Fewer GPUs, Same SLO.

Most GPU fleets are sized for peak demand, one deployment per GPU, and sit idle for much of the day. We evaluate Nodus Elastic Inference, a pooled serving layer, against the solutions operators use today: one dedicated GPU per tenant, NVIDIA MIG and MPS partitions, cold starts, unmanaged memory overcommit, HAMi-core memory caps, and idle reserved capacity. On NVIDIA H100 GPUs with replayed multi-tenant traffic, Nodus served 32 tenants on 4 GPUs instead of 32 at ≥ 98.5% SLO with zero errors across 3 seeds, an 8× reduction in GPUs and a 7.8–8.1× reduction in cost per million SLO-met tokens. At 2× traffic it planned its own layout on 5 GPUs at 99.98% SLO, 6.4× cheaper than dedicated. Model activation took 0.16–0.39 s instead of 34.5–49.9 s. This report lists only results that were measured on real GPUs and beat the existing solution.

Authors

Publication Details

Journal
Zenodo (CERN European Organization for Nuclear Research)
Published
2026-11-03
DOI
https://doi.org/10.5281/zenodo.23912529
Primary Topic
Cloud Computing and Resource Management
Type
preprint
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preprint

Fewer GPUs, Same SLO.

Pranav Varshney, Viswa Kotra
Zenodo (CERN European Organization for Nuclear Research)
Cloud Computing and Resource Management
preprint

Fewer GPUs, Same SLO.

Pranav Varshney, Viswa Kotra
preprint en

Abstract

Most GPU fleets are sized for peak demand, one deployment per GPU, and sit idle for much of the day. We evaluate Nodus Elastic Inference, a pooled serving layer, against the solutions operators use today: one dedicated GPU per tenant, NVIDIA MIG and MPS partitions, cold starts, unmanaged memory overcommit, HAMi-core memory caps, and idle reserved capacity. On NVIDIA H100 GPUs with replayed multi-tenant traffic, Nodus served 32 tenants on 4 GPUs instead of 32 at ≥ 98.5% SLO with zero errors across 3 seeds, an 8× reduction in GPUs and a 7.8–8.1× reduction in cost per million SLO-met tokens. At 2× traffic it planned its own layout on 5 GPUs at 99.98% SLO, 6.4× cheaper than dedicated. Model activation took 0.16–0.39 s instead of 34.5–49.9 s. This report lists only results that were measured on real GPUs and beat the existing solution.

Zenodo (CERN European Organization for Nuclear Research)
Cloud Computing and Resource Management
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