ScaLAPACK 2.1  2.1
ScaLAPACK: Scalable Linear Algebra PACKage
sgesd2d_.c
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1 #include "Bdef.h"
2 
3 #if (INTFACE == C_CALL)
4 void Csgesd2d(int ConTxt, int m, int n, float *A, int lda,
5  int rdest, int cdest)
6 #else
7 F_VOID_FUNC sgesd2d_(int *ConTxt, int *m, int *n, float *A, int *lda,
8  int *rdest, int *cdest)
9 #endif
10 /*
11  * -- V1.1 BLACS routine --
12  * University of Tennessee, May 1, 1996
13  * Written by Clint Whaley.
14  *
15  * Purpose
16  * =======
17  * Locally-blocking point-to-point general real send.
18  *
19  * Arguments
20  * =========
21  *
22  * ConTxt (input) Ptr to int
23  * Index into MyConTxts00 (my contexts array).
24  *
25  * M (input) Ptr to int
26  * The number of rows of the matrix A. M >= 0.
27  *
28  * N (input) Ptr to int
29  * The number of columns of the matrix A. N >= 0.
30  *
31  * A (input) Ptr to real two dimensional array
32  * The m by n matrix A. Fortran77 (column-major) storage
33  * assumed.
34  *
35  * LDA (input) Ptr to int
36  * The leading dimension of the array A. LDA >= M.
37  *
38  * RDEST (input) Ptr to int
39  * The process row of the destination process.
40  *
41  * CDEST (input) Ptr to int
42  * The process column of the destination process.
43  *
44  * ------------------------------------------------------------------------
45  */
46 {
47  void BI_ArgCheck(int, int, char *, char, char, char, int, int, int, int,
48  int *, int *);
49  MPI_Datatype BI_GetMpiGeType(BLACSCONTEXT *, int, int, int,
50  MPI_Datatype, int *);
51  BLACBUFF *BI_Pack(BLACSCONTEXT *, BVOID *, BLACBUFF *, MPI_Datatype);
52  void BI_Ssend(BLACSCONTEXT *, int, int, BLACBUFF *);
53  void BI_Asend(BLACSCONTEXT *, int, int, BLACBUFF *);
54  void BI_UpdateBuffs(BLACBUFF *);
55  BLACBUFF *BI_GetBuff(int);
56  int BI_BuffIsFree(BLACBUFF *, int);
57 
58  int dest, tlda, ierr;
59  BLACBUFF *bp;
60  BLACSCONTEXT *ctxt;
61  MPI_Datatype MatTyp;
63 
64  MGetConTxt(Mpval(ConTxt), ctxt);
65 #if (BlacsDebugLvl > 0)
66  BI_ArgCheck(Mpval(ConTxt), RT_SD, "SGESD2D", 'a', 'u', 'u', Mpval(m),
67  Mpval(n), Mpval(lda), 1, Mpaddress(rdest), Mpaddress(cdest));
68 #endif
69  if (Mpval(lda) < Mpval(m)) tlda = Mpval(m);
70  else tlda = Mpval(lda);
71  dest = Mvkpnum(ctxt, Mpval(rdest), Mpval(cdest));
72  ctxt->scp = &ctxt->pscp;
73 
74  MatTyp = BI_GetMpiGeType(ctxt, Mpval(m), Mpval(n), tlda,
75  MPI_FLOAT, &BI_AuxBuff.N);
76 #ifdef SndIsLocBlk
77  BI_AuxBuff.Buff = (char *) A;
78  BI_AuxBuff.dtype = MatTyp;
79  BI_Ssend(ctxt, dest, PT2PTID, &BI_AuxBuff);
80 #else
81  bp = BI_Pack(ctxt, (BVOID *) A, NULL, MatTyp);
82  BI_Asend(ctxt, Mkpnum(ctxt, Mpval(rdest), Mpval(cdest)), PT2PTID, bp);
83 #endif
84  ierr=BI_MPI_TYPE_FREE(&MatTyp);
85 
86 /*
87  * Having started the async send, update the buffers (reform links, check if
88  * active buffers have become inactive, etc.)
89  */
90 #ifdef SndIsLocBlk
91  if (BI_ActiveQ) BI_UpdateBuffs(NULL);
92 #else
93  BI_UpdateBuffs(bp);
94 #endif
95 } /* end of sgesd2d */
BI_Pack
BLACBUFF * BI_Pack(BLACSCONTEXT *ctxt, BVOID *A, BLACBUFF *bp, MPI_Datatype Dtype)
Definition: BI_Pack.c:2
BI_GetBuff
BLACBUFF * BI_GetBuff(int length)
Definition: BI_GetBuff.c:36
bLaCbUfF::Buff
char * Buff
Definition: Bdef.h:56
BI_Asend
void BI_Asend(BLACSCONTEXT *ctxt, int dest, int msgid, BLACBUFF *bp)
Definition: BI_Asend.c:3
Csgesd2d
void Csgesd2d()
BI_Ssend
void BI_Ssend(BLACSCONTEXT *ctxt, int dest, int msgid, BLACBUFF *bp)
Definition: BI_Ssend.c:3
MGetConTxt
#define MGetConTxt(Context, ctxtptr)
Definition: Bdef.h:200
bLaCsCoNtExT::pscp
BLACSSCOPE pscp
Definition: Bdef.h:25
BVOID
#define BVOID
Definition: Bdef.h:136
bLaCbUfF
Definition: Bdef.h:54
BI_ActiveQ
BLACBUFF * BI_ActiveQ
Definition: BI_GlobalVars.c:9
RT_SD
#define RT_SD
Definition: Bdef.h:105
sgesd2d_
F_VOID_FUNC sgesd2d_(int *ConTxt, int *m, int *n, float *A, int *lda, int *rdest, int *cdest)
Definition: sgesd2d_.c:7
bLaCbUfF::N
int N
Definition: Bdef.h:61
Mpval
#define Mpval(para)
Definition: Bdef.h:261
bLaCsCoNtExT
Definition: Bdef.h:23
Mkpnum
#define Mkpnum(ctxt, prow, pcol)
Definition: Bdef.h:173
Mpaddress
#define Mpaddress(para)
Definition: Bdef.h:262
F_VOID_FUNC
#define F_VOID_FUNC
Definition: Bdef.h:232
bLaCsCoNtExT::scp
BLACSSCOPE * scp
Definition: Bdef.h:26
Bdef.h
BI_GetMpiGeType
MPI_Datatype BI_GetMpiGeType(BLACSCONTEXT *ctxt, int m, int n, int lda, MPI_Datatype Dtype, int *N)
Definition: BI_GetMpiGeType.c:2
PT2PTID
#define PT2PTID
Definition: Bdef.h:77
BI_AuxBuff
BLACBUFF BI_AuxBuff
Definition: BI_GlobalVars.c:10
bLaCbUfF::dtype
MPI_Datatype dtype
Definition: Bdef.h:60
BI_ArgCheck
void BI_ArgCheck(int ConTxt, int RoutType, char *routine, char scope, char uplo, char diag, int m, int n, int lda, int nprocs, int *prows, int *pcols)
Definition: BI_ArgCheck.c:4
BI_MPI_TYPE_FREE
#define BI_MPI_TYPE_FREE(t)
Definition: Bdef.h:305
Mvkpnum
#define Mvkpnum(ctxt, prow, pcol)
Definition: Bdef.h:174
BI_UpdateBuffs
void BI_UpdateBuffs(BLACBUFF *Newbp)
Definition: BI_UpdateBuffs.c:3
BI_BuffIsFree
int BI_BuffIsFree(BLACBUFF *bp, int Wait)
Definition: BI_BuffIsFree.c:3