llama.cpp Adds Blackwell Tensor Parallelism Support

·2026.05.10 22:12

Key point

The llama.cpp b9095 update enables tensor parallel processing on Blackwell PCIe GPUs without NCCL.

The latest build of llama.cpp, b9095, adds a feature for Dual Blackwell PCIe GPU environments.

Through this update, Tensor Parallelism(-sm) can now be used without NCCL(NVIDIA Collective Communications Library).

This is an important technical advance for users looking to run LLMs in multi-GPU environments using consumer Blackwell GPUs.

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