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[AutoScheduler] Fix task scheduler restoring #6934

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Nov 18, 2020
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[AutoScheduler] Fix task scheduler restoring #6934

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68a42fc
[AutoScheduler] Fix task scheduler restore
comaniac Nov 18, 2020
f19dd10
miner fix
comaniac Nov 18, 2020
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8 changes: 6 additions & 2 deletions python/tvm/auto_scheduler/task_scheduler.py
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Original file line number Diff line number Diff line change
Expand Up @@ -283,8 +283,10 @@ def tune(self, tune_option, search_policy="default"):
)

# do a round robin first to warm up
for i in range(len(self.tasks)):
self._tune_task(i)
for idx in range(len(self.tasks)):
# skip warming up this task if it has been tuned before (restored from the log file)
if not self.task_cts[idx]:
self._tune_task(idx)
self.best_ct = self.ct
self.best_score = self.cur_score

Expand Down Expand Up @@ -473,4 +475,6 @@ def _restore_status(self, log_file, num_measures_per_round):
self.task_cts[i] = int(self.task_cts[i] / num_measures_per_round + 0.5)
self.task_costs_history[i].append(self.best_costs[i])

self.cur_score = self._compute_score(self.best_costs)

logger.info("TaskScheduler: Loaded %d measurement records from %s", total_ct + 1, log_file)
4 changes: 2 additions & 2 deletions tests/python/unittest/test_auto_scheduler_task_scheduler.py
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Expand Up @@ -54,7 +54,7 @@ def test_task_scheduler_round_robin():
for task in tasks:
counters[task.workload_key] = 0

for inp, res in auto_scheduler.load_records(log_file):
for inp, _ in auto_scheduler.load_records(log_file):
counters[inp.task.workload_key] += 1

for task in tasks:
Expand Down Expand Up @@ -121,7 +121,7 @@ def objective_func(costs):
for task in tasks:
counters[task.workload_key] = 0

for inp, res in auto_scheduler.load_records(log_file):
for inp, _ in auto_scheduler.load_records(log_file):
counters[inp.task.workload_key] += 1

assert counters[tasks[0].workload_key] == n_trials - 1
Expand Down