Overview

With the increasing prevalence of multicore processors, shared-memory programming models are essential. OpenMP is a popular, portable, widely supported, and easy-to-use shared-memory model.

Since its advent in 1997, the OpenMP programming model has proved to be a key driver behind parallel programming for shared-memory architectures.  Its powerful and flexible programming model has allowed researchers from various domains to enable parallelism in their applications.  Over the more than two decades of its existence, OpenMP has tracked the evolution of hardware and the complexities of software to ensure that it stays as relevant to today’s high performance computing community as it was in 1997.

This workshop will cover a wide range of  topics, reaching from the basics of OpenMP programming using the "OpenMP Common Core" to really advanced topics. During each day lectures will be mixed with hands-on sessions on the LRZ system IvyMUC.

Group Picture

© Alessandro Podo (LRZ)

The group picture in full resolution can be found here.

Preliminary Agenda

Lecturers

Material

Day 1

Material provided under /lrz/sys/courses/openmp/Appentra/

Day 2 & 3

Material provided under /lrz/sys/courses/openmp/exercises/

Exercises

Day 1: Workshop-Feb20-examples.zip

Day 2&3: exercises.tar

Survey

Please fill out the survey under https://events.prace-ri.eu/event/947/surveys/633

IvyMUC Usage

General Information about the Linux-Cluster:

https://doku.lrz.de/display/PUBLIC/Linux+Cluster

Login to the system:

ssh -Y lxlogin10.lrz.de -l hpckurs??

Load pwtrainer module:

module use -a  /lrz/sys/share/modules/extfiles

module load pwtrainer

Load recent gcc version

module load gcc

module load gcc/9

do not use old gcc 4.8 version under /usr/bin/gcc , which is the gcc used when not loading any gcc module

Run pwtrainer:

pwtrainer

Sample batch file:

/lrz/sys/courses/openmp/job.sh

Submit a job:

sbatch --reservation=homp1w19_course  job.sh

srun --reservation=homp1w19_course program

List own jobs:

squeue -M ivymuc -u hpckurs??

Cancel jobs:

scancel jobid

Interactive Access: (not recommended for this course)


salloc --nodes=1 --time=02:00:00 --reservation=homp1w19_course  --partition=ivymuc_batch

srun --reservation=homp1w19_course --pty bash

X11 and ssh Clients

Login under Windows:

• [ Install Terminal Software putty: https://www.chiark.greenend.org.uk/~sgtatham/putty/latest.html ]
• [ Install Xming X11 Server for Windows: https://sourceforge.net/projects/xming/ ]
• Start xming and after that PUTTY
• Enter host name lxlogin10.lrz.de into the putty host field and click Open.
• Accept & save host key [only first time]
• Enter user name and password (provided by LRZ staff) into the opened console.

Login under Mac:

• Install X11 support for MacOS XQuartz:  https://www.xquartz.org/
• Open Terminal
• ssh -Y lxlogin10.lrz.de -l username
  
• Use user name and password (provided by LRZ staff)

Login under Linux:

• Open xterm
• ssh -Y lxlogin10.lrz.de -l username
• Use user name and password (provided by LRZ staff)

Social Event   

Place guaranteed only for participants who signed up for the social event (12 persons).

Wednesday, 12 February 2020, 19:30 - open end

Garchinger Augustiner

Gesindehaus GmbH
Freisinger Landstraße 4
85748 Garching b. München

089 20 966 739

http://www.garchinger-augustiner.com/