DVM environment variable?

[100405907]

DVM environment variable?

[rhc54]

Just to be clear: you have a DVM running that you started with just prte, and you have a set of procs that are being started via some separate method (and so they will appear as singletons) - correct? So the problem is to tell the singletons how to connect to the DVM?

The singletons will automatically look for a system server, so all you should need to do is start the DVM with the "system server" flag: prte --system-server.

I see you configured --with-slurm for some reason. If you are using Slurm to start the procs, that could be a problem as the procs may automatically connect to the Slurm daemon and not the DVM. Your only sure bet would be to add an option to your program that tries to circumvent that behavior, but I'd have to think about it for awhile and probably experiment a bit.

[100405907]

I'm starting my DVM with prte as follows:

prte --hostfile $HOME/gsotodos/conf/machines_mpi --report-uri $PRTEFILE --no-ready-msg &

I configured --with-slurm for other purposes, but as my application is running with Spark, I am starting my jobs with spark-submit. I tried to start my server with the flag --system-server but the clients still cannot connect with the server.

Is there any way to specify this configuration with environment variables or any way to launch my clients without mpiexec?

[rhc54]

When you say "it cannot connect", what are you seeing that tells you this? I just tested it and the clients connect just fine. The issue may be in what data they expected to be able to access.