altf4arnold/datatracker
1
0
Fork 0
Code Issues Pull requests Actions 2 Packages Projects Releases Wiki Activity

Increased the generate_schedule optimiser run count to 160, and tweaked some output messages.

Browse source 
- Legacy-Id: 18133
This commit is contained in:
Henrik Levkowetz 2020-07-03 11:52:05 +00:00
parent 35a7dc9827
commit ef9c6e7ee0
1 changed files with 14 additions and 4 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

18
ietf/meeting/management/commands/generate_schedule.py
View file

@ -23,7 +23,13 @@ import debug # pyflakes:ignore
from ietf.person.models import Person
from ietf.meeting import models
OPTIMISER_MAX_CYCLES = 80
# 40 runs of the optimiser for IETF 106 with cycles=160 resulted in 16
# zero-violation invocations, with a mean number of runs of 91 and
# std-dev 41. On the machine used, 160 cycles had a runtime of about
# 30 minutes. Setting default to 160, as 80 or 100 seems too low to have
# a reasonable rate of success in generating zero-cost schedules.
OPTIMISER_MAX_CYCLES = 160
class Command(BaseCommand):
@ -62,6 +68,7 @@ class ScheduleHandler(object):
def run(self):
"""Schedule all sessions"""
beg_time = time.time()
self.schedule.fill_initial_schedule()
violations, cost = self.schedule.total_schedule_cost()
@ -309,8 +316,8 @@ class Schedule(object):
random.shuffle(items)
if self.verbosity >= 2:
self.stdout.write('== Optimiser starting run {}, dynamic cost after last run {} =='
.format(run_count, intcomma(last_run_cost)))
self.stdout.write('== Optimiser starting run {}, dynamic cost after last run {:,} =='
.format(run_count, last_run_cost))
self.stdout.write('Dynamic violations in last optimiser run: {}'
.format(last_run_violations))
if shuffle_next_run:
@ -321,8 +328,11 @@ class Schedule(object):
for original_timeslot, session in items:
best_cost = self.calculate_dynamic_cost()[1]
if best_cost == 0:
if self.verbosity >= 1 and self.stdout.isatty():
sys.stderr.write('\n')
if self.verbosity >= 2:
self.stdout.write('Optimiser found an optimal schedule')
return run_count
best_timeslot = None
@ -351,7 +361,7 @@ class Schedule(object):
if self.verbosity >= 1 and self.stdout.isatty():
sys.stderr.write('\n')
if self.verbosity >= 2:
self.stdout.write('Optimiser did not find perfect schedule, using best schedule at dynamic cost {}'
self.stdout.write('Optimiser did not find perfect schedule, using best schedule at dynamic cost {:,}'
.format(self.best_cost))
self.schedule = self.best_schedule