Date: Tue, 7 Jan 2014 22:37:20 +0500 From: Muhammad Junaid Muzammil <mjunaidmuzammil@...il.com> To: "john-dev@...ts.openwall.com" <john-dev@...ts.openwall.com> Subject: Re: CUDA multi-device support Sure, I will post a comment at the issue tracker whichever I choose. Regards, Junaid On Tuesday, January 7, 2014, magnum wrote: > On 2014-01-07 16:51, Muhammad Junaid Muzammil wrote: > >> Currently, I don't have physical multi GPU access. Will have to look for >> some alternatives. >> > > Otherwise I can get temporary access to a dual-device CUDA machine in a > week or so, so I can do the pwsafe fixes. Feel free to pick any other issue > you want from https://github.com/magnumripper/JohnTheRipper/issues (just > tell us you'll be looking into it so we don't end up doing same things) or > just implement a new format of your choice (perhaps one we have as > CPU-only), or optimize an existing one if possible. CUDA or OpenCL, that's > up to you. > > BTW another thing you could try if you like, is CUDA auto-tuning. Many of > our OpenCL formats auto-tune their local/global worksizes at startup (and > we're moving towards using as much shared code as possible for that). All > our CUDA formats currently have hard-coded threads/blocks, defaulting to > figures non-optimal for high-end GPUs. > > magnum > > Content of type "text/html" skipped
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