Keita Iwabuchi
Computer Scientist at Lawrence Livermore National Laboratory
Livermore, California, United States
Summary
🤩
Rockstar🎓
Top SchoolKeita Iwabuchi is a computer scientist with 11 years of experience in high-performance computing, specializing in memory management, I/O systems, and algorithms for large-scale graph analytics and machine learning. Based at Lawrence Livermore National Laboratory since 2014 through roles from intern to computer scientist, he blends research rigor (Ph.D. work at Tokyo Institute of Technology) with production-grade system software development. He contributes to open-source ecosystem tooling—maintaining the Metall package within the widely used Spack package manager—demonstrating attention to reproducible builds and cross-platform compatibility. Known for optimizing data-intensive workflows at scale, he brings both academic depth and practical engineering to tackle performance bottlenecks in large-scale data processing.
11 years of coding experience
3 years of employment as a software developer
Ph. D. (science), Ph. D. (science) at Tokyo Institute of Technology
Japanese, Chinese
Github Skills (8)
cmake10
package-management10
python10
boost9
build-tools9
package-manager8
package-manager-tool8
scientific-computing8
Programming languages (3)
Github contributions (5)
spack/spack
Feb 2020 - Nov 2022
A flexible package manager that supports multiple versions, configurations, platforms, and compilers.
Role in this project:
Backend Developer
Backend DeveloperContributions:3 reviews, 16 commits, 16 PRs in 2 years 9 months
Contributions summary:Keita primarily contributed to the development and maintenance of the Metall package within the spack/spack repository. Their work involved adding new versions (0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 0.10, 0.11, 0.12, 0.13, 0.14, 0.15, 0.16, 0.17, 0.18, 0.19, 0.20, 0.21, 0.22, 0.23, 0.23.1, 0.24, 0.25, 0.26, 0.27, 0.28, 0.29, and 0.30) of the Metall package within spack, which involved modifying the package.py file to include version information and SHA256 checksums. They also added support for build tests and adjusted dependencies, highlighting their role in package management and ensuring compatibility with the spack environment.
compilerspythonradiussplatformslinux
LLNL/saltatlas
May 2022 - Feb 2023
Contributions:3 reviews, 90 commits, 78 PRs in 9 months
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