NERSC’s Perlmutter uses LDMS for sub-second, near-zero-overhead performance monitoring across its shared network, Lustre, and Spectrum Scale filesystems. We’ll present a userspace daemon that feeds eBPF program output into LDMS for kernel-level metric collection at scale, plus a companion eBPF filesystem latency monitor for real-time visibility into Perlmutter’s shared filesystem performance.
Ershaad Basheer is a HPC Systems Engineer at the National Energy Research Scientific Computing Center (NERSC) in the Lawrence Berkeley National Laboratory. He is part of the group that supports the Lab's largest supercomputing system, Perlmutter. While managing a system such as Perlmutter requires generalist knowledge and skills, Ershaad is particularly interested in debugging and observations at the kernel level. Learning tools such as the drgn debugger and exploring Rust and eBPF are the kind of things that he finds captivating. Ershaad graduated with a Bachelors in Electronics and Communication engineering from Kannur University in India and has a thesis-track Masters in Science degree from the Jawaharlal Nehru Centre for Advanced Scientific Research in Bengaluru, India. He previously was an HPC engineer at Temple University, Philadelphia where he also taught a graduate course in programming.
