Hi - yes it may well be that FILM needs more swap than you have for these
huge files. Try increasing the swap to say 3GB. In general for such huge
data, you may need a newer computer to get reasonable performance.
By the way, why is your data so big? What are the matrix dimensions and
number of times points?
Regards, Steve.
On Tue, 2 Dec 2003, Juanjo Lull _UPV wrote:
> Hello everybody,
> I am about one month since I began working with FSL in order to analyze some
> fMRI studies.
> The problem I have now is that FEATworks fine with not very big files BUT
> with big files it doesn't.
> By big I mean files of 300/550 megabytes. I have got a computer with 512 MB
> RAM, a swap space of 1'2GB and a hard disk with 30 GB and some empty.
>
> Now I explain a little more my problem: until now I tested FSL with a study
> file (analyze format, one .hdr file and one .img file) of 550MB in a
> computer with no more than 2GB free disk space and about 500 MB swap space.
> It stopped while trying to apply FLIRT, giving a signal. I believe it was a
> "not enough swap space" problem.
> But now I have tested an image of 330MB in a computer with 1'2GB swap space,
> 512MB RAM and hard disk space enough. Now my problem is that the tools
> generate the prefiltered func_data but they do not generate any pe*.hdr!!!
> So in the report.html you can see the registration part and the design
> matrix but no images about stats because there are no test images.
> I can send you the report if it can be of valuable information.
> Thanx in advance,
> Juanjo Lull
> Medical Informatics Group - UPV
>
Stephen M. Smith DPhil
Associate Director, FMRIB and Analysis Research Coordinator
Oxford University Centre for Functional MRI of the Brain
John Radcliffe Hospital, Headington, Oxford OX3 9DU, UK
+44 (0) 1865 222726 (fax 222717)
[log in to unmask] http://www.fmrib.ox.ac.uk/~steve
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