You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
68 lines
1.3 KiB
FortranFixed
68 lines
1.3 KiB
FortranFixed
20 years ago
|
C
|
||
|
|
C User defined function corresponding to an HPF BLOCK partition
|
||
|
|
C
|
||
|
|
SUBROUTINE PART_BLOCK(GLOBAL_INDX,N,NP,PV,NV)
|
||
|
|
|
||
|
|
IMPLICIT NONE
|
||
|
|
|
||
|
|
INTEGER GLOBAL_INDX, N, NP
|
||
|
|
INTEGER NV
|
||
|
|
INTEGER PV(*)
|
||
|
|
INTEGER DIM_BLOCK
|
||
|
|
DOUBLE PRECISION DDIFF
|
||
|
|
INTEGER IB1, IB2, IPV
|
||
|
|
|
||
|
|
double precision PC
|
||
|
|
PARAMETER (PC=0.0D0)
|
||
|
|
|
||
|
|
DIM_BLOCK = (N + NP - 1)/NP
|
||
|
|
NV = 1
|
||
|
|
PV(NV) = (GLOBAL_INDX - 1) / DIM_BLOCK
|
||
|
|
|
||
|
|
IPV = PV(1)
|
||
|
|
IB1 = IPV * DIM_BLOCK + 1
|
||
|
|
IB2 = (IPV+1) * DIM_BLOCK
|
||
|
|
|
||
|
|
DDIFF = DBLE(ABS(GLOBAL_INDX-IB1))/DBLE(DIM_BLOCK)
|
||
|
|
IF (DDIFF .lt. PC/2) THEN
|
||
|
|
C
|
||
|
|
C Overlap at the beginning of a block, with the previous proc
|
||
|
|
C
|
||
|
|
IF (IPV.gt.0) THEN
|
||
|
|
NV = NV + 1
|
||
|
|
PV(NV) = IPV - 1
|
||
|
|
ENDIF
|
||
|
|
ENDIF
|
||
|
|
|
||
|
|
DDIFF = DBLE(ABS(GLOBAL_INDX-IB2))/DBLE(DIM_BLOCK)
|
||
|
|
IF (DDIFF .lt. PC/2) THEN
|
||
|
|
C
|
||
|
|
C Overlap at the end of a block, with the next proc
|
||
|
|
C
|
||
|
|
IF (IPV.lt.(NP-1)) THEN
|
||
|
|
NV = NV + 1
|
||
|
|
PV(NV) = IPV + 1
|
||
|
|
ENDIF
|
||
|
|
ENDIF
|
||
|
|
|
||
|
|
RETURN
|
||
|
|
END
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
SUBROUTINE BLD_PARTBLOCK(N,NP,IVG)
|
||
|
|
|
||
|
|
INTEGER N,NP,IVG(*)
|
||
|
|
|
||
|
|
INTEGER DIM_BLOCK,I
|
||
|
|
|
||
|
|
|
||
|
|
DIM_BLOCK = (N + NP - 1)/NP
|
||
|
|
DO I=1,N
|
||
|
|
IVG(I) = (I - 1) / DIM_BLOCK
|
||
|
|
ENDDO
|
||
|
|
|
||
|
|
END
|
||
|
|
|
||
|
|
|