Dear openmpi users and developers, I encounter dead-lock problems with spawn processes in openmpi, as soon as more than one Send/Recv operation is done.
The test case I used has been extracted from the MPICH2 examples. It is a simple parent/child program. The original version (see attached file parent+child_from_MPICH2.tar.gz) works well under openmpi. I use commands in run.cmd to compile and execute this example. I have tried to add one more communication by duplicating the send/recv calls of the original MPICH2 source (see modified files in attached tar archive parent+child_with_more_send_recv.tar.gz) and get dead-lock problems when executing this modified version ... Can anybody reproduce this ? I am using openmpi version 1.3 on a Linux CentOS 5.2 (i386), with all updates of the distribution done.See also attached file ompi_info.txt.gz (result of the command ompi_info --all).
Thanks in advance for any hints, Best regards Lionel
parent+child_from_MPICH2.tar.gz
Description: GNU Zip compressed data
parent+child_with_more_send_recv.tar.gz
Description: GNU Zip compressed data
ompi_info.txt.gz
Description: GNU Zip compressed data
<<attachment: Lionel_Gamet.vcf>>