def solve_high_level(gams_folder,sim_folder,output_lst=False):
"""Use higher level apis to run GAMSy"""
# create GAMS workspace:
try:
from gams import GamsWorkspace
ws = GamsWorkspace(system_directory=str(gams_folder), debug=3)
shutil.copy(os.path.join(sim_folder, 'UCM_h.gms'), ws.working_directory)
shutil.copy(os.path.join(sim_folder, 'Inputs.gdx'), ws.working_directory)
shutil.copy(os.path.join(sim_folder, 'cplex.opt'), ws.working_directory)
t1 = ws.add_job_from_file('UCM_h.gms')
opt = ws.add_options()
# Do not create .lst file
if not output_lst:
if sys.platform == 'win32':
opt.output = 'nul'
else:
opt.output = '/dev/null'
time0 = time.time()
status = t1.run(opt)
except Exception as e:
if 'optCreateD' in str(e):
logging.error('The GAMS solver can only be run once in the same console. Please open another console')
sys.exit(1)
else:
logging.error('The following error occured when trying to solve the model in gams: ' + str(e))
sys.exit(1)
# copy the result file to the simulation environment folder:
shutil.copy(os.path.join(ws.working_directory, 'Results.gdx'), sim_folder)
for filename in ['UCM_h.lst','UCM_h.log','debug.gdx']:
if os.path.isfile(os.path.join(ws.working_directory, filename)):
shutil.copy(os.path.join(ws.working_directory, filename), sim_folder)
logging.info('Completed simulation in {0:.2f} seconds'.format(time.time() - time0))
return status
def solve_GAMS(sim_folder, gams_folder=None, work_dir=None, output_lst=False):
if not package_exists('gams'):
logging.warning(
'Could not import gams. Trying to automatically locate gdxcc folder'
)
if not import_local_lib('gams'):
return False
if not os.path.exists(gams_folder):
logging.warn('The provided path for GAMS (' + gams_folder +
') does not exist. Trying to locate...')
gams_folder = get_gams_path()
if not os.path.exists(gams_folder):
logging.error('GAMS path cannot be located. Simulation is stopped')
return False
sim_folder = sim_folder.encode()
gams_folder = gams_folder.encode()
if is_sim_folder_ok(sim_folder):
# create GAMS workspace:
from gams import GamsWorkspace
try:
ws = GamsWorkspace(system_directory=gams_folder,
working_directory=work_dir,
debug=3)
shutil.copy(os.path.join(sim_folder, 'UCM_h.gms'),
ws.working_directory)
shutil.copy(os.path.join(sim_folder, 'Inputs.gdx'),
ws.working_directory)
t1 = ws.add_job_from_file('UCM_h.gms')
opt = ws.add_options()
#Do not create .lst file
if not output_lst:
if sys.platform == 'win32':
opt.output = 'nul'
else:
opt.output = '/dev/null'
time0 = time.time()
t1.run(opt)
except Exception as e:
if 'optCreateD' in str(e):
logging.error(
'The GAMS solver can only be run once in the same console. Please open another console'
)
sys.exit(1)
else:
logging.error(
'The following error occured when trying to solve the model in gams: '
+ str(e))
sys.exit(1)
logging.info(
'Completed simulation in {0:.2f} seconds'.format(time.time() -
time0))
# copy the result file to the simulation environment folder:
shutil.copy(os.path.join(ws.working_directory, 'Results.gdx'),
sim_folder)
for filename in ['UCM_h.lst', 'UCM_h.log', 'debug.gdx']:
if os.path.isfile(os.path.join(ws.working_directory, 'debug.gdx')):
shutil.copy(os.path.join(ws.working_directory, 'debug.gdx'),
sim_folder)
if os.path.isfile(os.path.join(ws.working_directory, 'debug.gdx')):
logging.warn(
'A debug file was created. There has probably been an optimization error'
)
if os.path.isfile('warn.log'):
shutil.copy('warn.log', os.path.join(sim_folder, 'warn_solve.log'))
else:
return False