Hey Edgar -- Could this have anything to do with your recent fixes?
On May 12, 2009, at 8:30 AM, Anton Starikov wrote:
hostfile from torque PBS_NODEFILE (OMPI is compilled with torque support) It happens with or without rankfile. Started with mpirun -np 16 ./somecode mca parameters: btl = self,sm,openib mpi_maffinity_alone = 1 rmaps_base_no_oversubscribe = 1 (rmaps_base_no_oversubscribe = 0 doesn't change it) I tested with both: "btl=self,sm" on 16c-core nodes and "btl=self,sm,openib" on 8x dual-core nodes , result is the same. It looks like it always occurs exactly at the same point in the execution, not at the beginning, it is not first MPI_Comm_dup in the code. I can't say too much about particular piece of the code, where it is happening, because it is in the 3rd-party library (MUMPS). When error occurs, MPI_Comm_dup in every task deals with single-task communicator (MPI_Comm_split of initial MPI_Comm_world for 16 processes into 16 groups, 1 process per group). And I can guess that before this error, MPI_Comm_dup is called something like 100 of times by the same piece of code on the same communicators without any problems. I can say that it used to work correctly with all previous versions of openmpi we used (1.2.8-1.3.2 and some earlier versions). It also works correctly on other platforms/MPI implementations. All environmental variables (PATH, LD_LIBRARY_PATH) are correct. I recompiled code and 3rd-party libraries with this version of OMPI. <config.log.gz><ompi-info.txt.gz><ATT9775601.txt><ATT9775603.txt>
-- Jeff Squyres Cisco Systems
