAS test routine (version 2.0) --
*     University of Tennessee, Knoxville, Oak Ridge National Laboratory,
*     and University of California, Berkeley.
*     April 1, 1998
*
*     .. Scalar Arguments ..
      INTEGER            INOUT, NPROCS
*     ..
*     .. Array Arguments ..
      LOGICAL            LTEST( * )
*     ..
*
*  Purpose
*  =======
*
*  PZBLAS1TSTCHKE tests the error exits of the Level 1 PBLAS.
*
*  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 DESCA:
*
*  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_NUMROC:
*  Lr( IA, K ) = PB_NUMROC( K, IA, IMB_A, MB_A, MYROW, RSRC_A, NPROW )
*  Lc( JA, K ) = PB_NUMROC( K, JA, INB_A, NB_A, MYCOL, CSRC_A, NPCOL )
*
*  Arguments
*  =========
*
*  LTEST   (global input) LOGICAL array
*          On entry, LTEST is an array of dimension at least 10 (NSUBS).
*             If LTEST( 1 )  is .TRUE., PZSWAP  will be tested;
*             If LTEST( 2 )  is .TRUE., PZSCAL  will be tested;
*             If LTEST( 3 )  is .TRUE., PZDSCAL will be tested;
*             If LTEST( 4 )  is .TRUE., PZCOPY  will be tested;
*             If LTEST( 5 )  is .TRUE., PZAXPY  will be tested;
*             If LTEST( 6 )  is .TRUE., PZDOTU  will be tested;
*             If LTEST( 7 )  is .TRUE., PZDOTC  will be tested;
*             If LTEST( 8 )  is .TRUE., PDZNRM2 will be tested;
*             If LTEST( 9 )  is .TRUE., PDZASUM will be tested;
*             If LTEST( 10 ) is .TRUE., PZAMAX  will be tested.
*
*  INOUT   (global input) INTEGER
*          On entry,  INOUT  specifies  the unit number for output file.
*          When INOUT is 6, output to screen,  when INOUT = 0, output to
*          stderr. INOUT is only defined in process 0.
*
*  NPROCS  (global input) INTEGER
*          On entry, NPROCS specifies the total number of processes cal-
*          ling this routine.
*
*  Calling sequence encodings
*  ==========================
*
*  code Formal argument list                                Examples
*
*  11   (n,      v1,v2)                                     _SWAP, _COPY
*  12   (n,s1,   v1   )                                     _SCAL, _SCAL
*  13   (n,s1,   v1,v2)                                     _AXPY, _DOT_
*  14   (n,s1,i1,v1   )                                     _AMAX
*  15   (n,u1,   v1   )                                     _ASUM, _NRM2
*
*  21   (     trans,     m,n,s1,m1,v1,s2,v2)                _GEMV
*  22   (uplo,             n,s1,m1,v1,s2,v2)                _SYMV, _HEMV
*  23   (uplo,trans,diag,  n,   m1,v1      )                _TRMV, _TRSV
*  24   (                m,n,s1,v1,v2,m1)                   _GER_
*  25   (uplo,             n,s1,v1,   m1)                   _SYR
*  26   (uplo,             n,u1,v1,   m1)                   _HER
*  27   (uplo,             n,s1,v1,v2,m1)                   _SYR2, _HER2
*
*  31   (          transa,transb,     m,n,k,s1,m1,m2,s2,m3) _GEMM
*  32   (side,uplo,                   m,n,  s1,m1,m2,s2,m3) _SYMM, _HEMM
*  33   (     uplo,trans,               n,k,s1,m1,   s2,m3) _SYRK
*  34   (     uplo,trans,               n,k,u1,m1,   u2,m3) _HERK
*  35   (     uplo,trans,               n,k,s1,m1,m2,s2,m3) _SYR2K
*  36   (     uplo,trans,               n,k,s1,m1,m2,u2,m3) _HER2K
*  37   (                             m,n,  s1,m1,   s2,m3) _TRAN_
*  38   (side,uplo,transa,       diag,m,n,  s1,m1,m2      ) _TRMM, _TRSM
*  39   (          trans,             m,n,  s1,m1,   s2,m3) _GEADD
*  40   (     uplo,trans,             m,n,  s1,m1,   s2,m3) _TRADD
*
*  -- Written on April 1, 1998 by
*     Antoine Petitet, University  of  Tennessee, Knoxville 37996, USA.
*
*  =====================================================================
*
*     .. Parameters ..
      INTEGER            NSUBS
      parameter( nsubs = 10 )
*     ..
*     .. Local Scalars ..
      LOGICAL            ABRTSAV
      INTEGER            I, ICTXT, MYCOL, MYROW, NPCOL, NPROW
*     ..
*     .. Local Arrays ..
      INTEGER            SCODE( NSUBS )
*     ..
*     .. External Subroutines ..
      EXTERNAL           blacs_get, blacs_gridexit, blacs_gridinfo,
     $                   blacs_gridinit, pdzasum, pdznrm2, pzamax,
     $                   pzaxpy, pzcopy, pzdimee, pzdotc, pzdotu,
     $                   pzdscal, pzscal, pzswap, pzvecee
*     ..
*     .. Common Blocks ..
      LOGICAL            ABRTFLG
      INTEGER            NOUT
      CHARACTER*7        SNAMES( NSUBS )
      COMMON             /snamec/snames
      COMMON             /pberrorc/nout, abrtflg
*     ..
*     .. Data Statements ..
      DATA               scode/11, 12, 12, 11, 13, 13, 13, 15, 15, 14/
*     ..
*     .. Executable Statements ..
*
*     Temporarily define blacs grid to include all processes so
*     information can be broadcast to all processes.
*
      CALL blacs_get( -1, 0, ictxt )
      CALL blacs_gridinit( ictxt, 'Row-major', 1, nprocs )
      CALL blacs_gridinfo( ictxt, nprow, npcol, myrow, mycol )
*
*     Set ABRTFLG to FALSE so that the PBLAS error handler won't abort
*     on errors during these tests and set the output device unit for
*     it.
*
      abrtsav = abrtflg
      abrtflg = .false.
      nout    = inout
*
*     Test PZSWAP
*
      i = 1
      IF( ltest( i ) ) THEN
         CALL pzdimee( ictxt, nout, pzswap, scode( i ), snames( i ) )
         CALL pzvecee( ictxt, nout, pzswap, scode( i ), snames( i ) )
      END IF
*
*     Test PZSCAL
*
      i = i + 1
      IF( ltest( i ) ) THEN
         CALL pzdimee( ictxt, nout, pzscal, scode( i ), snames( i ) )
         CALL pzvecee( ictxt, nout, pzscal, scode( i ), snames( i ) )
      END IF
*
*     Test PZDSCAL
*
      i = i + 1
      IF( ltest( i ) ) THEN
         CALL pzdimee( ictxt, nout, pzdscal, scode( i ), snames( i ) )
         CALL pzvecee( ictxt, nout, pzdscal, scode( i ), snames( i ) )
      END IF
*
*     Test PZCOPY
*
      i = i + 1
      IF( ltest( i ) ) THEN
         CALL pzdimee( ictxt, nout, pzcopy, scode( i ), snames( i ) )
         CALL pzvecee( ictxt, nout, pzcopy, scode( i ), snames( i ) )
      END IF
*
*     Test PZAXPY
*
      i = i + 1
      IF( ltest( i ) ) THEN
         CALL pzdimee( ictxt, nout, pzaxpy, scode( i ), snames( i ) )
         CALL pzvecee( ictxt, nout, pzaxpy, scode( i ), snames( i ) )
      END IF
*
*     Test PZDOTU
*
      i = i + 1
      IF( ltest( i ) ) THEN
         CALL pzdimee( ictxt, nout, pzdotu, scode( i ), snames( i ) )
         CALL pzvecee( ictxt, nout, pzdotu, scode( i ), snames( i ) )
      END IF
*
*     Test PZDOTC
*
      i = i + 1
      IF( ltest( i ) ) THEN
         CALL pzdimee( ictxt, nout, pzdotc, scode( i ), snames( i ) )
         CALL pzvecee( ictxt, nout, pzdotc, scode( i ), snames( i ) )
      END IF
*
*     PDZNRM2
*
      i = i + 1
      IF( ltest( i ) ) THEN
         CALL pzdimee( ictxt, nout, pdznrm2, scode( i ), snames( i ) )
         CALL pzvecee( ictxt, nout, pdznrm2, scode( i ), snames( i ) )
      END IF
*
*     Test PDZASUM
*
      i = i + 1
      IF( ltest( i ) ) THEN
         CALL pzdimee( ictxt, nout, pdzasum, scode( i ), snames( i ) )
         CALL pzvecee( ictxt, nout, pdzasum, scode( i ), snames( i ) )
      END IF
*
*     Test PZAMAX
*
      i = i + 1
      IF( ltest( i ) ) THEN
         CALL pzdimee( ictxt, nout, pzamax, scode( i ), snames( i ) )
         CALL pzvecee( ictxt, nout, pzamax, scode( i ), snames( i ) )
      END IF
*
      IF( myrow.EQ.0 .AND. mycol.EQ.0 )
     $   WRITE( nout, fmt = 9999 )
*
      CALL blacs_gridexit( ictxt )
*
*     Reset ABRTFLG to the value it had before calling this routine
*
      abrtflg = abrtsav
*
 9999 FORMAT( 2x, 'Error-exit tests completed.' )
*
      RETURN
*
*     End of PZBLAS1TSTCHKE
*

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