Hello Rafo,

 

Thanks for this update, and for all the time and effort you put in over the break. I’m sorry to hear that you encountered such difficulties, but it sounds like a solution might be imminent.

 

While this is being resolved, I want to again strongly encourage everyone to start analyzing the existing output from pass2. The dst format has changed, several new collections have been added and the content of some other collections has changed, so there is a lot to be investigated. Enough run partitions have been reconstructed that sufficient statistics exist to find even subtle bugs in the software so please look at the data and report any results either back to these mailing lists or to slack.

 

More information on the pass2 reconstruction can be found here:

 

https://confluence.slac.stanford.edu/display/hpsg/Pass2

 

Norman

 

 

Hi all,

I multiple people were wondering about the status of the pass2, that was submitted just before Christmas brake.

During the brake significant amount of jobs are failed.
Main issue is the so called "No space left on disk" exception.

I did a ccpr I was in contact with computer center before and after the brakes.

Briefly about what happened:
The response was that auger scheduler is taking more jobs than the local disk of the node can take, and after
about 7-8 hours of running the local disk of the node becomes completely full, and therefore crashing all the jobs on that node.

Computer center advised that the problem is related to the so called "farm18" nodes, and before the brakes I sent jobs
to "farm16" nodes to avoid jobs to be run by any farm18 node, however during th Christmas brake, we got similar issue
with farm16 nodes too.
    In addition to this, number of nodes for some reason went offline (restarted) during the brake again causing a lot of jobs to fail.
Given the high rate of failures, I didn't submit additional jobs during brake time, until we will understand the failure reason.

After the brake I asked computer center about it, and they suggested instead of auger, to use slurm.
Now half of nodes are running on slurm, and in a near future all jobs will be submitted through slurm instead of auger.

Past week I was doing some tests on different nodes to check if the similar problem still exists.

It happened again in farm18 nodes, but for others it worked well for a single run.

I promised Maurik to present details about this on the coming Wednesday meeting.

Details of ccpr ar in the following link
https://misportal.jlab.org/mis/apps/ccpr/ccpr_user/ccpr_user_request_history.cfm?ccpr_number=249598

Rafo

Hello Rafo,

 

Can you please bring me up to speed on where we are with the Pass2 recon?

 

I just got back and have not yet gone through all of my email, so apologies if you've posted a progress report already.

 

Norman