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Batch Mode
Batch mode is used to start render farm rendering. Batch mode requires the --batch flag, and at least three arguments; --katana-file, --render-node, and -t flags. These arguments give - respectively - the Katana scene to render, the Render node to render from, and the frame range to render.
Article: How to render an image in multiple tiles in Batch Mode.
For example, to start rendering a Katana scene called yourScene.katana, at Render node renderHere, from frame 1 to frame 1000:
1. | Open a terminal. |
2. | Navigate to the directory where you installed Katana. |
3. | Enter: |
./katana --batch --katana-file=/yourDirectory/yourScene.katana --render-node=renderHere -t 1-1000
The following options apply to Batch mode:
Option |
Usage |
--katana-file |
Specifies the Katana recipe to load. Syntax: --katana-file=<filename> Example: ./katana --batch --katana-file=/tmp/test.katana --t=1 --render-node=beauty |
--asset |
Specifies the asset ID to resolve. Syntax: --asset=<asset ID> Example: ./katana --asset=mock:///show/shot/name/version |
-t or --t |
Specifies the frame range to render. Syntax: -t <frame range> OR --t=<frame range> Where <frame range> can take the form of a range (such as 1-5) or a comma separated list (such as 1,2,3,4,5). These can be combined, for instance: 1-3,5. The previous example would render frames 1, 2, 3, and 5. Example: ./katana --batch --katana-file=/tmp/test.katana --t=1-5,8 --render-node=beauty |
--var |
Sets the value of an existing Graph State Variable. Syntax: --var <GSV name>=<GSV value> Example: ./katana --batch --katana-file=/tmp/test.katana --t=1 --var Shot=Sh1 --render-node=beauty |
--threads2d |
Specifies the number of additional processors within the application. An additional processor is also used for Katana's main thread. This means that Katana uses 3 processors when --threads2d=2. Syntax: --threads2d=<num threads> Example: ./katana --batch --katana-file=/tmp/test.katana --t=1 --threads2d=2 --render-node=beauty |
--threads3d |
Specifies the number of simultaneous threads the renderer uses. Syntax: --threads3d=<num threads> Example: ./katana --batch --katana-file=/tmp/test.katana --t=1 --threads3d=8 --render-node=beauty |
--render-node |
Specifies the Render node from which to render the recipe. Syntax: --render-node=<node name> Example: ./katana --batch --katana-file=/tmp/test.katana --t=1 --render-node=beauty |
--render-internal-dependencies |
Allows any render nodes that don't produce asset outputs to be rendered within a single katana --batch process. Asset outputs are determined by asking the current asset plug-in if the output location is an assetId, using isAssetId(). The default file asset plug-in that ships with Katana classes everything as an asset. So at present it is not possible to render any dependencies within one katana --batch command without customizing the asset plug-in. |
--crop-rect |
Specifies which part of an image to crop. The same cropping area is used for all renders. Syntax: --crop-rect="(<left>,<bottom>,<width>,<height>)" Example: ./katana --batch --katana-file=/tmp/test.katana --t=1 --render-node=beauty --crop-rect="(0,0,256,256)" |
--setDisplayWindowToCropRect |
Sets the display image to the same size as the crop rectangle set by --crop-rect. |
--tile-render |
Used to render one tile of an image divided horizontally and vertically into tiles. For instance, using 0,2 1,2 2,2 0,1 1,1 2,1 0,0 1,0 2,0 The results are saved in the same location as specified by the RenderOutputDefine node but with a tile suffix. For instance: tile_1_1.beauty.001.exr Syntax: --tile-render=<left_tile_index>, <bottom_tile_index>, <total_tiles_width>, <total_tiles_height> Example: ./katana --batch --katana-file=/tmp/test.katana --t=1 --render-node=beauty --tile-render=0,0,2,2 ./katana --batch --katana-file=/tmp/test.katana --t=1 --render-node=beauty --tile-render=0,1,2,2 ./katana --batch --katana-file=/tmp/test.katana --t=1 --render-node=beauty --tile-render=1,0,2,2 ./katana --batch --katana-file=/tmp/test.katana --t=1 --render-node=beauty --tile-render=1,1,2,2 |
--tile-stitch |
Used to assemble tiles rendered with the --tile-render flag into a complete image. When stitching, you must still pass the --tile-render argument, with the number of x and y tiles, so that the stitch knows how many tiles to expect, and their configuration. Syntax: --tile-render=<left_tile_index>, <bottom_tile_index>, <total_tiles_width>, <total_tiles_height> --tile-stitch Example: ./katana --batch --katana-file=/tmp/test.katana --t=1 --render-node=beauty --tile-render=0,0,2,2 --tile-stitch |
--tile-cleanup |
Used to clean up transient tile images. Can be used in conjunction with --tile-stitch to assemble a complete image, and remove transient tiles in a single operation. When using --tile-cleanup you must still pass the --tile-render argument with the number of x and y tiles, so that cleanup knows how many tiles to remove. Syntax: --tile-render=0,0,<total_tiles_width>,<total_tiles_height> --tile-clean Example: ./katana --batch --katana-file=/tmp/test.katana --t=1 --render-node=beauty --tile-render=0,0,2,2 --tile-stitch --tile-clean |
--prerender-publish |
In Batch mode, it executes the Pre-Render Publish Asset action on the outputs but doesn't render images. The value specifies the filename for dumping render pass information. Note: This can be used together with --versionup. Syntax: --prerender-publish=<pass info> Example: ./katana --batch --katana-file=/tmp/test.katana --t=1 --render-node=beauty --prerender-publish=/tmp/pass_info.xml |
--make-lookfilebake-scripts |
Used to write out a number of Python files that can be executed in Batch mode to write look files. Syntax: --make-lookfilebake-scripts=<script directory> Example: ./katana --batch --katana-file=/tmp/bake.katana --t=1 --make-lookfilebake-scripts=/tmp/bake_scripts ./katana --script /tmp/bake_scripts/preprocess.py ./katana --script /tmp/bake_scripts/lf_bake_default.py ./katana --script /tmp/bake_scripts/postprocess.py |
--postrender-publish |
In Batch mode, it executes the Post-Render Publish Asset action on the outputs but doesn't render images. The value specifies the filename for dumping render pass information. Note: This can be used together with --versionup. Syntax: --postrender-publish=<pass info> Example: ./katana --batch --katana-file=/tmp/test.katana --t=1 --render-node=beauty --postrender-publish=/tmp/pass_info.xml |
--versionup |
Used to specify that you want to version up assets when publishing to the asset management system. Syntax: --versionup Example: ./katana --batch --katana-file=/tmp/test.katana --t=1 --render-node=beauty --versionup |
Note: Setting threads3d or threads2d through Batch mode launch arguments takes precedence over the interactiveRenderThreads3D, and interactiveRenderThreads2D settings in Katana's Edit > Preferences > application menu.