Date: Sun, 14 Oct 2012 19:50:47 +0400 From: Solar Designer <solar@...nwall.com> To: "[Jano]" <jano@...oweb.net> Cc: john-dev@...ts.openwall.com Subject: Re: Performance with SSE2 support with WPA-PSK and openCL error Hi Jano, Why are you posting this to john-dev? You appear to raise typical end-user concerns, so your message would be on topic for john-users, not for john-dev. The latter is for discussions around JtR source code. Now that the message is already on john-dev, let's continue this thread in here, but going forward please note that this kind of stuff is more suitable for john-users. Thanks. On Sun, Oct 14, 2012 at 02:05:14PM +0200, [Jano] wrote: > Benchmarking: WPA-PSK PBKDF2-HMAC-SHA-1 [32/64]... DONE > Raw: 352 c/s real, 352 c/s virtual You have a non-OpenMP build here, hence you're using just one CPU core here. You may improve speed (to around 2000 c/s maybe, depending on your CPU type) by building with OpenMP (see README). We have no SSE2 support for WPA-PSK yet, this is true. :-( > OpenCL error (CL_OUT_OF_RESOURCES) in file (opencl_rawmd4_fmt.c) at line (300) - (failed in clEnqueueWriteBuffer buffer_keys) > OpenCL error (CL_INVALID_CONTEXT) in file (rar_fmt.c) at line (367) - (Error Unmapping aes_key) You ran plain --test, which is known to fail in GPU-enabled builds - see doc/BUGS in 1.7.9-jumbo-7. The GPU-enabled WPA-PSK format was not yet benchmarked in your test run (the program crashed sooner than that format would have been benchmarked). You probably want to run: john --test --format=wpapsk-opencl You will also want to make an OpenMP-enabled build (both OpenMP and OpenCL at once), since the wpapsk-opencl format benefits from that as well. This should give a c/s rate in tens of thousands on a reasonable GPU. Alexander
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