Difference between revisions of "Grid5000"

Revision as of 14:29, 4 April 2011

https://www.grid5000.fr/mediawiki/index.php/Grid5000:Home

Login, job submission, deployment of image

• Select sites and clusters for experiments, using information on the Grid5000 network and the Status page
• Access is provided via access nodes access.SITE.grid5000.fr marked here as accessible from everywhere via ssh with keyboard-interactive authentication method. As soon as you are on one of the sites, you can directly ssh frontend node of any other site:

access_$ ssh frontend.SITE2

• There is no access to Internet from computing nodes (external IPs should be registered on proxy), therefore, download/update your stuff at the access nodes. Several revision control clients are available.
• Each site has a separate NFS, therefore, to run an application on several sites at once, you need to copy it scp, sftp, rsync between access or frontend nodes.
• Jobs are run from the frondend nodes, using a PBS-like system OAR. Basic commands:
  • oarstat - queue status
  • oarsub - job submission
  • oardel - job removal

fontend_$ oarsub -I -t deploy -l [/cluster=N/]nodes=N,walltime=HH[:MM[:SS]] [-p 'PROPERTY="VALUE"']

fontend_$ oarsub BATCH_FILE -t allow_classic_ssh -l [/cluster=N/]nodes=N,walltime=HH[:MM[:SS]] [-p 'PROPERTY="VALUE"']

• The image to deploy can be created and loaded with help of a Systemimager-like system Kadeploy. Creating: described here

fontend_$ kadeploy3 -a PATH_TO_PRIVATE_IMAGE_DESC -f $OAR_FILE_NODES

Compiling and running MPI applications

• Compilation should be done on one of the reserved nodes (e.g. ssh `head -n 1 $OAR_NODEFILE`)
• Running MPI applications is described here
  • mpirun/mpiexec should be run from one of the reserved nodes (e.g. ssh `head -n 1 $OAR_NODEFILE`)

Setting up new deploy image

oarsub -I -t deploy -l nodes=1,walltime=12
kadeploy3 -e lenny-x64-big -f $OAR_FILE_NODES -k
ssh root@`head -n 1 $OAR_NODEFILE`

edit /etc/apt/sources.list

apt-get update
apt-get upgrade

apt-get install libtool mc colorgcc ctags libboost-serialization-dev libboost-graph-dev libatlas-base-dev

Other packages used but already included in lenny-big

autoconf automake  vim  libboost-serialization-dev gdb valgrind screen 

Packages also used, compiled from sources by grid5000

mpich2 libmpich2-dev openmpi-bin openmpi-dev

Compiled for sources by us:

gsl-1.14

Cleanup

apt-get clean
rm /etc/udev/rules.d/*-persistent-net.rules

Make image

ssh root@node tgz-g5k > ../grid5000/imagename.tgz