SAMsrc on Biowulf
Synthetic Aperture Magnetometry
The SAMsrc suite implements the latest advances in MEG source localization. Compared with the older CTF tools, there are many new features (some of them experimental). Filtering options, more flexible control over active, control, and noise covariance matrices, dual-state imaging, realistic head models, and several flavors of multipole source imaging are available.
Documentation
Important Notes
- Module Name: samsrc (see the modules page for more information)
Interactive job
Interactive jobs should be used for debugging, graphics, or applications that cannot be run as batch jobs.
Allocate an interactive session and run the program.
Sample session (user input in bold):
[user@biowulf]$ sinteractive salloc.exe: Pending job allocation 46116226 salloc.exe: job 46116226 queued and waiting for resources salloc.exe: job 46116226 has been allocated resources salloc.exe: Granted job allocation 46116226 salloc.exe: Waiting for resource configuration salloc.exe: Nodes cn3144 are ready for job [user@cn3144 ~]$ module load samsrc [user@cn3144 ~]$ sam_cov -r my_dataset -m settings.param [user@cn3144 ~]$ exit salloc.exe: Relinquishing job allocation 46116226 [user@biowulf ~]$
Batch job
Most jobs should be run as batch jobs.
Create a batch input file (e.g. samsrc.sh). For example:
#!/bin/bash set -e module load samsrc sam_cov -r my_dataset -m settings.param
Submit this job using the Slurm sbatch command.
sbatch [--cpus-per-task=#] [--mem=#] samsrc.sh
Swarm of Jobs
A swarm of jobs is an easy way to submit a set of independent commands requiring identical resources.
Create a swarmfile (e.g. samsrc.swarm). For example:
sam_cov -r dataset01 -m settings.param sam_cov -r dataset02 -m settings.param sam_cov -r dataset03 -m settings.param sam_cov -r dataset04 -m settings.param
Submit this job using the swarm command.
swarm -f samsrc.swarm [-g #] [-t #] --module samsrcwhere
-g # | Number of Gigabytes of memory required for each process (1 line in the swarm command file) |
-t # | Number of threads/CPUs required for each process (1 line in the swarm command file). |
--module samsrc | Loads the SAMsrc module for each subjob in the swarm |