On Tue, 2009-09-08 at 15:00 +0200, Thomas Ropars wrote: > Hi, > > I'm working on r21949 of the trunk. > > When I run on a single node with 4 processes this simple program calling > 2 times MPI_Comm_dup , the processes hang from time to time in the 2nd dup.
I can't reproduce this, how often does it fail? I've run it in a loop hundreds of times here and not had one hang. Off-topic I know but this is exactly the type of problem that padb is designed to help with, if you could get it to hang and then run "padb -axt" in another window on the same node and send along the output I'm sure it would be of help. Ashley, -- Ashley Pittman, Bath, UK. Padb - A parallel job inspection tool for cluster computing http://padb.pittman.org.uk
