Possible Ways to Avoid "Out of Memory" Errors During Generating Permuted Maps At Group Level (N = 20) for TG-MVPA

[batiyilmaz]

Hi David,

I've wanted to kindly form this question to ask about certain ways to avoid "out of memory" errors for TG-MVPA whilst computing permuted maps at group level.

I have a relatively large dataset (20 participants) (but the size of it is relatively small: around 150 MB for each condition in total of 20 participants), for which I'm trying to compute the stats at group level. However, today I've encountered this error:

"

Permutation test (acc):

• Generating permuted maps at group level: Out of memory.

Error in mvpalab_computepermtest (line 23)
gpermmaps(:,:,i) = mean(permaps,3);

Error in mvpalab_permtest (line 54)
stats = mvpalab_computepermtest(cfg,results,permuted_maps);

Error in mvpalab_permtest (line 43)
stats.(fname) = mvpalab_permtest(cfg,res,pmap,fname);
"

Given all of this, I wanted to kindly ask whether it is possible to avoid this error and allocate memory more efficiently within the workflow of the toolbox.

Thank you for your time and help in advance.

Best,
Bati

P.S. The computer through which this operation was carried out has these device specifications:

• Installed RAM 8.00 GB
• 64-bit operating system x64-based processor
• Intel Core i7-2700 K @ 3.50GHz 3.50 GHz

[batiyilmaz]

I've solved this issue with a 16 GB RAM computer. It was about the device specifications, thank you!