Course schedule

Wednesday November 23

All times CET.

09:30	Welcome, introduction to the course Presenter: Kurt Lust (LUST)
09:45	Introduction to the HPE Cray Hardware and Programming Environment The HPE Cray EX hardware architecture and software stack The Cray module environment and compiler wrapper scripts Presenter: Harvey Richardson (HPE)
10:55	break (25 minutes)
11:20	Running Applications Examples of using the Slurm Batch system, launching jobs on the front end and basic controls for job placement Exercises: about 45 minutes
12:40	lunch break (80 minutes)
14:00	Compilers and Libraries An introduction to the compiler suites available How to get additional information about the compilation process Special attention is given the Cray Compilation Environment (CCE) noting options relevant to porting and performance. CCE classic to Clang transition Exercises: about 20 minutes
15:30	break (30 minutes)
16:00	Advanced Placement More detailed treatment of Slurm binding technology and OpenMP controls Exercises: about 30 minutes Presenter: Jean Pourroy
17:00	Open Questions & Answers Participants are encouraged to continue with exercises in case there should be no questions.
17:30	End of first course day

Thursday November 24

All times CET.

09:30	Introduction to Perftools, Performance Analysis Part 1 and Part 2, and Debugging at Scale Introduction to perftools Pertfools lite modules Loop work estimates Reveal for performance data display, compiler feedback and automatedscoping Debugging tools at scale Presenters: Alfio Lazarro and Thierry Braconnier (HPE)
12:15	lunch break (60 minutes)
13:15	MPI Topics on the HPE Cray EX Supercomputer High level overview of Cray MPI on Slingshot, useful environment variable controls. Rank reordering and MPMD application launch. Exercises: about 20 minutes Presenter: Harvey Richardson
14:15	Optimizing Large Scale I/O Introduction into the structure of the Lustre Parallel file system Tips for optimising parallel bandwidth for a variety of parallel I/O schemes Examples of using MPI-IO to improve overall application performance. Advanced Parallel I/O considerations Further considerations of parallel I/O and other APIs. Being nice to Lustre Consideration of how to avoid certain situations in I/O usage that don’t specifically relate to data movement. Presenter: Harvey Richardson Slide file: /project/project_465000297/slides/12_IO_short_LUMI.pdf on LUMI only.
15:00	break (20 minutes)
15:20	LUMI Software Stacks Software policy Software environment on LUMI Installing software with EasyBuild (concepts, contributed recipes) Containers for Python, R, VNC (container wrappers) Presenter: Kurt Lust (LuST)
16:40	LUMI User Support LUMI documentation What can we help you with and what not? How to get help, how to write good support requests Some typical/frequent support questions of users on LUMI-C? Presenter: Jørn Dietze (LUST)
17:10	Open Questions & Answers Participants are encouraged to continue with exercises in case there should be no questions.
17:30	End of second course day