Memory issues

[TimCraigCGPS]

Hi,
I am finding that after I run a job it seems to be running out of memory after 1-2 days. I don't think that this is a problem with the machine memory not being enough to run at all, since it's able to go through ~ 21-23 trajectories in the trajectory_stats.csv file. I'm also able to run the PDL1 example but get a similar error after some time if I try to get 200 binders (66 trajectories). Given a previous comment that we might need to run 200-300 trajectories for "easy" targets and 2000-3500 for harder ones I'm wondering what might be causing this.

I'm getting an error that looks like this:
<Signals.SIGKILL: 9>.; 2341581)

I'm wondering if the best practice might be to do something like shut down bindcraft and then restart it every 12 hours or so?

[martinpacesa]

This is interesting, how much RAM are you allocating?

[TimCraigCGPS]

I'm using an A100, so 80GB (@-task(queue='gpu', executor_config={'--mem-per-gpu': '80G', '-G': '1'})). I'm not sure that we are specifying an amount of RAM.

Should we be using os.environ["XLA_PYTHON_CLIENT_MEM_FRACTION"] = 2 or higher? (found this in another thread)

[martinpacesa]

I meant computer RAM, the code compilation and PyRosetta still require a decent memory to run, we normally use 32 Gb

[agitter]

I had one run with untrimmed EGRF 6aru as the target and an 80GB A100 that was held in our shared computing system because it exceeded the 100GB RAM I requested. It completed when I reran it and requested 200GB RAM.

[martinpacesa]

How big was that? I so far never needed that much RAM

[agitter]

Chain A of 6aru is 622 residues. I tried lengths of 50-250 with hotspots and default settings.

Our system uses cgroups to monitor and enforce resource sharing, and this is part of the error message I got

Job has gone over cgroup memory limit of 102400 megabytes. Last measured usage: 261 megabytes.  Consider resubmitting with a higher request_memory.

I can't confirm if that was accurate memory usage because it was running in a batch setting that I wasn't monitoring.

[martinpacesa]

Okay, thanks a lot for the report. I will keep an eye on the memory usage settings over the coming weeks, but this should not happen.