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Date: Fri, 2 Jun 2006 13:11:14 -0400
From: Erik Winkler <ewinkler@...ls.com>
To: john-users@...ts.openwall.com
Subject: Re: beta MPI john patch against 1.7.2.
The patch seems to be working. Here are a few sample tests:
1) mpirun -np 1 /JTR/john -test -format:DES (master - 1.3 Ghz G4)
Benchmarking: Traditional DES [128/128 BS AltiVec]... DONE
Many salts: 620108 c/s real, 635357 c/s virtual
Only one salt: 566553 c/s real, 571122 c/s virtual
2) mpirun -nolocal -np 1 /JTR/john -test -format:DES (single 1.8 Ghz
G5 CPU)
Benchmarking: Traditional DES [128/128 BS AltiVec]... DONE
Many salts: 1011K c/s real, 1013K c/s virtual
Only one salt: 877721 c/s real, 883019 c/s virtual
3) mpirun -np 4 /JTR/john -test -format:DES (3-1.8 Ghz G5, 1-1.3 Ghz
G4 CPUs)
Benchmarking: Traditional DES [128/128 BS AltiVec]... DONE
Many salts: 3636K c/s real, 3680K c/s virtual
Only one salt: 3185K c/s real, 3217K c/s virtual
mpirun -np 4 /JTR/john -test -format:LM (3-1.8 Ghz G5, 1-1.3 Ghz G4
CPUs)
Benchmarking: NT LM DES [128/128 BS AltiVec]... DONE
Raw: 21537K c/s real, 21876K c/s virtual
mpirun -np 4 /JTR/john -test -format:MD5 (3-1.8 Ghz G5, 1-1.3 Ghz G4
CPUs)
Benchmarking: FreeBSD MD5 [32/32 X2]... DONE
Raw: 13610 c/s real, 13824 c/s virtual
Really makes a difference on the MD5 crunching. I have tested this
version of john running against hash files with no success. While
the hash crack faster, the master instance of john doesn't shut down
until I do a kill -9 on the process. The password is then revealed.
This might be a bug, but I am not sure. I am running MPICH.
Erik
On May 31, 2006, at 11:34 PM, Otheus (aka Timothy J. Shelling) wrote:
> This is a (beta) patch for John 1.7.2 for use with MPI. All of the
> MPI-specific code is encapsulated by #ifdef MPI/#endif, so in
> theory this can be integrated into the main code branch. However, a
> few generic changes to the code are also made.
>
> Please let me know of any rejects while performing the patch. (Use -
> l to ignore whitespace to avoid problems with bench.c.)
>
> Changes:
> o internalized computing the checksum for ext_word. 15% increase
> in speed (at least)
> o makes sure options required for MPI are present
> o computes MPI performance in --test mode.
>
> Notes:
> o benchmark computes results by summing cracks across all nodes
> and dividing that by the AVERAGE of the crack-times. (in the code,
> cracks are multiplied by the MPI-size, which is the same thing).
>
> Known bugs:
> o john.pot gets littered with extraneous output, usually low
> integers like "4" or "1" and a newline. Very strange. Still trying
> to track it down.
> o successfull cracks do not get posted to the other tasks
> o use of external filter with internal checksum causes a slight
> (1-2%) slowdown
>
>
> Incorporate the john.conf file into yours (or the default)... then
> run with:
>
> mpirun <mpirun-args> john <mode> --external=MPIbyInternalKeySum --
> session=john%d.rec
>
> For a restore:
>
> mpirun <mpirun-args> john --restore=john%d.rec
>
> You can also benchmark it:
>
> mpirun <mpirun-args> john --test
>
>
> --
> Otheus
> otheus@...il.com
> +43.650.790.2571
> --
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