Submitting many jobs generates error qsub: Invalid credential

[renozao]

When submitting many jobs at once (~ 200) to a TORQUE cluster, I often get the following error:

Error in submitJobs(reg, resources = list(nodes = 1)) :
 Fatal error occured: 101. qsub produced exit code 173; output qsub: Invalid credential
Calls: submitJobs ... tryCatch -> tryCatchList -> tryCatchOne -> <Anonymous>

I think this is due to the too many consecutive qsub calls made too quickly one after the other, which somehow flood the queuing system. A work around for me is to re-submit the jobs that were not submitted (loop or manually), until all jobs are effectively submitted.