Thematic CERN School of Computing - autumn 2021

Name: Thematic CERN School of Computing - autumn 2021
Start: 2021-10-10T11:00:00+02:00
End: 2021-10-16T12:00:00+02:00
Location: Split, Croatia (or online)

10 Oct 2021, 11:00 → 16 Oct 2021, 12:00 Europe/Zagreb

Split, Croatia (or online)

Sebastian Lopienski (CERN), Joelma Tolomeo (CERN), Jarek Polok (CERN)

Description

The 9th Thematic CERN School of Computing (tCSC autumn 2021) will take place on October 10-16, 2021. The theme of the school is "Scientific Software for Heterogeneous Architectures" - see the academic programme for more details.

This school is organized by CERN in collaboration with the University of Split. Assuming a continuous positive evolution of the pandemic, the school will take place in Split, Croatia, and be hosted at the Mediterranean Institute For Life Sciences (MEDILS) Conference Centre. The Centre is a historical renovated building situated in a wooded and landscaped park located on the Adriatic Sea coast, a few kilometres from the centre of Split. (However, if the pandemic situation doesn't allow traveling or physical presence, the school will be moved to online format.)

Applications and Selection

Please note that we have a long waiting list of people who have applied to the previous edition of this school. Consequently, we will not open new applications for this school, and the participants will be selected from the existing waiting list. (If you have not applied for the previous school, and are not on the waiting list, but strongly believe you should take part in this school, please contact us at Computing.School@cern.ch by Sunday July 25th.)

Important Dates

early September ~~August 31~~ - invitations sent to the selected participants
Tuesday September 7 - deadline for confirming the participation
Wednesday September 15 - registration fee payment deadline
Sunday October 10 to Saturday October 16 - the school

CERN School of Computing

Computing.School@cern.ch

Sunday 10 October
- 11:00
  
  Registration
- 13:00
  
  Lunch
- 14:00
  
  Registration / Coffee break
- 1
  
  Welcome to the CERN School of Computing
  
  Speaker: Sebastian Lopienski (CERN)
  
  2021.10.10 tCSCautumn welcome.pdf
  
  2021.10.10 tCSCautumn welcome.pptx
- 2
  
  Self-presentation: 1 minute per person
  
  CSC core team - one slide per person.pdf
  
  tCSC 2021 autumn - self-presentations.pdf
- 17:15
  
  Visit of Split old town
- 19:00
  
  Outside Welcome Dinner
Monday 11 October
- 3
  
  Opening Session
  
  Speaker: Sebastian Lopienski (CERN)
  
  Introduction to CSC.pdf
  
  Introduction to CSC.pptx
  
  tCSC_about_Split_Puljak_2021.ppt
  
  tCSC autumn 2021 - opening ceremony.pdf
- 10:00
  
  Coffee break
- 4
  
  Preparing for the HL-LHC computational challenge
  
  In this talk we will introduce some basic concepts related to HEP data processing and analysis workflows, seeing them in action in the context of LHC experiments. We’ll also talk about the evolution of the LHC accelerator and experiments. We’ll characterise at a high level what are the consequences of those upgrades for the HEP data processing software, in particular in the context of an evolving hardware and computing infrastructure.
  
  Speaker: Danilo Piparo (CERN)
  
  Mattermost discussion channel
  
  tCSC2021_Intro.pdf
- 5
  Introduction to efficient computing
  Technologies and Platforms - lecture 1
  - The evolution of computing hardware and what it means in practice
  - The seven dimensions of performance
  - Controlling and benchmarking your computer and software
  - Software that scales with the hardware
  - Advanced performance tuning in hardware
  Speaker: Andrzej Nowak
  
  A.Nowak-01 Introduction to Efficient Computing-tCSC2021.pdf
  
  Mattermost discussion channel
- 6
  
  Announcements
  
  2021.10 tCSCautumn announcements 1 Monday.pdf
- 13:00
  
  Lunch
- 14:00
  
  Study time and/or daily sports
- 7
  
  Student lightning talks
  
  Speakers: Adam Abed Abud (University of Liverpool (GB) and CERN), Luca Giommi (Universita e INFN, Bologna (IT)), Marc Huwiler (Universitaet Zuerich (CH)), Riccardo De Maria (CERN), Stephan Hageboeck (CERN)
  
  1 rdemaria.pdf
  
  1 rdemaria.pptx
  
  2 HuwilerMarc_Heterogeneous_HLT_CMS.pdf
  
  3 Abed_Abud_lightening_talk_tCSC.pdf
  
  4 Giommi_talk.pdf
  
  5 Hageboeck
  
  5 Hageboeck - Detector Simulation on GPUs tCSC.pdf
  
  Student lightning talks.pdf
  
  Student lightning talks.pptx
- 16:10
  
  Coffee break
- 8
  Writing parallel software
  Parallel and Optimised Scientific Software - lecture 1
  - Amdahl's and Gustafson's laws
  - Asynchronous execution
  - Finding concurrency, task vs. data parallelism
  - Using threading in C++ and Python, comparison with multi-process
  - Resource protection and thread safety
  - Locks, thread local storage, atomic operations
  Speaker: Danilo Piparo (CERN)
  
  Mattermost discussion channel
  
  writingParallelSoftware.pdf
- 9
  Modern programming languages for HEP
  Parallel and Optimised Scientific Software - lecture 2
  - Why Python and C++ ?
  - Recent evolutions: C++ 11/14/17
  - Modern features of C++ related to performance
  - Templating versus inheritance, pros and cons of virtual inheritance
  - Python 3, and switching from Python 2
  Speaker: Sebastien Ponce (CERN)
  
  Course and exercise sources
  
  Mattermost discussion channel
  
  ModernProgramming.pdf
- 19:00
  
  Dinner at MEDILS
Tuesday 12 October
- 10
  Optimizing existing large codebase
  Parallel and Optimised Scientific Software - lecture 3
  - Measuring performance, tools and key indicators
  - Improving memory handling
  - The nightmare of thread safety
  - Code modernization and low level optimizations
  - Data structures for efficient computation in modern C++
  Speaker: Sebastien Ponce (CERN)
  
  Course and exercise sources
  
  LargeCodeOptimization-pres.pdf
  
  Mattermost discussion channel
- 11
  Hardware evolution and heterogeneity
  Technologies and Platforms - lecture 2
  - Accelerators, co-processors, heterogeneity
  - Memory architectures, hardware caching and NUMA
  - Compute devices: CPU, GPU, FPGA, ASIC etc.
  - The role of compilers
  Speaker: Andrzej Nowak
  
  A.Nowak-02 Hardware Evolution and Heterogeneity-tCSC2021.pdf
  
  Mattermost discussion channel
- 11:00
  
  Coffee break
- 12
  
  Announcements
  
  2021.10 tCSCautumn announcements 2 Tuesday.pdf
  
  Excursion.pdf
- 13
  Scientific computing on heterogeneous architectures
  Programming for Heterogeneous Architectures - lecture 1
  - Introduction to heterogeneous architectures and the performance challenge
  - From general to specialized: Hardware accelerators and applications
  - Type of workloads ideal for different accelerators
  - Trade-offs between multi-core and many-core architectures
  - Implications of heterogeneous hardware on the design and architecture of scientific software
  - Embarrassingly parallel scientific applications in HPC and CERN
  Speaker: Dorothea Vom Bruch (CPPM/CNRS)
  
  Mattermost discussion channel
  
  vom_Bruch_scientific_computing_heterogeneous_architectures.pdf
- 13:00
  
  Lunch
- 14:00
  
  Study time and/or daily sports
- 14
  
  School photo
- 15
  
  Optimizing existing large codebase - exercise
  
  Optimisation of an existing, production grade large codebase
  
  Speaker: Sebastien Ponce (CERN)
  
  exercise4.pdf
- 19:00
  
  Dinner at MEDILS
- 16
  
  Special evening talk: Future of the Universe and of Humanity
  
  Speaker: Ivica Puljak (University of Split)
  
  Mattermost discussion channel
Wednesday 13 October
- 17
  Data-oriented design
  Technologies and Platforms - lecture 3
  - Hardware vectorization in detail – theory vs. practice
  - Software design for vectorization and smooth data flow
  - How can compilers and other tools help?
  Speaker: Andrzej Nowak
  
  A.Nowak-03 Data Oriented Design-tCSC2021.pdf
  
  Mattermost discussion channel
- 18
  Practical vectorization
  Parallel and Optimised Scientific Software - lecture 4
  - Measuring vectorization level
  - What to expect from vectorization
  - Preparing code for vectorization
  - Vectorizing techniques in C++: intrinsics, libraries, autovectorization
  Speaker: Sebastien Ponce (CERN)
  
  Course and exercise sources
  
  Mattermost discussion channel
  
  PracticalVectorization-pres.pdf
- 11:00
  
  Coffee break
- 19
  
  Practical vectorization - exercise
  
  Speaker: Sebastien Ponce (CERN)
  
  exercise5.pdf
- 13:00
  
  Lunch
- 13:30
  
  Outdoor excursion
- 19:00
  
  Outside dinner
Thursday 14 October
- 20
  
  Guest lecture: Why is Higgs still a star?
  
  The discovery of the Higgs boson particle in 2012 was an astonishing triumph of high energy physics. In this talk I will try to convince you that precision measurements of the Higgs boson properties are a very exciting prospect. Not only it will lead to a better understanding of our Universe but it is also one of our best windows in to the unknown.
  
  Speaker: Toni Sculac (University of Split)
- 21
  Programming for GPUs
  Programming for Heterogeneous Architectures - lecture 2
  - From SIMD to SPMD, a programming model transition
  - Thread and memory organization
  - Basic building blocks of a GPU program
  - Control flow, synchronization, atomics
  Speaker: Dorothea Vom Bruch (CPPM/CNRS)
  
  Mattermost discussion channel
  
  vom_Bruch_programming_for_GPUs.pdf
- 11:00
  
  Coffee break
- 22
  
  Announcements
  
  2021.10 tCSCautumn announcements 4 Thursday.pdf
- 23
  Performant programming for GPUs
  Programming for Heterogeneous Architectures - lecture 3
  - Data locality, coalesced memory accesses, tiled data processing
  - GPU streams, pipelined memory transfers
  - Under the hood: branchless, warps, masked execution
  - Debugging and profiling a GPU application
  Speaker: Daniel Campora (University of Maastricht)
  
  dcampora_performant_programming_for_gpus.pdf
  
  Mattermost discussion channel
- 13:00
  
  Lunch
- 14:00
  
  Study time and/or daily sports
- 24
  
  Programming for heterogeneous architectures - exercise
  
  Speakers: Daniel Campora (University of Maastricht), Dorothea Vom Bruch (CPPM/CNRS)
  
  instructions_to_start_gpu_lab.pdf
- 19:00
  
  Dinner at MEDILS
Friday 15 October
- 25
  Design patterns and best practices
  Programming for Heterogeneous Architectures - lecture 4
  - Good practices: single precision, floating point rounding, avoid register spilling, prefer single source
  - Other standards: SYCL, HIP, OpenCL
  - Middleware libraries and cross-architecture compatibility
  - Reusable parallel design patterns with real-life applications
  Speaker: Daniel Campora (University of Maastricht)
  
  dcampora_design_patterns_and_best_practices.pdf
  
  Mattermost discussion channel
- 26
  
  Announcements
  
  2021.10 tCSCautumn announcements 5 Friday.pdf
  
  2021.10 tCSCautumn announcements 5 Friday.pptx
- 10:15
  
  Coffee break
- 27
  
  Programming for heterogeneous architectures - exercise
  
  Speakers: Daniel Campora (University of Maastricht), Dorothea Vom Bruch (CPPM/CNRS)
- 13:00
  
  Lunch
- 14:00
  
  Study time and/or daily sports
- 28
  Summary and future technologies overview
  Technologies and Platforms - lecture 4
  - Teaching program summary and wrap-up
  - Next-generation memory technologies and interconnect
  - Future computing evolution
  Speaker: Andrzej Nowak
  
  A.Nowak-04 Future Directions and Wrap-up-tCSC2021.pdf
  
  Mattermost discussion channel
- 16:30
  
  Coffee break
- 29
  
  Exam
- 30
  
  Closing Session
  
  Speaker: Sebastian Lopienski (CERN)
- 19:30
  
  Outside Closing Dinner
Saturday 16 October
- 09:00
  
  Departure

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Thematic CERN School of Computing - autumn 2021

Split, Croatia (or online)

Applications and Selection

Important Dates