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SUBROUTINE PCLASIZESEP( DESCA, IPREPAD, IPOSTPAD, SIZEMQRLEFT,
$ SIZEMQRRIGHT, SIZEQRF, SIZETMS, RSIZEQTQ,
$ RSIZECHK, SIZEHEEVX, RSIZEHEEVX,
$ ISIZEHEEVX, SIZEHEEVD, RSIZEHEEVD,
$ ISIZEHEEVD, SIZESUBTST, RSIZESUBTST,
$ ISIZESUBTST, SIZETST, RSIZETST, ISIZETST )
*
* -- ScaLAPACK routine (version 1.7) --
* University of Tennessee, Knoxville, Oak Ridge National Laboratory,
* and University of California, Berkeley.
* May 1, 1997
*
* .. Scalar Arguments ..
INTEGER IPOSTPAD, IPREPAD, ISIZEHEEVD, ISIZEHEEVX,
$ ISIZESUBTST, ISIZETST, RSIZECHK, RSIZEHEEVD,
$ RSIZEHEEVX, RSIZEQTQ, RSIZESUBTST, RSIZETST,
$ SIZEHEEVD, SIZEHEEVX, SIZEMQRLEFT,
$ SIZEMQRRIGHT, SIZEQRF, SIZESUBTST, SIZETMS,
$ SIZETST
* ..
* .. Array Arguments ..
INTEGER DESCA( * )
* ..
*
* Purpose
* =======
*
* PCLASIZESEP computes the amount of memory needed by
* various SEP test routines, as well as HEEVX itself
*
* Arguments
* =========
*
* DESCA (global input) INTEGER array dimension ( DLEN_ )
* Array descriptor as passed to PCHEEVX
*
* SIZEMQRLEFT LWORK for the 1st PCUNMQR call in PCLAGHE
*
* SIZEMQRRIGHT LWORK for the 2nd PCUNMQR call in PCLAGHE
*
* SIZEQRF LWORK for PCGEQRF in PCLAGHE
*
* SIZETMS LWORK for PCLATMS
*
* RSIZEQTQ LWORK for PCSEPQTQ (nexer complex)
*
* RSIZECHK LWORK for PCSEPCHK
*
* SIZEHEEVX LWORK for PCHEEVX
*
* RSIZEHEEVX LRWORK for PCHEEVX
*
* ISIZEHEEVX LIWORK for PCHEEVX
*
* SIZEHEEVD LWORK for PCHEEVD
*
* RSIZEHEEVD LRWORK for PCHEEVD
*
* ISIZEHEEVD LIWORK for PCHEEVD
*
* SIZESUBTST LWORK for PCSUBTST
*
* RSIZESUBTST LRWORK for PCSUBTST
*
* ISIZESUBTST LIWORK for PCSUBTST
*
* SIZETST LWORK for PCTST
*
* RSIZETST LRWORK for PCTST
*
* ISIZETST LIWORK for PCTST
*
* .. Parameters ..
INTEGER BLOCK_CYCLIC_2D, DLEN_, DTYPE_, CTXT_, M_, N_,
$ MB_, NB_, RSRC_, CSRC_, LLD_
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 )
* ..
* .. Local Scalars ..
INTEGER ANB, CSRC_A, IACOL, IAROW, ICOFFA, ICTXT,
$ IROFFA, LCM, LCMQ, LDA, MQ0, MYCOL, MYROW, N,
$ NB, NEIG, NHETRD_LWOPT, NN, NNP, NP, NP0,
$ NPCOL, NPROW, NPS, NQ, RSRC_A, SIZECHK,
$ SIZEQTQ, SQNPC
* ..
* .. External Functions ..
INTEGER ICEIL, ILCM, INDXG2P, NUMROC, PJLAENV
EXTERNAL ICEIL, ILCM, INDXG2P, NUMROC, PJLAENV
* ..
** .. Executable Statements ..
* This is just to keep ftnchek happy
* .. External Subroutines ..
EXTERNAL BLACS_GRIDINFO
* ..
* .. Intrinsic Functions ..
INTRINSIC INT, MAX, REAL, SQRT
* ..
* .. Executable Statements ..
IF( BLOCK_CYCLIC_2D*CSRC_*CTXT_*DLEN_*DTYPE_*LLD_*MB_*M_*NB_*N_*
$ RSRC_.LT.0 )RETURN
*
N = DESCA( M_ )
NB = DESCA( MB_ )
RSRC_A = DESCA( RSRC_ )
CSRC_A = DESCA( CSRC_ )
*
LDA = DESCA( LLD_ )
CALL BLACS_GRIDINFO( DESCA( CTXT_ ), NPROW, NPCOL, MYROW, MYCOL )
*
LCM = ILCM( NPROW, NPCOL )
LCMQ = LCM / NPCOL
IROFFA = 0
ICOFFA = 0
IAROW = INDXG2P( 1, NB, MYROW, RSRC_A, NPROW )
IACOL = INDXG2P( 1, NB, MYCOL, CSRC_A, NPCOL )
NP = NUMROC( N+IROFFA, NB, MYROW, IAROW, NPROW )
NQ = NUMROC( N+ICOFFA, NB, MYCOL, IACOL, NPCOL )
SIZEMQRLEFT = MAX( ( NB*( NB-1 ) ) / 2, ( NP+NQ )*NB ) + NB*NB
SIZEMQRRIGHT = MAX( ( NB*( NB-1 ) ) / 2,
$ ( NQ+MAX( NP+NUMROC( NUMROC( N+ICOFFA, NB, 0, 0,
$ NPCOL ), NB, 0, 0, LCMQ ), NP ) )*NB ) + NB*NB
SIZEQRF = NB*NP + NB*NQ + NB*NB
SIZETMS = ( LDA+1 )*MAX( 1, NQ ) +
$ MAX( SIZEMQRLEFT, SIZEMQRRIGHT, SIZEQRF )
*
NP0 = NUMROC( N, DESCA( MB_ ), 0, 0, NPROW )
MQ0 = NUMROC( N, DESCA( NB_ ), 0, 0, NPCOL )
SIZEQTQ = 0
SIZECHK = 0
RSIZEQTQ = 2 + MAX( DESCA( MB_ ), 2 )*( 2*NP0+MQ0 )
RSIZECHK = NUMROC( N, DESCA( NB_ ), MYCOL, 0, NPCOL )
*
NEIG = N
NN = MAX( N, NB, 2 )
NP0 = NUMROC( NN, NB, 0, 0, NPROW )
MQ0 = NUMROC( MAX( NEIG, NB, 2 ), NB, 0, 0, NPCOL )
SIZEHEEVX = N + ( NP0+MQ0+NB )*NB
RSIZEHEEVX = 4*N + MAX( 5*NN, NP0*MQ0 ) +
$ ICEIL( NEIG, NPROW*NPCOL )*NN
NNP = MAX( N, NPROW*NPCOL+1, 4 )
ISIZEHEEVX = 6*NNP
*
ICTXT = DESCA( CTXT_ )
ANB = PJLAENV( ICTXT, 3, 'PCHETTRD', 'L', 0, 0, 0, 0 )
SQNPC = INT( SQRT( REAL( NPROW*NPCOL ) ) )
NPS = MAX( NUMROC( N, 1, 0, 0, SQNPC ), 2*ANB )
NHETRD_LWOPT = 2*( ANB+1 )*( 4*NPS+2 ) + ( NPS+2 )*NPS
*
SIZEHEEVX = MAX( SIZEHEEVX, N+NHETRD_LWOPT )
*
SIZEHEEVD = SIZEHEEVX
RSIZEHEEVD = 7*N + 3*NP0*MQ0
ISIZEHEEVD = 7*N + 8*NPCOL + 2
SIZESUBTST = MAX( SIZETMS, SIZEQTQ, SIZECHK, SIZEHEEVX,
$ SIZEHEEVD ) + IPREPAD + IPOSTPAD
RSIZESUBTST = MAX( RSIZEHEEVX, RSIZEHEEVD, RSIZEQTQ, RSIZECHK ) +
$ IPREPAD + IPOSTPAD
ISIZESUBTST = MAX( ISIZEHEEVX, ISIZEHEEVD ) + IPREPAD + IPOSTPAD
*
* Allow room for A, COPYA and Z and WORK
*
SIZETST = 3*( LDA*NP+IPREPAD+IPOSTPAD ) + SIZESUBTST
*
* Room for DIAG, WIN, WNEW, GAP and RWORK
*
RSIZETST = 4*( N+IPREPAD+IPOSTPAD ) + RSIZESUBTST
*
* Allow room for IFAIL, ICLUSTR, and IWORK (all in PCHEEVX)
*
ISIZETST = N + 2*NPROW*NPCOL + 2*( IPREPAD+IPOSTPAD ) +
$ ISIZESUBTST
*
RETURN
END
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