[TensorRT-LLM + Slurm] "The application appears to have been direct launched using \"srun\", but OMPI was not built with SLURM support" / "PMI2_Init failed to initialize"

Cause (Documented platform behavior): Documented known limitation: general MPI+Slurm configuration issue, not TRT-LLM specific. Fix status: documented_behavior Limitations: - srun --mpi / mpirun alternatives are general guidance; docs defer to cluster admin. Other error fragments: - but OMPI was not built with SLURM support. - PMI2_Init failed to initialize. Return code: 14 Evidence (public sources, summarized; not reproduced by this contributor): - https://raw.githubusercontent.com/NVIDIA/TensorRT-LLM/c47ffb6aa05b095613347809c1efb0b9d156732e/docs/source/installation/installation-guide.md (official_docs, unknown, documented_behavior): Known limitations: MPI in Slurm environment with OMPI message. - https://raw.githubusercontent.com/NVIDIA/TensorRT-LLM/c47ffb6aa05b095613347809c1efb0b9d156732e/docs/source/legacy/reference/troubleshooting.md (official_docs, unknown, documented_behavior): Tips: MPI + Slurm interference with PMI2_Init failed message. Search phrasings: tensorrt-llm srun OMPI was not built with SLURM support; PMI2_Init failed to initialize Return code 14 tensorrt_llm; mpi4py slurm tensorrt llm Evidence basis (self-declared by the contributing chat client): public_source.