Todd Gamblin - Distinguished Member Of Technical Staff (SES.6) at High Performance Software Foundation (HPSF)

Todd Gamblin

Distinguished Member Of Technical Staff (SES.6) at High Performance Software Foundation (HPSF)

Livermore, California, United States

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Summary

🤩

Rockstar

🎓

Top School

Todd Gamblin is a Distinguished Member of Technical Staff at Lawrence Livermore National Laboratory with 17 years of experience building infrastructure for high-performance computing and developer productivity. He is the creator of Spack, a widely used open-source package manager for HPC, and leads major national projects including Packaging Technologies for the U.S. Exascale Computing Project and LLNL’s DevRAMP initiative. Todd combines deep research credentials (PhD in Computer Science) with practical engineering—recent contributions to Spack improved build reuse, environment handling, and release workflows. He chairs the High Performance Software Foundation, helping steer community-driven open-source efforts for scientific software. Known for tackling dependency management and performance analysis, he bridges software engineering, parallel computing, and large-scale systems integration.

17 years of coding experience

18 years of employment as a software developer

B.A., Computer Science, Japanese, B.A., Computer Science, Japanese at Williams College

High School Diploma, High School Diploma at Ravenscroft School

Ph.D., Computer Science, Ph.D., Computer Science at University of North Carolina at Chapel Hill

English, Japanese

Stackoverflow

Stats

59,097reputation

5.9mreached

152answers

3questions

Badges

unix

top-5%

substring

top-5%

primitive-types

top-5%

dictionary

top-5%

debugging

top-1%

java

top-5%

Github Skills (55)

algorithm10

debugging10

python10

package-management10

mpi10

build-system10

std10

apache10

cicd10

gcc10

ruby10

automation10

automation-testing10

stacktrace10

data-structures10

Programming languages (26)

CCMakeMakefileGoHTMLJupyter NotebookGroovyShell

Github contributions (5)

spack/spack

Jul 2014 - Jan 2023

A flexible package manager that supports multiple versions, configurations, platforms, and compilers.

Role in this project:

Build & Release Engineer

Contributions:27 releases, 2139 reviews, 2574 commits in 8 years 7 months

Contributions summary:Todd implemented functionality to improve the build process in Spack by adding options to control the reuse of dependencies and by optimizing the build and environment processes. They added more control over the setup and removal of environment files by introducing new environment configuration parameters, and created a new command to help with the workflow of managing and releasing Spack versions. These changes included refactoring existing code and refactoring and making the code more efficient.

compilerspythonradiussplatformslinux

tgamblin/cv

Apr 2011 - Mar 2022

Contributions:58 commits, 16 pushes in 11 years

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