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Forum: Multithreading
Re: Question Simulation hang up (bilal)
Re: Question Re: Simulation hang up (Andrea Dotti)
Re: Sad Re: Simulation hang up (bilal)
Date: 26 Mar, 2015
From: Andrea Dotti <Andrea Dotti>

On Thu, 26 Mar 2015 16:26:49 GMT, bilal wrote:
> 
> I encountered this issue before and saw the answer in a previous thread
> so i keep my total number of particles upto a maximum of 1x10^9. However
> i would love to see if someone change the data member from int to
> something else and post how to do it.
> 
This is not trivial, and it is not recommended because it could cause problems of "overflows" in the physics results. For example, consider accumulation of a dose, if you have really a large number of primaries you could lose precision of the results. The recommended way is to not go over a billion of events in a single job.

> Okay i check with the top command and all the cpus are busy 100 %. But i
> print the events on screen (from event action) and it shows only a
> couple of threads updating the number of events processed rest are
> silent. 

Are you sure the problem is not simply in logging?

> I tried to run the example with the memory leak command however
> i cant understand the output (its a big file and i dont know how to find
> where is the memory leak and how to fix it). Thank you for the help i
> would appreciate any further comments or suggestions.
> 
you do not need valgrind for this test, again using "top" monitor the memory usage and verify it does not grow without control.

Andrea

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1 Feedback: Re: Simulation hang up   (bilal - 26 Mar, 2015)
(_ Idea: Re: Simulation hang up   (Andrea Dotti - 26 Mar, 2015)
(_ Note: Re: Simulation hang up   (bilal - 26 Mar, 2015)
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