[A51] test Kraken

Milinko Isakovic milinkoi at gmail.com
Tue Feb 23 12:16:25 CET 2016


Jan thank you for assistance, in setup and,


Currently we are facing issue with deka setup. so far we ware able to crack
keys with HD7900 series GPU. but issue is time required to crack one burst
or 100 bursts is approx 3 min
how can we reduce this time.

just for example if 1 gpu is used per burst then cant we use 4 GPU per
burst  to decrease lookup time. also currently I have 2 GPU with me but
time taken to crack is same.
here is my procedure
start paplon.py
start oclvankus.py
choose one gpu per instance and run 2 instance.
start one instance of delta_client.py
start cracking

now here are some example result of my crack

crack #0 took 110463 msec
crack #5 took 111005 msec
crack #2 took 113481 msec
crack #6 took 114020 msec
crack #18 took 115290 msec
crack #7 took 116799 msec
crack #9 took 117100 msec
crack #3 took 118306 msec
crack #4 took 118606 msec
crack #15 took 118906 msec
crack #13 took 119809 msec
crack #8 took 120348 msec
crack #16 took 120649 msec
crack #10 took 123359 msec
crack #19 took 124863 msec
crack #11 took 126129 msec
crack #14 took 127872 msec
crack #17 took 130940 msec
crack #12 took 137195 msec

if you can see the time is increasing as it moves with next burst.


i also checked in  bursts.samplesession.tar.gz it start with 45000ms and
ends with 65000 ms

now i will result of one gpu instance

crack #5 took 135398 msec
crack #0 took 135700 msec
crack #2 took 138767 msec
crack #15 took 140602 msec
crack #9 took 140905 msec
crack #6 took 141208 msec
crack #3 took 144273 msec
crack #4 took 144574 msec
crack #7 took 144874 msec
crack #16 took 146093 msec
crack #13 took 146395 msec
crack #8 took 147616 msec
crack #21 took 150978 msec
crack #14 took 152812 msec
crack #10 took 153114 msec
crack #19 took 153413 msec

there is very less difference in it


it will be good if one please share actual steps to take while  using multi
gpu.

In case of  adding for example 14 GPU, and speed will have point only in
rising burst in parallel: for example from 200 to 1000, or we cracking
speed for 200 burst in parallel will be decreasing, and how much it will
decrease?

Also I am wondering, with CPU rising what will happed?  In case I use
multiprocessor MB (4cpu or 8cpu), will speed for one burst will go down,
from current 20 second to 5-8 second  ?  Or only will be able to fish 8
bursts in 20 seconds ?

We are  trying to to get speed of 1 second for each burst... Is this
possible anyhow with DEKA ?  On what part we need to focus ?

Later we will have questions regarding cluster, but firstly we would like
to get maximum from one computer...




On Sun, Feb 21, 2016 at 3:03 PM, Jan Hrach <jenda at yakumo.hrach.eu> wrote:

> I think it looks OK now. I have raised QSIZE to 100. Looks like the queue
> management in Deka sucks :-/
>
> PS: your cracker did not find "21D142736909C3A5 @ 35 #1 (table:108)" from
> https://brmlab.cz/project/gsm/deka/deka-test (crack.txt in the linked
> tarball), the others are OK.
>
>
> On 21.2.2016 22:51, Milinko Isakovic wrote:
> > If you are still there /dev/sdg sould be now ok. I think it was cable
> issue...
> >
> > On Sun, Feb 21, 2016 at 9:29 PM, Jan Hrach <jenda at yakumo.hrach.eu
> <mailto:jenda at yakumo.hrach.eu>> wrote:
> >
> >     (ssh'ed there, installed htop and iotop)
> >
> >     This is because you try to crack only one burst at once. The kernel
> is designed in a way that it loads num_kernels * vector_size fragments at
> once, i.e., 4096*32 = 131072 fragments (one burst is 16320 fragments) and
> then time for one round is almost constant. So you need to crack as many
> bursts in parallel as to keep it fully saturated. If you are cracking only
> one burst, the CPU *is* faster. But if you submit for example 20 bursts at
> once (I would recommend even more, say up to 100), you will make the
> advantage of 2048 cores of your GPU.
> >
> >     PS: your /dev/sdg died, so currently it does not crack at all :-(
> >
> >
> >     On 21.2.2016 19:05, Milinko Isakovic wrote:
> >     > Hi to all,
> >     >
> >     > I tired deka, but seems to be a lot of problems. First of all, I
> had problem to install drivers (Debian Jessie) amd64,  at the end, finaly I
> did it somehow.
> >     >
> >     > Configuration is:
> >     >
> >     > 32 Gb ram
> >     > 2x 7970
> >     > 8x SAS disk
> >     > i7 cpu
> >     >
> >     > Main problem for me is that it seems to me that GPU cracking is
> not working or I do not know how to make an setup.
> >     >
> >     > Screenshots I am sending to you describing:
> >     >
> >     > 1-5.png  - GUP cracking  ---> 100+ sec
> >     > cpu1-5.ping CPU cracking ---> 18-19 sec
> >     >
> >     > Does anybody know where I am making mistake ?
> >     >
> >     >
> >     > Also I can give ssh to somebody if somebody would like to do tests
> / checkl where problem is>
> >     >
> >     > Regadrs
> >     > Milinko
> >     >
> >
> >     --
> >     Jan Hrach | http://jenda.hrach.eu/
> >     GPG CD98 5440 4372 0C6D 164D A24D F019 2F8E 6527 282E
> >
> >
> >
> >
> > --
> >
> > Milinko Isakovic, CEO
> > CS Network Solutions Limited
> >
> > 72 Blythe Road, West Kensington, London W14 0HB
> >
> >
> > London Switchboard: +442071933539
> > Belgrade Operations: +381112620152
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> >
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> >
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> --
> Jan Hrach | http://jenda.hrach.eu/
> GPG CD98 5440 4372 0C6D 164D A24D F019 2F8E 6527 282E
>



-- 

Milinko Isakovic, CEO
CS Network Solutions Limited

72 Blythe Road, West Kensington, London W14 0HB

London Switchboard: +442071933539
Belgrade Operations: +381112620152
Personal mobille:       +381666666666

Web: www.cs-networks.net
<http://www.facebook.com/smsanywhere>  <https://twitter.com/cs_networks>
<http://www.linkedin.com/company/cs-networks>
<http://www.youtube.com/csnetworks>
--------------------------

This message (including any attachments) is confidential and may be
privileged. If you have received it by mistake please notify the sender by
return e-mail and delete this message from your system. Any unauthorized
use or dissemination of this message in whole or in part is strictly
prohibited. Please note that e-mails are susceptible to change. CS Networks
shall not be liable for the improper or incomplete transmission of the
information contained in this communication nor for any delay in its
receipt or damage to your system.  CS Networks does not guarantee that the
integrity of this communication has been maintained nor that this
communication is free of viruses, interceptions or interference.
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