Thank you very much for reporting. We're glad you have confirmed the fix. Best, Antonio On Tuesday, November 19, 2013 09:36:37 AM John Bray wrote:
I can confirm that 3.1rc2 fixes my problem
Thanks for your help.
John
On 9 November 2013 08:19, John Bray <[email protected]> wrote:
Happy to validate any fix when its ready, not only for this test case, but with our full DDT test suite.
John
On 8 November 2013 19:44, Antonio J. Peña <[email protected]> wrote:
Hi John,
You seem to describe a known bug:
https://trac.mpich.org/projects/mpich/ticket/1932
We've addressed it and the fix is waiting for review before going to the master branch. It would be nice if you could validate it once it's in master. May I contact you then to see if that addresses your problem?
Antonio
On Friday, November 08, 2013 05:43:29 PM John Bray wrote:
I've got some sample code that I'm using to test our debugger DDT. It works on openmpi and intelmpi, but with all the MPICH series from MPICH2 onwards to 3.1rc1, I get an error after MPI_FINALIZE. Our memory debugging library claims its at
SendqFreePool (dbginit.c:386) trying to free previously freed pointer
with a stacktrrace auditmpi
pmpi_finalize__
PMPI__finalize
MPIR_Call_finalize_callbacks
sendqFreePool (dbginit.c)
Run from a raw mpirun command outside DDT
*** glibc detected *** ./auditmpibad_f_debug.exe: double free or corruption (fasttop): 0x1032a5c8 *** *** glibc detected *** ./auditmpibad_f_debug.exe: double free or corruption (fasttop): 0x104da5c8 *** ======= Backtrace: ========= ======= Backtrace: ========= /lib/libc.so.6(+0xfe750e4)[0xf78e50e4] /home/jbray/prog/mpich/mpich-3.1rc1/rhel-6-ppc64_ibm/install/lib/libmpic h.so .11(+0x1a8b1c)[0xfec8b1c] /lib/libc.so.6(+0xfe750e4)[0xf76c50e4] /home/jbray/prog/mpich/mpich-3.1rc1/rhel-6-ppc64_ibm/install/lib/libmpic h.so .11(+0x1a8b1c)[0xfec8b1c] ... and so on
I've configured with
./configure --prefix=$PWD/install --enable-shared --enable-fast=all --enable-debuginfo
and compile with
mpif90 -o auditmpibad_f_debug.exe auditmpibad.F90 -O0 -g
Its works with the ALLTOALLV only called once.
Is this a bug or a misunderstanding on my part. The code is
program auditmpi
use mpi, only : &
MPI_COMM_WORLD, & MPI_REAL, & MPI_STATUS_SIZE, & MPI_BSEND_OVERHEAD, & MPI_SUM, & MPI_UNDEFINED
implicit none
integer, parameter :: repeats=2
integer :: rank, nproc,ierr,rpt real :: input(100000),output(100000) integer :: status (MPI_STATUS_SIZE) integer :: statuses (MPI_STATUS_SIZE,repeats) integer :: request logical :: odd integer, allocatable :: recvcounts(:),sendcounts(:),displs(:)
call MPI_INIT(ierr)
call MPI_COMM_RANK(MPI_COMM_WORLD, rank, ierr) call MPI_COMM_SIZE(MPI_COMM_WORLD, nproc, ierr)
if (rank == 0) print *,"auditmpi start"
if (mod(rank,2) == 0) then
odd=.false.
else
odd=.true.
end if
allocate (recvcounts(nproc)) recvcounts(:) = 100000/nproc
allocate (sendcounts(nproc)) sendcounts(:) = 100000/nproc
allocate (displs(nproc)) displs(:)=0 ! don't care if we overlap
if ( .NOT. odd) then
call MPI_IRECV(output,size(output),MPI_REAL,rank+1,1,MPI_COMM_WORLD,
request, ierr)
end if call MPI_BARRIER(MPI_COMM_WORLD,ierr) if (odd) then
call
MPI_IRSEND(input,size(input),MPI_REAL,rank-1,1,MPI_COMM_WORLD,request,ie rr) end if
call MPI_WAIT(request,status,ierr)
do rpt=1,2
call
MPI_ALLTOALLV(input,sendcounts,displs,MPI_REAL,output,recvcounts,displs, MPI _REAL,MPI_COMM_WORLD,ierr) end do
call MPI_BARRIER(MPI_COMM_WORLD,ierr)
deallocate (recvcounts) deallocate (sendcounts) deallocate (displs)
if (rank == 0) print *,"auditmpi finished"
call MPI_FINALIZE(ierr)
end program auditmpi
John _______________________________________________ discuss mailing list [email protected] To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/discuss
_______________________________________________ discuss mailing list [email protected] To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/discuss
_______________________________________________ discuss mailing list [email protected] To manage subscription options or unsubscribe: https://lists.mpich.org/mailman/listinfo/discuss