Instructors from POP partners BSC, JSC and UVSQ supported the 31st VI-HPS Tuning Workshop held over four days from 9 to 12 April at the Innovative Computing Laboratory (ICL) of the University of Tennessee in Knoxville (UTK), USA.
Twelve participants from the university and nearby Oak Ridge National Laboratory (ORNL) were introduced to the range of VI-HPS tools and guided when applying them to their own parallel application codes. ARM, LLNL, TU Dresden and University of Oregon also provided instructors, and Texas Advanced Computing Center (TACC) generously provided accounts to access reserved partitions of their Stampede2 and Wrangler computer systems based on Intel Xeon and Xeon Phi processors. Participants also installed the latest VI-HPS tools on additional computer systems where they had their own accounts, including Summit at ORNL with IBM POWER9 and NVIDIA V100 processors, allowing them to do measurements on those systems as well. Parallel execution insights and performance issues identified using the tools could be pursued to investigate and tune application performance and address scalability limitations.
Coaching provided by the tools instructors was greatly appreciated by all of the workshop participants. The Virtual Institute - High Productivity Supercomputing (VI-HPS) regularly offers performance measurement and analysis workshops, however, this was the first event organised by founding partner UTK and the fourth outside of Europe.