upper limit of frealign_mp version

Submitted by Lingyun on Tue, 2013-08-20 08:25

Forums

Frealign

Hi,
Is there anyone who has ever seen the problem "Number of parallel processors too large,Resetting IMP =12"? The programme has detected 24 CPUs, which echoes "Parallel Processing: NCPUS=24" in the beginning. The version I used is 8.11(the latest version of helical reconstruction). And I was trying to run it on our DELL T7600 workstation.

Axel Tue, 2013-08-20 08:34

Hi,

I haven't run into this problem in the past, largely because setting the number of processors in multi-processor reconstruction to 24 is unlikely to yield an improvement in processing time that is worth the use of extra resources.

Axel

niko Tue, 2013-08-20 10:10

Frealign's parallelization becomes very inefficient if too many CPUs are used together with small particle sizes. The message is only a warning and Frealign should run without problems.