[Octave-bug-tracker] [bug #53912] make check hangs system

[Rik]

Follow-up Comment #5, bug #53912 (project octave):

Separately, I just came across this as well.  Just running 'test gmres' gives
a failure for me


octave:2> test gmres
***** test
 dim = 100;
 A = spdiags ([[1./(2:2:2*(dim-1)) 0]; 1./(1:2:2*dim-1); ...
 [0 1./(2:2:2*(dim-1))]]', -1:1, dim, dim);
 A = A'*A;
 b = rand (dim, 1);
 [x, resvec] = gmres (@(x) A*x, b, dim, 1e-10, dim,...
                      @(x) x./diag (A), [], []);
 assert (x, A\b, 1e-9*norm (x, Inf));
 [x, flag] = gmres (@(x) A*x, b, dim, 1e-10, 1e6,...
                    @(x) diag (diag (A)) \ x, [], []);
 assert (x, A\b, 1e-9*norm (x, Inf));
 [x, flag] = gmres (@(x) A*x, b, dim, 1e-10, 1e6,...
                    @(x) x ./ diag (A), [], []);
 assert (x, A\b, 1e-7*norm (x, Inf));
!!!!! test failed
out of memory or dimension too large for Octave's index type


I used hg bisect to locate the same cset as Mike as the source of the
problem.


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