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Date: Thu, 28 Mar 2013 02:45:56 +0100
From: magnum <>
Subject: Re: MPI-openCL build; fast hashes are faster!!

On 27 Mar, 2013, at 22:54 , Sayantan Datta <> wrote:
> OpenCL-MPI build using openmpi results in some of the fast hashes to speed up by 1.5-3x without any extra modification  e.g. raw-md4,raw-md5,raw-sha1 ,xsha512 and des. I haven't tested all hashes but most of them works fine except the slow hashes which causes asic hangs most of the time with anything more than 1 thread feeding the GPU. 

You mean with all processes using one same GPU? On what branch was that? Recent improvements in raw-md4/md5 in bleeding-jumbo has reduced transfer latencies a lot so that approach should be less rewarding.


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