1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
|
*
*
SUBROUTINE PDLASIZESEP( DESCA, IPREPAD, IPOSTPAD, SIZEMQRLEFT,
$ SIZEMQRRIGHT, SIZEQRF, SIZETMS, SIZEQTQ,
$ SIZECHK, SIZESYEVX, ISIZESYEVX,
$ SIZESUBTST, ISIZESUBTST, SIZETST,
$ 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, ISIZESUBTST, ISIZESYEVX,
$ ISIZETST, SIZECHK, SIZEMQRLEFT, SIZEMQRRIGHT,
$ SIZEQRF, SIZEQTQ, SIZESUBTST, SIZESYEVX,
$ SIZETMS, SIZETST
* ..
* .. Array Arguments ..
INTEGER DESCA( * )
* ..
*
* Purpose
* =======
*
* PDLASIZESEP computes the amount of memory needed by
* various SEP test routines, as well as SYEVX itself
*
* Arguments
* =========
*
* DESCA (global input) INTEGER array dimension ( DLEN_ )
* Array descriptor as passed to PDSYEVX
*
* SIZEMQRLEFT LWORK for the 1st PDORMQR call in PDLAGSY
*
* SIZEMQRRIGHT LWORK for the 2nd PDORMQR call in PDLAGSY
*
* SIZEQRF LWORK for PDGEQRF in PDLAGSY
*
* SIZETMS LWORK for PDLATMS
*
* SIZEQTQ LWORK for PDSEPQTQ (nexer complex)
*
* SIZECHK LWORK for PDSEPCHK
*
* SIZESYEVX LWORK for PDSYEVX
*
* ISIZESYEVX LIWORK for PDSYEVX
*
* SIZESUBTST LWORK for PDSUBTST
*
* ISIZESUBTST LIWORK for PDSUBTST
*
* SIZETST LWORK for PDTST
*
* ISIZETST LIWORK for PDTST
*
* .. 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 CSRC_A, IACOL, IAROW, ICOFFA, IROFFA, LCM,
$ LCMQ, LDA, MQ0, MYCOL, MYROW, N, NB, NEIG, NN,
$ NNP, NP, NP0, NPCOL, NPROW, NQ, RSRC_A
* ..
* .. External Functions ..
INTEGER ICEIL, ILCM, INDXG2P, NUMROC
EXTERNAL ICEIL, ILCM, INDXG2P, NUMROC
* ..
** .. Executable Statements ..
* This is just to keep ftnchek happy
* .. External Subroutines ..
EXTERNAL BLACS_GRIDINFO
* ..
* .. Intrinsic Functions ..
INTRINSIC MAX
* ..
* .. 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 = 2 + MAX( DESCA( MB_ ), 2 )*( 2*NP0+MQ0 )
SIZECHK = 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 )
SIZESYEVX = 5*N + MAX( 5*NN, NP0*MQ0+2*NB*NB ) +
$ ICEIL( NEIG, NPROW*NPCOL )*NN
NNP = MAX( N, NPROW*NPCOL+1, 4 )
ISIZESYEVX = 6*NNP
*
SIZESUBTST = MAX( SIZETMS, SIZEQTQ, SIZECHK, SIZESYEVX ) +
$ IPREPAD + IPOSTPAD
ISIZESUBTST = ISIZESYEVX + IPREPAD + IPOSTPAD
*
*
* Allow room for A, COPYA and Z and DIAG, WIN, WNEW, GAP, WORK
*
SIZETST = 3*( LDA*NP+IPREPAD+IPOSTPAD ) +
$ 4*( N+IPREPAD+IPOSTPAD ) + SIZESUBTST
*
* Allow room for IFAIL, ICLUSTR, and IWORK (all in PDSYEVX)
*
ISIZETST = N + 2*NPROW*NPCOL + 2*( IPREPAD+IPOSTPAD ) +
$ ISIZESUBTST
*
RETURN
END
|
