Single precision matrix inversion is not reproducible in Squeak on MacOSX

[nicolas-cellier-aka-nice]

Try this snippet:

(10 to: 100) detect: [:k |
    a := LapackSGEMatrix rows: k columns: k.
    a fillRandUniform.
    x := ((1 to: 100) collect: [:i | a reciprocal]) asSet asArray.
    x size > 1]

It will answer 32 on MacOSX in Squeak/Pharo (and I got 68 in 32 bits Visualworks 7.7nc).
This is due to Accelerate.framework library itself: it may return different results for different data alignments.

See http://smallissimo.blogspot.fr/2017/03/chasing-smallapack-inversion-bug.html for more details.