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fix: little Ascend NPU implementation bug fix #5246

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fix: little Ascend NPU implementation bug fix #5246

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cccfb95
Refactor NPU version retrieval logic
SolarWindRider Feb 9, 2026
6ec40e5
Fix formatting in ascend_quick_start.rst
SolarWindRider Feb 9, 2026
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1 change: 1 addition & 0 deletions docs/ascend_tutorial/ascend_quick_start.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -196,6 +196,7 @@ verl 中昇腾暂不支持生态库如下：
data.filter_overlong_prompts=True \
data.truncation='error' \
actor_rollout_ref.model.path=Qwen/Qwen2.5-0.5B-Instruct \
+actor_rollout_ref.model.override_config.attn_implementation=sdpa \
actor_rollout_ref.actor.optim.lr=5e-7 \
actor_rollout_ref.model.use_remove_padding=False \
actor_rollout_ref.actor.entropy_coeff=0.001 \
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5 changes: 2 additions & 3 deletions verl/utils/device.py
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Expand Up @@ -183,7 +183,6 @@ def get_device_capability(device_id: int = 0) -> tuple[int | None, int | None]:

return major, minor


def get_npu_versions() -> tuple[str, str]:
"""Get the software version and CANN toolkit version for NPU devices.

Expand All @@ -194,12 +193,12 @@ def get_npu_versions() -> tuple[str, str]:
RuntimeError: If unable to retrieve version information
"""
# Check npu-smi software version
result = subprocess.run(["npu-smi", "info", "-t", "board", "-i", "1"], capture_output=True, text=True, check=True)
result = subprocess.run(["npu-smi", "info"], capture_output=True, text=True, check=True)

# Parse software version from output
software_version = None
for line in result.stdout.split("\n"):
if "Software Version" in line:
if "Version" in line:
# Extract version from line like: "Software Version : 25.3.rc1.2"
parts = line.split(":")
if len(parts) > 1:
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