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SUBROUTINE PCHK1MAT( MA, MAPOS0, NA, NAPOS0, IA, JA, DESCA,
$ DESCAPOS0, NEXTRA, EX, EXPOS, INFO )
*
* -- ScaLAPACK tools routine (version 1.7) --
* University of Tennessee, Knoxville, Oak Ridge National Laboratory,
* and University of California, Berkeley.
* May 1, 1997
*
* .. Scalar Arguments ..
INTEGER DESCAPOS0, IA, INFO, JA, MA, MAPOS0, NA,
$ NAPOS0, NEXTRA
* ..
* .. Array Arguments ..
INTEGER DESCA( * ), EX( NEXTRA ), EXPOS( NEXTRA )
* ..
*
* Purpose
* =======
*
* PCHK1MAT checks that the values associated with one distributed
* matrix are consistant across the entire process grid.
*
* Notes
* =====
*
* This routine checks that all values are the same across the grid.
* It does no local checking; it is therefore legal to abuse the
* definitions of the non-descriptor arguments, i.e., if the routine
* you are checking does not possess a MA value, you may pass some
* other integer that must be global into this argument instead.
*
* Arguments
* =========
*
* MA (global input) INTEGER
* The global number of matrix rows of A being operated on.
*
* MAPOS0 (global input) INTEGER
* Where in the calling routine's parameter list MA appears.
*
* NA (global input) INTEGER
* The global number of matrix columns of A being operated on.
*
* NAPOS0 (global input) INTEGER
* Where in the calling routine's parameter list NA appears.
*
* IA (global input) INTEGER
* The row index in the global array A indicating the first
* row of sub( A ).
*
* JA (global input) INTEGER
* The column index in the global array A indicating the
* first column of sub( A ).
*
* DESCA (global and local input) INTEGER array of dimension DLEN_.
* The array descriptor for the distributed matrix A.
*
* DESCAPOS0 (global input) INTEGER
* Where in the calling routine's parameter list DESCA
* appears. Note that we assume IA and JA are respectively 2
* and 1 entries behind DESCA.
*
* NEXTRA (global input) INTEGER
* The number of extra parameters (i.e., besides the ones
* above) to check. NEXTRA <= LDW - 11.
*
* EX (local input) INTEGER array of dimension (NEXTRA)
* The values of these extra parameters
*
* EXPOS (local input) INTEGER array of dimension (NEXTRA)
* The parameter list positions of these extra values.
*
* INFO (local input/global output) INTEGER
* = 0: successful exit
* < 0: If the i-th argument is an array and the j-entry had
* an illegal value, then INFO = -(i*100+j), if the i-th
* argument is a scalar and had an illegal value, then
* INFO = -i.
*
* =====================================================================
*
* .. Parameters ..
INTEGER BLOCK_CYCLIC_2D, CSRC_, CTXT_, DLEN_, DTYPE_,
$ LLD_, MB_, M_, NB_, N_, RSRC_
PARAMETER ( BLOCK_CYCLIC_2D = 1, DLEN_ = 9, DTYPE_ = 1,
$ CTXT_ = 2, M_ = 3, N_ = 4, MB_ = 5, NB_ = 6,
$ RSRC_ = 7, CSRC_ = 8, LLD_ = 9 )
INTEGER BIGNUM, DESCMULT, LDW
PARAMETER ( DESCMULT = 100, BIGNUM = DESCMULT * DESCMULT,
$ LDW = 25 )
* ..
* .. Local Scalars ..
INTEGER DESCPOS, K
* ..
* .. Local Arrays ..
INTEGER IWORK( LDW, 2 ), IWORK2( LDW )
* ..
* .. External Subroutines ..
EXTERNAL GLOBCHK
* ..
* .. Executable Statements ..
*
* Want to find errors with MIN( ), so if no error, set it to a big
* number. If there already is an error, multiply by the the
* descriptor multiplier.
*
IF( INFO.GE.0 ) THEN
INFO = BIGNUM
ELSE IF( INFO.LT.-DESCMULT ) THEN
INFO = -INFO
ELSE
INFO = -INFO * DESCMULT
END IF
*
* Pack values and their positions in the parameter list, factoring
* in the descriptor multiplier
*
IWORK( 1, 1 ) = MA
IWORK( 1, 2 ) = MAPOS0 * DESCMULT
IWORK( 2, 1 ) = NA
IWORK( 2, 2 ) = NAPOS0 * DESCMULT
IWORK( 3, 1 ) = IA
IWORK( 3, 2 ) = (DESCAPOS0-2) * DESCMULT
IWORK( 4, 1 ) = JA
IWORK( 4, 2 ) = (DESCAPOS0-1) * DESCMULT
DESCPOS = DESCAPOS0 * DESCMULT
*
IWORK( 5, 1 ) = DESCA( DTYPE_ )
IWORK( 5, 2 ) = DESCPOS + DTYPE_
IWORK( 6, 1 ) = DESCA( M_ )
IWORK( 6, 2 ) = DESCPOS + M_
IWORK( 7, 1 ) = DESCA( N_ )
IWORK( 7, 2 ) = DESCPOS + N_
IWORK( 8, 1 ) = DESCA( MB_ )
IWORK( 8, 2 ) = DESCPOS + MB_
IWORK( 9, 1 ) = DESCA( NB_ )
IWORK( 9, 2 ) = DESCPOS + NB_
IWORK( 10, 1 ) = DESCA( RSRC_ )
IWORK( 10, 2 ) = DESCPOS + RSRC_
IWORK( 11, 1 ) = DESCA( CSRC_ )
IWORK( 11, 2 ) = DESCPOS + CSRC_
*
IF( NEXTRA.GT.0 ) THEN
DO 10 K = 1, NEXTRA
IWORK( 11+K, 1 ) = EX( K )
IWORK( 11+K, 2 ) = EXPOS( K )
10 CONTINUE
END IF
K = 11 + NEXTRA
*
* Get the smallest error detected anywhere (BIGNUM if no error)
*
CALL GLOBCHK( DESCA( CTXT_ ), K, IWORK, LDW, IWORK2, INFO )
*
* Prepare output: set info = 0 if no error, and divide by DESCMULT if
* error is not in a descriptor entry
*
IF( INFO .EQ. BIGNUM ) THEN
INFO = 0
ELSE IF( MOD( INFO, DESCMULT ) .EQ. 0 ) THEN
INFO = -INFO / DESCMULT
ELSE
INFO = -INFO
END IF
*
RETURN
*
* End of PCHK1MAT
*
END
*
SUBROUTINE PCHK2MAT( MA, MAPOS0, NA, NAPOS0, IA, JA, DESCA,
$ DESCAPOS0, MB, MBPOS0, NB, NBPOS0, IB, JB,
$ DESCB, DESCBPOS0, NEXTRA, EX, EXPOS, INFO )
*
* -- ScaLAPACK tools routine (version 1.7) --
* University of Tennessee, Knoxville, Oak Ridge National Laboratory,
* and University of California, Berkeley.
* May 1, 1997
*
* .. Scalar Arguments ..
INTEGER DESCAPOS0, DESCBPOS0, IA, IB, INFO, JA, JB, MA,
$ MAPOS0, MB, MBPOS0, NA, NAPOS0, NB, NBPOS0,
$ NEXTRA
* ..
* .. Array Arguments ..
INTEGER DESCA( * ), DESCB( 8 ), EX( NEXTRA ),
$ EXPOS( NEXTRA )
* ..
*
* Purpose
* =======
*
* PCHK2MAT checks that the values associated with two distributed
* matrices are consistant across the entire process grid.
*
* Notes
* =====
*
* This routine checks that all values are the same across the grid.
* It does no local checking; it is therefore legal to abuse the
* definitions of the non-descriptor arguments, i.e., if the routine
* you are checking does not possess a MA value, you may pass some
* other integer that must be global into this argument instead.
*
* Arguments
* =========
*
* MA (global input) INTEGER
* The global number of matrix rows of A being operated on.
*
* MAPOS0 (global input) INTEGER
* Where in the calling routine's parameter list MA appears.
*
* NA (global input) INTEGER
* The global number of matrix columns of A being operated on.
*
* NAPOS0 (global input) INTEGER
* Where in the calling routine's parameter list NA appears.
*
* IA (global input) INTEGER
* The row index in the global array A indicating the first
* row of sub( A ).
*
* JA (global input) INTEGER
* The column index in the global array A indicating the
* first column of sub( A ).
*
* DESCA (global and local input) INTEGER array of dimension DLEN_.
* The array descriptor for the distributed matrix A.
*
* DESCAPOS0 (global input) INTEGER
* Where in the calling routine's parameter list DESCA
* appears. Note that we assume IA and JA are respectively 2
* and 1 entries behind DESCA.
*
* MB (global input) INTEGER
* The global number of matrix rows of B being operated on.
*
* MBPOS0 (global input) INTEGER
* Where in the calling routine's parameter list MB appears.
*
* NB (global input) INTEGER
* The global number of matrix columns of B being operated on.
*
* NBPOS0 (global input) INTEGER
* Where in the calling routine's parameter list NB appears.
*
* IB (global input) INTEGER
* The row index in the global array B indicating the first
* row of sub( B ).
*
* JB (global input) INTEGER
* The column index in the global array B indicating the
* first column of sub( B ).
*
* DESCB (global and local input) INTEGER array of dimension DLEN_.
* The array descriptor for the distributed matrix B.
*
* DESCBPOS0 (global input) INTEGER
* Where in the calling routine's parameter list DESCB
* appears. Note that we assume IB and JB are respectively 2
* and 1 entries behind DESCB.
*
* NEXTRA (global input) INTEGER
* The number of extra parameters (i.e., besides the ones
* above) to check. NEXTRA <= LDW - 22.
*
* EX (local input) INTEGER array of dimension (NEXTRA)
* The values of these extra parameters
*
* EXPOS (local input) INTEGER array of dimension (NEXTRA)
* The parameter list positions of these extra values.
*
* INFO (local input/global output) INTEGER
* = 0: successful exit
* < 0: If the i-th argument is an array and the j-entry had
* an illegal value, then INFO = -(i*100+j), if the i-th
* argument is a scalar and had an illegal value, then
* INFO = -i.
*
* =====================================================================
*
* .. Parameters ..
INTEGER BLOCK_CYCLIC_2D, CSRC_, CTXT_, DLEN_, DTYPE_,
$ LLD_, MB_, M_, NB_, N_, RSRC_
PARAMETER ( BLOCK_CYCLIC_2D = 1, DLEN_ = 9, DTYPE_ = 1,
$ CTXT_ = 2, M_ = 3, N_ = 4, MB_ = 5, NB_ = 6,
$ RSRC_ = 7, CSRC_ = 8, LLD_ = 9 )
INTEGER DESCMULT, BIGNUM, LDW
PARAMETER ( DESCMULT = 100, BIGNUM = DESCMULT * DESCMULT,
$ LDW = 35 )
* ..
* .. Local Scalars ..
INTEGER K, DESCPOS
* ..
* .. Local Arrays ..
INTEGER IWORK( LDW, 2 ), IWORK2( LDW )
* ..
* .. External Subroutines ..
EXTERNAL GLOBCHK
* ..
* .. Intrinsic Functions ..
INTRINSIC MOD
* ..
* .. Executable Statements ..
*
* Want to find errors with MIN( ), so if no error, set it to a big
* number. If there already is an error, multiply by the the
* descriptor multiplier.
*
IF( INFO.GE.0 ) THEN
INFO = BIGNUM
ELSE IF( INFO.LT.-DESCMULT ) THEN
INFO = -INFO
ELSE
INFO = -INFO * DESCMULT
END IF
*
* Pack values and their positions in the parameter list, factoring
* in the descriptor multiplier
*
IWORK( 1, 1 ) = MA
IWORK( 1, 2 ) = MAPOS0 * DESCMULT
IWORK( 2, 1 ) = NA
IWORK( 2, 2 ) = NAPOS0 * DESCMULT
IWORK( 3, 1 ) = IA
IWORK( 3, 2 ) = (DESCAPOS0-2) * DESCMULT
IWORK( 4, 1 ) = JA
IWORK( 4, 2 ) = (DESCAPOS0-1) * DESCMULT
DESCPOS = DESCAPOS0 * DESCMULT
*
IWORK( 5, 1 ) = DESCA( DTYPE_ )
IWORK( 5, 2 ) = DESCPOS + DTYPE_
IWORK( 6, 1 ) = DESCA( M_ )
IWORK( 6, 2 ) = DESCPOS + M_
IWORK( 7, 1 ) = DESCA( N_ )
IWORK( 7, 2 ) = DESCPOS + N_
IWORK( 8, 1 ) = DESCA( MB_ )
IWORK( 8, 2 ) = DESCPOS + MB_
IWORK( 9, 1 ) = DESCA( NB_ )
IWORK( 9, 2 ) = DESCPOS + NB_
IWORK( 10, 1 ) = DESCA( RSRC_ )
IWORK( 10, 2 ) = DESCPOS + RSRC_
IWORK( 11, 1 ) = DESCA( CSRC_ )
IWORK( 11, 2 ) = DESCPOS + CSRC_
*
IWORK( 12, 1 ) = MB
IWORK( 12, 2 ) = MBPOS0 * DESCMULT
IWORK( 13, 1 ) = NB
IWORK( 13, 2 ) = NBPOS0 * DESCMULT
IWORK( 14, 1 ) = IB
IWORK( 14, 2 ) = (DESCBPOS0-2) * DESCMULT
IWORK( 15, 1 ) = JB
IWORK( 15, 2 ) = (DESCBPOS0-1) * DESCMULT
DESCPOS = DESCBPOS0 * DESCMULT
*
IWORK( 16, 1 ) = DESCB( DTYPE_ )
IWORK( 16, 2 ) = DESCPOS + DTYPE_
IWORK( 17, 1 ) = DESCB( M_ )
IWORK( 17, 2 ) = DESCPOS + M_
IWORK( 18, 1 ) = DESCB( N_ )
IWORK( 18, 2 ) = DESCPOS + N_
IWORK( 19, 1 ) = DESCB( MB_ )
IWORK( 19, 2 ) = DESCPOS + MB_
IWORK( 20, 1 ) = DESCB( NB_ )
IWORK( 20, 2 ) = DESCPOS + NB_
IWORK( 21, 1 ) = DESCB( RSRC_ )
IWORK( 21, 2 ) = DESCPOS + RSRC_
IWORK( 22, 1 ) = DESCB( CSRC_ )
IWORK( 22, 2 ) = DESCPOS + CSRC_
*
IF( NEXTRA.GT.0 ) THEN
DO 10 K = 1, NEXTRA
IWORK( 22+K, 1 ) = EX( K )
IWORK( 22+K, 2 ) = EXPOS( K )
10 CONTINUE
END IF
K = 22 + NEXTRA
*
* Get the smallest error detected anywhere (BIGNUM if no error)
*
CALL GLOBCHK( DESCA( CTXT_ ), K, IWORK, LDW, IWORK2, INFO )
*
* Prepare output: set info = 0 if no error, and divide by DESCMULT
* if error is not in a descriptor entry.
*
IF( INFO.EQ.BIGNUM ) THEN
INFO = 0
ELSE IF( MOD( INFO, DESCMULT ) .EQ. 0 ) THEN
INFO = -INFO / DESCMULT
ELSE
INFO = -INFO
END IF
*
RETURN
*
* End of PCHK2MAT
*
END
*
SUBROUTINE GLOBCHK( ICTXT, N, X, LDX, IWORK, INFO )
*
* -- ScaLAPACK tools routine (version 1.7) --
* University of Tennessee, Knoxville, Oak Ridge National Laboratory,
* and University of California, Berkeley.
* May 1, 1997
*
* .. Scalar Arguments ..
INTEGER ICTXT, INFO, LDX, N
* ..
* .. Array Arguments ..
INTEGER IWORK( N ), X( LDX, 2 )
* ..
*
* Purpose
* =======
*
* GLOBCHK checks that values in X(i,1) are the same on all processes
* in the process grid indicated by ICTXT.
*
* Arguments
* =========
*
* ICTXT (global input) INTEGER
* The BLACS context handle indicating the context over which
* the values are to be the same.
*
* N (global input) INTEGER
* The number of values to be compared.
*
* X (local input) INTEGER array, dimension (N,2)
* The 1st column contains the values which should be the same
* on all processes. The 2nd column indicates where in the
* calling routine's parameter list the corresponding value
* from column 1 came from.
*
* LDX (local input) INTEGER
* The leading dimension of the array X. LDX >= MAX(1,N).
*
* IWORK (local workspace) INTEGER array, dimension (N)
* Used to receive other processes' values for comparing with X.
*
* INFO (local input/global output) INTEGER
* On entry, the smallest error flag so far generated, or BIGNUM
* for no error. On exit:
* = BIGNUM : no error
* < 0: if INFO = -i*100, the i-th argument had an illegal
* value, or was different between processes.
*
* =====================================================================
*
* .. Local Scalars ..
INTEGER K, MYROW, MYCOL
* ..
* .. External Subroutines ..
EXTERNAL BLACS_GRIDINFO, IGAMN2D, IGEBR2D, IGEBS2D
* ..
* .. Intrinsic Functions ..
INTRINSIC MIN
* ..
* .. Executable Statements ..
*
CALL BLACS_GRIDINFO( ICTXT, IWORK, K, MYROW, MYCOL )
*
IF( MYROW.EQ.0 .AND. MYCOL.EQ.0 ) THEN
CALL IGEBS2D( ICTXT, 'All', ' ', N, 1, X, N )
ELSE
CALL IGEBR2D( ICTXT, 'All', ' ', N, 1, IWORK, N, 0, 0 )
DO 10 K = 1, N
IF( X( K, 1 ).NE.IWORK( K ) )
$ INFO = MIN( INFO, X( K, 2 ) )
10 CONTINUE
END IF
*
CALL IGAMN2D( ICTXT, 'All', ' ', 1, 1, INFO, 1, K, K, -1, -1, 0 )
*
RETURN
*
* End GLOBCHK
*
END
|
