Fix issue with threads option in run_designs.py (The-OpenROAD-Proje…

…ct#994)

Resolves The-OpenROAD-Project#988

[skip ci]

run_designs.py

@@ -32,7 +32,9 @@
 @click.option("-c", "--config_tag", default="config", help="Configuration file")
 @click.option("-r", "--regression", default=None, help="Regression file")
 @click.option("-t", "--tag", default="regression", help="Tag for the log file")
-@click.option("-j", "--threads", default=1, help="Number of designs in parallel")
+@click.option(
+ "-j", "--threads", default=1, type=int, help="Number of designs in parallel"
+)
 @click.option(
  "-p",
  "--configuration_parameters",
@@ -115,7 +117,7 @@ def cli(
  if print_rem_time is not None:
  rem_designs = dict.fromkeys(designs, 1)
 
- num_workers = int(threads)
+ num_workers = threads
  config = config_tag
 
  if regression is not None: