Migrating Legacy Fortran to Python While Retaining Fortran ...
Start Introduction Solution Evaluation Eval.: Python to Fortran Eval.: Fortran to Python Details of mapping Conclusion Bibliography
Migrating Legacy Fortran to Python While Retaining Fortran-Level Performance
Through Transpilation and Type Hints
Mateusz Bysiek, Aleksandr Drozd, Satoshi Matsuoka
5PLZP *OTUJUVUF PG 5FDIOPMPHZ
bysiek.m.aa@m.titech.ac.jp, alex@smg.is.titech.ac.jp, matsu@is.titech.ac.jp
6th Workshop on Python for High-Performance and Scientific Computing, 14 November 2016
M.Bysiek, A.Drozd, S.Matsuoka (Tokyo Tech)
Transpiling to/from Python with type hints
PyHPC 2016, 14 November 2016 1 / 27
Start Introduction Solution Evaluation Eval.: Python to Fortran Eval.: Fortran to Python Details of mapping Conclusion Bibliography
Two-way translation, exhibit 1
English Japanese
A game. Open Google Translate. Enter a phrase in language A, translate it to language B, translate the result to language A, translate the latest result to language B, and so on until you encounter anything you've seen before.
I just called to say I love you. I just called to say I love you. ...
-- according to Google Translate () on 8 November 2016.
M.Bysiek, A.Drozd, S.Matsuoka (Tokyo Tech)
Transpiling to/from Python with type hints
PyHPC 2016, 14 November 2016 2 / 27
Start Introduction Solution Evaluation Eval.: Python to Fortran Eval.: Fortran to Python Details of mapping Conclusion Bibliography
Two-way translation, exhibit 2
English Japanese
I can't get no satisfaction. I can not get satisfied. I cant get it pleased. I can not get pleased with it. I can not get pleased with it. ...
-- according to Google Translate () on 8 November 2016.
M.Bysiek, A.Drozd, S.Matsuoka (Tokyo Tech)
Transpiling to/from Python with type hints
PyHPC 2016, 14 November 2016 3 / 27
Start Introduction Solution Evaluation Eval.: Python to Fortran Eval.: Fortran to Python Details of mapping Conclusion Bibliography
Two-way translation, exhibit 3
English French
I can't get no satisfaction. Je ne peux pas obtenir aucune satisfaction. I can not get no satisfaction. Je peux pas obtenir satisfaction. I can not get No Satisfaction. Je peux pas obtenir satisfaction. ...
-- according to Google Translate () on 8 November 2016.
M.Bysiek, A.Drozd, S.Matsuoka (Tokyo Tech)
Transpiling to/from Python with type hints
PyHPC 2016, 14 November 2016 4 / 27
Start Introduction Solution Evaluation Eval.: Python to Fortran Eval.: Fortran to Python Details of mapping Conclusion Bibliography
Two-way translation, exhibit 4
Fortran 77/90/95 Python 3
Not available.
-- according to Google () on 8 November 2016.
But why bother? Because Python is super-useful and Fortran is super-fast. If only we could:
? Take Fortran, and manipulate it as if it was (maintainable) Python. ? Take Python, and run it as if it was (super fast) Fortran. Then we could create maintainable HPC solutions that build upon decades of Fortran's legacy and achieve its top performance.
M.Bysiek, A.Drozd, S.Matsuoka (Tokyo Tech)
Transpiling to/from Python with type hints
PyHPC 2016, 14 November 2016 5 / 27
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