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Date: Wed, 25 May 2016 13:51:08 +0200
From: Doc Case <drdrgmtn@...o.com>
To: "john-users@...ts.openwall.com" <john-users@...ts.openwall.com>
Subject: Re: MultiGPU support in Magnum?

Sorry for the late response...

After a couple of days of trials, I have upgraded the NVidia driver to the last version (closed source from NVidia) and everything is now working fine.

I've tried only the DMG format, but now is working.



Sent using Zoho Mail






---- On Thu, 19 May 2016 22:27:08 +0200 magnum &lt;john.magnum@...hmail.com&gt;wrote ---- 




On 2016-05-19 11:13, Doc Case wrote: 

&gt; Thank you Magnum. 

&gt; 

&gt; It was pretty straight-forward, my fault not to check on docs... Anyhow, 

&gt; something is still not right. This is the output I get, seems that a 

&gt; seg-fault happen on dev0, and fall back using just a single GPU... 

 

I haven't seen anything like that. There's no reason this 

multidevice-using-fork thing should cause problems for a system which 

works fine using one GPU at a time. Does this happen with other formats 

(than DMG) as well? 

 

magnum 

 

 

&gt; ./john -fork=2 -dev=gpu,acc -format=dmg-opencl ~/Downloads/hash.txt 

&gt; 

&gt; Using default input encoding: UTF-8 

&gt; 

&gt; Loaded 1 password hash (dmg-opencl, Apple DMG [PBKDF2-SHA1 OpenCL 3DES/AES]) 

&gt; 

&gt; Will run 4 OpenMP threads per process (8 total across 2 processes) 

&gt; 

&gt; Node numbers 1-2 of 2 (fork) 

&gt; 

&gt; Device 0: GeForce GTX 970 

&gt; 

&gt; [Tappo:03548] *** Process received signal *** 

&gt; 

&gt; [Tappo:03548] Signal: Segmentation fault (11) 

&gt; 

&gt; [Tappo:03548] Signal code: (128) 

&gt; 

&gt; [Tappo:03548] Failing at address: (nil) 

&gt; 

&gt; [Tappo:03548] [ 0] /lib/x86_64-linux-gnu/libpthread.so.0(+0x113d0)[0x7fab600943d0] 

&gt; 

&gt; [Tappo:03548] [ 1] /usr/lib/x86_64-linux-gnu/libnvidia-opencl.so.1(+0x96e9dc)[0x7fab547169dc] 

&gt; 

&gt; [Tappo:03548] [ 2] /usr/lib/x86_64-linux-gnu/libnvidia-opencl.so.1(+0x96ee95)[0x7fab54716e95] 

&gt; 

&gt; [Tappo:03548] [ 3] /usr/lib/x86_64-linux-gnu/libnvidia-opencl.so.1(+0x96f0e5)[0x7fab547170e5] 

&gt; 

&gt; [Tappo:03548] [ 4] /usr/lib/x86_64-linux-gnu/libnvidia-opencl.so.1(+0x507e30)[0x7fab542afe30] 

&gt; 

&gt; [Tappo:03548] [ 5] /usr/lib/x86_64-linux-gnu/libnvidia-opencl.so.1(+0x5086e2)[0x7fab542b06e2] 

&gt; 

&gt; [Tappo:03548] [ 6] /usr/lib/x86_64-linux-gnu/libnvidia-opencl.so.1(+0x512f6a)[0x7fab542baf6a] 

&gt; 

&gt; [Tappo:03548] [ 7] /usr/lib/x86_64-linux-gnu/libnvidia-opencl.so.1(+0x51338a)[0x7fab542bb38a] 

&gt; 

&gt; [Tappo:03548] [ 8] /usr/lib/x86_64-linux-gnu/libnvidia-opencl.so.1(+0x97ae45)[0x7fab54722e45] 

&gt; 

&gt; [Tappo:03548] [ 9] /usr/lib/x86_64-linux-gnu/libnvidia-opencl.so.1(+0x97b578)[0x7fab54723578] 

&gt; 

&gt; [Tappo:03548] [10] /usr/lib/x86_64-linux-gnu/libnvidia-opencl.so.1(+0x97bcbe)[0x7fab54723cbe] 

&gt; 

&gt; [Tappo:03548] [11] /usr/lib/x86_64-linux-gnu/libnvidia-opencl.so.1(+0x3f88a9)[0x7fab541a08a9] 

&gt; 

&gt; [Tappo:03548] [12] /usr/lib/x86_64-linux-gnu/libnvidia-opencl.so.1(+0x3f9429)[0x7fab541a1429] 

&gt; 

&gt; [Tappo:03548] [13] /usr/lib/x86_64-linux-gnu/libnvidia-opencl.so.1(+0x16c355)[0x7fab53f14355] 

&gt; 

&gt; [Tappo:03548] [14] /usr/lib/x86_64-linux-gnu/libnvidia-opencl.so.1(+0x16b47d)[0x7fab53f1347d] 

&gt; 

&gt; [Tappo:03548] [15] ./john[0x73c04c] 

&gt; 

&gt; [Tappo:03548] [16] ./john[0x73da8c] 

&gt; 

&gt; [Tappo:03548] [17] ./john[0x6ea10a] 

&gt; 

&gt; [Tappo:03548] [18] ./john[0x6f2355] 

&gt; 

&gt; [Tappo:03548] [19] ./john[0x6f3f78] 

&gt; 

&gt; [Tappo:03548] [20] ./john[0x6f42e6] 

&gt; 

&gt; [Tappo:03548] [21] ./john[0x6f5239] 

&gt; 

&gt; [Tappo:03548] [22] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf0)[0x7fab5fcda830] 

&gt; 

&gt; [Tappo:03548] [23] ./john[0x407c39] 

&gt; 

&gt; [Tappo:03548] *** End of error message *** 

&gt; 

&gt; 

&gt; 

&gt; 

&gt; Sent using Zoho Mail 

&gt; 

&gt; 

&gt; 

&gt; 

&gt; 

&gt; 

&gt; ---- On Thu, 19 May 2016 10:37:25 +0200 magnum &amp;lt;john.magnum@...hmail.com&amp;gt;wrote ---- 

&gt; 

&gt; 

&gt; 

&gt; 

&gt; On 2016-05-19 02:06, Doc Case wrote: 

&gt; 

&gt; &amp;gt; Hi to everyone, 

&gt; 

&gt; &amp;gt; I think i'm missing something... I have 2 GPUs in my system, a couple of GeForce GTX970 and I've built from bleeding john with support for openCL, cuda and OpenMPI. 

&gt; 

&gt; &amp;gt; I'm tryng to crack a SHA1 3DES/AES, but john works only with one GPU. 

&gt; 

&gt; &amp;gt; In nvidia-settings i can see the temperature rising just on one of the two cards... any suggestion on what i'm missing? I need to use two different session, one for each card? if so, can you point some instructions to do so? 

&gt; 

&gt; 

&gt; 

&gt; doc/README-OPENCL, section "Multi-device support". 

&gt; 

&gt; 

&gt; 

&gt; magnum 

&gt; 

&gt; 

&gt; 

&gt; 

&gt; 

&gt; 

&gt; 

&gt; 

&gt; 

 







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