Date: Sat, 13 Jul 2013 05:15:18 +0400 From: Solar Designer <solar@...nwall.com> To: john-dev@...ts.openwall.com Subject: Re: new dev box wishes On Tue, Jul 09, 2013 at 08:22:01PM +0400, Solar Designer wrote: > On Fri, Jun 28, 2013 at 10:54:46PM +0400, Solar Designer wrote: > > Our Xeon Phi 5110P should arrive on Tuesday > > That was a week ago, and it did arrive. Here are some pics of it, > including with the blue shroud removed: > > http://openwall.info/wiki/internal/xeon_phi > > It didn't fit into a couple of server platforms that were readily > available. The next thing to try is likely installing some cooling fans > intended for 1U chassis right onto the Xeon Phi card, thus producing > airflow similar to what the card would be exposed to in proper chassis. > Maybe one or two of these: > > http://www.srv-trade.ru/catalog/3918429255/FAN-0086L/ > http://www.srv-trade.ru/catalog/3918429255/FAN-0086L4/ > > (12k RPM, so must be very noisy, but that's OK for this machine). This was attempted: http://openwall.info/wiki/internal/xeon_phi#An-attempt-at-cooling-it but it turned out not to matter yet, because Xeon Phi simply doesn't work in this motherboard: http://forum.giga-byte.co.uk/index.php/topic,12801.0.html For now, our new dev box has been setup with GPUs, but without Xeon Phi. I am running some Bitcoin mining as a stress-test on its 3 GPUs at the moment. 7990's first GPU got to 93C at first, but then I forced 7990's fans speed to 100% (somehow it didn't go above 74% on its own) and the temperatures dropped to under 90C. solar@...l:~/j/bleeding-jumbo/run$ ./john -te -form=mscash2-opencl -dev=0,1,4 Device 0: Tahiti (AMD Radeon HD 7900 Series ) Optimal Work Group Size:128 Kernel Execution Speed (Higher is better):1.692624 Optimal Global Work Size:278528 Device 1: Tahiti (AMD Radeon HD 7900 Series ) Optimal Work Group Size:256 Kernel Execution Speed (Higher is better):1.692732 Optimal Global Work Size:557056 Device 4: GeForce GTX TITAN Optimal Work Group Size:1024 Kernel Execution Speed (Higher is better):1.040073 Optimal Global Work Size:729088 Benchmarking: mscash2-opencl, M$ Cache Hash 2 (DCC2) [PBKDF2-SHA1 OpenCL]... DONE Raw: 273066 c/s real, 113212 c/s virtual Alexander
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