21-25 May 2012
New York City, NY, USA
US/Eastern timezone

Advanced Modular Software Performance Monitoring

Parallel Software Engineering, Data Stores and Databases (track 5) Software Engineering, Data Stores and Databases
22 May 2012, 14:45
25m
Room 802 (Kimmel Center)

Room 802

Kimmel Center

Speaker

Alexander Mazurov (Universita di Ferrara (IT))

Description

The LHCb software is based on the Gaudi framework, on top of which are built several large and complex software applications. The LHCb experiment is now in the active phase of collecting and analyzing data and significant performance problems arise in the Gaudi based software beginning from High Level Trigger (HLT) programs and ending with data analysis frameworks (DaVinci). It’s not easy to find hot spots in the code - only special tools can help to understand where CPU or memory usage is not reasonable. There exist many performance analyzing tools, but the main problem is that they show reports in terms of class and function names and such information usually is not very useful - the majority of algorithm developers use the Gaudi framework abstractions and usually do not know about functions which lie at the lower level. We will show a new approach which adds to performance reports a higher abstraction level based on knowledge of framework architecture and run-time object properties. A set of profiling tools (based on sampling and unwind library - a software for introspection of the program call-chain) and visualizing interfaces has been developed and deployed.
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Primary author

Alexander Mazurov (Universita di Ferrara (IT))

Presentation Materials