Generating Bindings in MPICH
CoRR(2024)
摘要
The MPI Forum has recently adopted a Python scripting engine for generating
the API text in the standard document. As a by-product, it made available
reliable and rich descriptions of all MPI functions that are suited for
scripting tools. Using these extracted API information, we developed a Python
code generation toolbox to generate the language binding layers in MPICH. The
toolbox replaces nearly 70,000 lines of manually maintained C and Fortran 2008
binding code with around 5,000 lines of Python scripts plus some simple
configuration. In addition to completely eliminating code duplication in the
binding layer and avoiding bugs from manual code copying , the code generation
also minimizes the effort for API extension and code instrumentation. This is
demonstrated in our implementation of MPI-4 large count functions and the
prototyping of a next generation MPI profiling interface, QMPI.
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