Throughput Tests

01apr08

I did some quick benchmarks of MUSTANG (on the telescope with 8 DFBs + IX card) to see how the CPU load and timestamping are with different LSYNC and COADD values, with it in mind that this matters for the future array and DAQ computer. Data are in /home/simdata/JUNK/Rcvr_PAR/

LSYNC=300, Coadd=20 (nominal) -- Baseline CPU usage (just parsing) of 12%-22%. During scan: 12%-22%, but spikes up to 40% at the end of the scan. Timestamps are fine
LSYNC=300, COADD=5 -- Baseline CPU usage=22%. During scan: 50%. doesn't appear to spike at the end of the scan. Timestamps are fine. (2008_04_01_19:42:16)
LSYNC=150, COADD=5 -- baseline cpu usage=40%; during scan: 100%-115%; no spike at end. Timestamps are useless. (19:43:46)
LSYNC=150, COADD=20 -- baseline cpu usage=45%; scanning cpu usage=75%-100%. Timestamps are useless. (19:44:54)

-- BrianMason - 01 Apr 2008

Topic ThroughPutTests . { Edit | Attach | Ref-By | Printable | Diffs | r1.1 | More }

Revision r1.1 - 01 Apr 2008 - 20:26 GMT - BrianMason Parents: WebHome > GbtRunNotes	Content copyright © 1999-2007 by the contributing authors. All material on this collaboration platform is the property of the contributing authors.


NRAO Home > Green Bank \| Wiki Topic: GB > Pennarray > GbtRunNotes > ThroughPutTests

Changes \| Index \| Contents \| Search \| Go