Date: Wed, 20 Jun 2012 00:14:44 +0400 From: Solar Designer <solar@...nwall.com> To: john-dev@...ts.openwall.com Subject: Re: bf-opencl On Wed, Jun 20, 2012 at 12:04:13AM +0530, SAYANTAN DATTA wrote: > How do I compile program written in IL? Is there any documentation > regarding AMD IL? Yes: http://developer.amd.com/sdks/AMDAPPSDK/assets/AMD_Intermediate_Language_(IL)_Specification_v2.pdf (506 pages). I think there's a lack of documentation on GCN, though. I think we should start by reviewing code generated from OpenCL source, much like we review x86-64 assembly code generated by gcc. > BTW the bf_kernel is stable upto 1225Mhz core and 1300MHz memory. Does this mean it was no longer stable at 1250 MHz core? Are you referring to my test from yesterday, where I got ASIC hang at 1250 MHz after 3.5 minutes? If so, that does not tell me much because I also got a system reboot after 15 minutes running the same code at stock clocks. BTW, changing the memory clock back and forth did not affect bf-opencl performance at all, which confirms that it indeed does not use global memory much (in the current code revision). That's good. Alexander
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