UL HPC School 2017[bis] PS1: Getting Started on the UL HPC platform
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![UL HPC School 2017[bis] PS1: Getting Started on the UL HPC platform UL High Performance](/docs-images/78/77065871/images/1-0.jpg "Computing (HPC) Team C. Parisot University of Luxembourg (UL), Luxembourg http://hpc.uni.")
1 UL HPC School 2017[bis] PS1: Getting Started on the UL HPC platform UL High Performance Computing (HPC) Team C. Parisot University of Luxembourg (UL), Luxembourg 1 / 34
2 Latest versions available on Github: UL HPC tutorials: UL HPC School: PS1 tutorial sources: / 34
3 Introduction Summary 1 Introduction 2 SSH Secure Shell 3 UL HPC Tutorial: Getting Started Step by step program of this practical session 4 Hands-On: Getting Started on ULHPC 3 / 34
4 Introduction Main Objectives of this Session Understand SSH Connect to the UL HPC Platform SSH configuration Generate your SSH key pair overcome port filtering Discovering, visualizing and reserving UL HPC resources Working environment Web monitoring interfaces OAR vs. SLURM Batch Scheduler Job management Software / Environement Modules 4 / 34
5 Summary 1 Introduction 2 SSH Secure Shell 3 UL HPC Tutorial: Getting Started Step by step program of this practical session 4 Hands-On: Getting Started on ULHPC 5 / 34
6 SSH: Secure Shell Ensure secure connection to remote (UL) server establish encrypted tunnel using asymmetric keys Public id_rsa.pub vs. Private id_rsa (without.pub) typically on a non-standard port (Ex: 8022) limits kiddie script Basic rule: 1 machine = 1 key pair the private key is SECRET: never send it to anybody Can be protected with a passphrase 6 / 34
7 SSH: Secure Shell Ensure secure connection to remote (UL) server establish encrypted tunnel using asymmetric keys Public id_rsa.pub vs. Private id_rsa (without.pub) typically on a non-standard port (Ex: 8022) limits kiddie script Basic rule: 1 machine = 1 key pair the private key is SECRET: never send it to anybody Can be protected with a passphrase SSH is used as a secure backbone channel for many tools Remote shell i.e remote command line File transfer: rsync, scp, sftp versionning synchronization (svn, git), github, gitlab etc. 6 / 34
8 SSH: Secure Shell Ensure secure connection to remote (UL) server establish encrypted tunnel using asymmetric keys Public id_rsa.pub vs. Private id_rsa (without.pub) typically on a non-standard port (Ex: 8022) limits kiddie script Basic rule: 1 machine = 1 key pair the private key is SECRET: never send it to anybody Can be protected with a passphrase SSH is used as a secure backbone channel for many tools Remote shell i.e remote command line File transfer: rsync, scp, sftp versionning synchronization (svn, git), github, gitlab etc. Authentication: password (better) public key authentication (disable if possible) 6 / 34
9 SSH: Public Key Authentication Client Local Machine local homedir ~/.ssh/ id_rsa owns local private key id_rsa.pub known_hosts logs known servers 7 / 34
10 SSH: Public Key Authentication Client Local Machine Server Remote Machine local homedir ~/.ssh/ id_rsa owns local private key remote homedir ~/.ssh/ authorized_keys knows granted (public) key id_rsa.pub known_hosts logs known servers 7 / 34
11 SSH: Public Key Authentication Client Local Machine Server Remote Machine local homedir ~/.ssh/ id_rsa owns local private key remote homedir ~/.ssh/ authorized_keys knows granted (public) key id_rsa.pub known_hosts logs known servers SSH server config /etc/ssh/ sshd_config ssh_host_rsa_key ssh_host_rsa_key.pub 7 / 34
12 SSH: Public Key Authentication Client Local Machine Server Remote Machine local homedir ~/.ssh/ id_rsa owns local private key remote homedir ~/.ssh/ authorized_keys knows granted (public) key id_rsa.pub 7 / 34
13 SSH: Public Key Authentication Client Local Machine Server Remote Machine local homedir ~/.ssh/ id_rsa id_rsa.pub owns local private key 1. Initiate connection 3. solve challenge using private key return response 2. create random challenge, encrypt using public key remote homedir ~/.ssh/ authorized_keys knows granted (public) key 4. allow connection iff response == challenge Restrict to public key authentication: /etc/ssh/sshd_config: PermitRootLogin no # Disable Passwords PasswordAuthentication no ChallengeResponseAuthentication no # Enable Public key auth. RSAAuthentication yes PubkeyAuthentication yes 7 / 34
14 SSH Setup on Linux / Mac OS OpenSSH natively supported; configuration directory : ~/.ssh/ package openssh-client (Debian-like) or ssh (Redhat-like) SSH Key Pairs (public vs private) generation: ssh-keygen specify a strong passphrase protect your private key from being stolen i.e. impersonation drawback: passphrase must be typed to use your key 8 / 34
15 SSH Setup on Linux / Mac OS OpenSSH natively supported; configuration directory : ~/.ssh/ package openssh-client (Debian-like) or ssh (Redhat-like) SSH Key Pairs (public vs private) generation: ssh-keygen specify a strong passphrase protect your private key from being stolen i.e. impersonation drawback: passphrase must be typed to use your key ssh-agent 8 / 34
16 SSH Setup on Linux / Mac OS OpenSSH natively supported; configuration directory : ~/.ssh/ package openssh-client (Debian-like) or ssh (Redhat-like) SSH Key Pairs (public vs private) generation: ssh-keygen specify a strong passphrase protect your private key from being stolen i.e. impersonation drawback: passphrase must be typed to use your key ssh-agent DSA and RSA 1024 bit are deprecated now! 8 / 34
17 SSH Setup on Linux / Mac OS OpenSSH natively supported; configuration directory : ~/.ssh/ package openssh-client (Debian-like) or ssh (Redhat-like) SSH Key Pairs (public vs private) generation: ssh-keygen specify a strong passphrase protect your private key from being stolen i.e. impersonation drawback: passphrase must be typed to use your key ssh-agent DSA and RSA 1024 bit are deprecated now! $> ssh-keygen -t rsa -b o -a 100 # 4096 bits RSA (better) $> ssh-keygen -t ed o -a 100 # new sexy Ed25519 Private (identity) key ~/.ssh/id_{rsa,ed25519} Public Key ~/.ssh/id_{rsa,ed25519}.pub 8 / 34
18 SSH Setup on Windows: the OLD way Putty Suite, includes: - PuTTY, the free SSH client - Pageant, an SSH authentication agent for PuTTY tools - PLink, th PuTTy CLI - PuTTYgen, an RSA and DSA key generation utility 9 / 34
19 SSH Setup on Windows: the OLD way Putty Suite, includes: - PuTTY, the free SSH client - Pageant, an SSH authentication agent for PuTTY tools - PLink, th PuTTy CLI - PuTTYgen, an RSA and DSA key generation utility PuTTY OpenSSH 9 / 34
20 SSH Setup on Windows: the OLD way Putty Suite, includes: - PuTTY, the free SSH client - Pageant, an SSH authentication agent for PuTTY tools - PLink, th PuTTy CLI - PuTTYgen, an RSA and DSA key generation utility PuTTY OpenSSH Putty keys are NOT supported by OpenSSH (yet can be exported) Binding Pageant with OpenSSH agent is NOT natively supported Third-party tools like ssh-pageant are made for that Combine nicely with Git bash with PLink, hostnames eventually refer to PuTTY Sessions NEVER to SSH entries in ~/.ssh/config This usage might be hidden... Ex: $GIT_SSH etc. 9 / 34
![[tabbed] Sessions management X11](/docs-images/78/77065871/images/21-1.jpg "server w.")
21 SSH Setup on Windows: the NEW way Use MobaXterm! [tabbed] Sessions management X11 server w. enhanced X extensions Graphical SFTP browser SSH gateway / tunnels wizards [remote] Text Editor / 34
22 SSH Basic Usage *.<domain>-intern.com gitlab bastion1.<domain>.com 11 / 34
23 SSH Basic Usage *.<domain>-intern.com gitlab bastion1.<domain>.com SSH 11 / 34
24 SSH Basic Usage *.<domain>-intern.com gitlab bastion1.<domain>.com OpenSSH ~/.ssh/config (Mac / Linux) Host uni_* User <LOGIN> Port 8022 Host uni_bastion1 Hostname bastion1.<domain>.com SSH 11 / 34
25 SSH Basic Usage *.<domain>-intern.com PuTTY / PLink / Pageant (Windows) Session uni_bastion1 - Hostname: bastion1.<domain>.com - Port: Connection/Data: username: <LOGIN> gitlab bastion1.<domain>.com OpenSSH ~/.ssh/config (Mac / Linux) Host uni_* User <LOGIN> Port 8022 Host uni_bastion1 Hostname bastion1.<domain>.com SSH 11 / 34
26 SSH Advanced Usage: SOCKS Proxy *.<domain>-intern.com gitlab bastion1.<domain>.com 12 / 34
27 SSH Advanced Usage: SOCKS Proxy *.<domain>-intern.com PuTTY / PLink / Pageant (Windows) Session uni_bastion1 - Hostname: bastion1.<domain>.com - Port: Connection/Data: username: <LOGIN> gitlab bastion1.<domain>.com OpenSSH ~/.ssh/config (Mac / Linux) Host uni_* User <LOGIN> Port 8022 Host uni_bastion1 Hostname bastion1.<domain>.com SSH 12 / 34
28 SSH Advanced Usage: SOCKS Proxy *.<domain>-intern.com PuTTY / PLink / Pageant (Windows) Session uni_bastion1 - Hostname: bastion1.<domain>.com - Port: Connection/Data: username: <LOGIN> gitlab bastion1.<domain>.com OpenSSH ~/.ssh/config (Mac / Linux) Host uni_* User <LOGIN> Port 8022 Host uni_bastion1 Hostname bastion1.<domain>.com SSH DOMAIN <domain>-intern.com NOT FOUND 12 / 34
29 SSH Advanced Usage: SOCKS Proxy *.<domain>-intern.com PuTTY / PLink / Pageant (Windows) Session uni_bastion1 - Hostname: bastion1.<domain>.com - Port: Connection/Data: username: <LOGIN> - Connection/SSH/Tunnels: Port 1080, Dynamic gitlab bastion1.<domain>.com OpenSSH ~/.ssh/config (Mac / Linux) Host uni_* User <LOGIN> Port 8022 Host uni_bastion1 Hostname bastion1.<domain>.com SOCKS LISTEN: localhost:1080 SSH -D 1080 (SOCKS 5 Proxy) 12 / 34
30 SSH Advanced Usage: SOCKS Proxy *.<domain>-intern.com PuTTY / PLink / Pageant (Windows) Session uni_bastion1 - Hostname: bastion1.<domain>.com - Port: Connection/Data: username: <LOGIN> - Connection/SSH/Tunnels: Port 1080, Dynamic gitlab bastion1.<domain>.com OpenSSH ~/.ssh/config (Mac / Linux) Host uni_* User <LOGIN> Port 8022 Host uni_bastion1 Hostname bastion1.<domain>.com SOCKS LISTEN: localhost:1080 SSH -D 1080 (SOCKS 5 Proxy) 12 / 34
31 SSH Advanced Usage: SOCKS Proxy *.<domain>-intern.com PuTTY / PLink / Pageant (Windows) Session uni_bastion1 - Hostname: bastion1.<domain>.com - Port: Connection/Data: username: <LOGIN> - Connection/SSH/Tunnels: Port 1080, Dynamic gitlab bastion1.<domain>.com OpenSSH ~/.ssh/config (Mac / Linux) Host uni_* User <LOGIN> Port 8022 Host uni_bastion1 Hostname bastion1.<domain>.com SOCKS LISTEN: localhost:1080 SSH -D 1080 (SOCKS 5 Proxy) 12 / 34
32 SSH Advanced Usage: SOCKS Proxy *.<domain>-intern.com PuTTY / PLink / Pageant (Windows) Session uni_bastion1 - Hostname: bastion1.<domain>.com - Port: Connection/Data: username: <LOGIN> - Connection/SSH/Tunnels: Port 1080, Dynamic gitlab bastion1.<domain>.com OpenSSH ~/.ssh/config (Mac / Linux) Host uni_* User <LOGIN> Port 8022 Host uni_bastion1 Hostname bastion1.<domain>.com SOCKS LISTEN: localhost:1080 SSH -D 1080 (SOCKS 5 Proxy) 12 / 34
33 SSH Advanced Usage: SOCKS Proxy *.<domain>-intern.com PuTTY / PLink / Pageant (Windows) Session uni_bastion1 - Hostname: bastion1.<domain>.com - Port: Connection/Data: username: <LOGIN> - Connection/SSH/Tunnels: Port 1080, Dynamic gitlab bastion1.<domain>.com OpenSSH ~/.ssh/config (Mac / Linux) Host uni_* User <LOGIN> Port 8022 Host uni_bastion1 Hostname bastion1.<domain>.com SOCKS LISTEN: localhost:1080 SSH -D 1080 (SOCKS 5 Proxy) 12 / 34
34 SSH Advanced Usage: ProxyCommand *.<domain>-intern.com gitlab bastion1.<domain>.com 13 / 34
35 SSH Advanced Usage: ProxyCommand *.<domain>-intern.com PuTTY / PLink / Pageant (Windows) Session uni_bastion1 - Hostname: bastion1.<domain>.com - Port: Connection/Data: username: <LOGIN> gitlab bastion1.<domain>.com OpenSSH ~/.ssh/config (Mac / Linux) Host uni_* User <LOGIN> Port 8022 Host uni_bastion1 Hostname bastion1.<domain>.com SSH 13 / 34
36 SSH Advanced Usage: ProxyCommand *.<domain>-intern.com PuTTY / PLink / Pageant (Windows) Session uni_bastion1 - Hostname: bastion1.<domain>.com - Port: Connection/Data: username: <LOGIN> gitlab Session uni_gitlab - Hostname: gitlab.<domain>-intern.com - Port: Connection/Data: username: <LOGIN> - Connection/Proxy: - type: local - Proxy hostname: bastion1.<domain>.com - Port: Username: <LOGIN> - Local proxy command: plink -load uni_bastion1 -nc %host:%port bastion1.<domain>.com OpenSSH ~/.ssh/config (Mac / Linux) Host uni_* User <LOGIN> Port 8022 Host uni_bastion1 Hostname bastion1.<domain>.com Host uni_gitlab Hostname gitlab ProxyCommand ssh -q uni_bastion1 "nc %h %p" SSH + ProxyCommand + netcat 13 / 34
37 SSH Advanced Usage: ProxyCommand *.<domain>-intern.com PuTTY / PLink / Pageant (Windows) Session uni_bastion1 - Hostname: bastion1.<domain>.com - Port: Connection/Data: username: <LOGIN> gitlab Session uni_gitlab - Hostname: gitlab.<domain>-intern.com - Port: Connection/Data: username: <LOGIN> - Connection/Proxy: - type: local - Proxy hostname: bastion1.<domain>.com - Port: Username: <LOGIN> - Local proxy command: plink -load uni_bastion1 -nc %host:%port bastion1.<domain>.com OpenSSH ~/.ssh/config (Mac / Linux) Host uni_* User <LOGIN> Port 8022 Host uni_bastion1 Hostname bastion1.<domain>.com Host uni_gitlab Hostname gitlab ProxyCommand ssh -q uni_bastion1 "nc %h %p" SSH + ProxyCommand + netcat 13 / 34
38 SSH Advanced Usage: ProxyCommand *.<domain>-intern.com PuTTY / PLink / Pageant (Windows) Session uni_bastion1 - Hostname: bastion1.<domain>.com - Port: Connection/Data: username: <LOGIN> gitlab Session uni_gitlab - Hostname: gitlab.<domain>-intern.com - Port: Connection/Data: username: <LOGIN> - Connection/Proxy: - type: local - Proxy hostname: bastion1.<domain>.com - Port: Username: <LOGIN> - Local proxy command: plink -load uni_bastion1 -nc %host:%port bastion1.<domain>.com OpenSSH ~/.ssh/config (Mac / Linux) Host uni_* User <LOGIN> Port 8022 Host uni_bastion1 Hostname bastion1.<domain>.com Host uni_gitlab Hostname gitlab ProxyCommand ssh -q uni_bastion1 "nc %h %p" SSH + ProxyCommand + netcat 13 / 34
39 SSH in Practice ~/.ssh/config $> ssh [-X] [-p <port>] # Example: ssh -p 8022 Host <shortname> Port <port> User <login> Hostname <hostname> ~/.ssh/config: Simpler commands Bash completion $> ssh cha<tab> 14 / 34
40 SSH in Practice ~/.ssh/config $> ssh [-X] [-p <port>] # Example: ssh -p 8022 Host *.ext_ul ProxyCommand ssh -q chaos-cluster \ "nc -q 0 %h %p" # UL HPC Platform -- Host chaos-cluster Hostname access-chaos.uni.lu Host gaia-cluster Hostname access-gaia.uni.lu Host iris-cluster Hostname access-iris.uni.lu Host *-cluster User login #ADAPT accordingly Port 8022 ForwardAgent no Host <shortname> Port <port> User <login> Hostname <hostname> ~/.ssh/config: Simpler commands Bash completion $> ssh cha<tab> 14 / 34
41 SSH in Practice ~/.ssh/config $> ssh [-X] [-p <port>] # Example: ssh -p 8022 Host *.ext_ul ProxyCommand ssh -q chaos-cluster \ "nc -q 0 %h %p" # UL HPC Platform -- Host chaos-cluster Hostname access-chaos.uni.lu Host gaia-cluster Hostname access-gaia.uni.lu Host iris-cluster Hostname access-iris.uni.lu Host *-cluster User login #ADAPT accordingly Port 8022 ForwardAgent no Host <shortname> Port <port> User <login> Hostname <hostname> ~/.ssh/config: Simpler commands Bash completion $> ssh cha<tab> $> ssh chaos-cluster $> ssh work $> ssh work.ext_ul 14 / 34
42 SSH in Practice: Main CLI commands 15 / 34
43 DSH - Distributed / DancerâĂŹs Shell SSH wrapper that allows to run commands over multiple machines. Linux / Mac OS only $> { apt-get yum brew } install dsh # Installation 16 / 34
44 DSH - Distributed / DancerâĂŹs Shell SSH wrapper that allows to run commands over multiple machines. Linux / Mac OS only $> { apt-get yum brew } install dsh # Installation Configuration: in ~/.dsh/ ~/.dsh/dsh.conf: main configuration file ~/.dsh/machines.list: list of all nodes ~/.dsh/group/: holds group definition <name> Group definition: ~/.dsh/group/<name>: simply list SSH shortnames (one name by line) Bash completion file for DSH: 16 / 34
45 DSH configuration ~/.dsh/dsh.conf ############################################################ # ~/.dsh/dsh.conf # Configuration file for dsh (Distributed / Dancer s Shell). # man dsh.conf for details ############################################################ verbose = 0 remoteshell = ssh showmachinenames = 1 # Specify 1 to make the shell wait for each individual invocation. # See -c and -w option for dsh(1) waitshell = 0 # whether to wait for execution # Number of parallel connection to create at the same time. #forklimit=8 remoteshellopt = -q 17 / 34
46 DSH Basic Usage $> dsh [-c -w] { -a -g <group> -m <hostname> } <command> Option Description -c run the commands in parallel (default) -w run the commands in sequential -a run the command on all nodes listed in machines.list -g <group> restrict the commands to the hosts group <group> -m <hostname> run the command only on hostname FAQ: sudo: sorry, you must have a tty to run sudo requires to change the default configuration of sudo Ex: to not requiring a tty to launch a sudo command Defaults:<login>!requiretty 18 / 34
47 UL HPC Tutorial: Getting Started Summary 1 Introduction 2 SSH Secure Shell 3 UL HPC Tutorial: Getting Started Step by step program of this practical session 4 Hands-On: Getting Started on ULHPC 19 / 34
48 UL HPC Tutorial: Getting Started Reference Tutorial Source Tutorial Page: 20 / 34
![GbE [Redundant] Load balancer Site router](/docs-images/78/77065871/images/49-6.jpg "[Redundant] Site access server(s) [Redundant]")
49 UL HPC Tutorial: Getting Started Platform overview. Quick presentation of UL HPC platform and the new Iris cluster as of 2017: TFlops, TB (shared) For more details: Site <sitename> Other Clusters network Local Institution Network 10/40 GbE QSFP+ 10 GbE [Redundant] Load balancer Site router [Redundant] Site access server(s) [Redundant] Adminfront(s) OAR Puppet Kadeploy supervision Slurm etc... GPFS / Lustre Fast local interconnect (Infiniband EDR) 100 Gb/s Site Computing Nodes Disk Enclosures Site Shared Storage Area 21 / 34
50 UL HPC Tutorial: Getting Started First connection & SSH setup Obj: Connecting for the 1st time & preparing your SSH environment Step 1a: Connect to UL HPC (Linux / Mac OS / Unix) Step 1b: Connect to UL HPC (Windows) using MobaXTerm or Putty. Step 2: Connect from one cluster to the other Learn how to connect from one cluster to the other. Step 2bis: Using SSH proxycommand to access the clusters allow access from everywhere despite port filtering use of SSH aliases to easier connection Step 3: Transferring data files from your laptop to the clusters cover both Linux / Mac and Windows users 22 / 34
51 UL HPC Tutorial: Getting Started First connection & SSH setup Step 3a:Transferring data files on Linux / OS X / Unix use command line tools (SCP, Rsync) Step 3b: Windows / Linux / OS X / Unix GUI tools Learn how to configure Filezilla a graphical tool to transfer files to/from the clusters. Step 3c: Windows [MobaXterm] file transfert 23 / 34
52 UL HPC Tutorial: Getting Started Discovering & reserving HPC resources Obj: How to reserve resources & use them to run your code on it? Step 1: the working environment What software is installed on the nodes where can I put my files, my data, my results? How many space is available? Step 2: web monitoring interfaces What is the status of the platform? How many ressources are available and when? Why is my job in pending state? 24 / 34
53 UL HPC Tutorial: Getting Started Discovering & reserving HPC resources Step 3a: Reserving resources with Slurm Now I want to run my script on the platform. What should I do? How to use Slurm scheduler on iris cluster? Step 3b: Reserving resources with OAR As above, yet using the OAR scheduler available on gaia, chaos, g5k clusters? 25 / 34
54 UL HPC Tutorial: Getting Started Discovering & reserving HPC resources Step 4: Using modules I want to run a specific version of my software. What software is available? How can I use them? Step 5 (advanced): Job management and Persistent Terminal Sessions using GNU Screen Each time I close my SSH connection, my job is killed. How can I make persistent terminal sessions... to execute my code wthout disconnections. Pre-requisite: screen configuration file ~/.screenrc Basic commands Sample Usage on the UL HPC platform: Kernel compilation 26 / 34
55 Hands-On: Getting Started on ULHPC Summary 1 Introduction 2 SSH Secure Shell 3 UL HPC Tutorial: Getting Started Step by step program of this practical session 4 Hands-On: Getting Started on ULHPC 27 / 34
56 Hands-On: Getting Started on ULHPC Hands-On 1: SSH Setup Your Turn! Generating you SSH Key pair Connect to UL HPC (Linux / Mac OS / Unix / Windows) Connect from your laptop/workstation to UL HPC access Connect from one cluster to the other Transferring files 28 / 34
57 Hands-On: Getting Started on ULHPC Hands-on 2: First steps on UL HPC Debian 8 (chaos/gaia) CentOS 7 (iris) module avail module load./a.out mpirun rsync ssh access Computing Nodes icc Internet oarsub [-I] srun / sbatch UL HPC Environment Computing Nodes GPU Operating System: Debian 7 on gaia, chaos $HOME $WORK $SCRATCH SpectrumScale/GPFS Lustre (gaia only) CentOS 7 on iris Job Management: { oarsub srun/sbatch } Environment modules: modules Not available on frontends, *Only* on compute nodes (advanced) discovering GNU screen ssh rsync Infiniband [Q E]DR nvcc Directory Max size Max #files Backup $HOME (gaia, chaos) 100 GB YES $HOME (iris) 500 GB YES $WORK (except iris) 3 TB NO $SCRATCH (except iris) 10 TB NO 29 / 34
58 Hands-On: Getting Started on ULHPC ULHPC Web monitoring interfaces 30 / 34
59 Hands-On: Getting Started on ULHPC ULHPC Web monitoring interfaces 30 / 34
60 Hands-On: Getting Started on ULHPC ULHPC Web monitoring interfaces 30 / 34
61 Hands-On: Getting Started on ULHPC ULHPC Web monitoring interfaces 30 / 34
62 Hands-On: Getting Started on ULHPC ULHPC Web monitoring interfaces 31 / 34
63 Hands-On: Getting Started on ULHPC Job management If there are not enough resources available, use our reservations, add the parameters in red to your submission commands: OAR (Gaia) $> oarsub -I -t inner= SLURM (Iris) $> srun reservation=hpcschool pty bash 32 / 34
64 Hands-On: Getting Started on ULHPC Programming, quick start choose a command line text editor load modules run a Matlab script run a R script use the available compilers compile and run a simple MPI program 33 / 34
65 Thank you for your attention... Questions? High Performance UL Prof. Pascal Bouvry Dr. Sebastien Varrette & the UL HPC Team (V. Plugaru, S. Peter, H. Cartiaux & C. Parisot) University of Luxembourg, Belval Campus Maison du Nombre, 4th floor 2, avenue de l Université L-4365 Esch-sur-Alzette mail: hpc@uni.lu 1 Introduction 2 SSH Secure Shell 3 UL HPC Tutorial: Getting Started Step by step program of this practical session 4 Hands-On: Getting Started on ULHPC 34 / 34
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