How to increase memory available for arrays?
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I am running 64bits Windows and MATLAB R2019b.
When I type "memory", I get:
Maximum possible array: 2314 MB (2.427e+09 bytes) *
Memory available for all arrays: 2314 MB (2.427e+09 bytes) *
Memory used by MATLAB: 2061 MB (2.162e+09 bytes)
Physical Memory (RAM): 16250 MB (1.704e+10 bytes)
- The largest contiguous memory block found in the MATLAB virtual address space
- The total available system memory
So I can only assume that MATLAB is not able to allocate contiguous memory in its virtual address space that's more than 2GB...
Is this some limitation imposed by Windows 10 Home related to its heap manager?
Or how can I expand this value? Do I have to tweak with windows parameters somewhere?
This memory issue causes MATLAB to crash whenever I am plotting multiple "surf" figures, which rely on many large matrices...
The "Solve out of memory page" does not help, since I have the MATLAB preference set to not limit arrays according to RAM:
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/343090/image.png)
When I start MATLAB without JVM, I get
Maximum possible array: 2487 MB (2.608e+09 bytes) *
Memory available for all arrays: 2487 MB (2.608e+09 bytes) *
Memory used by MATLAB: 984 MB (1.031e+09 bytes)
Physical Memory (RAM): 16250 MB (1.704e+10 bytes)
So JVM is not the problem.
I am running MATLAB 9.7.0.1190202 (R2019b, 64bits) on Windows 10 Home (64bits), version 2004, build 19041.388
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James Tursa
2020년 8월 7일
If MATLAB actually crashes when calling surf for out of memory cases, you should submit a bug report. There shouldn't be a crash, just an out of memory error message.
답변 (1개)
Matt J
2020년 8월 7일
편집: Matt J
2020년 8월 7일
A simple solution might be to close other applications that might be consuming RAM. For example, closing Microsoft Outlook freed up almost 0.5 GB for me,
K>> memory
Maximum possible array: 18897 MB (1.981e+10 bytes) *
Memory available for all arrays: 18897 MB (1.981e+10 bytes) *
Memory used by MATLAB: 22442 MB (2.353e+10 bytes)
Physical Memory (RAM): 32654 MB (3.424e+10 bytes)
* Limited by System Memory (physical + swap file) available.
K>> memory
Maximum possible array: 19323 MB (2.026e+10 bytes) *
Memory available for all arrays: 19323 MB (2.026e+10 bytes) *
Memory used by MATLAB: 22434 MB (2.352e+10 bytes)
Physical Memory (RAM): 32654 MB (3.424e+10 bytes)
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