I bought myself two Radeon HD5770, together they are as fast as one HD5870 but I saved ~60€ :) After some tweaks I finally got one graphiccard to crunching numbers with a speed around 320 chains/s. Must the second card used as extended monitor to get there calculating? Will try it this evening. As far as I know ATI Stream should automatically detect and use multiple GPUs. I will post my experience later this week on the mailinglist and maybe the wiki (if it's desired).
Regards Michael 2009/11/14 Frank A. Stevenson <[email protected]> > I adjusted some parameters, and got 20% better utilization of the > pipeline. The speed is now 470-480 chains a second. The code for this > has been committed to svn > > http://reflextor.com/trac/a51/browser/ati_shared_lib > > The code will only work on a full pipeline ( > 147456 chains at 288 > stream cores )- and will idle if it runs out of data. > > The workload is divided between CPU / GPU, the GPU only does the A5/1 > rounds, while the CPU switches the round functions for the GPU when > chains reach the hard coded distinguishing point (15 bits) > > Frank > > > > > _______________________________________________ > A51 mailing list > [email protected] > http://lists.lists.reflextor.com/cgi-bin/mailman/listinfo/a51 >
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