RAM_TOTAL get total physical RAM

get total physical RAM across operating systems https://docs.oracle.com/en/java/javase/21/docs/api/jdk.management/com/sun/management/OperatingSystemMXBean.html#getTotalPhysicalMemorySize()

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Inputs

Outputs

function [i, b] = ram_total(backend)
if nargin < 1
  backend = {'java', 'dotnet', 'python', 'sys'};
else
  backend = cellstr(backend);
end

i = uint64([]);

for j = 1:numel(backend)
  b = backend{j};
  switch b
    case 'dotnet'
      i = stdlib.dotnet.ram_total();
    case 'java'
      i = stdlib.java.ram_total();
    case 'python'
      if stdlib.matlabOlderThan('R2022a'), continue, end
      i = stdlib.python.ram_total();
    case 'sys'
      i = stdlib.sys.ram_total();
    otherwise
      error('stdlib:ram_total:ValueError', 'Unknown backend: %s', b)
  end

  if ~isempty(i)
    return
  end
end

end

%!assert (stdlib.ram_total() > 0)

Published with MATLAB® R2025b