Publications of Torsten Hoefler

Jerónimo S. Garcia, Salvatore Di Girolamo, Sokol Kosta, J.J. Vegas Olmos, Rami Nudelman, Torsten Hoefler, Gil Bloch:

Offloaded MPI message matching: an optimistic approach

(In SC24-W: Workshops of the International Conference for High Performance Computing, Networking, Storage and Analysis, pages 457-469, 2024)

Publisher Reference

Abstract

Message matching is a critical process ensuring the correct delivery of messages in distributed and HPC environments. The advent of SmartNICs presents an opportunity to develop offloaded message-matching approaches that leverage this on-NIC programmable accelerator, retaining the flexibility of software-based solutions (e.g., tailoring to application matching behaviors or specialization for non-MPI matching semantics) while freeing up CPU resources. This can be especially beneficial for intensive I/O systems, such as those protected with PQC. In this work, we propose a bin-based MPI message approach, Optimistic Tag Matching, explicitly designed for the lightweight, highly parallel architectures typical of on-path SmartNICs. We analyze several MPI applications, showing how most of them present a matching behavior suitable for offloading with the proposed strategy (i.e., low queue depths). Additionally, we show how, in those scenarios, offloaded optimistic matching maintains message rates comparable to traditional on-CPU MPI message matching while freeing up CPU resources.

Documents

Publisher URL: https://sc24.supercomputing.org/proceedings/workshops/workshop_pages/ws_exampi110.html

BibTeX

@article{,
  author={Jerónimo S. Garcia and Salvatore Di Girolamo and Sokol Kosta and J.J. Vegas Olmos and Rami Nudelman and Torsten Hoefler and Gil Bloch},
  title={{Offloaded MPI message matching: an optimistic approach}},
  year={2024},
  pages={457-469},
  booktitle={SC24-W: Workshops of the International Conference for High Performance Computing, Networking, Storage and Analysis},
  source={http://www.unixer.de/~htor/publications/},
}


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