% use https://se.mathworks.com/matlabcentral/fileexchange/33155-cpu-info (date: 16.06.2021)

% test access single node memory
t = tic;
tic
n = 200000;
Asp = sprand(n, n, 0.00001);
A = full(Asp); % should allocate about 298 GB
x = rand(n, 1);
s1 = sum(sum(Asp));
s2 = sum(sum(A));
assert(norm(s1-s2) < 1e-6)
toc


% test access full memory
t = tic;
tic
n = 1000000;
Asp = sprand(n, n, 0.00001);
A = full(Asp); % should allocate about 7.276 GB
x = rand(n, 1);
s1 = sum(sum(Asp));
s2 = sum(sum(A));
assert(norm(s1-s2) < 1e-6)
toc