Memory usage of a function

I am trying to measure the memory usage of a function. I would like to compare the memory requirements for different methods of solving a linear system of equations. I am looking for a way of measuring it like this:

N = 100;
A = rand(N, N);
b = rand(N, 1);

mem1 = memory(sol = A \ b);

mem2 = memory(sol = sparse(A) \ b);

Answer 1

[KSSV]

N = 100;
A = rand(N, N);
b = rand(N, 1);
mem1 = A \ b ; 
mem2 = sparse(A) \ b ;
whos mem1 mem2

  Name        Size            Bytes  Class     Attributes

  mem1      100x1               800  double              
  mem2      100x1               800  double              

Answer 2

[Walter Roberson]

Use profile() to record memory use.

https://www.mathworks.com/help/matlab/performance-and-memory.html