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Don't converge only after a successful measurement.

This commit is contained in:
Matt Guthaus 2016-11-11 14:25:46 -08:00
parent 5e33781268
commit 7d0d590879
1 changed files with 6 additions and 7 deletions
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13
compiler/characterizer/delay.py
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@ -345,20 +345,19 @@ class delay():
target_period = 0.5 * (ub_period + lb_period) target_period = 0.5 * (ub_period + lb_period)
debug.info(1, "MinPeriod Search: {0}ns (ub: {1} lb: {2})".format(target_period, debug.info(1, "MinPeriod Search: {0}ns (ub: {1} lb: {2})".format(target_period,
ub_period, ub_period,
lb_period)) lb_period))
(success, delay_out) = self.try_period(feasible_period, target_period, data_value) (success, delay_out) = self.try_period(feasible_period, target_period, data_value)
if success: if success:
if ch.relative_compare(ub_period, target_period):
# use the two values to compare, but only return the ub since it is guaranteed feasible
(success, delay_out) = self.try_period(feasible_period, ub_period, data_value)
return (ub_period, delay_out)
fail_flag = False
ub_period = target_period ub_period = target_period
else: else:
lb_period = target_period lb_period = target_period
if ch.relative_compare(ub_period, lb_period):
# use the two values to compare, but only return the ub since it is guaranteed feasible
(success, delay_out) = self.try_period(feasible_period, ub_period, data_value)
return (ub_period, delay_out)
self.error("Should not reach here.",-1) self.error("Should not reach here.",-1)
return (target_period, delay_out) return (target_period, delay_out)