2007/11/19, Jukka Nenonen <[log in to unmask]>:

> I will try to trace the cause of the problem.
> Can you send me the error message and the exact command line which
> caused the error?

Hi Jukka - I have been trying to investigate this a bit further:

We tried running it with the basic -f and -o flags plus -format float
and -movecomp options.

The problem seems to occur whenever -movecomp is involved (we
routinely use cHPI, so movecomp is always used). The laconic error
message  'program died to due signal 11, core dump disabled' does not
give much info. Without the movecomp, it seems to run OK (although I
can't comment on the correct execution).

I attempted at execting the operation in two steps (first sss, then
movecomp - the latter with -force flag) but am not sure it runs
correctly; at least in my test case it ran through the file and
concluded that 'all tags are marked bad, no output file produced!'.

Like a I said, ST option allows everything to be run at once, albeit
very slowly.

Would there be a workaround or, better still, a fix?

many thanks,
yury

>
> Yury Shtyrov wrote:
> > Hello-
> >
> > We have encountered another problem with the split (>2GB) raw data
> > files. The first part cannot be processed in maxfilter - it exists
> > with an error message. The second half goes OK though. Curiously,
> > using MaxST will take care also of the first part - but we are not
> > really keen on using MaxST on all our data.
> >
> > Anyone encountered this before and is there a fix?
> >
> > Thanks,
> > yury
> >
> > 2007/9/12, Matti Kajola <[log in to unmask]>:
> >> Hi Yury,
> >>
> >> The limitation is actually not in the operating system, but in the file
> >> format
> >> itself. It contains internal 32 bit references, so if you create files
> >> larger than 2GB
> >> you end up breaking its internal structure. The splitted fiff files do have
> >> references to adjacent files, but so far no analysis software is able to
> >> follow
> >> them.
> >>
> >> So currently there is no way to create over 2GB fiff files. Sorry.
> >>
> >> Matti K.
> >>
> >> Yury Shtyrov wrote:
> >>
> >>> Hello -
> >>>
> >>> Can anyone recommend a method to join 2 raw fiff-files? We are in the
> >>> unlucky situation when our files are bigger than 2G, and the
> >>> Acquisition HP splits them in parts (a pretty annoying thing actually,
> >>> given that most modern OS's don't have this limit). The acq manual
> >>> mentions this issue, but does not suggest any remedies.
> >>>
> >>> Many thanks for any suggestions!
> >>>
> >>> Cheers,
> >>> -yury-
> >>>
> >>>
> >>
> >> --
> >>  Matti Kajola
> >>  Software Development Manager, Elekta Neuromag Oy
> >>  Mailing address: P.O.Box 68, FIN-00511 Helsinki, Finland
> >>  Tel. +358 9 756 240 80 (direct), Fax  +358 9 756 240 11
> >>  Email: [log in to unmask]
> >>
>
>
>
>


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