Multi-GPU, multi-hash GRT BETA! For Linux... (beta1)

Discussion of the upcoming GPU accelerated rainbow table implementation
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Multi-GPU, multi-hash GRT BETA! For Linux... (beta1)

Postby Bitweasil » Sun Apr 24, 2011 3:34 am

Let's try this out.

GRTCrack-CPP has a tendency of segfaulting. I've left debug symbols in it. Please, if you can reproduce a segfault, run it in gdb and get me the stack trace/failure points! I can't reproduce it reliably.


THERE ARE COMMAND LINE DIFFERENCES!

GRTMerge now takes the "-m" argument to tell it how many megabytes to use. This should be roughly half your RAM, since it actually uses a ton more. It's a lot faster than the old one, but generates slightly different output. Still an open issue I'm working on...

GRTCrack is the big set of changes.

It now takes, instead of the "-s [hash]" argument, a "-f [hashfile]" argument.

The hashfile is a standard newline separated hash file.

It also right now ONLY SUPPORTS MD5 len 6-10. If it claims to do some other hash... it's lying. Seriously. MD5 ONLY! Still a work in progress, but I wanted to get it out there.

Feedback welcome!

//EDIT: Let's try this version out...
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Re: Multi-GPU, multi-hash GRT BETA! For Linux...

Postby blazer » Sun Apr 24, 2011 1:39 pm

yay multi hash.

All i can say is nice and... FIRST
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Re: Multi-GPU, multi-hash GRT BETA! For Linux...

Postby RIG » Mon Apr 25, 2011 4:14 pm

Great Job Bitweasel, but I get an CUDA error :

CUDA error in file "GRTCandidateHashesMD5.cu" in line 39 : invalid device symbol.

with the settings :

./GRTCrack-CPP -h MD5 -f test /output/*.grt
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Re: Multi-GPU, multi-hash GRT BETA! For Linux...

Postby Bitweasil » Mon Apr 25, 2011 4:40 pm

What GPU are you on? I'll take a look at that error tonight - I'm not around the source right now.
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Re: Multi-GPU, multi-hash GRT BETA! For Linux...

Postby RIG » Mon Apr 25, 2011 5:02 pm

I tested it with a NVIDIA... 240GT
9800GT
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Re: Multi-GPU, multi-hash GRT BETA! For Linux...

Postby Bitweasil » Tue Apr 26, 2011 2:11 am

That's a charset issue. What charset file were you using?

Post the full command line & I'll see if I can reproduce it.
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Re: Multi-GPU, multi-hash GRT BETA! For Linux...

Postby RIG » Tue Apr 26, 2011 8:13 am

I try it with this command line:

    user@computername:~/Desktop/GRTCrack-Multi$ ./GRTCrack-CPP -h MD5 -f md5 GRT-MD5-len6-fullcharset-perfect/*.grt
    Got 2 hashes!
    Processing GRT file GRT-MD5-len6-fullcharset-perfect/MD5-idx1-chr95-cl100000-perfect.grt

    Table version: 1
    Hash: MD5
    Password length: 6
    Table index: 1
    Chain length: 100000
    Num chains: 9915810
    Perfect table: Yes
    Charset length: 95
    Charset: !"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQR
    STUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~

    Elements: 2
    Elements per unit: 1
    Number of workunits: 2
    WU init complete
    Cuda error in file 'GRTCandidateHashesMD5.cu' in line 39 : invalid device symbol.
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Re: Multi-GPU, multi-hash GRT BETA! For Linux...

Postby Bitweasil » Tue Apr 26, 2011 2:55 pm

Weird.

What GPU are you using? And can you try it after a reboot in case the GPU memory is fragmented?
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Re: Multi-GPU, multi-hash GRT BETA! For Linux...

Postby RIG » Wed Apr 27, 2011 8:40 am

I tried it with a NVIDIA 240GT, a 9800GT and different tables (own creation) but same result.
The other GRT-Tools don't make any toubles.
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Re: Multi-GPU, multi-hash GRT BETA! For Linux...

Postby Bitweasil » Wed Apr 27, 2011 3:05 pm

Damn.

Alright, probably something stupid I'm doing with memory. I've got a block of time this weekend set out to sit down with valgrind, hopefully it'll fix it.
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