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Dr. Christopher S. Simmons

Scientist-in-Residence, Cambridge Computer Services
Dr. Christopher S. Simmons is Cambridge Computer Services’ Scientist in Residence, responsible for providing thought leadership for clients and cultivating relationships in the HPC industry. He has over 25 years of experience in all facets of computational science and high performance computing. Christopher earned his PhD from the University of Texas at Austin in physical chemistry with an emphasis in computational quantum mechanics. He was the former Project Lead for OpenHPC and now heads up outreach activities for the project.
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Blueprint schematic of six condo nodes in three owner groups. Owner jobs hold their own nodes, scavenger work fills the idle gaps between them with a checkpoint mark at each preemption instead of lost work, and one preempted job resumes on another group's node.Dark-theme blueprint schematic of six condo nodes in three owner groups. Owner jobs hold their own nodes, scavenger work fills the idle gaps between them with a checkpoint mark at each preemption instead of lost work, and one preempted job resumes on another group's node.

Preempted, not lost: scavenger jobs on condo nodes

Cedana saves the preempted job's work, lets the owner run, and resumes the job when resources free up.

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