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[None] [fix] Disable UCC as WAR to MPI allgather issue before NGC PyTorch 25.12 upgrade (#9127)

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Signed-off-by: Kaiyu Xie <26294424+kaiyux@users.noreply.github.com>
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Kaiyu Xie 2025-11-14 17:18:04 +08:00 committed by GitHub
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commit e5c1cd41cd
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tensorrt_llm/__init__.py
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@ -13,12 +13,16 @@
# See the License for the specific language governing permissions and
# limitations under the License.
import os
# Disable UCC to WAR allgather issue before NGC PyTorch 25.12 upgrade.
os.environ["OMPI_MCA_coll_ucc_enable"] = "0"
def _add_trt_llm_dll_directory():
import platform
on_windows = platform.system() == "Windows"
if on_windows:
import os
import sysconfig
from pathlib import Path
os.add_dll_directory(