Travis Oliphant wrote:
Nils Wagner wrote:
Arnd Baecker wrote:
just to report something positive with my (almost;-) daily build on 64Bit:
With '0.5.0.2012' **all** tests pass on 64 Bit (apart from the well-known ndimage one).
Best, Arnd
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On 32 bit there is still one failure but I cannot reproduce it on a 64 bit system. Why ?
I don't know. I looked at it a bit, but couldn't see anything obvious.
But, since you have access to both systems you are in a great position to figure out why it is failing on 32-bit systems. Insert some print-statements in the fmin_cobyla code (the calcfc function might be a good place) and compare the outputs on the two systems when you run just that test.
It would be great if you could help track it down.
-Travis
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Let's start with the example in test_cobyla.py function = lambda x: x[0]**2 + abs(x[1])**3 con1 = lambda x: x[0]**2 + x[1]**2 - 25 con2 = lambda x: -con1(x) I guess it is taken from a book on optimization. Is that true ? A reference would be fine. cons -- a sequence of functions that all must be >=0 (a single function if only 1 constraint) The first constraint reads x^2 + y^2 -25 \ge 0 The second constraint is -x^2-y^2+25 \ge 0 or x^2+y^2 -25 \le 0 Does that mean that we can combine both inequality constraints to one equality constraint - a circle with radius 5 and center in (x=0,y=0)? Nils