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Message-ID: <20131030113912.GA26795@openwall.com>
Date: Wed, 30 Oct 2013 15:39:12 +0400
From: Solar Designer <solar@...nwall.com>
To: john-users@...ts.openwall.com
Subject: Re: FW: John 1.8.0 format options

Danis,

On Wed, Oct 30, 2013 at 01:19:24PM +0200, Danis Petkakis wrote:
> First of all thank you for your detailed answer. I saw the options for Openmp in the Makefile, but right
> now i'm using john-1.8.0 with --fork option. I have a recent version of ubuntu (13.10), so i guess i will be 
> fine concerning the latest libcrypt library used to compile john.

That's fine.  Like I said, you may obtain some speedup by going with
jumbo, but you don't have to.

> If i enabled the openmp flags in the 
> Makefile and built john again, do you think it would make a bigger difference compared to the way i'm
> using it right now (I'm using it with --fork option at the moment)?

Most likely, no.  You might find OpenMP more convenient (just one status
line instead of a line per core, etc.)

> Could you give an example of how I 
> should run john with OpenMP instead of --fork? Something like this (which i found in a different post) 
> " OMP_NUM_THREADS=4 ../run/john passwd" would suffice?

You don't have to specify OMP_NUM_THREADS explicitly, unless there is a
specific reason to do so.  You just run "./john passwd" (when you're in
the run directory).

Alexander

P.S. You happened to start a new thread with your reply, instead of
replying to the existing thread.  (This makes a difference e.g. for
those browsing the web-based archives of the list.)  Perhaps this
happened because you used the "forward" feature in your e-mail client,
instead of "reply".  Please use "reply" when replying.

Also, if you don't mind, please quote inline rather than top-post:

http://www.complang.tuwien.ac.at/anton/mail-news-errors.html
http://www.netmeister.org/news/learn2quote.html

Finally, you might want to reconfigure your e-mail client to wrap lines
at a length like 72.  You're now wrapping at a 100-something length.

I understand that not everyone is familiar with mailing list etiquette,
especially these days, hence I occasionally include bits of friendly
advice like this.

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