Re: [MSNoise] compute-cc doesn't work on multiple threads - MSNoise - KSB-ORB Mailing Lists

24 Jun 2019

Dear Joseph,

Thanks for using MSNoise.

If there is only one core running it means probably that you have only 1 
day of data to correlate. The multi-thread/processing of MSNoise works 
based on "day" jobs, which are independent from the other days. With 1 
day of data for N stations, you'll have N (N-1)/2 jobs "T"odo in the 
database, but they will all be processed by the same thread.

Best regards,

Thomas

Le 24/06/2019 à 02:32, Thangraj, Joseph a écrit :
...
  Dear Thomas,
       I am using MSNoise to process a 250 Hz sample rate data set with 
 131 stations. I was trying to run my cross-correlations (compute-cc) 
 in parallel to make the computations faster. However, inspite of using 
 msnoise -t 14 compute-cc  on a 70 cpu computer (256 Gb ram), the 
 cross-correlations still run on one cpu. The parallel instances of 
 'compute-cc' start and finish without doing any jobs. Is it because 
 the first instance sets all the jobs as 'I' meaning in progress, or 
 should I change something in my config to make it run in parallel. I 
 would appreciate your input about this problem. Please let me know if 
 you require any additional information.
 Have a good week ahead!

 Joseph Thangraj

 Graduate student

 Department of Geosciences

 Baylor University