Why do I get the error "qsub: Job exceeds queue resource limits.." when submitting a job?

The queuing system on Kraken does not allow memory requests with the #PBS -lmem= flag. Jobs requesting memory will be rejected with the error message shown above.

Memory on the Kraken is not shared between nodes. Each node has access to 16 GB of memory: 1 1/3 GB per core if all cores are used. Thus, memory is directly related to the number of processors requested. Because the memory is not shared, it does not make sense to request memory directly via PBS. (It is implicitly requested based on the #PBS -lsize=... request.)