Slow performance on traditional des

[truekonrads]

Hello,

I have poor performance on traditional DES encryption. Cards are AMD Radeon 7900 HD series:


Hashes: 1281 total, 1096 unique salts, 1280 unique digests
Bitmaps: 14 bits, 16384 entries, 0x00003fff mask, 65536 bytes
Workload: 16 loops, 8 accel
Watchdog: Temperature abort trigger disabled
Watchdog: Temperature retain trigger disabled
Device #1: Tahiti, 2048MB, 1000Mhz, 32MCU
Device #2: Tahiti, 2048MB, 1000Mhz, 32MCU
Device #1: Kernel ./kernels/4098/m1500_a3.Tahiti_1268.1_1268.1 (VM).kernel (3446
40 bytes)
Device #1: Kernel ./kernels/4098/markov_le_plus_v1.Tahiti_1268.1_1268.1 (VM).ker
nel (88956 bytes)
Device #1: Kernel ./kernels/4098/bzero.Tahiti_1268.1_1268.1 (VM).kernel (30444 b
ytes)
Device #2: Kernel ./kernels/4098/m1500_a3.Tahiti_1268.1_1268.1 (VM).kernel (3446
40 bytes)
Device #2: Kernel ./kernels/4098/markov_le_plus_v1.Tahiti_1268.1_1268.1 (VM).ker
nel (88956 bytes)
Device #2: Kernel ./kernels/4098/bzero.Tahiti_1268.1_1268.1 (VM).kernel (30444 b
ytes)

[s]tatus [p]ause [r]esume [b]ypass [q]uit =>
Session.Name...: oclHashcat-plus
Status.........: Running
Input.Mode.....: Mask (?l?l?l?l?l?d?d?d) [8]
Hash.Target....: File (C:\xxx\hashes.txt)
Hash.Type......: descrypt, DES(Unix), Traditional DES
Time.Started...: Mon Oct 07 10:39:07 2013 (6 secs)
Time.Estimated.: Wed Oct 09 08:36:11 2013 (1 day, 21 hours)
Speed.GPU.#1...: 36922 H/s
Speed.GPU.#2...: 36905 H/s
Speed.GPU.#*...: 73827 H/s
Recovered......: 0/1280 (0.00%) Digests, 0/1096 (0.00%) Salts
Progress.......: 493092864/13021988096000 (0.00%)
Rejected.......: 0/493092864 (0.00%)

[s]tatus [p]ause [r]esume [b]ypass [q]uit =>

Benchmarks here show that I should be getting KH/s not plain H/s:

http://hashcat.net/oclhashcat-plus/

[atom]

The speed is OK, more or less.

36922 * 1096 = 40466 KH/s

You should be able to get around 60, try -n 160 -u 1024

[truekonrads]

Atom,

Ah, that explains it then. With your suggested options I'm getting this much - looks OK?

Session.Name...: oclHashcat-plus
Status.........: Running
Input.Mode.....: Mask (?l?l?l?l?l?d?d?d) [8]
Hash.Target....: File (C:\abc)
Hash.Type......: descrypt, DES(Unix), Traditional DES
Time.Started...: Mon Oct 07 11:02:51 2013 (1 min, 3 secs)
Time.Estimated.: Wed Oct 09 00:30:30 2013 (1 day, 13 hours)
Speed.GPU.#1...: 63203 H/s
Speed.GPU.#2...: 25281 H/s
Speed.GPU.#*...: 88484 H/s
Recovered......: 0/1280 (0.00%) Digests, 0/1096 (0.00%) Salts
Progress.......: 6106906624/13021988096000 (0.05%)
Rejected.......: 0/6106906624 (0.00%)

[atom]

Thats very good for the first card, but not for the 2nd. Looks like GPU bios clocked it down due to heat.

[truekonrads]

Just an update - it seems to have stabilised at:

Speed.GPU.#1...: 74013 H/s
Speed.GPU.#2...: 74011 H/s
Speed.GPU.#*...: 148.0 kH/s