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Date: Mon, 19 Dec 2011 13:24:02 -0700
From: RB <>
Subject: Re: DES BS + OMP improvements, MPI direction

On Mon, Dec 19, 2011 at 12:36, Solar Designer <> wrote:
> It is unclear from what you wrote above whether having completed that
> single set would be any better or not.  You seem to imply that it would,
> but this is not so obvious.

I'm sorry - yes, I am implying that for a time-limited run, completing
the largest number of passes and thereby minimizing that run's
sparseness is, if not desirable (better), at least what the typical
user is going to expect.

>> It would be fascinating (but programmatically challenging) to
>> have the implementation automatically switch approaches (or reduce
>> working unit size) as timing for individual sets clears a given
>> threshold.
> I previously proposed how to do something like that (and even better) in
> the last paragraph of:

Now I remember you linking that for me before; thanks for the repeated
lesson.  :)  The range-splitting is certainly elegant and ideal, the
devil would be making that approach light enough to scale reasonably
for even relatively fast hashes.  A full master/slave network model
might be too much (which I'm certain you're aware of).

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