[RBFOpt] run error

[Damir Devetak]

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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