====== BoF: Analyzing Parallel I/O ======

===== Abstract =====

Parallel I/O performance can be a critical bottleneck for applications, yet users are often ill-equipped for identifying and diagnosing I/O performance issues. Increasingly complex hierarchies of storage hardware and software deployed on many systems only compound this problem. Tools that can effectively capture, analyze, and tune I/O behavior for these systems empower users to realize performance gains for many applications.

In this BoF, we form a community around best practices in analyzing parallel I/O and cover recent advances to help address the problem presented above, drawing on the expertise of users, I/O researchers, and administrators in attendance.

The primary objectives of this BoF are to: 1) highlight recent advances in tools and techniques for monitoring I/O activity in data centers, 2) to discuss experiences and limitations of current approaches, 3) to discuss and derive a roadmap for future I/O tools with the goal to capture, assess, predict and optimize I/O.

The BoF is held in conjunction with the [[http://sc21.supercomputing.org/|Supercomputing conference]].
The [[https://sc21.supercomputing.org/presentation/?id=bof116&sess=sess363|official announcement is listed here]].

|| Date || Tuesday, 16 November 2021  ||
|| Time || 5:15pm-6:45pm CST ||
|| Venue || Online, see the SC schedule for details || 

The BoF is powered by the [[https://www.vi4io.org|Virtual Institute for I/O]] and  [[http://www.esiwace.eu|ESiWACE]] ((ESiWACE has received funding from the European Union’s Horizon 2020 Research and Innovation Programme under Grant Agreement No 823988)).

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===== Organization =====

The BoF is organized by 
  * Shane Snyder (ANL, USA), [[ssnyder@mcs.anl.gov]]
  * [[about:people:julian_kunkel|Julian Kunkel]] (Georg-August-Universität Göttingen/GWDG), [[julian.kunkel@gwdg.de]]

===== Agenda =====

We have a series of (8 minute) talks followed by a longer discussion:

  * **Welcome** -- //Julian Kunkel, Shane Snyder//
  * **Introduction** -- //Shane Snyder//  \\ {{ :events:2021:21-bof-analyzing-intro.pdf |Slides}}
  * **Darshan tracing visualizing** -- //Jean Luca Bez// \\ {{ :events:2021:21-bof-analyzing-jeanluca.pdf |Slides}}
  * **Experience with the NERSC all-flash system** -- //Glenn Lockwood, Alberto Chiusole// \\ {{ :events:2021:21-bof-analyzing-nersc.pptx.pdf |Slides}}
  * **Exploring more ways to use IO500 benchmark and IO500 list** -- //Radita Liem// \\ {{ :events:2021:21-bof-analyzing-radita.pptx |Slides}}
  * **Determining I/O-Weather** -- //Julian Kunkel// \\ {{ :events:2021:21-bof-analyzing-kunkel.pdf |Slides}}
  * **I/O Monitoring with PIKA** -- //Sebastian Oeste// \\ {{ :events:2021:21-bof-analyzing-pika.pdf |Slides}}
  * **Panel and discussion** -- (moderated by Julian Kunkel)