Fil des news

A S92 chassis burn its power supply unit, making the main power unit to trip.

S92node[01-04,09-12] went down, including jobs…

• login nodes (for debian11 tests and builds)
  • x5570comp[1-2] (→ minimum build tune: -mtune=generic -O2 -msse4a)
  • E5 partition: c82gluster1
  • Lake partition: c6420node171
  • Cascade partition: s92node01

• We had to give back epycomp1 (epyc login node)

Use sinfo and squeue to see what resources are available. Use web forms for slurm access

A power distribution unit went down this afternoon, on Lake cluster. Some jobs have crashed. Sorry.

Hi all,

We have a Massive Upgrade coming this spring!

• From debian 9 to debian 11
  • to support both new hardwares and new softwares
  • new cluster with new upgrades already available (Cascade)
  • every binary must be rebuild
  • new ways of sharing programs
  • new ways of installations

  Use the web forms when software are missing. We will find the most suitable way for installation(s).

• See below new documentation about R, Python, Perl…

• From SGE to Slurm
  • GridEngine have served us well for years, but it can't keep up as we continue to grow (over 30k cores this year),
  • We choose slurm because it is used on national and international centers
  • better reservation, cleaner exit
  • New examples scripts : https://github.com/ltaulell/submission_scripts
  • Slurm offer more freedom and more responsabilities!

• New documentation
  • https://meso-centres-lyon.pages.in2p3.fr/psmn-rtd/index.html
  • New enforced rules around filesystems and storage
  • Follow rules for a smooth PSMN use

• We will have to physically re-organize clusters (E5 and Cascade), to double Cascade, and halve E5.

• We will propose meetings and courses to ease the transition, group by groups

• Cons:
  • all scratchs will have to be destroyed (we go from v3 to v8, data will not be readable, we must restart from zero)
  • E5 and Cascade will have to be turned off for weeks (2 to 4)

• Timeline: ASAP! We want to migrate as fast as possible (endline first of june 2022)
  • See http://www.ens-lyon.fr/PSMN/doku.php?id=news:blog and http://www.ens-lyon.fr/PSMN/doku.php?id=news:evolutions for more updated informations

We are experiencing large network problems, origin unknown. Everything is slow or not responding.

EDIT 12:20: things “seems” to be back to normal. Origin still uncertain.