[A51] kraken with 5970 (2 GPU)

Bert Boshe bertboshe at gmail.com
Tue May 14 13:50:38 CEST 2013


Hi!

When i crack a burst with the Radeon HD 5870 (1GPU) it is faster
than using the Radeon HD 5970 (2GPU).

I expected the the HD 5970 doĆ­ng the job in half of the time.

Can anyone tell me what is wrong?

See the following:


RADEON HD 5870
====================================================================================================================================================
Kraken> Initialized CAL
CAL Runtime version 1.4.1741
Running on 1 GPUs
Num threads 1152
Running 256 rounds pr kernel invocation.
test

Cracking
001101110011000000001000001100011000100110110110011011010011110001101010100100101111111010111100000110101001101011
Found de6bb5e60617f95c @ 12  #0  (table:340)
Found 6fb7905579e28bfc @ 23  #0  (table:372)
crack #0 took 17007 msec

Kraken> test

Cracking
001101110011000000001000001100011000100110110110011011010011110001101010100100101111111010111100000110101001101011
Found de6bb5e60617f95c @ 12  #1  (table:340)
Found 6fb7905579e28bfc @ 23  #0  (table:372)
crack #1 took 9641 msec


RADEON HD 5970
====================================================================================================================================================
Kraken> Initialized CAL
CAL Runtime version 1.4.1741
Running on 2 GPUs
Num threads 1280
Running 256 rounds pr kernel invocation.
Num threads 1280
Running 256 rounds pr kernel invocation.
test

Cracking
001101110011000000001000001100011000100110110110011011010011110001101010100100101111111010111100000110101001101011
Found de6bb5e60617f95c @ 12  #0  (table:340)
Found 6fb7905579e28bfc @ 23  #0  (table:372)
crack #0 took 21454 msec

Kraken> test

Cracking
001101110011000000001000001100011000100110110110011011010011110001101010100100101111111010111100000110101001101011
Found de6bb5e60617f95c @ 12  #1  (table:340)
Found 6fb7905579e28bfc @ 23  #0  (table:372)
crack #1 took 18567 msec
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.srlabs.de/pipermail/a51/attachments/20130514/d859b18a/attachment.html>


More information about the A51 mailing list