John Pennycook
Developer Technology Engineer at NVIDIA
St. Austell, England, United Kingdom
Summary
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Rockstar🎓
Top SchoolJohn Pennycook is a Developer Technology Engineer with eight years of experience specializing in parallel algorithms, performance analysis, and performance portability across CPUs and GPUs. With a PhD in Computer Science from the University of Warwick and roles at Intel and now NVIDIA, he has repeatedly translated deep hardware-software insight into measurable application speedups and scalable performance models. He is fluent in C++, Fortran, CUDA, SYCL, OpenMP, MPI and Python, authored 30+ publications with over 1,500 citations, and helped shape SYCL and ISO C++ interoperability at the standards level. Known for making code run faster, he has built tools and methodologies widely adopted by researchers and customers to quantify and improve performance portability across architectures.
8 years of coding experience
15 years of employment as a software developer
Doctor of Philosophy (Ph.D.), Computer Science, Doctor of Philosophy (Ph.D.), Computer Science at University of Warwick
English
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (91)
python10
windows10
sycl10
3d10
game-development10
scientific-computing10
opencl10
gpgpu10
intel10
linux10
gdscript10
debugging10
llvm10
maintainability10
oneapi10
Programming languages (14)
Github contributions (5)
Pennycook/llvm
Apr 2019 - Aug 2025
This is the canonical git mirror of the LLVM subversion repository. Please see http://llvm.org/ for instructions on contributing to LLVM.
Contributions:431 pushes, 180 branches in 6 years 4 months
subversionclanginstructionslibgit2git-mirror
P3HPC/p3hpc.github.io
Dec 2020 - Nov 2025
Contributions:1 review, 27 PRs, 80 pushes in 4 years 11 months
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