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All times are seconds-per-event, measured using 20 events per core on a an empty batch node with fast access to the data, running twice to get the data into cache, and ignoring the time of the first event (which includes some one-time setup).
| Number of Cores | NDArrCalib | AreaDetector.calib() | PnccdImageProducer | NDArrImageProducer | AreaDetector.image() | ||
|---|---|---|---|---|---|---|---|
| 1 | 0.06011 | 0.1213 | 0.0806 | 0.04 | 12 | ||
| 12 | 0.018-0.026 | 0.05021-0.08033 | 0.06-.09 | .08-0. | 14.07-.12 | 10 |
Numbers were roughly reproducible, but can be affected by lustre load variations. The code lives in the svn user-package "cpo" in file app/detTiming.py and can be run like this:
| Code Block |
|---|
mpirun -n 12 python detTiming.py --assem --cfg |
The assem/cfg parameters turn on "assembled image" (vs. unassembled image) and old-style psana-cfg-file data access (vs. new-style AreaDetector data access).
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