This digital garden is an experiment in publishing some of the material I maintain in a private Obsidian vault as a supplement to my personal website.
Who am I?
I work as a system architect who helps design some of the largest supercomputers in the world. I spent seven years doing this in the the U.S. Department of Energy complex, where I contributed to the design and evaluation of supercomputers including Perlmutter, Frontier, and El Capitan. I then joined Microsoft where I now work on the design of supercomputers designed for LLM training such as Eagle.
The long version of my life story can be found on my personal website’s About Me page.
What do I do?
Most recently, I have been:
- Playing with discrete event simulation to model the steady-state availability of GPUs in GB200 given the different blast radii of the ND GB200 v6 infrastructure being built in Azure.
- Understanding how LLM training at scale is performed so I can predict how system failures will affect job reliability.
What have I done?
From 2015 to 2023, I specialized in storage for HPC and actively participated in that community. I wrote a bunch of papers around file system performance analysis, reliability, utilization, and architectural philosophy. I also managed a team of storage engineers for a year and dabbled in the broader area of data management for scientific computing.