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Date: Thu, 25 Mar 2010 09:36:38 +0100
From: "Magnum, P.I." <>
Subject: Re: Extended MPI support

I just uploaded version 4 of the full-MPI patch at

* If loading wordlist to memory, split it while loading instead of 
leapfrogging later. Note that the limit (default 5 MB) will be imposed 
per node, so a 20 MB file may be loaded by four nodes even with the 
default setting - using 4 MB each.
* Sometimes elect to leapfrog words instead of rules if it seems better
* Some bug fixes (notably one where aborting a job very early could 
result in improper restoring of the job)
* Some fixes to cope with extreme c/s rates (cosmetic)
* Some changes for coping with various MPI environments. It should now 
hopefully work fine under mpich1 too.
* The c/s figures now tries to tell the same truth as a standard john 
do. This means it will be impacted if the nodes does not finish almost 
simultaneously. Do not stare too much at those numbers without knowing 
what they actually tell you.

The below still applies:
 > This is just experimental code. Most importantly, do not blame Solar
 > Designer if you encounter problems. Do not blame me either, instead
 > just fix it and submit your patch ;)
> There really was no rocket science involved. Like the mpi10 patch, my
> extensions are licensed "under the same terms as John the Ripper itself"
> as stated in doc/LICENSE.mpi. In case that does not make sense, my work
> is hereby placed in the public domain.


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