2D classification error SSD Path

Troubleshooting
1

Hello,
I get the following error when trying to run 2D classification in cryosparc on a computing cluster.

Traceback (most recent call last):
File “cryosparc_master/cryosparc_compute/run.py”, line 95, in cryosparc_master.cryosparc_compute.run.main
File “cryosparc_master/cryosparc_compute/jobs/class2D/newrun.py”, line 73, in cryosparc_master.cryosparc_compute.jobs.class2D.newrun.run_class_2D
File “/blue/rmckenna/apps/cryosparc/cryosparc_worker/cryosparc_compute/particles.py”, line 120, in read_blobs
u_blob_paths = cache_run(u_rel_paths)
File “/blue/rmckenna/apps/cryosparc/cryosparc_worker/cryosparc_compute/jobs/cache.py”, line 106, in download_and_return_cache_paths
ssd_cache_path = get_ssd_cache_path(target)
File “/blue/rmckenna/apps/cryosparc/cryosparc_worker/cryosparc_compute/jobs/cache.py”, line 321, in get_ssd_cache_path
assert ‘CRYOSPARC_SSD_PATH’ in os.environ, “SSD path was not specified in worker configuration nor environment variable.”
AssertionError: SSD path was not specified in worker configuration nor environment variable.

Any assistance would be greatly appreciated.

2

Turn off caching of the job, that should not cause the error. Then ask whoever installed CryoSPARC if they configured the SSD cache…?

3

Your suggestion worked. Thank you.

4

It’s not a fix, just a workaround - but whoever set up CryoSPARC will need to adjust the settings (configure SSD cache if necessary)…

5

And you should really ask your responsible administrator. Particle caching saves time and is highly recommended.

1 Like
6

Well, it depends on your setup; if using SSD RAID for processing directory, a cache isn’t needed… :wink:

1 Like
7

You’re right. But the admin will know - so the OP should contact the responsible person.