at: memory limit disabled by default

Signed-off-by: Vitor Bandeira <[email protected]>

Author: vvbandeira

tools/AutoTuner/src/autotuner/distributed.py

@@ -384,7 +384,7 @@ def parse_arguments():
         "--memory_limit",
         type=float,
         metavar="<float>",
-        default=1,
+        default=None,
         help="Maximum memory in GB that each trial job can use, process will be killed and not retried if it exceeds.",
     )
 

tools/AutoTuner/src/autotuner/utils.py

@@ -324,7 +324,9 @@ def openroad(
     export_command += " && "
 
     make_command = export_command
-    make_command += f"ulimit -v {args.memory_limit * 1_000_000}; make -C {base_dir}/flow DESIGN_CONFIG=designs/"
+    if args.memory_limit is not None:
+        make_command += f"ulimit -m {args.memory_limit * 1_000_000}; "
+    make_command += f"make -C {base_dir}/flow DESIGN_CONFIG=designs/"
     make_command += f"{args.platform}/{args.design}/config.mk"
     make_command += f" PLATFORM={args.platform}"
     make_command += f" FLOW_VARIANT={flow_variant} {parameters}"