Search rate = 0.0 ; why ?

[lopi]

Hello,

Here is my command line :

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CUDA-Multiforcer.exe -h MD5 -f ../hash.txt --min=0 --max=5 -c charsets\charsetfile -o pws.txt

I get :

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Cryptohaze.com CUDA Multiforcer (multiple hash brute forcer)
by Bitweasil
Version 0.72, length 0-14
Currently supported hash types: MD5 FASTMD5 MD4 FASTMD4 NTLM FASTNTLM SHA1 FASTS
HA1
Hash type: MD5
CUDA Device Information:
Device 0: "GeForce 8400 GS"
  Number of cores:                               8
  Clock rate:                                    1.40 GHz
  Performance Number:                            1400
  Note: Performance number is clock in mhz * core count, for comparing devices.
Single charset loaded.
Loading & sorting hashes.  This may take a while.
Hashes loaded (15 hashes)
You may want to consider the FAST[hash] option if it exists.
Launching CPU kernel for password length 0
Launching kernel for password length 1

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Compute done: Reference time 0.1 seconds
Stepping rate: 0.0M MD4/s
Search rate: 0.0M NTLM/s

Launching kernel for password length 2


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Compute done: Reference time 0.2 seconds
Stepping rate: 0.0M MD4/s
Search rate: 0.2M NTLM/s

Launching kernel for password length 3


------------------------------------------

Compute done: Reference time 0.2 seconds
Stepping rate: 0.8M MD4/s
Search rate: 12.1M NTLM/s

Launching kernel for password length 4


------------------------------------------

Compute done: Reference time 1.5 seconds
Stepping rate: 4.9M MD4/s
Search rate: 74.2M NTLM/s

Launching kernel for password length 5
Done: 6.98%  Step rate: 0.0M/s Search rate: 0.0M/sec

The last line, why 0.0M/sec ?!

Thank you for help.

[Bitweasil]

Run it with the '-v' switch, but most likely you're on Vista or Win7. They have a longer kernel launch time, and it's possible that the algorithm couldn't drop the work per kernel invocation low enough to actually achieve the target (which, by default, is 50ms).

Try the following for your card:

"-- threads 128 --blocks 16 -m 100" - it may lag your display more, but should work.

... you *do* realize that CPU brute forcers will be significantly faster than your video card, right?

[lopi]

Thank you for fast reply.

I have Vista 64bits.
Yes it works better with your options ! Thanks.

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Launching kernel for password length 5
Done: 97.18%  Step rate: 13.7M/s Search rate: 205.8M/sec

you *do* realize that CPU brute forcers will be significantly faster than your video card, right?

Do you mean my video card is not enough good/fast ?
I think 205M/sec is better than my CPU !

[Bitweasil]

It's actually stepping through at 13.7M/sec - you just have multiple hashes to search for. 13.7M is how fast it's searching through password space, the 200M number is just that times the number of hashes.

*jingles the donate button on the front of the site* Feel free to donate if you find the tool useful. I'd like to build a new dev box that lets me target newer systems.

[Bitweasil]

Do you mean my video card is not enough good/fast ?

Pretty much. The low end ones are useful for some things, but I mostly target things like the GTX260+ cards, and am tuning for Fermi right now (the GTX 470s/480s).