vh
d0f68a3b18
scripts/blender-run launches each call as a docker run --rm of the Blender image on fv-ml1 GPU 3, capped at 64g / 48 CPUs. It needs no desktop and does not affect the GUI container's lifecycle. --job DIR stages a local directory to /tank/blender/jobs/<name>/, runs Blender with that as the cwd, and copies results back. It always passes --python-exit-code 1, because Blender otherwise exits 0 when a --python script raises (measured). Tested headless: Cycles GPU and CPU, EEVEE via EGL, Workbench, an STL round-trip, and exit codes (3, 7 and 1 pass through). There is no STEP importer. Written for draupnir's design work, and indexed in FLEETTOOLS with a detail file.
67 lines
3.1 KiB
Bash
Executable File
67 lines
3.1 KiB
Bash
Executable File
#!/usr/bin/env bash
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# blender-run — one-shot HEADLESS Blender on fv-ml1 GPU 3, for scripted/CLI callers (draupnir etc.).
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# The agent-driven, interactive path is scripts/blender-mcp; this is the batch path.
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#
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# scripts/blender-run [--job DIR] -- <blender args after -b>
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# scripts/blender-run --job /mnt/smithy/draupnir/j42 -- --python render.py -- --out out.png
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# scripts/blender-run -- --python-expr 'import bpy; print(bpy.app.version_string)'
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#
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# Each call is its own `docker run --rm` of the stacks/blender image (Blender 5.2.2 LTS, Python
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# 3.13): no desktop, no MCP socket, gone when Blender exits. So it never collides with the on-demand
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# GUI container, and GPU 3 goes back to 0 when the render ends. Always added: `-b --factory-startup
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# --python-exit-code 1`. Without that last flag, Blender exits 0 even when a --python script raises
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# (measured).
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#
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# ⚠ Give render.filepath an ABSOLUTE path (os.path.abspath). Blender does not resolve a relative
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# output path against the working directory: "cannot save 'out.png'". Python file I/O and
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# importers do use the cwd.
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#
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# Files: fv-ml1 does NOT mount /mnt/smithy. With --job DIR, DIR is copied to
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# fv-ml1:/tank/blender/jobs/<name>/, Blender runs WITH THAT AS ITS WORKING DIRECTORY, and new or
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# changed files are copied back into DIR afterwards (nothing is deleted on either side). Use
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# relative paths inside the job. Without --job, the only paths Blender sees are under
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# /work (= fv-ml1:/tank/blender).
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#
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# Budget: GPU 3 (96 GB, borrowed from the vLLM reserve: this ends if a full-size seat moves in).
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# The container is capped at 64 GB RAM / 48 CPUs so a runaway render cannot starve the inference
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# seats on the same host.
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set -euo pipefail
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HOST=${BLENDER_SSH_HOST:-infra-ops@10.251.50.54}
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ENV_FILE=/opt/docker/compose/blender/.env
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JOB=""
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while [ $# -gt 0 ]; do
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case "$1" in
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--job) JOB=${2:?--job needs a directory}; shift 2 ;;
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--) shift; break ;;
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-h|--help) sed -n 2,23p "$0"; exit 0 ;;
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*) echo "blender-run: unknown option $1 (blender args go after --)" >&2; exit 2 ;;
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esac
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done
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WORKDIR=/work
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if [ -n "$JOB" ]; then
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[ -d "$JOB" ] || { echo "blender-run: --job $JOB is not a directory" >&2; exit 2; }
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NAME=$(basename "$(realpath "$JOB")")
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[[ $NAME =~ ^[A-Za-z0-9._-]+$ ]] || { echo "blender-run: job dir name '$NAME' must be [A-Za-z0-9._-]" >&2; exit 2; }
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ssh -n -o BatchMode=yes "$HOST" "mkdir -p /tank/blender/jobs/$NAME"
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rsync -a "$JOB"/ "$HOST:/tank/blender/jobs/$NAME/"
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WORKDIR=/work/jobs/$NAME
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fi
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# Arguments travel as one shell-quoted string: ssh flattens argv into a remote command line.
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ARGS=$(printf '%q ' "$@")
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set +e
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ssh -n -o BatchMode=yes "$HOST" "IMG=\$(grep '^IMAGE=' $ENV_FILE | cut -d= -f2) && \
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exec docker run --rm --name blender-run-\$\$ --runtime nvidia \
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-e NVIDIA_VISIBLE_DEVICES=3 -e NVIDIA_DRIVER_CAPABILITIES=all \
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--user 1002:1003 -e HOME=/tmp --memory 64g --cpus 48 \
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-v /tank/blender:/work -w $WORKDIR --entrypoint /blender/blender \"\$IMG\" \
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-b --factory-startup --python-exit-code 1 $ARGS"
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RC=$?
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set -e
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if [ -n "$JOB" ]; then
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rsync -a --update "$HOST:/tank/blender/jobs/$NAME/" "$JOB"/
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fi
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exit $RC
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