Pratyush Das das160@purdue.edu I am a PhD student in CS at Purdue University, studying compilers, advised by Professor Milind Kulkarni. I am currently working on compiler optimizations for sparse tensor operations. In the past, I also spent some time on speeding up MapReduce using staging compilers. During the summer of 2023, I interned at Apple, working on a custom target and runtime for the Swift programming language. As an undergrad, I interned with Princeton University for multiple years, on software for High Energy Physics. During this period, I was a core developer of two software projects that found significant adoption in the Physics community - Awkward Array, a library for irregularly shaped tensor computations, and uproot, a python re-implementation of I/O for Physics data motivated by interoperability with other existing Python packages. I also made significant contributions to the following LLVM based projects - Enzyme, Cling and Clang. My CV can be found here.

Publications

• DiSh: Dynamic Shell-Script Distribution

  Tammam Mustafa, Konstantinos Kallas, Pratyush Das, and Nikos Vasilakis

  20th USENIX Symposium on Networked Systems Design and Implementation (NSDI, 2023)

• AwkwardForth: accelerating Uproot with an internal DSL

  Jim Pivarski, Ianna Osborne, Pratyush Das, David Lange, and Peter Elmer

  25th International Conference on Computing in High-Energy and Nuclear Physics (vCHEP, 2021)

• Awkward Array: JSON-like data, NumPy-like idioms

  Jim Pivarski, Ianna Osborne, Pratyush Das, Anish Biswas, and Peter Elmer

  19th Python in Science Conference (SciPy USA, 2020)

• The Scikit HEP Project overview and prospects

  Eduardo Rodrigues, Benjamin Krikler, Chris Burr, Dmitri Smirnov, Hans Dembinski, Henry Schreiner, Jaydeep Nandi, Jim Pivarski, Matthew Feickert, Matthieu Marinangeli, Nick Smith, and Pratyush Das

  24th International Conference on Computing in High-Energy and Nuclear Physics (CHEP 2019)

Talks

• GSoC Experience - Enzyme (LLVM Developers' Meeting, 2021)

• Python in High Energy Physics (PyCon USA, 2020)

• Language Transformations for the Awkward Array library (IRIS-HEP Fellow Presentations, 2020)

• CUDA backend for the Awkward Array project (Princeton University Liberty Research Group, 2020)

• Python in High Energy Physics (SciPy India, 2019)

• Writing files with uproot (PyHEP, 2019)

• Writing TTrees with uproot (IRIS-HEP: Summer student project presentations, 2019)

• Writing files with uproot (ROOT Users' Workshop, 2018)

• Writing files with uproot (DIANA-HEP: Updates on ROOT I/O, 2018)

• Separation of Concerns - ROOT4J and Spark-Root (CMS Big Data Science Meeting, 2017)

Teaching

• CS 240 (Programming in C) - Fall 2021, Spring 2022
• CS 354 (Operating Systems) - Fall 2022, Spring 2023, Fall 2023