Re: [OMPI users] Communications Problems when application distributed over, different nodes (Jeff Squyres)

2008-01-19 Thread Roland Albrecht
Hello It has indeed been a problem with the firewall. Thanks Best regards Roland Albrecht >Do you have the Linux firewall running on either of your machines, >perchance? This can either block random socket connections between >nodes (which Open MPI's TCP communication will use) or eat the >c

Re: [OMPI users] Communications Problems when application distributed over different nodes

2008-01-18 Thread Jeff Squyres
Do you have the Linux firewall running on either of your machines, perchance? This can either block random socket connections between nodes (which Open MPI's TCP communication will use) or eat the connection requests in a black-hole fashion such that the connections will timeout. On Ja

[OMPI users] Communications Problems when application distributed over different nodes

2008-01-16 Thread Roland Albrecht
Hello I'm running an FDTD programm (meep) using open-mpi on a mini-cluster consisting of 2 computers. Since the exchange of the mainbord on the node (with an identical one as before) I have a problem. I can't find the change in the configurations which is now causing the problen. Here's my p