Re: [OMPI devel] mpirun alternative

2021-03-05 Thread George Bosilca via devel
Gabriel, You should be able to. Here are at least 2 different ways of doing this. 1. Purely MPI. Start singletons (or smaller groups), and connect via sockets using MPI_Comm_join. You can setup your own DNS-like service, with the goal of having the independent MPI jobs leave a trace there, such

Re: [OMPI devel] mpirun alternative

2021-03-05 Thread Ralph Castain via devel
I'm afraid that won't work - there is no way for the job to "self assemble". One could create a way to do it, but it would take some significant coding in the guts of OMPI to get there. On Mar 5, 2021, at 9:40 AM, Gabriel Tanase via devel mailto:devel@lists.open-mpi.org> > wrote: Hi all, I

[OMPI devel] mpirun alternative

2021-03-05 Thread Gabriel Tanase via devel
Hi all, I decided to use mpi as the messaging layer for a multihost database. However within my org I faced very strong opposition to allow passwordless ssh or rsh. For security reasons we want to minimize the opportunities to execute arbitrary codes on the db clusters. I don;t want to run other