Date: Tue, 31 Mar 2015 16:34:58 +0200 From: Agnieszka Bielec <bielecagnieszka8@...il.com> To: john-dev@...ts.openwall.com Subject: Re: [GSoC] John the Ripper support for PHC finalists Tue, 31 Mar 2015 04:10:04 -0700, epixoip: >So that's about 4x faster than with the autotune settings, and about 3x slower than my CPU: POMELO will never be fast on GPU because __local and __private memory are limited http://stackoverflow.com/questions/5237181/is-there-a-limit-to-opencl-local-memory "To illustrate, on NVidia Kepler GPUs, the local memory size is either 16 KBytes or 48 KBytes (and the complement to 64 KBytes is used for caching accesses to Global Memory). So, on GPUs of today, local memory is very small relative to the global device memory." I am forced to use __global memory which is significally slower I've reviewed the pomelo algorithm and it is impossible to refactor the code to use small amount memory at one time because it need to read values under random indexes of the bufor Content of type "text/html" skipped
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