The post on http://undocumentedmatlab.com/blog/undocumented-profiler-options/ describes an undocumented option of the Matlab profiler that allows for measuring memory bottlenecks.
In short, you switch it on with
profile -memory on;
profile('-memory','on'); % alternative
It is now possible to follow the FieldTrip SVN updates on twitter.
See http://twitter.com/fieldtriptoolbx
In a recent meeting with the SPM developers, we discussed parallel computing using the Matlab distributed computing toolbox, Star-P, Sun Grid Engine, and other batch systems that can be linked to Matlab. These are all limited in their usefulness for the typical neuroimaging research setting in that they are based on a centralized job distribution system. That may work fine on a large cluster with a centralized configuration and system administration, but even then the usefullness is limited because all input and output data (which are typically large) have to be send over the network twice: first to the job manager, then to the compute node (and vice versa for the results).
To resolve some of these problems, I came up with the idea of peer-to-peer distributed computing in Matlab. The full description can be found on http://fieldtrip.fcdonders.nl/development/peer
roy are discussing.
roy 13:16 on August 4, 2011 Permalink
how do i switch it off?
Robert 08:01 on August 15, 2011 Permalink
% MEMPROFILE ON starts the profiler and clears previously recorded
% profile statistics.
%
% MEMPROFILE OFF stops the profiler.
%
% MEMPROFILE RESUME restarts the profiler without clearing
% previously recorded memory statistics.
%
% MEMPROFILE CLEAR clears all recorded profile statistics.
%
% STATS = MEMPROFILE(‘INFO’) returns a structure containing the
% current profiler statistics.