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Message-ID: <20150622034902.GB16542@openwall.com>
Date: Mon, 22 Jun 2015 06:49:02 +0300
From: Solar Designer <solar@...nwall.com>
To: john-dev@...ts.openwall.com
Subject: Re: bcrypt-opencl local vs. private memory
On Sun, Jun 21, 2015 at 01:30:52AM +0200, magnum wrote:
> On 2015-06-20 23:04, Solar Designer wrote:
> > magnum, can we possibly have
> > this local vs. private bit autodetected along with GWS and LWS?
>
> Well the bcrypt format could do so. That would be for Sayantan to
> implement. However, I just commited a workaround for now, simply using
> nvidia_sm_5x() instead of gpu_nvidia().
This is based on testing on your Maxwell card? What speeds are you
getting for local vs. private memory there? And what card is that?
> BTW for my Kepler GPU, I see no difference between using local or private.
Note that I initially pointed this out for a Kepler - the TITAN that we
have in super:
http://www.openwall.com/lists/john-dev/2015/05/07/36
So maybe the check should be:
#if nvidia_sm_3x(DEVICE_INFO) || nvidia_sm_5x(DEVICE_INFO)
Alexander
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