Date: Tue, 14 Aug 2012 22:27:06 +0530 From: Dhiru Kholia <dhiru.kholia@...il.com> To: john-dev@...ts.openwall.com Subject: Re: OpenCL implementation of GPG format On Tue, Aug 14, 2012 at 9:55 PM, Dhiru Kholia <dhiru.kholia@...il.com> wrote: > I have written an OpenCL implementation of GPG format. Currently, the > speedup is very low (9x). The compiler complains about register > spilling. According to http://dl.acm.org/citation.cfm?id=2039822 > speedups upto 100x can be achieved. > > Can someone on the list take a look and try to troubleshoot the > performance issues? Thanks! How do you guys run sprofile on john's OpenCL kernels? I tried running it but got following error, ✗ sprofile -w . ../run/john -fo:zip-opencl -t --device=cpu Using default output file. AMD APP Profiler V2.5.1804 is Enabled AMD APP Profiler V2.5.1804 is Enabled OpenCL platform 0: AMD Accelerated Parallel Processing, 2 device(s). Using device 0: Cayman OpenCL error (CL_INVALID_VALUE) in file (common-opencl.c) at line (93) - (Error creating context) -- Cheers, Dhiru
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