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Re: parcellfun and rand

From: Francesco Potortì
Subject: Re: parcellfun and rand
Date: Tue, 07 Sep 2010 21:48:36 +0200

>> For Monte Carlo simulations, note that they are not reproducible, as the
>> number of jobs scheduled to each process is not predictable.
>which gives you another interesting random number generator ;-)

Yes, with too little entropy to be useful, and too much for being
harmless :)

>I guess no way of making it reproducible?

As far as I understand (the implementation is Jaroslav's, I only made
some patches to the random number part) one would need to rewrite the
core implementation, which is based on a first-come first-served
criterion.  To gain reproducibility one would need to do a static
scheduling beforhand, and assign a given list of jobs to a given process
in a deterministic way.  I would definitely find a use for something
like that, as I use monte Carlo myself.  Moreover, that would be a
scheme simpler to implement with respect to the current one.

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