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at: add arg to set memory limit #3431

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Merged
vvbandeira merged 5 commits into from
Sep 11, 2025
Merged

at: add arg to set memory limit #3431

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34d8dd9
at: add arg to set memory limit
vvbandeira Aug 25, 2025
52b1f22
at: memory limit disabled by default
vvbandeira Aug 25, 2025
5a2c730
at: use correct ulimit flag for virtual memory
vvbandeira Aug 25, 2025
68564ef
at: cast to int memory limit, ulimit does not parse floats
vvbandeira Aug 26, 2025
d0e0f6d
at: move memory_limit arg to be for both modes
vvbandeira Sep 11, 2025
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7 changes: 7 additions & 0 deletions tools/AutoTuner/src/autotuner/distributed.py
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Original file line number Diff line number Diff line change
Expand Up @@ -396,6 +396,13 @@ def parse_arguments():
default=16,
help="Max number of threads openroad can use.",
)
parser.add_argument(
"--memory_limit",
type=float,
metavar="<float>",
default=None,
help="Maximum memory in GB that each trial job can use, process will be killed and not retried if it exceeds.",
)
parser.add_argument(
"--server",
type=str,
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3 changes: 3 additions & 0 deletions tools/AutoTuner/src/autotuner/utils.py
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Expand Up @@ -324,6 +324,9 @@ def openroad(
export_command += " && "

make_command = export_command
if args.memory_limit is not None:
limit = int(args.memory_limit * 1_000_000)
make_command += f"ulimit -v {limit}; "
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}"
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