Temporarily drop down number of trials for level1 and level2

In Qiskit#3999 we increased the number of trials, but the global benefit from doing this isn't clear. With the pending release weighing the increased run time for more trials against this, this commit temporarily reverts the number of trials for level 1 and level 2 back to their previous setting of 20. When we get to the bottom of Qiskit#4094 and have a fix or change for that we can increase the number of trials again. Related Qiskit#4094
mtreinish · Apr 7, 2020 · 0b3b89e · 0b3b89e
1 parent 9d7c711
commit 0b3b89e
Show file tree

Hide file tree

Showing 2 changed files with 2 additions and 2 deletions.
diff --git a/qiskit/transpiler/preset_passmanagers/level1.py b/qiskit/transpiler/preset_passmanagers/level1.py
@@ -119,7 +119,7 @@ def _swap_condition(property_set):
     if routing_method == 'basic':
         _swap += [BasicSwap(coupling_map)]
     elif routing_method == 'stochastic':
-        _swap += [StochasticSwap(coupling_map, trials=50, seed=seed_transpiler)]
+        _swap += [StochasticSwap(coupling_map, trials=20, seed=seed_transpiler)]
     elif routing_method == 'lookahead':
         _swap += [LookaheadSwap(coupling_map, search_depth=4, search_width=4)]
     else:

diff --git a/qiskit/transpiler/preset_passmanagers/level2.py b/qiskit/transpiler/preset_passmanagers/level2.py
@@ -114,7 +114,7 @@ def _swap_condition(property_set):
     if routing_method == 'basic':
         _swap += [BasicSwap(coupling_map)]
     elif routing_method == 'stochastic':
-        _swap += [StochasticSwap(coupling_map, trials=100, seed=seed_transpiler)]
+        _swap += [StochasticSwap(coupling_map, trials=20, seed=seed_transpiler)]
     elif routing_method == 'lookahead':
         _swap += [LookaheadSwap(coupling_map, search_depth=5, search_width=5)]
     else: