Follow @Openwall on Twitter for new release announcements and other news
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date: Sat, 5 Oct 2019 13:44:52 +0200
From: magnum <>
Subject: Re: OpenCl on mesa amd

On 2019-10-04 12:31, Bernd Roehmer wrote:
> I just installed opencl-mesa and ocl-icd on Manjaro and as well as john 
> 1.9.0.jumbo1-2.
> I tried to test rar password cracking with the built in test but I am 
> running into error messages:

We've seen many bugs in the MESA runtime and the RAR-opencl format is 
very well tested so I suspect you're seeing bugs in MESA.

> Any ideas what I can do now? Running the test without opencl works 
> without a problem.

Are you running latest'n'greatest MESA? While I really hope MESA and 
pocl eventually evolve to good stuff, your best bet is probably trying a 
proprietary driver. They can be installed side by side BTW.

> I am curious why john opens 12 OpenMP processes, when it is supposed to 
> use the gpu. My cpu has 12 cores.

The RAR-opencl format and very few others have some post-processing on 
CPU (if all early-reject tests pass) because the actual "unrar" code is 
more or less impossible to implement on GPU.


Powered by blists - more mailing lists

Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.