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Date: Sat, 26 Mar 2016 13:21:54 +0100
From: magnum <john.magnum@...hmail.com>
To: john-users@...ts.openwall.com
Subject: Re: Error running mscash2-opencl on GeForce GTX 770M
On 2016-03-26 09:13, Marc Brinkmann wrote:
> Dear John-Users,
> i have trouble running a opencl-session on my Nvidia GPU powered Notebook.
> John is up-to-date as i speak, i pulled git-code and rebuilt it.
> This is, what happens,
> [Code]
> ~/JohnTheRipper/run$ optirun ./john domain.txt --format=mscash2-opencl
> --session=domain-opencl
> ./john: /usr/lib/x86_64-linux-gnu/libOpenCL.so.1: no version information
> available (required by ./john)
> Using default input encoding: UTF-8
> Loaded 10 password hashes with 10 different salts (mscash2-opencl, MS Cache
> Hash 2 (DCC2) [PBKDF2-SHA1 OpenCL])
> Device 0: GeForce GTX 770M
> Press 'q' or Ctrl-C to abort, almost any other key for status
> OpenCL CL_OUT_OF_RESOURCES error in opencl_mscash2_helper_plug.c:525 -
> Error in Get Event Info
> [/Code]
I guess that particular format fails to take some device limit in
consideration. Try running with --verb=5 and see what LWS/GWS are used.
You can always force worksizes, like this:
$ LWS=64 GWS=1024 ./john domain.txt --format=mscash2-opencl
--session=domain-opencl
Doing the same with mpirun:
$ mpirun -host blabla -x LWS=64 -x GWS=1024 ./john domain.txt
--format=mscash2-opencl --session=domain-opencl
Perhaps the -x option works for optirun too? Or maybe there's some other
syntax.
magnum
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