Date: Sun, 3 Feb 2013 10:57:31 +0400 From: Solar Designer <solar@...nwall.com> To: john-dev@...ts.openwall.com Subject: Re: Avoiding AMD ASIC hangs On Sat, Feb 02, 2013 at 10:49:38PM -0800, Brian Wallace wrote: > Solar requested that I implement a split kernel to pwsafe-opencl to avoid > AMD ASIC hangs. Specifically, it was requested I ask magnum about the > right way to go about this. I won't be able to implement this right away, > but I should be able to in the coming week. How should I go about this? As I wrote in the original thread on pwsafe, before I saw your posting above: Brian - basically, individual kernel invocations should be taking no more than 200ms, preferably much less. This means that with a large GWS, you need to be computing only a fraction of the 2048 iterations per kernel invocation. Please store intermediate results in global memory. Some examples: fgrep HASH_LOOPS opencl_*.c opencl/* Alexander
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