Date: Fri, 29 Sep 2017 09:34:55 -0400 From: "Scott I. Remick" <scott@...mick.net> To: john-users@...ts.openwall.com Subject: Re: OMP vs. OpenCL performance On Fri, Sep 29, 2017, at 03:10 AM, magnum wrote: > I presume your hashes are in the order of 500,000 iterations. If not, > that's too slow. I did some research and couldn't find a definitive answer to that, but I wouldn't put it beyond Apple to use that many in MacOS in 2017. Perhaps someone on this list knows. But is that "too slow" opinion based just upon the OMP p/s, or the OpenCL figure as well? Since I'm already a convert to OpenCL and going to run with that, as long as the OpenCL numbers look good I won't stress out about it. But if those figures also seem too small for the presumed iterations then I'll definitely be looking for assistance to diagnose that. > Ensure you buy an nvidia with Maxwell (9xx) or Pascal (10xx) chipset. As > you've seen, even a low budget one will be way faster than your CPU. Definitely. I'm leaning towards a GTX 1070, having built several Oculus Rift and HTC Vive VR workstations at this point, it seems to be the sweet spot at the moment. And one with a blower-exhaust design (vs. a "churn" design), like the Asus card which I've had great success with. However this is a low-priority and not happening anytime soon, so for the time being I'm looking to squeeze out as much performance from my existing hardware as I can.
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