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fix knob_range_search lowerbound

This commit is contained in:
yangdsh 2020-04-24 04:20:50 +00:00 committed by Dana Van Aken
parent 5df71fb436
commit 37e0d58ce0
1 changed files with 2 additions and 11 deletions
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13
server/website/website/tasks/async_tasks.py
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@ -131,9 +131,7 @@ def _task_result_tostring(task_result):
def choose_value_in_range(num1, num2):
if num2 < 10 and num1 < 10:
mean = min(num1, num2)
elif num1 > 10 * num2 or num2 > 10 * num1:
if num1 > 10 * num2 or num2 > 10 * num1:
# It is important to add 1 to avoid log(0)
log_num1 = np.log(num1 + 1)
log_num2 = np.log(num2 + 1)
@ -180,13 +178,6 @@ def calc_next_knob_range(algorithm, knob_info, newest_result, good_val, bad_val,
else:
if mode == 'lowerbound':
session_knob.minval = str(int(expected_value))
# Terminate the search if the observed value is very different from the set one
if expected_value < last_value / 10:
session_knob.minval = str(int(last_value))
session_knob.lowerbound = str(int(last_value))
session_knob.save()
# The return value means we will not generate next config to test this knob
return False, None
else:
session_knob.maxval = str(int(expected_value))
next_value = choose_value_in_range(expected_value, bad_val)
@ -225,7 +216,7 @@ def preprocessing(result_id, algorithm):
if knob_info.get('lowerbound', None) is not None:
lowerbound = float(knob_info['lowerbound'])
minval = float(knob_info['minval'])
if lowerbound < minval * 0.7:
if lowerbound < minval * 0.7 and minval > 10:
# We need to do binary search to determine the minval of this knob
successful, target_data = calc_next_knob_range(
algorithm, knob_info, newest_result, minval, lowerbound, 'lowerbound')