Matthew Ezell
HPC Systems Engineer at Oak Ridge National Laboratory
Knoxville, Tennessee, United States
Summary
👤
Senior🎓
Top SchoolMatthew Ezell is an HPC systems engineer with 13 years' experience operating and optimizing some of the world’s largest supercomputers, including long-term roles at Oak Ridge National Laboratory managing Summit and Frontier. He specializes in resource management (Slurm, LSF, TORQUE/Moab) and large-scale storage systems (Lustre, GPFS), and brings deep hands-on experience with IBM and HPE/Cray architectures. Matthew has led production operations for petascale systems such as Kraken and contributed to xCAT core to improve network configuration and switch management, reflecting strong back-end and DevOps skills in cluster orchestration. His electrical and computer engineering background grounds his work in systems-level thinking, from firmware and networking to scheduler policy. Based in Knoxville, Tennessee, he thrives on tackling performance and reliability challenges at extreme scale and translating lab-scale research needs into robust production infrastructure. A practical problem-solver, he often focuses on subtle operational improvements—like MTU defaults and switch discovery—that materially increase cluster stability and usability.
13 years of coding experience
6 years of employment as a software developer
Master of Science, Computer Engineering, Master of Science, Computer Engineering at University of Tennessee-KnoxvilleBachelor of Science, Electrical Engineering, Bachelor of Science, Electrical Engineering at University of Tennessee, Knoxville
Github Skills (10)
bash10
provisioning10
deploying10
perl10
networking10
infrastructure-management10
infrastructure9
dhcp9
documentation8
openbmc6
Programming languages (10)
Github contributions (5)
xcat2/xcat-core
Aug 2015 - Apr 2018
Code repo for xCAT core packages
Role in this project:
Back-end & DevOps Engineer
Back-end & DevOps EngineerContributions:34 commits, 32 PRs, 154 comments in 2 years 8 months
Contributions summary:Matthew primarily contributed to the xCAT-core project by enhancing the network configuration and management capabilities. This involved adding support for default MTU settings, modifying the schema to include an MTU column, and updating post-installation scripts. The user also worked on improving switch discovery and management, including sorting port output and skipping built-in MAC addresses on switches. Furthermore, the user addressed various documentation and configuration improvements to enhance user experience and system reliability.
bare-metalprovisioningremote-executioninfrastructureinfrastructure-management
mattaezell/xcat-core
Aug 2015 - Sep 2020
Contributions:83 pushes, 42 branches in 5 years 1 month
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