[RBFOpt] run error

[Giacomo Nannicini]

Hi Damir,
please read the installation instructions:
https://github.com/coin-or/rbfopt
You need to install bonmin and iptopt. Thanks.

Giacomo

On Wed, Apr 17, 2019 at 10:26 AM Damir Devetak <ddevetak at gmail.com> wrote:
>
>
>
>
> Hello,
>
>
> I began testing out the optimization package from git; the simple example of
>
> import rbfopt
> import numpy as np
> def obj_funct(x):
>   return x[0]*x[1] - x[2]
> ......
>
>
> gives,
>
>  Iter  Cycle  Action             Objective value      Time      Gap
>   ----  -----  ------             ---------------      ----      ---
>      0      0  Initialization           -0.782797      0.00   100.00 *
>      0      0  Initialization           59.515133      0.01   100.00
>      0      0  Initialization           20.000000      0.01   100.00
>      0      0  GlobalStep               -9.831245      0.05   100.00 *
>      1      0  GlobalStep                0.454536      0.08   100.00
>      2      0  GlobalStep               -9.933694      0.12   100.00 *
>      3      0  GlobalStep               -8.291156      0.16   100.00
>      4      0  GlobalStep               -9.988590      0.20   100.00 *
> Traceback (most recent call last):
>   File "test.py", line 25, in <module>
>     val, x, itercount, evalcount, fast_evalcount = alg.optimize()
>   File "/usr/lib/python2.7/site-packages/rbfopt/rbfopt_algorithm.py", line 749, in optimize
>     self.optimize_serial(pause_after_iters)
>   File "/usr/lib/python2.7/site-packages/rbfopt/rbfopt_algorithm.py", line 986, in optimize_serial
>     self.node_is_noisy)
>   File "/usr/lib/python2.7/site-packages/rbfopt/rbfopt_algorithm.py", line 2267, in local_step
>     node_pos[fmin_index])
>   File "/usr/lib/python2.7/site-packages/rbfopt/rbfopt_aux_problems.py", line 278, in minimize_rbf
>     if (not opt.available()):
>   File "/usr/lib64/python2.7/site-packages/pyomo/opt/base/solvers.py", line 99, in available
>     raise pyutilib.common.ApplicationError("Solver (%s) not available" % str(self.name))
> pyutilib.common._exceptions.ApplicationError: Solver (bonmin) not available
>
>
>
> Looking at version requires this is fine, any advice?
>
>
> cheers, Damir Devetak
>
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