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SUBROUTINE CTIMTB( LINE, NN, NVAL, NK, KVAL, NNS, NSVAL, NLDA,
$ LDAVAL, TIMMIN, A, B, RESLTS, LDR1, LDR2, LDR3,
$ NOUT )
*
* -- LAPACK timing routine (version 3.0) --
* Univ. of Tennessee, Univ. of California Berkeley, NAG Ltd.,
* Courant Institute, Argonne National Lab, and Rice University
* March 31, 1993
*
* .. Scalar Arguments ..
CHARACTER*80 LINE
INTEGER LDR1, LDR2, LDR3, NK, NLDA, NN, NNS, NOUT
REAL TIMMIN
* ..
* .. Array Arguments ..
INTEGER KVAL( * ), LDAVAL( * ), NSVAL( * ), NVAL( * )
REAL RESLTS( LDR1, LDR2, LDR3, * )
COMPLEX A( * ), B( * )
* ..
*
* Purpose
* =======
*
* CTIMTB times CTBTRS.
*
* Arguments
* =========
*
* LINE (input) CHARACTER*80
* The input line that requested this routine. The first six
* characters contain either the name of a subroutine or a
* generic path name. The remaining characters may be used to
* specify the individual routines to be timed. See ATIMIN for
* a full description of the format of the input line.
*
* NN (input) INTEGER
* The number of values of N contained in the vector NVAL.
*
* NVAL (input) INTEGER array, dimension (NN)
* The values of the matrix size N.
*
* NK (input) INTEGER
* The number of values of K contained in the vector KVAL.
*
* KVAL (input) INTEGER array, dimension (NK)
* The values of the band width K.
*
* NNS (input) INTEGER
* The number of values of NRHS contained in the vector NSVAL.
*
* NSVAL (input) INTEGER array, dimension (NNS)
* The values of the number of right hand sides NRHS.
*
* NLDA (input) INTEGER
* The number of values of LDA contained in the vector LDAVAL.
*
* LDAVAL (input) INTEGER array, dimension (NLDA)
* The values of the leading dimension of the array A.
*
* TIMMIN (input) REAL
* The minimum time a subroutine will be timed.
*
* A (workspace) COMPLEX array, dimension (LDAMAX*NMAX)
* where LDAMAX and NMAX are the maximum values permitted
* for LDA and N.
*
* B (workspace) COMPLEX array, dimension (LDAMAX*NMAX)
*
* RESLTS (output) REAL array, dimension
* (LDR1,LDR2,LDR3,NSUBS)
* The timing results for each subroutine over the relevant
* values of N, NB, and LDA.
*
* LDR1 (input) INTEGER
* The first dimension of RESLTS. LDR1 >= max(1,NNB).
*
* LDR2 (input) INTEGER
* The second dimension of RESLTS. LDR2 >= max(1,NN).
*
* LDR3 (input) INTEGER
* The third dimension of RESLTS. LDR3 >= max(1,2*NLDA).
*
* NOUT (input) INTEGER
* The unit number for output.
*
* =====================================================================
*
* .. Parameters ..
INTEGER NSUBS
PARAMETER ( NSUBS = 1 )
* ..
* .. Local Scalars ..
CHARACTER UPLO
CHARACTER*3 PATH
CHARACTER*6 CNAME
INTEGER I, I3, IC, ICL, IK, ILDA, IN, INFO, ISUB,
$ IUPLO, K, LDA, LDB, MAT, N, NRHS
REAL OPS, S1, S2, TIME, UNTIME
* ..
* .. Local Arrays ..
LOGICAL TIMSUB( NSUBS )
CHARACTER UPLOS( 2 )
CHARACTER*6 SUBNAM( NSUBS )
* ..
* .. External Functions ..
LOGICAL LSAME
REAL SECOND, SMFLOP, SOPLA
EXTERNAL LSAME, SECOND, SMFLOP, SOPLA
* ..
* .. External Subroutines ..
EXTERNAL ATIMCK, ATIMIN, CTBTRS, CTIMMG, SPRTBL
* ..
* .. Intrinsic Functions ..
INTRINSIC MAX, MIN, REAL
* ..
* .. Data statements ..
DATA SUBNAM / 'CTBTRS' /
DATA UPLOS / 'U', 'L' /
* ..
* .. Executable Statements ..
*
* Extract the timing request from the input line.
*
PATH( 1: 1 ) = 'Complex precision'
PATH( 2: 3 ) = 'TB'
CALL ATIMIN( PATH, LINE, NSUBS, SUBNAM, TIMSUB, NOUT, INFO )
IF( INFO.NE.0 )
$ GO TO 110
*
* Check that K+1 <= LDA for the input values.
*
CNAME = LINE( 1: 6 )
CALL ATIMCK( 0, CNAME, NK, KVAL, NLDA, LDAVAL, NOUT, INFO )
IF( INFO.GT.0 ) THEN
WRITE( NOUT, FMT = 9999 )CNAME
GO TO 110
END IF
*
* Do for each value of N:
*
DO 100 IN = 1, NN
N = NVAL( IN )
LDB = N
*
* Do first for UPLO = 'U', then for UPLO = 'L'
*
DO 60 IUPLO = 1, 2
UPLO = UPLOS( IUPLO )
IF( LSAME( UPLO, 'U' ) ) THEN
MAT = 13
ELSE
MAT = -13
END IF
*
* Do for each value of LDA:
*
DO 50 ILDA = 1, NLDA
LDA = LDAVAL( ILDA )
I3 = ( IUPLO-1 )*NLDA + ILDA
*
* Do for each value of the band width K:
*
DO 40 IK = 1, NK
K = KVAL( IK )
K = MAX( 0, MIN( K, N-1 ) )
*
* Time CTBTRS
*
IF( TIMSUB( 1 ) ) THEN
CALL CTIMMG( MAT, N, N, A, LDA, K, K )
DO 30 I = 1, NNS
NRHS = NSVAL( I )
CALL CTIMMG( 0, N, NRHS, B, LDB, 0, 0 )
IC = 0
S1 = SECOND( )
10 CONTINUE
CALL CTBTRS( UPLO, 'No transpose', 'Non-unit',
$ N, K, NRHS, A, LDA, B, LDB, INFO )
S2 = SECOND( )
TIME = S2 - S1
IC = IC + 1
IF( TIME.LT.TIMMIN ) THEN
CALL CTIMMG( 0, N, NRHS, B, LDB, 0, 0 )
GO TO 10
END IF
*
* Subtract the time used in CTIMMG.
*
ICL = 1
S1 = SECOND( )
20 CONTINUE
S2 = SECOND( )
UNTIME = S2 - S1
ICL = ICL + 1
IF( ICL.LE.IC ) THEN
CALL CTIMMG( 0, N, NRHS, B, LDB, 0, 0 )
GO TO 20
END IF
*
TIME = ( TIME-UNTIME ) / REAL( IC )
OPS = SOPLA( 'CTBTRS', N, NRHS, K, K, 0 )
RESLTS( I, IK, I3, 1 ) = SMFLOP( OPS, TIME,
$ INFO )
30 CONTINUE
END IF
40 CONTINUE
50 CONTINUE
60 CONTINUE
*
* Print a table of results.
*
DO 90 ISUB = 1, NSUBS
IF( .NOT.TIMSUB( ISUB ) )
$ GO TO 90
*
* Print header for routine names.
*
IF( IN.EQ.1 .OR. CNAME.EQ.'CTB ' ) THEN
WRITE( NOUT, FMT = 9998 )SUBNAM( ISUB )
IF( NLDA.EQ.1 ) THEN
WRITE( NOUT, FMT = 9997 )LDAVAL( 1 )
ELSE
DO 70 I = 1, NLDA
WRITE( NOUT, FMT = 9996 )I, LDAVAL( I )
70 CONTINUE
END IF
END IF
*
DO 80 IUPLO = 1, 2
WRITE( NOUT, FMT = 9995 )SUBNAM( ISUB ), N,
$ UPLOS( IUPLO )
I3 = ( IUPLO-1 )*NLDA + 1
IF( ISUB.EQ.1 ) THEN
CALL SPRTBL( 'NRHS', 'K', NNS, NSVAL, NK, KVAL, NLDA,
$ RESLTS( 1, 1, I3, 1 ), LDR1, LDR2, NOUT )
END IF
80 CONTINUE
90 CONTINUE
100 CONTINUE
*
110 CONTINUE
9999 FORMAT( 1X, A6, ' timing run not attempted', / )
9998 FORMAT( / ' *** Speed of ', A6, ' in megaflops ***' )
9997 FORMAT( 5X, 'with LDA = ', I5 )
9996 FORMAT( 5X, 'line ', I2, ' with LDA = ', I5 )
9995 FORMAT( / 5X, A6, ' with M =', I6, ', UPLO = ''', A1, '''', / )
RETURN
*
* End of CTIMTB
*
END
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