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Date: Thu, 22 Sep 2011 19:36:19 +0000
From: "Relkin, Paul" <>
To: "" <>
Subject: RE: OpenCL performance numbers on Radeon HD 5870

Thank you it's much faster! On my 5870 I'm getting 276950 c/s real, 592957 c/s virtual for phpass. However, I keep getting Segmentation faults after running phpass for ~5 minutes. Sha256crypt halts my computer too.
From: Lukas Odzioba []
Sent: Thursday, September 22, 2011 12:02 PM
Subject: Re: [john-users] OpenCL performance numbers on Radeon HD 5870

I uploaded newest version fixing some bugs and faster phpass.
On phpass@...0 I've got ~300k c/s what is still slow comparing to
gtx460 with ~245k c/s.

I had a problem with this revision. Sha256crypt halts my computer
during .cl compilation. I would apreciate if someone could confirm it.

It happens only on AMD devices, not on nVidia's.
Direct link to patch:


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