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Set -N=1/--nodes=1 for SLURM workers #680

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Merged
merged 1 commit into from
May 16, 2025
Merged

Set -N=1/--nodes=1 for SLURM workers #680

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3 changes: 2 additions & 1 deletion dask_jobqueue/slurm.py
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Original file line number Diff line number Diff line change
Expand Up @@ -81,9 +81,10 @@ def __init__(
if account is not None:
header_lines.append("#SBATCH -A %s" % account)

# Init resources, always 1 task,
# Init resources, always 1 task, 1 node,
# and then number of cpu is processes * threads if not set
header_lines.append("#SBATCH -n 1")
header_lines.append("#SBATCH -N 1")
header_lines.append(
"#SBATCH --cpus-per-task=%d" % (job_cpu or self.worker_cores)
)
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4 changes: 4 additions & 0 deletions dask_jobqueue/tests/test_slurm.py
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Original file line number Diff line number Diff line change
Expand Up @@ -35,6 +35,7 @@ def test_header():
assert "#SBATCH" in cluster.job_header
assert "#SBATCH -J dask-worker" in cluster.job_header
assert "#SBATCH -n 1" in cluster.job_header
assert "#SBATCH -N 1" in cluster.job_header
assert "#SBATCH --cpus-per-task=8" in cluster.job_header
assert "#SBATCH --mem=27G" in cluster.job_header
assert "#SBATCH -t 00:02:00" in cluster.job_header
Expand All @@ -61,6 +62,7 @@ def test_header():
assert "#SBATCH" in cluster.job_header
assert "#SBATCH -J " in cluster.job_header
assert "#SBATCH -n 1" in cluster.job_header
assert "#SBATCH -N 1" in cluster.job_header
assert "#SBATCH -t " in cluster.job_header
assert "#SBATCH -p" not in cluster.job_header
# assert "#SBATCH -A" not in cluster.job_header
Expand All @@ -76,6 +78,7 @@ def test_job_script():
formatted_bytes = format_bytes(parse_bytes("7GB")).replace(" ", "")
assert f"--memory-limit {formatted_bytes}" in job_script
assert "#SBATCH -n 1" in job_script
assert "#SBATCH -N 1" in cluster.job_header
assert "#SBATCH --cpus-per-task=8" in job_script
assert "#SBATCH --mem=27G" in job_script
assert "#SBATCH -t 00:02:00" in job_script
Expand Down Expand Up @@ -108,6 +111,7 @@ def test_job_script():
assert "#SBATCH" in job_script
assert "#SBATCH -J dask-worker" in job_script
assert "#SBATCH -n 1" in job_script
assert "#SBATCH -N 1" in cluster.job_header
assert "#SBATCH --cpus-per-task=8" in job_script
assert "#SBATCH --mem=27G" in job_script
assert "#SBATCH -t 00:02:00" in job_script
Expand Down
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