Date: Sun, 6 Sep 2015 11:56:01 +0300 From: Solar Designer <solar@...nwall.com> To: john-dev@...ts.openwall.com Subject: Re: PHC: Argon2 on GPU Agnieszka, On Sat, Sep 05, 2015 at 09:17:47PM +0200, Agnieszka Bielec wrote: > argon2d using ulong4 vectors when accessing global memory Cool. Thank you for doing this! I think the next task is to get rid of any spilling to global memory. If we do have to store something in global memory, we should choose what that is explicitly. On NVIDIA, we're warned by ptxas whenever there's spilling. On AMD, we can build with: AMD_OCL_BUILD_OPTIONS_APPEND=-save-temps and find the summary near the end of the _temp_*.isa file, e.g. for our md5crypt-opencl: codeLenInByte = 16092 bytes; NumVgprs = 25; NumSgprs = 30; ScratchSize = 148 dwords/thread; LDSByteSize = 0 bytes/workgroup (compile time only); We should bring ScratchSize to zero. Alexander
Powered by blists - more mailing lists
Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.