Date: Thu, 4 Jun 2015 00:11:18 +0200 From: Luis Rocha <luiscrocha@...il.com> To: john-users@...ts.openwall.com Subject: Re: Multiple GPU and Fork After following the mentioned tutorial, installing AMD drivers and sdk, JtR it is running well with a non-priv account and using all GPU's with the fork option. $ ./john 3-base.md5crypt.pw --format=md5crypt-opencl --dev=0,1 --fork=2 Loaded 1726 password hashes with 1726 different salts (md5crypt-opencl, crypt(3) $1$ [MD5 OpenCL]) Node numbers 1-2 of 2 (fork) Device 1: Pitcairn [AMD Radeon HD 7800 Series] Device 0: Hawaii [AMD Radeon R9 200 Series] Press 'q' or Ctrl-C to abort, almost any other key for status 2 0g 0:00:02:08 3/3 0g/s 738.5p/s 1306Kc/s 1306KC/s GPU:59°C util:97% fan:56% supro..batas1 1 0g 0:00:02:07 3/3 0g/s 1646p/s 3013Kc/s 3013KC/s GPU:84°C util:100% fan:64% ceds24..sevoty Once again thanks for the help .. looks like in this case it was something on my system. On Wed, Jun 3, 2015 at 9:00 PM, Luis Rocha <luiscrocha@...il.com> wrote: > >> ... but you probably didn't have DISPLAY nor XAUTHORITY set to talk to >> your X server from that root shell. (Maybe your bad habit of running >> john as root has finally backfired.) You should be running john from a >> user account and environment authorized to talk to your X server. As a >> test, try running "xterm &" from the shell that you use to start john - >> will it start, will it appear on your desktop? If so, exit the xterm >> and then start john. If not, correct this first. >> >> > I did try from a non-priv account "xterm &" and a it appeared on my > desktop. I started JtR from there but same behavior. I exited and started > JtR and the same behavior. > I also have the DISPLAY variable and allowed X access with "xhost +" > > $ cat .bashrc | grep DISPLAY > export DISPLAY=:0 > > $ xhost + > access control disabled, clients can connect from any host > > Then I logged off and connected back using ssh and executed: > > $ sudo ./john 3-base.md5crypt.pw --format=md5crypt-opencl --dev=0,1 > --fork=2 > [sudo] password for user: > initUnicode(UNICODE, ASCII/ASCII) > ASCII -> ASCII -> ASCII > Loaded 1726 password hashes with 1726 different salts (md5crypt-opencl, > crypt(3) $1$ [MD5 OpenCL]) > Node numbers 1-2 of 2 (fork) > Device id 0 not working correctly, skipping. > Device id 1 not working correctly, skipping. > No OpenCL devices found > Device 0: Hawaii [AMD Radeon R9 200 Series] > Calculating best global worksize (GWS); max. 500ms single kernel > invocation. > Raw speed figures including buffer transfers: > > > Had to run JtR with sudo because without sudo the opencl devices were not > listed .. maybe I have somehow a broken installation of drivers and so on > and so forth ... > I am going to reinstall the OS and follow this guide > https://hashcat.net/wiki/doku.php?id=linux_server_howto .. then if you > someone is willing to help me debug this FORK issue I am all for it. > > On a different note, I got a Gygabyte R9 290x in case someone wants to > perform some tests I am available to run those. > > Thank you for the help! > Luis > >
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