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Date: Mon, 6 Apr 2015 14:40:45 +0200
From: Agnieszka Bielec <bielecagnieszka8@...il.com>
To: john-dev@...ts.openwall.com
Subject: Re: [GSoC] John the Ripper support for PHC finalists
2015-04-06 11:58 GMT+02:00 Frank Dittrich <frank.dittrich@...lbox.org>:
>you replied to Solar Designer, but quoted one of my messages. Please
>stop doing this.
Sorry I'm not sure what you mean.
>Somehow in your test output these two lines (or some similar lines) are
>missing: [...]
I cut the output because I added some printfs
>What problems did you have? Did you mention them in any of your previous
>mails in a way that others could understand these problems?
I mentioned that I need to know the m_cost value before the kernel
compilation. I didn't mention about details because when I was trying with
--cost there was a lot of problems with that and all the
time I was discovering a new one
>> I can give a list of arguments why I did it in this way if you want
>Please do. May be even better would have been discussing it before you
>went ahead implementing this.
1.first of all --cost only chooses "good" hashes, if I want to read --cost
before the kernel compilation I need to use this
2015-04-04 21:08 GMT+02:00 Agnieszka Bielec <bielecagnieszka8@...il.com>:
>I've discovered that --cost modifies also fmt_test structure in fmt_main
>(but only with the --test flag!). I can take advantage of this.
It's only a trick like moving init() to set_key()
2.
2015-04-04 21:08 GMT+02:00 Agnieszka Bielec <bielecagnieszka8@...il.com>:
>If I change one hash in fmt_test to a wrong one
>I have
>./john --test --format="django-scrypt" --cost="14,8,1"
>Speed for cost 1 (N) of 14, cost 2 (r) of 8, cost 3 (p) of 1
>Raw: 403 c/s real, 14.0 c/s virtual
>./john django --format="django-scrypt" --cost="14,8,1"
>Self test failed (cmp_all(1))
>It's a bug? (auto tune for all hashes)
2015-04-05 0:01 GMT+02:00 Frank Dittrich <frank.dittrich@...lbox.org>:
>This is not a bug, but expected behavior.
this is wery bad for me because I need to compile the kernel again for
various values or choose the bigger one
3. When I add tunable functions and when I initialize everything in
reset() but not in init (like in opencl_mysqlsha1_fmt_plug.c)
- it crashes somewhere beyond my code.
If I have init normal - (not like in opencl_mysqlsha1_fmt_plug.c) it works
4.
2015-04-04 21:08 GMT+02:00 Agnieszka Bielec <bielecagnieszka8@...il.com>:
>I've discovered that --cost modifies also fmt_test structure in fmt_main
>(but only with the --test flag!). I can take advantage of this.
If I have the range of cost values here is a problem again
I need to
"compile the kernel again for
various values or choose the bigger one... or compile the kernel over
and over again"
this are most important reasons
_______________________________________________________________________
This list is only for my of pomelo-opencl using __private
memory. Already I've tested __global memory which is slow, __local which
is limited and __private memory also isn't good.
Big chunks on __private in reality are actually "virtual" __global and
__local memory. I read somewhere (I don't remember the link) that not
always graphics cards good cope with this and from here I have
OUT_OUT_RESOURCES in --dev=1 and in --dev=5 and --dev=6 for the bigger
values (but maybe I am wrong, maybe someone has an other idea).
I want now to experiment with __global and __local memory managed by
hand and we will see what happen.
I think that pomelo hash is really hard to implement using GPU
I uploaded my code (__private memory) to the branch "private_memory"
but it's rather a demo. I have some warnings but it's not important now
and we run
./john --test --format=pomelo-opencl --dev=3 --t_cost=4 --m_cost=4
john doesn't check if --t_cost and --m_cost is given now
_____________________________________________________________________
I'm including tests for __global memory and __private
I've added some printfs to know how many memory is used
http://pastebin.com/Rqe5yKsH
I'm wondering why on --dev=2 opencl using
global memory was fast, ~ 150k
Thanks
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