That's right, I'm using a macbook pro - typical analysis is maybe
20-30 subjects with one session each, 200-300 vols each. Pre-proc is
all sequential, so that's not an issue and Mac OS is pretty good at
swapping to disk if needed
hth
Christian
On 3 Dec 2007, at 16:10, lingling pu wrote:
> Thank you Christian for your information. It's very helpful. I
> guess your laptop is not a windows OS?
> And would you please let me know the scale of the analysis you
> usually run on your laptop? For example, how many subjects, how many
> sessions for each subject, and how many volumes for each session etc.
>
> Thank a lot!
> Lingling
> ----- Original Message ----
> From: Christian F. Beckmann <[log in to unmask]>
> To: [log in to unmask]
> Sent: Friday, November 30, 2007 11:13:06 AM
> Subject: Re: [FSL] melodic memory requirement
>
> Hi
>
> I can do full tensor analysis on a laptop with 4GB - will largely
> depend on how well your OS handles mem requirements.
> hope this helps
> christian
>
>
>
> On 30 Nov 2007, at 17:55, lingling pu wrote:
>
> > Thank you Steve, how much RAM would you suggest?
> >
> > Lingling
> >
> > ----- Original Message ----
> > From: Steve Smith <[log in to unmask]>
> > To: [log in to unmask]
> > Sent: Friday, November 30, 2007 1:58:45 AM
> > Subject: Re: [FSL] melodic memory requirement
> >
> > Hi - yes, if you are running large-memory processes such as multi-
> > subject ICA then you definitely should not be using a Windows
> machine.
> > We would recommend a 64-bit Linux or Mac desktop.
> >
> > Cheers.
> >
> >
> >
> > On 29 Nov 2007, at 16:15, lingling pu wrote:
> >
> > > Dear FSLers,
> > >
> > > I was trying to run a single session ICA using melodic. I have 199
> > > volumes for the subject. I am using a windows XP with VMware, The
> > > memory allocated to it is 1G RAM, 2G Swap.
> > > Melodic fails with an error message "Normalising by voxel-wise
> > > variance ... terminate called after throwing an instance of
> > > 'std::bad_alloc'". So I am guessing the problem is not enough
> > > memory. Since it crashed, I don't know how much memory it would
> > > require. Can anyone give me an idea about this?
> > >
> > > Also this is just an initial step, the ultimate analysis I want to
> > > do is a group ICA using multi-session tensor ICA. I have a group
> of
> > > 11 subjects, each subject has 3 sessions. I guess that would
> > > be quite demanding on the memory etc. I might need to get a new
> > > machine, any suggestions about the specs?
> > >
> > > Thanks a lot!
> > >
> > > Lingling
> > >
> > > Be a better pen pal. Text or chat with friends inside Yahoo! Mail.
> > > See how.
> >
> >
> >
> ---------------------------------------------------------------------------
> > Stephen M. Smith, Professor of Biomedical Engineering
> > Associate Director, Oxford University FMRIB Centre
> >
> > FMRIB, JR 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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