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Graph Dump {#dev_guide_graph_dump}
==================================
oneDNN supports dumping the computation graph constructed with graph API. The
dumped graph can be used for visualization and performance benchmark.
## Build-Time Controls
The graph dumping feature only works when `ONEDNN_BUILD_GRAPH` is ON.
| CMake Option | Supported values (defaults in bold) | Description |
| :--- | :--- | :--- |
| ONEDNN_ENABLE_GRAPH_DUMP | ON, **OFF** | Controls dumping (@ref dev_guide_graph_dump) graph artifacts |
## Run-Time Controls
When the feature is enabled at build time, the environment variable
`ONEDNN_GRAPH_DUMP` can be used to control the serialization level. This option
accepts setting flags. These flags can be combined together to make the library
dumping different files. For example, the below setting will generate files
containing library graph and subgraphs in each partition.
| Variable | Flags | Description |
| :--- | :--- |:--- |
| ONEDNN_GRAPH_DUMP | (default) | No graph or subgraph dumped |
| | graph | Library graph |
| | subgraph | Library subgraph contained in a partition |
~~~bash
ONEDNN_GRAPH_DUMP=graph,subgraph ./application
~~~
This may produce graph JSON files as follows:
~~~bash
onednn_graph_verbose,info,serialize graph to a json file graph-100001.json
onednn_graph_verbose,info,serialize graph to a json file graph-100001-partitioning.json
onednn_graph_verbose,info,serialize graph to a json file graph-100002-1313609102600373579.json
onednn_graph_verbose,info,serialize graph to a json file graph-100003-12829238476173481280.json
~~~
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