Too much vmem?

[soichih]

We are running mriqc 0.14.2. Our jobs are killed often while QC-ing our anat/t1w due to too much vmem consumption. I can increase it, but doing so reduces the resources that we can run this App on.. I'd like to know if it's normal that it consumes so much vmem (>18GB)

=>> PBS: job killed: vmem 18826502144 exceeded limit 17179869184

The program called "fast" seems to be using a lot of memory - although other processes also uses a lot of memory.

[oesteban]

Hi @soichih sorry for the very slow turnaround. FAST is part of FSL, so I have very high expectations on #823 where we will stop using it.

But there are many additional measures we can transfer from fMRIPrep here to keep VMEM under control.

The problem roots from the design of memory handling in Python on Linux platforms. Basically, anything that gets imported at some point is kept along the process.

[oesteban]

Possibly duplicate of #536