Cerfacs Enter the world of high performance ...

From 29 November 2021 to 30 November 2021

Parallel programming models MPI, OpenMP

nasri |  

COMPLETE
Deadline for registration: 15 days before the starting date of each training
Duration : 2 days / (14 hours)

Before signing up, you may wish to report us any particular constraints  (schedules, health, unavailability…) 

at the following e-mail address : training@cerfacs.fr

Satisfaction index

In November 2019, 100% of the participants were satisfied or very satisfied

(results collected from 12 respondents out of 17 participants, a response rate of 70%)

Abstract

This course aims at learning to parallelize applications in order to reduce compute time or solve larger problems using MPI/OpenMP programming models. The course is taught using formal lectures and practical/programming sessions. All examples in the course will be done in Fortran, the exercices can be done in Fortran or C.

Objective of the training

To learn the fundamental concepts of parallel programming models MPI, OpenMP

Learning outcomes

Learn to parallelize applications in order to reduce compute time or solve larger problems using MPI/OpenMP programming models.

On completion of this course students should be able to :

  • parallelise a simple C/FORTRAN program (50 lines) with MPI library and/or OpenMP directives,
  • understand and use OpenMP directives ( worksharing , synchronisation),
  • understand and use MPI functions (point to point communications, collectives, communicators, topologies).

Teaching methods

The training is an alternation of theoretical presentations and practical work. A multiple choice question allows the final evaluation. The training room is equipped with computers, the work can be done in sub-groups of two people.

Target participants

Engineers, physicists, computer scientists and numerical analysts who wish to learn the fundamental concepts of parallel programming models MPI, OpenMP.

Prerequisites and registration

In order to follow this course, you need to:

  • know how to use basic Linux commands,
  • master one of these two programming languages : Fortran or C (It is not possible to do the exercises in Java or in Python),
  • the training can take place in French or English depending on the audience, level B2 of CEFR is required.

In order to verify that the prerequisites are satisfied, one the following questionnaire must be completed (Fortran or C). You need to get at least 75% of correct answers in order to be authorized to follow this training session. If you don’t succeed it, your subscription will not be validated. You only have two chances to complete it.

Questionnaire Fortran : https://goo.gl/forms/IqDvVXfOYYqR0NMr1

Questionnaire C : https://goo.gl/forms/WwR3wvQVz2dYy6AX2

After completing the pre-requisite tests and obtaining at least 75% correct answers, you can register:

Pre-registration

Referent Teacher: Iabelle d’Ast

Fee

  • Trainees/PhDs/PostDocs : 140 € excl. tax
  • CERFACS shareholders/CNRS/INRIA : 400 € excl. tax
  • Public : 800 € excl. tax

Program

(Every day from 9h to 17h30)

Day 1

  • 9h : Welcome coffee
  • 9:15 – 10h00 : Introduction to parallel computing and parallel programming models MPI – OpenMP
    OpenMP fundamentals – Shared memory
  • 10h – 10h45 : Exercises
  • 10h45 – 11h : Break
  • 11h – 11h45 : Worksharing
  • 11h45 – 12h30 : Exercises
  • 12h30 – 14h : Lunch
  • 14h – 14h45 : Synchronizations – Traps
  • 14h45 – 15h30 : Exercises
  • 15h30 – 15h45 : Break
  • 15h45 – 16h30 : Introduction to MPI parallel programming model – Point to point communications
  • 16h30 – 17h30 : Exercises

Day 2

  • 9h – 10h00 : Point to point communications – Collectives communications
  • 10h – 10h45 : Exercises
  • 10h45 – 11h : Break
  • 11h – 11h45 : Collectives communications
  • 11h45 – 12h30 : Exercises
  • 12h30 – 14h : Lunch
  • 14h – 14h45 : Derived datatypes
  • 14h45 – 15h30 : Exercises
  • 15h30 – 15h45 : Break
  • 15h45 – 16h30 : Communicators – Topologies
  • 16h30 – 17h15 : Exercises
  • 17h15 – 17h30 : Conclusions

Evaluation of learning

A final examination will conducted during the training session.

 

Pre-registration

NEWS

Thierry Poinsot officially entered the French Academy of Sciences

CERFACS |  8 November 2021

Thierry Poinsot officially entered the French Academy of Sciences on October 12. See presentation here :Read more


The AVBP code from CERFACS at the heart of for PRACE projects from the 23rd call

CERFACS |  30 September 2021

Cerfacs is involved in three PRACE projects of the 23rd call for which hour allocation runs from 01/10/2021 to 30/09/2022. Researchers from ECL/LMFA UMR5509 (Ecole Centrale de Lyon) and IMFT (UMR 5502) laboratories have earned projects entirely based on the use of the LES solver developed by Cerfacs AVBP and involve the support of experts from the CFD and COOP teams underling the importance and effectiveness of collaborations between French labs and Cerfacs. Alexis Giauque from ECL/LMFA UMR5509 (Ecole Centrale de Lyon) has obtained not only one but two PRACE projects! The first project LESFAN (RA0101, 30 000 000 CPU hours on Irene/Rome TGCC) is based on the use of AVBP in the turbomachinery version to study the generation of noise by a fan of a real airplane engine. The second, PRACE-EDGES (RA0101, 40 000 000 CPU hours on Irene/Rome TGCC) focuses on LES modeling of dens gas in complex geometries. To do so, the LMFA Team has developed advanced thermodynamic closures in AVBP allowing the direct simulation of such flows. Laurent Selle from IMFT (UMR 5502) has received CPU hours for the GASTON project (RA0061, 30 000 000 CPU hours on Marenostrum BSC) which aims to study the structure of hydrogen flames in porous materials. For this, IMFT and Cerfacs will perform coupled simulations considering the reactive flow with AVBP as well as the conduction in the porous medium with AVTP which is known to play an central role in the flame stabilization process. Carlos Perez Arroyo from IMFT (UMR 5502) received 16 Mh CPU hours on Joliot-Curie Skylake partition to support his project WONDER.Read more

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