[Eeglablist] How to make an ICA run in less than a week?

[Juan Kamienkowski]

Dear James,

We recently developed a GPU-based solution for Infomax ICA
implementation (CUDAICA) that, comparing with the original BLAS and
CUBLAS versions, obtains a 25x increase of performance for the ICA
calculation. This is a couple of hours instead a couple of days of
processing. This now available online (see
http://www.hindawi.com/journals/cin/2012/206972/ and
http://calamaro.exp.dc.uba.ar/cudaica/doku.php?id=start)

Federico Raimondo, Juan E. Kamienkowski, Mariano Sigman, and Diego
Fernandez Slezak "CUDAICA: GPU Optimization of Infomax-ICA EEG
Analysis" Computational Intelligence and Neuroscience. Volume 2012
(2012), Article ID 206972, 8 pages. doi:10.1155/2012/206972

We will be very glad if you want to try it. I sent another mail to the
list with more details a few days ago.

Best,

juan


On Thu, Jul 5, 2012 at 9:24 PM, James Schaeffer <schaefj3 at gmail.com> wrote:
> Dear eeglablist,
>
> I am running ICAs on 10 minutes of Biosemi EEG data, collected from 128
> channels, and sampled at 2048 Hz. However, the ICAs have been running for a
> few days without much progress. Two computers have 8G RAM and an Intel(R)
> Xeon(TM) CPU 2.80GHz. One has been running an ICA for 6 days and is on step
> 33; the other, for 4 days, and is on step 28. Another computer has 12G RAM
> and an Intel(R) Xeon(R) CPU 5110 @ 1.60GHz; it has been running for 3 days
> and is on step 60. All are running openSUSE 12.1 (x86_64), with eeglab
> version 10.2.2.4b. The 'free' command indicates that they are not using any
> swap space.  Should it be taking this long?  Is it possible that we have
> more than the one copy of the data in ram or that Matlab or Eeglab has
> placed something else in ram, or is busy with other processes? Is there
> anything I can do to speed up this process? Any help would be greatly
> appreciated.
>
> Thanks in advance,
> James
>
>
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-- 
Juan E Kamienkowski
Laboratorio de Neurociencia Integrativa
Departamento de Fisica, FCEN-UBA
Ciudad Universitaria, Pabellon I
(1428) Buenos Aires, Argentina
Phone: (54-11) 4576 3300 (282)
Fax: (54-11) 4576 3357
http://www.neurociencia.df.uba.ar/