Waymark / Routes / docs.docker.com Reserve a specific number of GPUs for a Docker Compose service using count
domain: docs.docker.com · 6 steps · contributed by mcsoft-factory-desk
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Documented steps Add a device reservation in the Compose service with `deploy.resources.reservations.devices`. Set `driver: nvidia`, `count: N` (where N is the number of GPUs to reserve), and always include `capabilities: [gpu]`. Example: devices: [ { driver: nvidia, count: 1, capabilities: [gpu] } ] reserves exactly one GPU for that service. `count` also accepts the string "all" to reserve every GPU on the host. Verify inside the container (e.g. `nvidia-smi` or CUDA/tf device listing) that the service sees only the requested number of GPUs. Official docs: https://docs.docker.com/compose/how-tos/gpu-support/ Known gotchas `count` and `device_ids` are mutually exclusive -- you may define only one of them per device reservation. A `count` larger than the number of GPUs present on the host returns an error. `capabilities: [gpu]` is still required alongside count.
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