Date: Fri, 16 Aug 2013 01:29:14 +0530 From: Sayantan Datta <std2048@...il.com> To: john-dev@...ts.openwall.com Subject: Re: key-length for mask mode. On Tue, Aug 13, 2013 at 12:30 PM, Solar Designer <solar@...nwall.com> wrote: > On Tue, Aug 13, 2013 at 11:33:34AM +0530, Sayantan Datta wrote: > > On Tue, Aug 13, 2013 at 10:51 AM, Solar Designer <solar@...nwall.com> > wrote: > > > > > [...] And yes, myrice's code achieved a similar speed, > > > including with more hashes - IIRC, we were testing with 1M and 10M, as > > > well as with a few thousand, and the speed somehow varied between > > > invocations, sometimes being above 3000M c/s and sometimes below. > (This > > > is twice slower than hashcat's, though.) > > > > I have tested myrice PG-test branch without any tweaks: > > > > OpenCL platform 0: AMD Accelerated Parallel Processing, 2 device(s). > > Using device 0: Tahiti > > Local work size (LWS) 128, Global work size (GWS) 65536 > > Loaded 12906 password hashes with no different salts (Raw MD5 [OpenCL]) > > end self test > [...] > > guesses: 0 time: 0:00:00:21 0.00% (3) c/s: 14865G trying: sl3adu - > bdbmme > > > > Myrice's kernel is spilling into scrach registers which might be the > reason > > for lower performance. Most likely you had tested it with > > a different driver. > > Another reason is that it is possible that myrice and I were using other > hash counts in those tests - 1M, 10M, and perhaps a few thousands - but > not 13k. It is possible that the thresholds are chosen poorly, which is > seen with this hash count. > > Alexander > Hi Alexander, I'm getting following speeds with my kernel: 10M hashes - 500Mc/s 1M hashes - 1450Mc/s 100k hashes- 1500Mc/s 13k hashes- 2700Mc/s 5 hashes- 3000Mc/s Using myrice kernel: 10M - 440Mc/s 1M - 930Mc/s 100k - 1122Mc/s 13k - 650Mc/s 5 - 1700Mc/s I am using 8 bitmaps of size 4kBx4, 256MBx2, 128MBx1, 64MBx1. Also a hashtable of size 128MB + next hash table of fixed size 128MB(enough for 32M hashes). Myrice is using much lesser global memory though. Regards, Sayantan Content of type "text/html" skipped
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.