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87 lines
2.9 KiB
Fortran
87 lines
2.9 KiB
Fortran
C
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C Parallel Sparse BLAS v2.0
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C (C) Copyright 2006 Salvatore Filippone University of Rome Tor Vergata
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C Alfredo Buttari University of Rome Tor Vergata
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C
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C Redistribution and use in source and binary forms, with or without
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C modification, are permitted provided that the following conditions
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C are met:
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C 1. Redistributions of source code must retain the above copyright
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C notice, this list of conditions and the following disclaimer.
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C 2. Redistributions in binary form must reproduce the above copyright
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C notice, this list of conditions, and the following disclaimer in the
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C documentation and/or other materials provided with the distribution.
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C 3. The name of the PSBLAS group or the names of its contributors may
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C not be used to endorse or promote products derived from this
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C software without specific written permission.
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C
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C THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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C ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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C TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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C PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PSBLAS GROUP OR ITS CONTRIBUTORS
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C BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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C CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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C SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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C INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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C CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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C ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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C POSSIBILITY OF SUCH DAMAGE.
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C
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C
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C
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C User defined function corresponding to an HPF BLOCK partition
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C
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SUBROUTINE PART_BLK2(IDX,N,NP,PV,NV)
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IMPLICIT NONE
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INTEGER IDX, N, NP
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INTEGER NV
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INTEGER PV(*)
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DOUBLE PRECISION DDIFF
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INTEGER IB1, IB2, IP, NB, NB1, NNB1
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NV = 1
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NB = N/NP
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NB1 = NB+1
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NNB1 = MOD(N,NP)
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IF (IDX .LE. (NNB1*NB1)) THEN
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PV(1) = (IDX - 1) / NB1
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ELSE
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IF (NB > 0) THEN
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IP = ( (IDX-NNB1*NB1) - 1)/NB
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PV(1) = NNB1 + IP
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ELSE
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write(0,*) 'Impossible ??? '
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PV(1) = NNB1
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ENDIF
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ENDIF
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RETURN
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END
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SUBROUTINE BLD_PARTBLK2(N,NP,IVG)
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INTEGER N, IVG(*),NP
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INTEGER IB1, IB2, IP, NB, NB1, NNB1, I
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NB = N/NP
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NB1 = NB+1
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NNB1 = MOD(N,NP)
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DO I=1,N
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IF (I .LE. (NNB1*NB1)) THEN
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IVG(I) = (I - 1) / NB1
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ELSE
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IF (NB > 0) THEN
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IP = ( (I-NNB1*NB1) - 1)/NB
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IVG(I) = NNB1 + IP
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ELSE
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write(0,*) 'Impossible ??? '
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IVG(I) = NNB1
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ENDIF
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ENDIF
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ENDDO
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END
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