Show memory options in Matlab working on Mac platform
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I am running Matlab R2012b (64 bit) on a Mac OS (version 10.8.2) computer. I am working with large arrays and like to know the memory usage by Matlab. I have tried 'memory' before on Windows platform and it always worked perfectly ... But when I typed 'memory' in the workspace, it showed the following error
Error using memory
Function MEMORY is not available on this platform. "
Can anyone help me figure out the problem... When I typed 'help memory' it displayed all information about memory function similar to any help function. Also I can see the function 'memory' in the Matlab documentation which comes along with Matlab... but when I typed 'memory' in the workspace, it showed me an error....
Any help will be greatly appreciated ...
Walter Roberson 2013 年 6 月 11 日
Expand the Tips at the bottom to see,
The memory function is currently available on Microsoft® Windows systems only.
And unfortunately you will also find that feature('memstats') is only on MS Windows as well. There is no equivalent functionality in MATLAB for OS-X or Linux.
You can switch to a terminal window and use "top" at the shell prompt to have a look at memory stats.
その他の回答 (2 件)
Michael Burke 2020 年 1 月 27 日
I created a simple function for this:
% This function will return the memory used by MATLAB on the MAC
%% First get the version of MATLAB
curVer = version('-release');
%% get the PID for MATLAB
sysStr = ['ps -o ppid,command |grep ',curVer,'.app'];
[status,verStr] = system(sysStr);
if (status ~= 0)
error('MATLAB was not found: That is odd since you are in MATLAB');
%% Get where the string is located
% Format looks like: interested in PPID
% PPID COMMAND
% 4151 /Applications/MATLAB_R2019b.app/bin/maci64/matlab_helper /dev/ttys000 yes
slash = findstr('/',verStr);
pidStr = verStr(1:slash(1)-1);
%% Now get the memory string
sysStr = ['top -pid ',pidStr,' -l 1 -stats MEM'];
[status,info] = system(sysStr);
if (status ~= 0)
error('Invalid PID provided')
% now parse out the memory
memLoc = findstr(info,'MEM');
MEM = info(memLoc+5:end-1);
fprintf('Total memory used: %s\n',MEM);