CODEWITHSUNDEEP
matlab
D.B.
D.B.

Reputation: 137

How to store giant matrix in matlab

I'm using a matlab script to create and store a large matrix of floating point numbers. When I tried running this program on my personal laptop, the program ended hours later with the message 'out of memory'. Supposedly, Matlab has a limit for the maximum-sized array it can store, which makes sense.

My question is: how to store large matrix in matlab? Specifically, I'm using a 64-bit linux OS, and I need to store a 5-6 GB matrix.

Upvotes: 0

Views: 86

Answers (1)

C.B.
C.B.

Reputation: 80

I am not an expert in this, but as I understand it the most simple solution would be to get more RAM. However, you could try to check the available memory at the time of the error with

dbstop if error 
memory

This should tell you how much Memory is available for Matlab, how much is currently used and how large your biggest array can be. If you exceed this I don't think there is a software solution for that besides storing the data in multiple smaller files.

If you get the "Out of memory: Java Heap Space" error you can increase the memory which is available for Java under (Home -> Preferences -> General -> Java Heap Memory)

Also check if your array side is limited to a certain percentage of your available memory under (Home -> Preferences -> Workspace -> MATLAB array size limit) and set it to 100%.

Similar question in Matlab forum

Upvotes: 2

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