Switchless RoCE collectives, NCCL profiles and fabric tooling for DGX Spark inference recipes
Practical AI homelab setup guides for GB10, Mac Studio Ultra, RoCE/RDMA, MikroTik switching, NCCL, and heterogeneous workload experiments.
NCCL over a switchless 4-node DGX Spark / GB10 ring using both PCIe halves of every QSFP cable: ~193 Gb/s per cable instead of ~112, up to +34% vLLM prefill. One patch on top of switchless-nccl.
Clustering NVIDIA GB10 workstations (DGX Spark and OEM boxes): two nodes, a three-node ring, and a switched 200G RoCE fabric for four or more. By Petronella Technology Group, Inc.
Deploy and manage OpenShift clusters on NVIDIA Air with Red Hat Assisted Installer.
practical guide to multi-node NCCL over switched RoCE fabric on NVIDIA GB10 (DGX Spark class) — documenting the gaps in NVIDIA's official playbooks
v3.0 source-only native Zig TensorFold AFD: RTX 5090 attention, KV state and built-in MTP drafting; two DGX Sparks compute expert halves over native RoCE v2. Four users, 262K context; measured trade-offs and retained v2.x credits. Apache-2.0, as-is, no support.
Field notes, benchmarks, and turnkey scripts for running 284B LLM inference and multi-modal workflows across 2x NVIDIA DGX Spark (GB10) with 200GbE RoCE. 双机 NVIDIA DGX Spark (GB10) 284B 大模型分布式推理与多模态部署实战笔记、真机实测数据与避坑指南。
Field notes and a restart guard for vLLM serving on NVIDIA DGX Spark (GB10).
Read-only health check for the ConnectX-7 cluster fabric on NVIDIA DGX Spark and GB10 workstations: link, cable, MTU, addressing, RoCE/NCCL, peers.
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