Re: [OMPI users] Possible Memcpy bug in MPI_Comm_split

2007-08-17 Thread Lisandro Dalcin
On 8/16/07, George Bosilca wrote: > Well, finally someone discovered it :) I know about this problem for > quite a while now, it pop up during our own valgrind test of the > collective module in Open MPI. However, it never create any problems > in the applications, at least not as far as I know. T

Re: [OMPI users] Possible Memcpy bug in MPI_Comm_split

2007-08-16 Thread George Bosilca
Well, finally someone discovered it :) I know about this problem for quite a while now, it pop up during our own valgrind test of the collective module in Open MPI. However, it never create any problems in the applications, at least not as far as I know. That's why I'm reticent to replace t

[OMPI users] Possible Memcpy bug in MPI_Comm_split

2007-08-16 Thread Allen Barnett
Hi: I was running my OpenMPI 1.2.3 application under Valgrind and I observed this error message: ==14322== Source and destination overlap in memcpy(0x41F5BD0, 0x41F5BD8, 16) ==14322==at 0x49070AD: memcpy (mc_replace_strmem.c:116) ==14322==by 0x4A45CF4: ompi_ddt_copy_content_same_ddt (in /h