Yes, I did. I replaced the info argument of MPI_Comm_spawn with MPI_INFO_NULL.
On Tue, Feb 3, 2015 at 5:54 PM, Ralph Castain <r...@open-mpi.org> wrote: > When running your comm_spawn code, did you remove the Info key code? You > wouldn't need to provide a hostfile or hosts any more, which is why it > should resolve that problem. > > I agree that providing either hostfile or host as an Info key will cause > the program to segfault - I'm woking on that issue. > > > On Tue, Feb 3, 2015 at 3:46 PM, Evan Samanas <evan.sama...@gmail.com> > wrote: > >> Setting these environment variables did indeed change the way mpirun maps >> things, and I didn't have to specify a hostfile. However, setting these >> for my MPI_Comm_spawn code still resulted in the same segmentation fault. >> >> Evan >> >> On Tue, Feb 3, 2015 at 10:09 AM, Ralph Castain <r...@open-mpi.org> wrote: >> >>> If you add the following to your environment, you should run on multiple >>> nodes: >>> >>> OMPI_MCA_rmaps_base_mapping_policy=node >>> OMPI_MCA_orte_default_hostfile=<your hostfile> >>> >>> The first tells OMPI to map-by node. The second passes in your default >>> hostfile so you don't need to specify it as an Info key. >>> >>> HTH >>> Ralph >>> >>> >>> On Tue, Feb 3, 2015 at 9:23 AM, Evan Samanas <evan.sama...@gmail.com> >>> wrote: >>> >>>> Hi Ralph, >>>> >>>> Good to know you've reproduced it. I was experiencing this using both >>>> the hostfile and host key. A simple comm_spawn was working for me as well, >>>> but it was only launching locally, and I'm pretty sure each node only has 4 >>>> slots given past behavior (the mpirun -np 8 example I gave in my first >>>> email launches on both hosts). Is there a way to specify the hosts I want >>>> to launch on without the hostfile or host key so I can test remote launch? >>>> >>>> And to the "hostname" response...no wonder it was hanging! I just >>>> constructed that as a basic example. In my real use I'm launching >>>> something that calls MPI_Init. >>>> >>>> Evan >>>> >>>> >>>> >>>> _______________________________________________ >>>> users mailing list >>>> us...@open-mpi.org >>>> Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/users >>>> Link to this post: >>>> http://www.open-mpi.org/community/lists/users/2015/02/26271.php >>>> >>> >>> >>> _______________________________________________ >>> users mailing list >>> us...@open-mpi.org >>> Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/users >>> Link to this post: >>> http://www.open-mpi.org/community/lists/users/2015/02/26272.php >>> >> >> >> _______________________________________________ >> users mailing list >> us...@open-mpi.org >> Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/users >> Link to this post: >> http://www.open-mpi.org/community/lists/users/2015/02/26281.php >> > > > _______________________________________________ > users mailing list > us...@open-mpi.org > Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/users > Link to this post: > http://www.open-mpi.org/community/lists/users/2015/02/26285.php >
