[MSNoise] compute-cc doesn't work on multiple threads

[Thomas Lecocq]

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
>