Status of the HLRN

Current system status

  Lise Emmy
Status Online Online
Next Steps - Benchmarks mid October

E-mail news, overview

17.09.2020 Göttingen: Emmy open again

the downtime of the phase 1 in Göttingen is now completed and the Emmy system is now available again. During this downtime, we did some improvements of the WORK file system, which increase the performance by ~25%. Please keep in mind that the system will be closed in three weeks for benchmarks of the combined phase 1 and 2 system. We will update you on the exact dates as soon as possible.

13.09.2020 Berlin: filesystem issues solved

The file system problems have been resolved, WORK and therefore Lise is available again.

04.09.2020 Emmy Downtime

as previously announced there will be a downtime from Sep 10 2020 at 08:00 until Sep 17 2020. This is needed to prepare and fine tune the OPA network for the phase two of the Emmy system.

All systems, including the login nodes, will be unavailable during this period. Please transfer any data you may need during that time beforehand.

Furthermore, there will be a downtime from Oct 11 2020 to Oct 17 2020 to benchmark the whole system.

Schedule for HLRN-IV installation

The HLRN-IV complex “Lise” in Berlin is open for general access since February 5th 2020.
For the complete system of the HLRN-IV complex “Emmy” in Göttingen the installation process continues.

An overview of the schedule for the availability of compute resources in Berlin and Göttingen follow in the table below.

Month June '20 July '20 August '20 September '20 October '20 November '20
CW 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48
HLRN Service Berlin
HLRN Service Göttingen P1 P1 P1 P1 P1 P1 P1 P1 P1 P1 ST ST ST ST


Color coding: Compute resources available
NO resources available
ST Stability Test phase of the HLRN-IV phase 2, limited access for power users (early adopters) possible
P1 Compute service with nodes from phase 1 only
Begin Acceptance Test of HLRN-IV phase 2


Dates for complex “Emmy” in Göttingen

Below are the time schedules for phase 2 installation in Göttingen. Please note that, in particular, the down-time period (unavailability) of HLRN-IV phase 1 resources is pessimistically estimated.

  1. In Göttingen, there will be no need to transfer data from HLRN-IV phase 1 to phase 2 since the current HOME and WORK will be part of the full HLRN-IV system.
  2. Interruption of HLRN phase 1 services in Göttingen:
    • CW27/2020 – CW34/2020 (01.07.2020 – 24.08.2020): Relocation of phase 1 to new data center
    • CW37/2020 (09.09.2020 – 15.09.2020): OPA setup for startup of phase 2
    • CW42/2020 (11.10.2020 – 17.10.2020): Full system benchmarks

  3. Past activities, already finished:
    • CW07/2020 (10.02.2020 – 14.02.2020): System maintenance
    • CW24/2020 (08.06.2020 – 09-06.2020): Storage maintenance

If you plan to use the HLRN resources in Berlin during the service breaks in Göttingen you have to copy data your from Göttingen to Lise in Berlin. During the service break there will be no access to data stored in Göttingen, so it is important that you copy all data you need during this period to Lise in Berlin or personal storage not later than June 30th 2020.

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