FAQ Answers

Which version of the toolbox should I use?

For SPM 2 use the version 1.xx branch. For SPM 5 use the version 2.xx branch of the toolbox.

Where can I get support?

Support tracking is is hosted at SourceForge.net and can be accessed here (registration required). Another good source of information is the SPM mailing list.

Where do I report bugs?

Bug and issue tracking is hosted at SourceForge.net and can be accessed here (registration required).

How can I suggest changes?

Feature tracking is hosted by SourceForge.net and can be accessed here (registration required).

How long time will it take for a calculation?

For 2-dimensional analysis expect 5 to 25 minutes depending on size of the data set, the CPU speed and the amount of memory (RAM). For 3-dimensional analysis expect 0.5 up to 1.5 hours.

How can I improve performance?

Run the toolbox on a computer having a large amount of memory (1.5 - 2 GB RAM). The CCA-fMRI toolbox utilize memory mapped files and other techniques to limit the impact on the memory usage. By doing so it is possible to perform 3D calculations on a more modest hardware platform. The price to pay is that significant amount of the data has to be temporarily stored on disc, thereby extended the calculation time. By having a large amount of memory the need for temporary disc storage is reduced, hence increased performance.

Does the toolbox support multicore/SMP?

Yes it does using Matlab version 7.4 and above. However, owing to the nature of the CCA-algorithm and Matlab's limited support for multicore/SMP there will probably not be any performance gain. There is actually a significant chance the performance will suffer from enabling multicore/SMP in Matlab.