aaronmarkham opened a new pull request #16512: detect number of procs during sphinx build URL: https://github.com/apache/incubator-mxnet/pull/16512 ## Description ## I ran into a build issue when making the python docs on an instance with 16 processors. The makefile for sphinx was hardcoded to 32 which I guess was fine for CI. The error was like this: ``` /work/mxnet/docs/python_docs/python/build/tutorials/packages/gluon/training/fit_api_tutorial.ipynb:395: WARNING: File not found: 'tutorials/packages/gluon/blocks/save_load_params.html#saving-model-parameters-to-file' Sphinx parallel build error: IndexError: list index out of range ``` I turned off parallel builds with Sphinx and it worked, then switched to this new code that detects the number of processors in the Makefile and that worked. ## Testing 1. Clone the repo. 2. [Install Docker and Docker for python and make it so docker doesn't need sudo to run](https://github.com/apache/incubator-mxnet/blob/master/ci/README.md). 3. Run the following two commands to build the mxnet binary, then build the python docs. ``` ci/build.py --docker-registry mxnetci --platform ubuntu_cpu_lite /work/runtime_functions.sh build_ubuntu_cpu_docs ci/build.py --docker-registry mxnetci --platform ubuntu_cpu_python /work/runtime_functions.sh build_python_docs ```
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