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Date: Mon, 14 Nov 2016 15:03:37 +0100
From: Luis Rocha <luiscrocha@...il.com>
To: john-users@...ts.openwall.com
Subject: Loading high number of hashes on GPU

Hi,

Not sure if I'm doing something wrong but having hard time to load high
number of hashes on GPU for raw-sha1.

I have 20M sha1 hashes that I'm trying to load. The GPU has 4Gb RAM.

$./john
John the Ripper 1.8.0-jumbo-1-5344-gefae4e5+ OMP [linux-gnu 64-bit AVX2-ac]


$./john 20M.hashes --wordlist=uniqwords  --pot=20M.pot
--format=raw-sha1-opencl --session=gpu  --fork=2 --rules:Jumbo

No dupe-checking performed when loading hashes.
Using default input encoding: UTF-8
Loaded 20000000 password hashes with no different salts (Raw-SHA1-opencl
[SHA1 OpenCL])
Remaining 5347239 password hashes with no different salts
Node numbers 1-2 of 2 (fork)
Device 0: Hawaii
Device 1: Hawaii
/
Progress is too slow!! trying next table size.
\
Progress is too slow!! trying next table size.

Progress is too slow!! trying next table size.

(..)

This message keeps going and going (30m at least) .. is there anything I
could do? or is there some limit on the # of hashes (or wordlist size) that
can be loaded using GPU?
The wordlist is 200Mb.I tried with 5M hashes and the same behavior. I'm now
trying with 1M .. but seems stuck as well...

Thanks
Luis

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