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Message-ID: <4F1F0F6C.7000902@hushmail.com>
Date: Tue, 24 Jan 2012 21:07:08 +0100
From: magnum <john.magnum@...hmail.com>
To: john-dev@...ts.openwall.com
Subject: OpenCL vs Test Suite
I had a look at OpenCL patch rev 5 today. Some comments:
Here's raw-md5 in CPU:
Benchmarking: Raw MD5 [SSE2i 12x]... DONE
Raw: 24852K c/s real, 24852K c/s virtual
...and here is OpenCL version:
OpenCL Platforms: 1
OpenCL Platform: <<<NVIDIA CUDA>>> 1 device(s), using device: <<<GeForce
9600 GT>>>
Compilation log:
Max Group Work Size 512 Optimal Group work Size = 64
Benchmarking: Raw MD5 [raw-md5-opencl]... DONE
Raw: 31145K c/s real, 15572K c/s virtual
OK, that's 25% faster. But with real work, it does not deliver:
$ ./john -fo:raw-md5-opencl test/test.rawmd5 -inc:digits -pot:deleteme
OpenCL Platforms: 1
OpenCL Platform: <<<NVIDIA CUDA>>> 1 device(s), using device: <<<GeForce
9600 GT>>>
Compilation log:
Max Group Work Size 512 Optimal Group work Size = 64
Loaded 8 password hashes with no different salts (Raw MD5 [raw-md5-opencl])
guesses: 0 time: 0:00:02:09 7.54% (ETA: 2012-01-24 15:18:23) c/s:
388451 trying: 7040624 - 94720711
Session aborted
The CPU format exhausted -inc:digits in 6 seconds for the same test.
I also tried running the OpenCL formats in the Test Suite, and more
problems showed up:
-------------------------------------------------------------------------------
- JtR-TestSuite (jtrts). Version 1.11, Dec 18, 2011. By, Jim Fougeron
- Testing: John the Ripper password cracker, ver: 1.7.9-jumbo-5
[linux-x86-64-opencl]
--------------------------------------------------------------------------------
John Jumbo build detected.
testing: john -test=0
OpenCL error (CL_MEM_OBJECT_ALLOCATION_FAILURE) in file
(rawMD5_opencl_fmt.c) at line (126) - (Error mapping page-locked memory)
form=cryptmd5-opencl guesses: 0 unk unk : Expected
count(s) (1500) [!!!FAILED!!!]
sh: cannot open ./tst.pot: No such file
.pot CHK:cryptmd5-opencl guesses: 10 time: 0:00:07:33 :
Expected count(s) (1500) [!!!FAILED!!!]
form=phpass-opencl guesses: 1470 time: 0:00:02:41 :
Expected count(s) (1500) [!!!FAILED!!!]
.pot CHK:phpass-opencl guesses: 1470 time: 0:00:02:41 [PASSED]
form=raw-md5-opencl guesses: 1429 time: 0:00:00:01 :
Expected count(s) (1500) [!!!FAILED!!!]
.pot CHK:raw-md5-opencl guesses: 1429 time: 0:00:00:02 [PASSED]
form=raw-sha1-opencl guesses: 1468 time: 0:00:00:00 :
Expected count(s) (1500) [!!!FAILED!!!]
.pot CHK:raw-sha1-opencl guesses: 1468 time: 0:00:00:00 [PASSED]
form=nt-opencl guesses: 1478 time: 0:00:00:00 :
Expected count(s) (1500) [!!!FAILED!!!]
.pot CHK:nt-opencl guesses: 1478 time: 0:00:00:00 [PASSED]
form=ssha-opencl guesses: 0 unk unk : Expected
count(s) (1500) [!!!FAILED!!!]
sh: cannot open ./tst.pot: No such file
.pot CHK:ssha-opencl guesses: 0 unk unk [PASSED]
Some tests had Errors. Performed 6 tests.6 errors 1 errors reprocessing
the .POT files
Time used was 841 seconds
I enclose a patch that applies to Test Suite v1.11. With that applied,
you can test one [or more] formats "./jtrts.pl cryptmd5-opencl [...]",
or all OpenCL formats "./jtrts.pl opencl". Some of these problems may be
trivial, but hard to find without the test suite.
During manual testing I also saw other errors than the one reported
during the test suite run:
OpenCL error (CL_OUT_OF_HOST_MEMORY) in file (common-opencl.c) at line
(72) - (Error creating context)
OpenCL error (CL_OUT_OF_RESOURCES) in file (cryptmd5_opencl_fmt.c) at
line (197) - (clFinish error)
...and sometimes even just the self-test for raw-md5 failed (when not
running X):
Benchmarking: Raw MD5 [raw-md5-opencl]... FAILED (get_hash[0](4))
Maybe some/all of these problems are "caused" by my environment? BTW,
when I tried running this with no X server active, I could see some
spectacular "progress report" on the console screen: I assume John was
using GPU memory that was part of my frame buffer. Is this normal? Is it
bad?
Am I supposed to be able to run a dual screen X at the same time as
running OpenCL formats? John will just get less GPU memory? Too little?
magnum
View attachment "TestSuite1_11_OpenCL-formats.patch" of type "text/x-patch" (1230 bytes)
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