NVSentinel is NVIDIA's open-source answer to GPU health: DCGM-based checks and automated node remediation for NVIDIA GPUs. It's good, it's free, and inside NVIDIA's lane it's hard to argue with. The catch is the lane. A real fleet isn't only NVIDIA silicon — it's servers, sensors, power, cooling, network, and everything else that produces telemetry. Plexus is the observability frontend for all of it: connect whatever the fleet exports (DCGM metrics included) or the datastore it already lands in, and you get auto-generated dashboards, threshold/event/offline monitors with notification routing, and a full audit trail on every alert.
NVSentinel is a gpu health monitoring & auto-remediation (nvidia, open source). NVSentinel is NVIDIA's open-source GPU health checks and node auto-remediation — single-vendor by design; Plexus is a cross-vendor observability frontend for whole fleets. This page is written by Plexus, so read it with that in mind — we’ve tried to be straight about where NVSentinel is the better choice. Last updated July 2026.
The honest split: NVSentinel does two things Plexus doesn't — GPU-specific health checks and automated node remediation (drain, cordon), both shipping today. Plexus does the things a health checker doesn't: dashboards across every vendor's telemetry, monitors with per-monitor routing, alert history you can audit, and a plain-language terminal — with your data staying in the store you already run if you have one.
● full · ◐ partial · ○ not today
| Capability | Plexus | NVSentinel |
|---|---|---|
Automated node remediation (drain / cordon) today NVSentinel ships automated remediation; Plexus does not act on your systems — it observes, alerts, and keeps the record. | ○ | ● |
NVIDIA-native, free, and open source NVSentinel is free and NVIDIA-backed; Plexus is a commercial platform with open-source SDKs. | ○ | ● |
GPU-specific health checks Plexus can chart and threshold-monitor any GPU metrics you export — DCGM included — but ships no GPU-specific health-check logic of its own. | ◐ | ● |
Cross-vendor, whole-fleet telemetry coverage NVSentinel watches NVIDIA GPUs; Plexus takes whatever telemetry the fleet produces, any vendor, via SDK, HTTP, or a datastore connection. | ● | ○ |
Full observability frontend (dashboards, monitors, alert history) NVSentinel is a health-and-remediation tool, not an observability platform. | ● | ○ |
Connects to your existing datastore with no migration Plexus reads Postgres, TimescaleDB, MySQL, or ClickHouse in place. | ● | ○ |
Per-alert audit trail with verdict capture Every Plexus alert keeps a timeline and a verdict; a remediation tool keeps logs, not an operator-facing history. | ● | ○ |
Plain-language operations via a built-in AI terminal The ⌘K terminal queries the fleet and proposes actions in plain language. | ● | ○ |
Pick NVSentinel Pick NVSentinel if you want free, NVIDIA-native GPU health checks and automated node remediation for an all-NVIDIA fleet, and you're comfortable building the rest of observability around it.
Pick Plexus Pick Plexus if you want one observability frontend across the whole fleet — every vendor's telemetry, auto-generated dashboards, monitors with routing, and auditable alert history — on the datastore you already run. Some teams run both: NVSentinel's health checks and remediation underneath, Plexus as the fleet-wide surface on top.
No — they do different jobs. NVSentinel is single-vendor GPU health checks and automated node remediation. Plexus is a cross-vendor observability frontend: dashboards, monitors, and alert history for whatever telemetry the fleet produces. Teams can run NVSentinel underneath and Plexus as the fleet-wide surface without conflict.
Yes, as ordinary telemetry: export DCGM metrics to a store Plexus connects to, or send them via the SDK or HTTP, and they get dashboards and monitors like any other metric. Plexus doesn't ship GPU-specific health-check logic the way NVSentinel does.
No. Plexus deliberately observes and alerts rather than acting on your systems — remediation stays with tools like NVSentinel and with your operators. What Plexus adds is the record: dashboards, monitors, and a per-alert history the whole team can audit.