Hi, I have some problem with LAM/MPI 7.1.1 in dumping
large arrays to a binary file while the same works
with 7.0.2 perfectly. To demenstrate the problem, try
this tiny toy code:
program largefile
implicit none
include "mpif.h"
integer,parameter::recordunit=11,N=256
real(8),allocatable::sepRecord(:)
allocate(sepRecord(2*N**3))
sepRecord=1d0
Open (UNIT=recordunit, FILE="largefile.dat",
STATUS="UNKNOWN", &
form="unformatted",ACTION="WRITE")
write(unit=recordunit) sepRecord
close(recordunit)
deallocate(sepRecord)
end program
For the LAM/MPI 7.0.2, it writes to a 256MB file in
seconds while using versin 7.1.1, the code hangs and
takes all the CPU but nothing is written.
Is this a bug in the new version?
Thanks.
Shi
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