Guillaume, what do you mean by (the intercommunicators are all negative"?
Cheers, Gilles On Fri, Jun 24, 2022 at 4:23 PM Guillaume De Nayer via users < users@lists.open-mpi.org> wrote: > Hi, > > I am new on this list. Let me introduce myself shortly: I am a > researcher in fluid mechanics. In this context I am using softwares > related on MPI. > > I am facing a problem: > - 3 programs forms a computational framework. Soft1 is a coupling > program, i.e., it opens an MPI port at the beginning. Soft2 and Soft3 > are clients, which connect to the coupling program using MPI_Comm_connect. > - After the start and the connections of Soft2 and Soft3 with Soft1, it > hangs. > > I started to debug this issue and as usual I found another issue (or > perhaps it is not an issue): > - The intercommunicators I get between Soft1-Soft2 and Soft1-Soft3 are > all negative (running on CentOS 7 with infiniband Mellanox OFED driver). > - Is there some standard about communicator? I don't find anything about > this topic. > - What is a valid communicator, intercommunicator? > > thx a lot > Regards > Guillaume > >
