def _perform_queue(self, ah, *args, **kwds):
"""
Perform the queue operation. This method returns the ActionHandle,
and the ActionHandle status indicates whether the queue was successful.
"""
solver = kwds.pop('solver', kwds.pop('opt', None))
if solver is None:
raise ActionManagerError(
"No solver passed to %s, use keyword option 'solver'" %
(type(self).__name__))
if not isinstance(solver, str):
solver_name = solver.name
if solver_name == 'asl':
solver_name = \
os.path.basename(solver.executable())
else:
solver_name = solver
solver = None
#
# Handle ephemeral solvers options here. These
# will override whatever is currently in the options
# dictionary, but we will reset these options to
# their original value at the end of this method.
#
user_solver_options = {}
# make sure to transfer the options dict on the
# solver plugin if the user does not use a string
# to identify the neos solver. The ephemeral
# options must also go after these.
if solver is not None:
user_solver_options.update(solver.options)
_options = kwds.pop('options', {})
if isinstance(_options, str):
_options = OptSolver._options_string_to_dict(_options)
user_solver_options.update(_options)
user_solver_options.update(
OptSolver._options_string_to_dict(kwds.pop('options_string', '')))
# JDS: [5/13/17] The following is a HACK. This timeout flag is
# set by pyomo/scripting/util.py:apply_optimizer. If we do not
# remove it, it will get passed to the NEOS solver. For solvers
# like CPLEX 12.7.0, this will cause a fatal error as it is not
# a known option.
if user_solver_options.get('timelimit', 0) is None:
del user_solver_options['timelimit']
opt = SolverFactory('_neos')
opt._presolve(*args, **kwds)
#
# Map NEOS name, using lowercase convention in Pyomo
#
if len(self._solvers) == 0:
for name in self.kestrel.solvers():
if name.endswith('AMPL'):
self._solvers[name[:-5].lower()] = name[:-5]
if solver_name not in self._solvers:
raise ActionManagerError(
"Solver '%s' is not recognized by NEOS. "
"Solver names recognized:\n%s" %
(solver_name, str(sorted(self._solvers.keys()))))
#
# Apply kestrel
#
# Set the kestrel_options environment
#
neos_sname = self._solvers[solver_name].lower()
os.environ[
'kestrel_options'] = 'solver=%s' % self._solvers[solver_name]
#
# Set the <solver>_options environment
#
solver_options = {}
for key in opt.options:
solver_options[key] = opt.options[key]
solver_options.update(user_solver_options)
options = opt._get_options_string(solver_options)
if not options == "":
os.environ[neos_sname + '_options'] = options
#
# Generate an XML string using these two environment variables
#
xml = self.kestrel.formXML(opt._problem_files[0])
(jobNumber, password) = self.kestrel.submit(xml)
ah.job = jobNumber
ah.password = password
#
# Cleanup
#
del os.environ['kestrel_options']
try:
del os.environ[neos_sname + "_options"]
except:
pass
#
# Store action handle, and return
#
self._ah[jobNumber] = ah
self._neos_log[jobNumber] = (0, "")
self._opt_data[jobNumber] = (opt, opt._smap_id, opt._load_solutions,
opt._select_index,
opt._default_variable_value)
self._args[jobNumber] = args
return ah
def _perform_queue(self, ah, *args, **kwds):
"""
Perform the queue operation. This method returns the ActionHandle,
and the ActionHandle status indicates whether the queue was successful.
"""
solver = kwds.pop('solver', kwds.pop('opt', None))
if solver is None:
raise ActionManagerError(
"No solver passed to %s, use keyword option 'solver'"
% (type(self).__name__) )
if not isinstance(solver, six.string_types):
solver_name = solver.name
if solver_name == 'asl':
solver_name = \
os.path.basename(solver.executable())
else:
solver_name = solver
solver = None
#
# Handle ephemeral solvers options here. These
# will override whatever is currently in the options
# dictionary, but we will reset these options to
# their original value at the end of this method.
#
user_solver_options = {}
# make sure to transfer the options dict on the
# solver plugin if the user does not use a string
# to identify the neos solver. The ephemeral
# options must also go after these.
if solver is not None:
user_solver_options.update(solver.options)
_options = kwds.pop('options', {})
if isinstance(_options, six.string_types):
_options = OptSolver._options_string_to_dict(_options)
user_solver_options.update(_options)
user_solver_options.update(
OptSolver._options_string_to_dict(kwds.pop('options_string', '')))
# JDS: [5/13/17] The following is a HACK. This timeout flag is
# set by pyomo/scripting/util.py:apply_optimizer. If we do not
# remove it, it will get passed to the NEOS solver. For solvers
# like CPLEX 12.7.0, this will cause a fatal error as it is not
# a known option.
if user_solver_options.get('timelimit',0) is None:
del user_solver_options['timelimit']
opt = SolverFactory('_neos')
opt._presolve(*args, **kwds)
#
# Map NEOS name, using lowercase convention in Pyomo
#
if len(self._solvers) == 0:
for name in self.kestrel.solvers():
if name.endswith('AMPL'):
self._solvers[ name[:-5].lower() ] = name[:-5]
if solver_name not in self._solvers:
raise ActionManagerError(
"Solver '%s' is not recognized by NEOS. "
"Solver names recognized:\n%s"
% (solver_name, str(sorted(self._solvers.keys()))))
#
# Apply kestrel
#
# Set the kestrel_options environment
#
neos_sname = self._solvers[solver_name].lower()
os.environ['kestrel_options'] = 'solver=%s' % self._solvers[solver_name]
#
# Set the <solver>_options environment
#
solver_options = {}
for key in opt.options:
solver_options[key]=opt.options[key]
solver_options.update(user_solver_options)
options = opt._get_options_string(solver_options)
if not options == "":
os.environ[neos_sname+'_options'] = options
#
# Generate an XML string using these two environment variables
#
xml = self.kestrel.formXML(opt._problem_files[0])
(jobNumber, password) = self.kestrel.submit(xml)
ah.job = jobNumber
ah.password = password
#
# Cleanup
#
del os.environ['kestrel_options']
try:
del os.environ[neos_sname+"_options"]
except:
pass
#
# Store action handle, and return
#
self._ah[jobNumber] = ah
self._neos_log[jobNumber] = (0, "")
self._opt_data[jobNumber] = (opt,
opt._smap_id,
opt._load_solutions,
opt._select_index,
opt._default_variable_value)
self._args[jobNumber] = args
return ah
