out of memory - matlab does not use available memory of system

hi all,

i get out of memory errors when running a complex image processing task in matlab.

checking the memory command:

>> memory

Maximum possible array: 3434 MB (3.600e+09 bytes) *

Memory available for all arrays: 3434 MB (3.600e+09 bytes) *

Memory used by MATLAB: 1129 MB (1.184e+09 bytes)

Physical Memory (RAM): 16158 MB (1.694e+10 bytes)

...so i have 16gb installed on my system --> correct

but matlab is only allowed to use 3.4gb? how can i change that?

first thought: did i only install a 32bit version of matlab?

>>ver

-----------------------------------------------------------------------------------------------------

MATLAB Version: 9.3.0.713579 (R2017b)

MATLAB License Number: removed ;-)

Operating System: Microsoft Windows 10 Enterprise Version 10.0 (Build 17763)

Java Version: Java 1.8.0_121-b13 with Oracle Corporation Java HotSpot(TM) 64-Bit Server VM mixed mode

-----------------------------------------------------------------------------------------------------

MATLAB Version 9.3 (R2017b)

and the mexext command:

>> mexext

mexw64

so it is 64bit, and i cannot use all my memory?

how can i fix that?

thanks

alex

Answer 1

[Raunak Gupta]

Hi,

This can be possible if you have set a limit on MATLAB array size limit with less than 100%. You can see the following documentation to update that setting and this should clear out the query.

https://www.mathworks.com/help/matlab/matlab_env/set-workspace-and-variable-preferences.html#bqxytks-1

Also this discussion can be useful.

[Alexander Meier]

hi,

thanks for the reply - i think there was a problem with windows running out of disk space, which caused many problems. since i cleaned up the disk and restarted the system it runs as it did before...

thanks

alex