Description: This seminar will present an overview of LIKWID and a subset of the tools available. This will also cover limitations of the tools on HPCMP systems.  The aim is to introduce user to a set of easy-to-use-tools to better understand a system’s architecture and how architectural differences can affect one’s application.

LIKWID tools were developed to provide a framework to quantify the impact of microarchitectural differences in a systematic way. LIKWID is a set of command line tools that can be used to

• Understand compute node topology including cores, caches, and NUMA
• Understand how to pin thread to virtual/physical cores or sockets
• Measure performance of a core or compute node
• Measure bandwidth using a core and a compute node
• Measure hardware performance counters for flops, memory access

Presenter(s): Dr. Karen Haines, GDIT / PET Location: Webcast Date & Time: August 15, 2:00p - 3:30p ET

Controlled by: DoD HPCMP Controlled by: PET Program CUI Category: OPSEC Limited Dissemination Control: FEDCON POC: Mr. Ronald Hedgepeth, pet@hpc.mil

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CUI