Performance Evaluation using the TAU Performance System

Europe/Stockholm
Room 304 (PDC)

Room 304

PDC

Teknikringen 14 10044 Stockholm
Sameer Shende (University of Oregon)
Description
To meet the needs of computational scientists to evaluate the performance of their parallel, scientific applications, we present the TAU Performance System®[http://tau.uoregon.edu]. This one-day workshop will cover performance evaluation of applications on the Linux clusters with GPUs at PDC, KTH. This workshop will focus on instrumentation techniques provided by TAU and demonstrate how performance data (both profile and trace data) can be collected in a straightforward manner using TAU’s (Tuning and Analysis Utilities) automated instrumentation. It will also cover how to analyze the performance data collected and drill down to find performance bottlenecks and determine their causes. The workshop will include some sample codes that illustrate the different instrumentation and measurement choices available to the users. Topics will cover generating performance profiles and traces with heap memory usage, observed I/O bandwidth and volume, and hardware performance counters data using PAPI. Hardware counter data can show not only which routines are taking the most time, but why? For example, because of cache misses, TLB misses, excess address arithmetic, or poor branch prediction behavior. Users and developers are welcome to contact the instructor (email: sameer@cs.uoregon.edu) ahead of time to begin collecting data so as to have it on hand for the workshop.
slides
    • 9:00 AM 10:30 AM
      Introduction to TAU, instrumentation and measurement options
    • 10:30 AM 10:45 AM
      Coffee Break 15m
    • 10:45 AM 12:00 PM
      TAU demonstration, hands-on exercises
    • 12:00 PM 1:30 PM
      Lunch 1h 30m
    • 1:30 PM 3:30 PM
      TAU Analysis tools: ParaProf and PerfExplorer, PAPI
    • 3:30 PM 3:45 PM
      Coffee Break 15m
    • 3:45 PM 6:00 PM
      TAU demonstration, hands-on session, working with applications, discussions