Achieving Peak System and Workload Efficiency on NVIDIA GB200 NVL72 with Slurm Block Scheduling
Quick Answer
The NVIDIA GB200 NVL72 revolutionizes GPU cluster architecture by extending NVLink coherence across entire racks, enabling exascale performance while imposing strict 'rack-scale locality' constraints that affect workload scheduling.
Quick Take
This shift necessitates re-evaluation of existing scheduling systems to maintain performance across domain boundaries.
Key Points
- NVIDIA GB200 NVL72 enhances GPU cluster efficiency with rack-scale NVLink coherence.
- Exascale performance is achievable, but scheduling systems must adapt to new constraints.
- Rack-scale locality is now a critical factor for workload performance.
- Cross-domain workload execution results in significant performance degradation.
- Existing scheduling assumptions need re-evaluation to optimize performance.
Article Excerpt
From source RSS / original summaryNVIDIA GB200 NVL72 introduces a fundamentally new way to build GPU clusters by extending NVIDIA NVLink coherence across an entire rack. This design enables... NVIDIA GB200 NVL72 introduces a fundamentally new way to build GPU clusters by extending NVIDIA NVLink coherence across an entire rack. This design enables exascale performance, but it also changes the assumptions that many scheduling systems were built on. As a result, “rack-scale locality” becomes a hard constraint.
When workloads cross domain boundaries, performance drops sharply… Source
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