The legacy NVIDIA device reservation requests utility without compute.
Docker derives driver capabilities from that list, leaving CUDA libraries
unavailable even when monitoring works.
Include compute in the legacy example and clarify the matching docs.
Assisted-by: Codex:GPT-6
Workers on NVIDIA unified-memory hardware (DGX Spark / GB10, Jetson AGX Thor,
Jetson Orin/Xavier/Nano) were reporting `available_vram=0` back to the frontend,
so the Nodes UI showed the node as fully used even when most of the unified
memory was actually free.
Three causes addressed:
* `isTegraDevice` only matched `/sys/devices/soc0/family == "Tegra"`. DGX Spark
(SBSA) reports JEDEC codes there instead — `jep106:0426` for the NVIDIA
manufacturer — so the Tegra/unified-memory fallback never ran. Renamed to
`isNVIDIAIntegratedGPU` and extended to also match `jep106:0426[:*]` via
`/sys/devices/soc0/soc_id`.
* The unified-iGPU code defaulted the device name to `"NVIDIA Jetson"` when
`/proc/device-tree/model` was missing. That's what happens for Thor inside a
docker container, and always on DGX Spark. New `nvidiaIntegratedGPUName`
resolves via dt-model → `/sys/devices/soc0/machine` → `soc_id` lookup
(`jep106:0426:8901` → `"NVIDIA GB10"`) so the Nodes UI labels the box
correctly.
* Worker heartbeat sent `available_vram=0` (or total-as-available) when VRAM
usage was momentarily unknown — e.g. when `nvidia-smi` intermittently failed
with `waitid: no child processes` under containers without `--init`. Each
such heartbeat overwrote the DB and made the UI flip to "fully used".
`heartbeatBody` now omits `available_vram` in that case so the DB keeps its
last good value.
Also updates the commented GPU blocks in both compose files with
`NVIDIA_DRIVER_CAPABILITIES=compute,utility`, `capabilities: [gpu, utility]`,
and `init: true`, and documents the requirement in the distributed-mode and
nvidia-l4t pages. Without `utility`, NVML/`nvidia-smi` are absent inside the
container, which is what put the DGX Spark worker into the buggy fallback in
the first place.
Detection verified on live hardware (dgx.casa / GB10 and 192.168.68.23 / Thor)
by running a cross-compiled probe of the new helpers on both host and inside
the worker container.
Assisted-by: Claude:opus-4.7 [Claude Code]
localai-org-maint-bot