3

Is there a way of detecting a M1 mac in MATLAB? MATLAB has ismac but that presumably won't differentiate between processor types.

Jimbo
  • 2,886
  • 2
  • 29
  • 45

2 Answers2

4

New Answer: Tested on M1 Mac

My impression is that MATLAB is running through Rosetta 2, which means that the result of uname -m is actually x86_64, which does not help guard against calls to Intel targeting mex code.

Instead we'll ask for the kernel version and try to find ARM64

if ismac()
    [~,result] = system('uname -v');
    is_m1_mac = any(strfind(result,'ARM64'));
else
    is_m1_mac = false;
end

Note result above is on my computer : Darwin Kernel Version 21.5.0: Tue Apr 26 21:08:37 PDT 2022; root:xnu-8020.121.3~4/RELEASE_ARM64_T6000

Old Answer: Not correct

To detect the processor one can call to the system command line: Detect Apple Silicon from command line

Note, this has not been tested on a m1 mac ...

if ismac()
    [~,result] = system('uname -m');
    is_m1_mac = strcmp(strtrim(result),'arm64');
else
    is_m1_mac = false;
end

Note, this would help if you are running an older version of MATLAB, as MATLAB doesn't officially support M1 macs until 2020b update 3 ... https://www.mathworks.com/matlabcentral/answers/641925-is-matlab-supported-on-apple-silicon-macs

However, it is not clear to me that this would eventually detect execution of MATLAB natively vs via ROSETTA (when a native option actually exists).

Jimbo
  • 2,886
  • 2
  • 29
  • 45
0

Tested on M2 pro with R2022b (ARM beta):

system('uname -m')
arm64

ans =

     0

and

if ismac()
    [~,result] = system('uname -m');
    is_m1_mac = strcmp(strtrim(result),'arm64');
else
    is_m1_mac = false;
end

>> is_m1_mac

is_m1_mac =

  logical

   1
Henk Mutsaerts
  • 1
  • 2