HPC Workshop, July 5 - 8 2022

Large Scale Scientific Computations

NTUA Inter-Departmental Postgraduate Program:
Computational Mechanics

Sponsored by EuroCC@Greece

Workshop Description

This workshop is dedicated to students with some programming experience to learn the three parallel programming models MPI, CUDA and OpenMP. It starts on beginners level but also includes some advanced features like the parallelization of a Krylov type solver. Hands-on sessions (in C and Fortran) allow students to immediately test and understand the main building blocks of these parallel programming models.

Location

NTUA School of Chemical Engineering (PC-Lab)

Format

On-Site
Hands-on

Dates

July 5 - 8, 2022

Application deadline

June 17th, 2022

Workshop Topics

The main topics are:

  1. the SPMD (Single Program Multiple Data) parallel programming model and how it is implemented using the communication protocol MPI (Message Passing Interface),
  2. the operation and architecture of GPUs (Graphics Processing Unit) as well as their use for large-scale computing through the parallel computing platform CUDA (Compute Unified Device Architecture) and
  3. the parallel programming with OpenMP which enables serial programs to be parallelized using compiler directives.

Prerequisites

  1. Familiarity with Linux
  2. Basics/principles of programming (C or FORTRAN is preferred).

The Greek EuroCC Hub for
High-Performance Computing

Speakers


Georgios Goumas

Georgios Goumas is an Associate Professor at the School of ECE of the National Technical University of Athens. He graduated from the Dept. of Electrical and Computer Engineering of the National Technical University of Athens (NTUA) (1999). He received a PhD Degree from the School of Electrical and Computer Engineering of NTUA in January 2004. He is currently a senior researcher at the Computing Systems Laboratory (CSLab) in the School of Electrical and Computer Engineering of NTUA. His research interests include high-performance computing and architectures, cloud computing, resource allocation policies, resource-demanding applications, sparse algebra, automatic parallelizing compilers, parallel programming models, etc. He has published more than 80 research papers in journals, international conferences and peer-reviewed workshops. He has worked in several European and National R&D programs in the field of High Performance Computing, Cloud Computing, Networking and Storage for IT systems.

Antony Spyropoulos

Dr. Antony Spyropoulos is a Laboratory Teaching Stuff at the School of Chemical Engineering of the National Technical University of Athens (NTUA). He received a degree in Chemical Engineering from the NTUA (1996) and a PhD (2003) from the same institution. His research interests are: parallel algorithms for computational mechanics, non-linear analysis (bifurcation, stability) and iterative methods for large scale linear equation systems and eigenvalue problems. He has taught courses in programming languages and numerical methods.

Xenofon Trompoukis

Dr. Xenofon Trompoukis is currently a research officer in the Parallel CFD & Optimization Unit of the Lab of Thermal Turbomachines of the School of Mechanical Engineering of NTUA. He received a degree in Mechanical Engineering from the NTUA (2007) and a PhD (2012) from the same institution. He has participated in several research projects with emphasis on aerodynamic and recently multi-disciplinary gradient-based optimization methods assisted by the adjoint technique while developing and using a GPU-enabled CFD s/w running on HPC systems. His research interests are: parallel programming, GPU programming, CFD, adjoint-based optimization.

Workshop Program


Tuesday, July 5

10:00 - 10:15

Welcome

10:15 - 12:00

Introduction to parallel computer architectures

12:00 - 12:15

Break

12:15 - 14:00

Introduction to MPI

14:00 - 14:30

Break

14:30 - 16:00

Programming with MPI (Hands-on) 

Wednesday, July 6

10:00 - 12:00

Programming with MPI (Hands-on)   

12:00 - 12:15

Break

12:15 - 14:00

The SPMD parallel programming model: Application to the finite element method 

14:00 - 14:30

Break

14:30 - 16:00

Introduction to GPUs and their programming through the CUDA environment

Thursday, July 7

10:00 - 12:00

Programming with CUDA (Hands-on)  

12:00 - 12:15

Break

12:15 - 14:00

Programming with CUDA (Hands-on)    

14:00 - 14:30

Break

14:30 - 16:00

Programming with OpenMP (Hands-on)

Friday, July 8

10:00 - 16:00

Final exercise (MPI, CUDA, OpenMP) 

HPC Workshop July 2022

The HPC Workshop: Large Scale Scientific Computations was held at the School of Chemical Engineering of the National Technical University of Athens from July 5 to July 8, 2022.

A total of 20 participants from academic institutions (National Technical University of Athens, University of Ioannina), research centers (National Hellenic Research Foundation) and private companies (Naval DME - Engineering Company) attended this 4-day workshop.

At the last day, 13 participants successfully completed at least one parallel implementation of the final exercise (iterative solution of a linear system). Namely:

  • - 6 participants completed the MPI implementation,
  • - 2 participants the CUDA implementation and
  • - 3 participants the OpenMP implementation.

Moreover, 1 participant completed both the MPI and OpenMP implementations and 1 participant completed all implementations (MPI, CUDA and OpenMP).