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 Post subject: System load issues
PostPosted: Sat May 05, 2018 1:35 pm 
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Joined: Fri May 04, 2018 2:44 pm
Posts: 1
Hello,

We have been having memory processing issues running OpenViBE. In short, we're running identical versions of the same code in two institutions with virtually identical computer specifications. One version manages to keep the system load down around 20-30% indefinitely; one gradually creeps up to about 95% over the course of a few minutes and starts giving lag warnings thereafter. It should be mentioned that we are calling a MATLAB function, and currently we have different versions of MATLAB. However, the one that works better calls 2011a and the other calls 2015b. We have looked into many internal settings to see if they make a difference (sampling rate, # channels called, amount of memory allocated to MATLAB and OpenViBE, etc.) and we cannot meaningfully stop this gradual load issue.

Any input you might have on this matter would be very helpful!


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 Post subject: Re: System load issues
PostPosted: Mon May 07, 2018 9:12 pm 
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Joined: Tue Dec 04, 2012 3:53 pm
Posts: 691
Location: INRIA Rennes, FRANCE
Hi,

are they identical versions of openvibe too? In some older ov versions the matlab scripting box had memory leaks that we've fixed since. You could of course try to run a profiler on each computer and see where the time is spent during the run (if not inside matlab). The differences in the two results might reveal something. Matlab also has its own profiler that can be used to dig into script execution times.


Cheers,
Jussi


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