[SciPy-user] fmin_cobyla hangs
Tue Sep 4 02:28:28 CDT 2007
W/o code sample we can't say anything.
Try scikits.openopt ALGENCAN or lincher solver (latter requires CVXOPT
installed http://www.ee.ucla.edu/~vandenbe/cvxopt/, former requires
ALGENCAN with Python connection installed, see
Get OpenOpt from svn:
svn co http://svn.scipy.org/svn/scikits/trunk/openopt openopt
(then see help(scikits.openopt.NLP))
However, afaik scipy server is down for now.
Christian K. wrote:
> sometimes when running fmin_cobyla it never returns but keeps the cpu load high.
> The last output (with iprint=2) is the following:
> The initial value of RHO is 1.000000E+00 and PARMU is set to zero.
> NFVALS = 1 F = 1.635286E+03 MAXCV = 5.335792E-02
> X =-2.000000E-02 9.600000E-02 2.120000E-01 3.280000E-01 4.440000E-01
> Increase in PARMU to 1.344559E+03
> Increase in PARMU to 4.872087E+04
> Does anybody know enough of the internals of fmin_cobyla to imagine what is
> going on? In case it helps, I will try to build a sample script/data package.
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