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
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
|
SUBROUTINE PSLASIZESQP( DESCA, IPREPAD, IPOSTPAD, SIZEMQRLEFT,
$ SIZEMQRRIGHT, SIZEQRF, SIZETMS, SIZEQTQ,
$ SIZECHK, SIZESYEVX, ISIZESYEVX,
$ SIZESYEV, SIZESYEVD, ISIZESYEVD,
$ SIZESUBTST, ISIZESUBTST,
$ SIZETST, ISIZETST )
*
* -- ScaLAPACK routine (version 1.7) --
* University of Tennessee, Knoxville, Oak Ridge National Laboratory,
* and University of California, Berkeley.
* February 23, 2000
*
* .. Scalar Arguments ..
INTEGER IPOSTPAD, IPREPAD, ISIZESUBTST, ISIZESYEVX,
$ ISIZETST, SIZECHK, SIZEMQRLEFT, SIZEMQRRIGHT,
$ SIZEQRF, SIZEQTQ, SIZESUBTST, SIZESYEV,
$ SIZESYEVX, SIZETMS, SIZETST,
$ SIZESYEVD, ISIZESYEVD
* ..
* .. Array Arguments ..
INTEGER DESCA( * )
* ..
*
* Purpose
* =======
*
* PSLASIZESQP computes the amount of memory needed by
* various SEP test routines, as well as PSYEVX and PSSYEV
*
* Arguments
* =========
*
* DESCA (global input) INTEGER array dimension ( DLEN_ )
* Array descriptor as passed to PSSYEVX or PSSYEV
*
* SIZEMQRLEFT LWORK for the 1st PSORMQR call in PSLAGSY
*
* SIZEMQRRIGHT LWORK for the 2nd PSORMQR call in PSLAGSY
*
* SIZEQRF LWORK for PSGEQRF in PSLAGSY
*
* SIZETMS LWORK for PSLATMS
*
* SIZEQTQ LWORK for PSSEPQTQ (nexer complex)
*
* SIZECHK LWORK for PSSEPCHK
*
* SIZESYEVX LWORK for PSSYEVX
*
* ISIZESYEVX LIWORK for PSSYEVX
*
* SIZESYEV LWORK for PSSYEV
*
* SIZESYEVD LWORK for PSSYEVD
*
* ISIZESYEVD LIWORK for PSSYEVD
*
* SIZESUBTST LWORK for PSSUBTST
*
* ISIZESUBTST LIWORK for PSSUBTST
*
* SIZETST LWORK for PSTST
*
* ISIZETST LIWORK for PSTST
*
* .. 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 CONTEXTC, CSRC_A, IACOL, IAROW, ICOFFA, IROFFA,
$ LCM, LCMQ, LDA, LDC, MQ0, MYCOL, MYPCOLC,
$ MYPROWC, MYROW, N, NB, NEIG, NN, NNP, NP,
$ NPCOLC, NPROWC, NP0, NPCOL, NPROW, NQ, RSRC_A
* ..
* .. External Functions ..
INTEGER ICEIL, ILCM, INDXG2P, NUMROC, SL_GRIDRESHAPE
EXTERNAL ICEIL, ILCM, INDXG2P, NUMROC, SL_GRIDRESHAPE
* ..
* .. Executable Statements ..
*
* .. External Subroutines ..
EXTERNAL BLACS_GRIDINFO, BLACS_GRIDEXIT
* ..
* .. 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
*
* Allow room for the new context created in PSSYEV
*
CONTEXTC = SL_GRIDRESHAPE( DESCA( CTXT_ ), 0, 1, 1,
$ NPROW*NPCOL, 1 )
CALL BLACS_GRIDINFO( CONTEXTC, NPROWC, NPCOLC, MYPROWC,
$ MYPCOLC )
LDC = MAX( 1, NUMROC( N, NB, MYPROWC, 0, NPROW*NPCOL ) )
SIZESYEV = 5*N + MAX( 2*NP0 + MQ0 + NB*NN , 2*NN-2 ) + N*LDC
CALL BLACS_GRIDEXIT( CONTEXTC )
*
NP = NUMROC( N, NB, MYROW, IAROW, NPROW )
NQ = NUMROC( N, NB, MYCOL, IACOL, NPCOL )
NN = MAX( N, NB, 2 )
NNP = 3*N + MAX( NB*( NP+1 ), 3*NB )
SIZESYEVD = MAX( NNP, 1+6*N+2*NP*NQ ) + 2*N
ISIZESYEVD = 2+7*N+8*NPCOL
*
SIZESUBTST = MAX( SIZETMS, SIZEQTQ, SIZECHK, SIZESYEVX,
$ SIZEMQRLEFT, SIZEMQRRIGHT, SIZESYEV ) +
$ 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 PSSYEVX)
*
ISIZETST = N + 2*NPROW*NPCOL + 2*( IPREPAD+IPOSTPAD ) +
$ ISIZESUBTST
*
RETURN
END
|
