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Functions | |
| def | scen_solve (checkpoint, bmult_list, list_lock, io_lock) |
Variables | |
| str | GAMS_MODEL |
| sys | sys_dir = sys.argv[1] if len(sys.argv) > 1 else None |
| GamsWorkspace | ws = GamsWorkspace(system_directory=sys_dir) |
| GamsWorkspace | cp = ws.add_checkpoint() |
| GamsWorkspace | job = ws.add_job_from_string(GAMS_MODEL) |
| checkpoint | |
| list | bmult_list = [1.3, 1.2, 1.1, 1.0, 0.9, 0.8, 0.7, 0.6] |
| Lock | list_lock = Lock() |
| Lock | io_lock = Lock() |
| int | nr_workers = 2 |
| dict | threads = {} |
| target | |
| scen_solve | |
| args | |
Function Documentation
◆ scen_solve()
| def transport8.scen_solve | ( | checkpoint, | |
| bmult_list, | |||
| list_lock, | |||
| io_lock | |||
| ) |
Definition at line 62 of file transport8.py.
62def scen_solve(checkpoint, bmult_list, list_lock, io_lock):
63 list_lock.acquire()
64 mi = checkpoint.add_modelinstance()
65 list_lock.release()
66 bmult = mi.sync_db.add_parameter("bmult", 0, "demand multiplier")
67 opt = ws.add_options()
68 opt.all_model_types = "cplex"
69
70 # instantiate the GamsModelInstance and pass a model definition and GamsModifier to declare bmult mutable
71 mi.instantiate("transport use lp min z", GamsModifier(bmult), opt)
72 bmult.add_record().value = 1.0
73
74 while True:
75 # dynamically get a bmult value from the queue instead of passing it to the different threads at creation time
76 list_lock.acquire()
77 if not bmult_list:
78 list_lock.release()
79 return
80 b = bmult_list.pop()
81 list_lock.release()
82 bmult.first_record().value = b
83 mi.solve()
84
85 # we need to make the ouput a critical section to avoid messed up report informations
86 io_lock.acquire()
87 print(f"Scenario bmult={b}:")
88 print(f" Modelstatus: {mi.model_status}")
89 print(f" Solvestatus: {mi.solver_status}")
90 print(f" Obj: {mi.sync_db['z'].first_record().level}")
91 io_lock.release()
92
93
Variable Documentation
◆ args
| transport8.args |
Definition at line 115 of file transport8.py.
◆ bmult_list
| list transport8.bmult_list = [1.3, 1.2, 1.1, 1.0, 0.9, 0.8, 0.7, 0.6] |
Definition at line 104 of file transport8.py.
◆ checkpoint
| transport8.checkpoint |
Definition at line 102 of file transport8.py.
◆ cp
| GamsWorkspace transport8.cp = ws.add_checkpoint() |
Definition at line 98 of file transport8.py.
◆ GAMS_MODEL
| str transport8.GAMS_MODEL |
Definition at line 14 of file transport8.py.
◆ io_lock
| Lock transport8.io_lock = Lock() |
Definition at line 108 of file transport8.py.
◆ job
| GamsWorkspace transport8.job = ws.add_job_from_string(GAMS_MODEL) |
Definition at line 101 of file transport8.py.
◆ list_lock
| Lock transport8.list_lock = Lock() |
Definition at line 107 of file transport8.py.
◆ nr_workers
| int transport8.nr_workers = 2 |
Definition at line 111 of file transport8.py.
◆ scen_solve
| transport8.scen_solve |
Definition at line 115 of file transport8.py.
◆ sys_dir
| sys transport8.sys_dir = sys.argv[1] if len(sys.argv) > 1 else None |
Definition at line 95 of file transport8.py.
◆ target
| transport8.target |
Definition at line 115 of file transport8.py.
◆ threads
| dict transport8.threads = {} |
Definition at line 112 of file transport8.py.
◆ ws
| GamsWorkspace transport8.ws = GamsWorkspace(system_directory=sys_dir) |
Definition at line 96 of file transport8.py.