HLRN System - News Archive

Last update: 07 April 2017, 17:20


IDPublished Subject
[3098] Apr 07, 2017Apply for Computing Time by April 28th, 2017
[3086] Feb 15, 2017System Hannover open again
[3082] Feb 15, 2017Lustre problems in Hannover - system closed for user access
[3075] Jan 10, 2017Apply for Computing Time by January 28th, 2017
[3073] Dec 29, 2016Solved - Lustre problems in Hannover
[3071] Dec 29, 2016Lustre problems in Hannover - system closed for user access
[3069] Dec 23, 2016System crash at HLRN Hannover
[3067] Dec 02, 201612th BremHLR-Workshop on "Parallel Programming with MPI and OpenMP"
[3065] Nov 21, 2016Archive Maintenance in Hannover
[3063] Nov 16, 2016Finished: Maintenance in Hannover
[3049] Oct 10, 2016Apply for Computing Time by October 28th, 2016
[3046] Aug 25, 2016Maintenance in Hannover - finished
[3044] Aug 24, 2016Maintenance in Hannover - finished on MPP/XC30
[3042] Aug 24, 2016Berlin: Maintenance day at ZIB on August 30, 2016
[3041] Aug 22, 2016KNL Parallel Programming Workshop at ZIB, Sept. 26-27, 2016
[3038] Aug 18, 2016Maintenance in Hannover
[3035] Aug 08, 2016Update - MPP problem in Hannover
[3033] Aug 08, 2016MPP problem in Hannover
[3030] Jul 12, 2016Stellenausschreibung an der TU Braunschweig, Gauß-IT-Zentrum
[3029] Jul 08, 2016Apply for Computing Time by July 28th, 2016
[3024] Jun 30, 2016Hannover: MPP with reduced computing capacity on July 6 + 7th
[3019] Jun 27, 2016Hannover: Archive system maintenance Tue June 28, 2016 09:00
[3018] Jun 17, 2016Newsletter: Nineteenth edition of HLRN Informationen published
[3014] Jun 01, 2016Berlin: Maintenance on June 7-9, 2016
[3012] Jun 01, 2016Important change of SSH authentication policy
[3000] May 13, 2016Finished: maintenance at HLRN Hannover
[2987] Apr 28, 2016Stellenausschreibung am Zuse-Institut Berlin
[2986] Apr 27, 2016BremHLR/HLRN Workshop OpenFOAM Tuning am 26.5.2016
[2984] Apr 25, 2016Umweltphysiker Professor John P. Burrows von der Uni Bremen erhält Alfred Wegener Medaille
[2983] Apr 15, 2016Stellenausschreibung ForWind/Universität Oldenburg
[2980] Apr 08, 2016Apply for Computing Time by April 28th, 2016
[2976] Mar 29, 2016Solved - Lustre problems in Hannover
[2974] Mar 29, 2016Lustre problems in Hannover - system closed for user access
[2970] Mar 15, 2016Hannover: PERM is available again
[2966] Feb 25, 2016Hannover: XC30 ready again
[2965] Feb 25, 2016XC30 crashed in Hannover
[2962] Feb 22, 2016Berlin: Konrad in production again
[2959] Feb 19, 2016Finished: Maintenance in Hannover
[2958] Feb 18, 2016Berlin: Maintenance of Konrad on February 22, 2016
[2955] Feb 18, 2016Hannover: Maintenance on Friday, Feb. 19
[2953] Feb 17, 2016Hannover: re-enabling quotas on work file systems
[2943] Feb 03, 2016Hannover: Maintenance finished
[2940] Jan 14, 2016Hannover: Maintenance on February 2 and 3, 2016
[2935] Jan 08, 2016HLRN Hannover: MPP1 and MPP2 open again
[2932] Jan 08, 2016Hannover: MPP1 and MPP2 closed
[2929] Jan 07, 2016Apply for Computing Time by January 28th, 2016


Apply for Computing Time by April 28th, 2017
[3098] Apr 07, 2017

The Scientific Board of the HLRN is inviting project proposals applying for computing time on the HLRN system.

The next deadline is April 28th, 2017, at 23:59.

Projects that need more computing time than 10,000 NPL resource units per quarter are invited to submit a project proposal ("Großprojektantrag") to the Scientific Board ("Wissenschaftlicher Ausschuss") of HLRN for the next quarterly review. Resources are allocated for one year starting July 1st, 2017, on a quarterly basis after review of the proposal (see the Application HowTo and the Scientific Board portal page). In 2017 HLRN allocates about 130 million core hours per quarter (equivalent to about 42 million NPL per year) to successful proposals.

Please note: The project abstract has to be created in a certain format. The appropriate HLRN LaTeX template can be downloaded from the HLRN web page "required documents". The use of this template is required.

In case of questions, please contact your local HLRN support person or your HLRN project consultant before submitting the proposal.

(wwb)



System Hannover open again
[3086] Feb 15, 2017

The remainder of the queues now are open again as well.

As always, please let us know in case you notice anything unusual.


Happy computing & sorry about the interruption,

GG


The original message was:
-------------------------
SMP, hdata and hpost still need some work and will be reopened later.




Lustre problems in Hannover - system closed for user access
[3082] Feb 15, 2017

Due to a Lustre ($WORK1) problem the HLRN complex in Hannover
is closed for user access.

We will post a message as soon as the problem is solved and the
system is open again for user access.

We apologise for the inconvenience.

(HS)


Apply for Computing Time by January 28th, 2017
[3075] Jan 10, 2017

The Scientific Board of the HLRN is inviting project proposals applying for computing time on the HLRN system.

The next deadline is January 28th, 2017, at 23:59.

Projects that need more computing time than 10,000 NPL resource units per quarter are invited to submit a project proposal ("Großprojektantrag") to the Scientific Board ("Wissenschaftlicher Ausschuss") of HLRN for the next quarterly review. Resources are allocated for one year starting April 1st, 2017, on a quarterly basis after review of the proposal (see the Application HowTo and the Scientific Board portal page). In 2017 HLRN allocates about 130 million core hours per quarter (equivalent to about 42 million NPL per year) to successful proposals.

Please note: The project abstract has to be created in a certain format. The appropriate HLRN LaTeX template can be downloaded from the HLRN web page "required documents". The use of this template is required.

In case of questions, please contact your local HLRN support person or your HLRN project consultant before submitting the proposal.

(wwb)



Solved - Lustre problems in Hannover
[3073] Dec 29, 2016

The HLRN complex in Hannover is available again.

Thank you for your patience,

Your HLRN team

(HS)


Lustre problems in Hannover - system closed for user access
[3071] Dec 29, 2016

Due to a Lustre ($WORK2) problem the HLRN complex in Hannover
is closed for user access.

We will post a message when the problem is solved and the system
is open again for user access.

We apologise for the inconvenience.

(HS)


System crash at HLRN Hannover
[3069] Dec 23, 2016

Due to a system failure the MPP in Hannover had to be rebooted.
The SMP system was not effected.

Please let us know if you need a NPL refund.

All system are now up and running.

We are sorry for the inconvenience.

Your HLRN Team

(HS)


12th BremHLR-Workshop on "Parallel Programming with MPI and OpenMP"
[3067] Dec 02, 2016

The Bremen Supercomputing Competence Center BremHLR organizes the
    12th BremHLR-Workshop on "Parallel Programming with MPI and OpenMP"
from January 9 to 13, 2017 at the Jacobs University Bremen.

Workshop Contents:
This workshop introduces to parallel programming. The main focus is on the parallel programming models MPI and OpenMP. During the workshop, lectures will introduce the concepts and use of the parallel programming while tutorial exercises allow the participants to get practical experience with MPI and OpenMP.

Lecturers:
The workshop is given by Dr. Hinnerk Stüben (University of Hamburg) and Dr. Lars Nerger (BremHLR and Alfred Wegener Institute, Bremerhaven).

Prerequisites:
Solid fundamentals in Unix as well as C or Fortran will be essential!

Registration:
Please register by email to bremhlr@uni-bremen.de

Registration deadline:
December 27, 2016

Fees:
None – the workshop is for free!

Please find the details about the workshop online at
http://www.bremhlr.uni-bremen.de/events/mpi-openmp-workshop/ .

Kind regards,
Lars Nerger (Alfred Wegener Institute & BremHLR)
Thorsten Coordes (ZARM, University of Bremen)
Achim Gelessus (CLAMV, Jacobs University Bremen)



Archive Maintenance in Hannover
[3065] Nov 21, 2016

The archive component at HLRN Hannover has scheduled maintenance on Wednesday Nov. 23rd afternoon starting 14:30. Sessions on the two interface servers hperm1 and hperm2 will terminate by that time.

After the maintenance, only hperm1 will become available due to a system upgrade of several components.

HLRN Berlin and the rest of the system in Hannover are not affected.

Your HLRN Team

(gg)


Finished: Maintenance in Hannover
[3063] Nov 16, 2016

HLRN Hannover is available again.
Thank you for your patience.

Your HLRN Team

(gg)


The original message was:
--------------------------
HLRN Hannover (Gottfried) has scheduled maintenance from
Tuesday, Nov 15, 2016 until Wednesday, Nov 16, 2016. Access
will be closed starting 08:00 a.m. [...]




Apply for Computing Time by October 28th, 2016
[3049] Oct 10, 2016

The Scientific Board of the HLRN is inviting project proposals applying for computing time on the HLRN system.

The next deadline is October 28th, 2016, at 23:59.

Projects that need more computing time than 10,000 NPL resource units per quarter are invited to submit a project proposal ("Großprojektantrag") to the Scientific Board ("Wissenschaftlicher Ausschuss") of HLRN for the next quarterly review. Resources are allocated for one year starting January 1st, 2017, on a quarterly basis after review of the proposal (see the Application HowTo and the Scientific Board portal page). In 2017 HLRN allocates about 130 million core hours per quarter (equivalent to about 42 million NPL per year) to successful proposals.

Please note: The project abstract has to be created in a certain format. The appropriate HLRN LaTeX template can be downloaded from the HLRN web page "required documents". The use of this template is required.

In case of questions, please contact your local HLRN support person or your HLRN project consultant before submitting the proposal.

(wwb)



Maintenance in Hannover - finished
[3046] Aug 25, 2016

the smp, data and post queues are open again.

Your HLRN team
(HS)





Maintenance in Hannover - finished on MPP/XC30
[3044] Aug 24, 2016

Gottfried MPP1 and MPP2 partitions (XC30) are
now ready for use at HLRN Hannover.
Unfortunately, we will need some additional time to
finalize things for partitions hdata, hpost, hsmp and
for hlogin3. We will probably open these tomorrow
in the morning after work is finished.

Please use hlogin1,2 and 4 for your work, you can already submit new jobs to all partitions, but only those in mpp1 and mpp2 will start.

Thank you for your patience and understanding,

Your HLRN team
(GG)


The original message was:
---------------------------
Tuesday, Aug 23, 2016 until Wednesday, Aug 24, 2016. Access
will be closed starting 08:00 a.m. Interactive sessions will
be terminated without further warning.



Berlin: Maintenance day at ZIB on August 30, 2016
[3042] Aug 24, 2016

The annual infrastructure maintenance will be performed at ZIB on Tuesday, August 30, from 7:00 until approximately 20:00. Some HLRN services will be partially or fully unavailable for ALL users during that time.

Our schedule is:
  • At 7:00 shutdown of Konrad. All login sessions will be terminated.
  • Between 8:00 and approx. 16:00:
    • ZIB may be partially or entirely cut off from electric power and from the internet.
    • ZIB personnel can be contacted by phone, only.
    • Email traffic to/from ZIB will be interrupted, but mail will not get lost.
    • The HLRN web server (www.hlrn.de) will be unavailable.
    • The HLRN Service Portal including the user and project database server (zulassung.hlrn.de) will be unavailable.
    • The licence server for the packages ABAQUS, ANSYS, Fluent, and Totalview (all licensed by ZIB) will be unavailable.
  • Approximately 18:00: HLRN services except Konrad are expected to be restored.
  • We expect Konrad to be available again at around 20:00.
The HLRN mail servers will remain available during the maintenance.

Please plan accordingly.

(wwb)



KNL Parallel Programming Workshop at ZIB, Sept. 26-27, 2016
[3041] Aug 22, 2016

The next generation of Intel Xeon Phi processors - code named Knights Landing (KNL) - is available as stand-alone CPU and features up to 72 cores, an increased single-core performance, integration of high-bandwidth memory, and different device partition models.

To take full advantage of the architectural features of today`s KNL and near-future processors, existing codes need to be modernized. Newly developed code should be designed to do so from the beginning.

We invite all HLRN code developers to a 2-day workshop on code optimization for KNL and tomorrow`s multi- and many-core processors.


Agenda and Registration:

Update Sep 23: The Workshop is fully booked; For the workshop agenda please see the workshop website.

(TSt)



Maintenance in Hannover
[3038] Aug 18, 2016

HLRN Hannover (Gottfried) has scheduled maintenance from
Tuesday, Aug 23, 2016 until Wednesday, Aug 24, 2016. Access
will be closed starting 08:00 a.m. Interactive sessions will
be terminated without further warning.

HLRN Berlin is not affected.

We will post a note as soon as Gottfried is online again.

Yours sincerely
HLRN Team

(HS)


Update - MPP problem in Hannover
[3035] Aug 08, 2016

the MPP system in Hannover is working again.

Your HLRN team

(HS)


MPP problem in Hannover
[3033] Aug 08, 2016

due to hardware problems it is not possible to
submit new jobs to the MPP system in Hannover. The
SMP system is not effected.

As soon as the problem is solved we will post a message.

We apologise for the inconvenience.

(HS)



Stellenausschreibung an der TU Braunschweig, Gauß-IT-Zentrum
[3030] Jul 12, 2016

Die Technische Universität Braunschweig sucht für das Gauß-IT-Zentrum zum 01.11.2016 eine Mitarbeiterin oder einen Mitarbeiter für den Bereich High-Performance-Computing (HPC) (Vollzeit, zunächst befristet für 3 Jahre). Die ausführliche Stellenausschreibung finden Sie auf der Website der TU Braunschweig.

(ns/wwb)


Apply for Computing Time by July 28th, 2016
[3029] Jul 08, 2016

The Scientific Board of the HLRN is inviting project proposals applying for computing time on the HLRN system.

The next deadline is July 28th, 2016, at 23:59.

Projects that need more computing time than 10,000 NPL resource units per quarter are invited to submit a project proposal ("Großprojektantrag") to the Scientific Board ("Wissenschaftlicher Ausschuss") of HLRN for the next quarterly review. Resources are allocated for one year starting October 1st, 2016, on a quarterly basis after review of the proposal (see the Application HowTo and the Scientific Board portal page). In 2016 HLRN allocates about 130 million core hours per quarter (equivalent to about 42 million NPL per year) to successful proposals.

Please note: The project abstract has to be created in a certain format. The appropriate HLRN LaTeX template can be downloaded from the HLRN web page "required documents". The use of this template is required.

In case of questions, please contact your local HLRN support person or your HLRN project consultant before submitting the proposal.

(wwb)



Hannover: MPP with reduced computing capacity on July 6 + 7th
[3024] Jun 30, 2016

We had to schedule a maintenance of the HLRN cooling system in Hannover starting Wednesday July 6th 2016 08:00 a.m. Servicing may take up to two days.

This means that computing power will be throttled back to about half the capacity of each MPP partition in Hannover during that time, resulting in prolonged queue wait times (but not run times) particularly for larger jobs. Other than that, the system should continue to run without restrictions.

No additional announcement will be made when the maintenance is finished (use the xtn command to check).

Your HLRN team

(gg)


Hannover: Archive system maintenance Tue June 28, 2016 09:00
[3019] Jun 27, 2016

Hannover will perform maintenance on the archive system component (a.k.a. PERM) starting Tue June 28 2016, 09:00. We expect the maintenance to be finished by 15:00.

No access to hperm1 and hperm2 is possible during that time. Data transfers to the PERM file system will be aborted without warning after 09:00.

Please plan accordingly.

Your HLRN team

(gg)


Newsletter: Nineteenth edition of HLRN Informationen published
[3018] Jun 17, 2016

The nineteenth edition of the HLRN newsletter HLRN Informationen (in German) is available for download at
https://www.hlrn.de/home/view/NewsCenter/NewsLetter.
This web page also contains instructions for (un-)subscribing to the newsletter mailing list.

From the content:
  • Wissenschaftsrat gibt grünes Licht für HLRN-IV
  • Projektbericht "Hochauftrieb künftiger Verkehrsflugzeuge - Strukturentwurf und Aeroelastik"
  • Nur noch SSH-Schlüssel für den HLRN-Zugang
  • Nächste Generation von Intel Xeon Phi Prozessoren am ZIB
  • Das HLRN Service-Portal wird bilingual
(wwb)


Berlin: Maintenance on June 7-9, 2016
[3014] Jun 01, 2016

An extensive system maintenance has been scheduled on the Berlin complex Konrad

from Tuesday, June 7, 7:00,
until Thursday, June 9, 2016, late afternoon.

All components of Konrad will be unavailable during this time. All login sessions will be terminated, and the batch system will be stopped.

During the maintenance most of the system components will receive software and firmware updates and upgrades to further improve stability and to fix a number of open issues.

(wwb)


Important change of SSH authentication policy
[3012] Jun 01, 2016

This affects all HLRN Users.

A new SSH authentication policy will take effect on

Tuesday, June 14, 10:00.

Authentication will be handled only by Secure Shell keys after that point in time, and passwords can no longer be used for that purpose. At the same time you will be able to access HLRN via SSH from any host without restriction. Registration of access hosts will not be necessary anymore.

From June 14 on you will have to generate a Secure Shell key pair and upload the public key to HLRN via the Service Portal at https://zulassung.hlrn.de/, under item "Verwalten Ihrer Keys" / "Manage keys". You will need your HLRN password for uploading a key. Uploading is not possible before June 14.

Generation of keys and key usage is described in our topic on Pubkey Login:
https://www.hlrn.de/home/view/System3/PubkeyLogin .

In preparation for this switch the HLRN Service Portal https://zulassung.hlrn.de/ will be inaccessible on

Monday, June 13.

If have questions or encounter problems, please contact your HLRN consultant.

(stf/stb/wwb)



Finished: maintenance at HLRN Hannover
[3000] May 13, 2016

Maintenance for complex Hannover is finished, system is ready for use again.

To those who reported having quota problems on Lustre/WORK (number of files was wrong in lfs quota): we believe this to be solved, please check.

Thank you for your patience,

Your HLRN team

(gg)


The original message was:
---------------------------
HLRN Hannover (Gottfried) has scheduled maintenance
for Thursday, Mai 19, 2016. Access will close
at 09:00 a.m. Interactive sessions will be terminated
without further warning.

HLRN Berlin is not affected.




Stellenausschreibung am Zuse-Institut Berlin
[2987] Apr 28, 2016

Das Zuse-Institut Berlin (ZIB) sucht für die Abteilung Verteilte Algorithmen und Supercomputing zur Unterstützung von Dienstleistungs- und Entwicklungsarbeiten zum nächstmöglichen Zeitpunkt einen

  Wissenschaftlichen Angestellten (w/m, 100%)
  Bewerbungsfristende: 30.05.2016.

Die Aufgaben umfassen die Erstellung und Optimierung von Software für den Betrieb des HLRN Supercomputers und neuer Technologieplattformen, die Unterstützung der systemtechnischen Betreuung der Supercomputer und die Sicherstellung der IT-Sicherheit.

Einzelheiten zu der Stellenausschreibung finden Sie unter: http://www.zib.de/node/2414.

(ts/wwb)




BremHLR/HLRN Workshop OpenFOAM Tuning am 26.5.2016
[2986] Apr 27, 2016

Einladung an alle HLRN/OpenFOAM Nutzer

Am 26.5.2016 von 10:00h-16:00h findet am ZARM (Fallturm Bremen) ein BremHLR / HLRN OpenFOAM Tuning Workshop statt. Zusammen mit Stephen Sachs von CRAY sollen Optimierungsmöglichkeiten von OpenFOAM auf dem HLRN direkt an eigenen Projekten realisiert werden.

Ziel dieses Workshops ist die Identifikation und Beseitigung von Bottlenecks in individuellen OpenFOAM Installationen und spezifische Anpassungen für das parallele Filesystem am HLRN.

Die interessierten Teilnehmer sollen kurz ihre OpenFOAM Projekte am HLRN oder auf lokalen Installationen bzgl. benötigter Ressourcen vorstellen. Zur besseren Vorbereitung des Workshops auf die individuellen Projekte kann man sein Projekt vorab auf einer Webseite beschreiben (verwendeter Compiler und Version, OpenFOAM Version, Anzahl Zellen, verwenderter Solver, kurze Problembeschreibung). Die Webseite ist mit einem Passwort versehen, was per Email bei bremhlr@uni-bremen.de erfragt werden kann.

Wer Interesse hat, meldet sich bitte bis zum 18. Mai 2016 per Email bei bremhlr@uni-bremen.de an.

Workshop-Daten:
Zeit: 26.5.2016 10:00h-16:00h
Ort: ZARM, Bremen, Raum 1280

Mit freundlichen Grüßen,

Thorsten Coordes, Stephen Sachs

(tc/wwb)



Umweltphysiker Professor John P. Burrows von der Uni Bremen erhält Alfred Wegener Medaille
[2984] Apr 25, 2016

Professor John P. Burrows vom Institut für Umweltphysik / Institut für Fernerkundung der Universität Bremen wurde am 20. April 2016, während der Generalversammlung der European Geosciences Union (EGU) in Wien, die Alfred Wegener Medaille verliehen. Verbunden damit ist die lebenslange Ehrenmitgliedschaft der bedeutenden geowissenschaftlichen Gesellschaft.

Professor Burrows, der an der Universität Bremen die Abteilung für Atmosphärenphysik und Atmosphärenchemie leitet, ist in der weltweiten Wissenschaftsgemeinde für seine Beiträge zur Entwicklung und Anwendung von neuen Sensoren auf Satelliten bekannt. Sie dienen der Fernerkundung der Zusammensetzung der Erdatmosphäre. Die Messungen mit dieser Art von Geräten haben zu wichtigen Fortschritten im Verständnis der Chemie und der Dynamik der Atmosphäre und zu den Ursachen der Luftverschmutzung geführt. Die rechenaufwendige Auswertung und Aufbereitung der Satellitendaten erfolgt unter der Leitung von Professor Burrows auch im Rahmen von Grossprojekten auf den Rechnern des HLRN-Verbundes.

Weitere Informationen finden Sie unter
http://www.iup.uni-bremen.de/deu/
http://www.egu.eu/awards-medals/alfred-wegener/2016/john-p-burrows/

(wwb)



Stellenausschreibung ForWind/Universität Oldenburg
[2983] Apr 15, 2016

Als Nutzer des HLRN-Systems möchten wir Sie und andere möglicherweise Interessierte auf die folgende Stellenausschreibung aufmerksam machen.

ForWind, das Zentrum für Windenergieforschung der Universitäten Oldenburg, Hannover und Bremen, sucht zum nächstmöglichen Zeitpunkt

eine/n wissenschaftliche/n Mitarbeiter/in

für numerisches Rechnen.

Im Rahmen dieses Projektes wird ein neuer Hochleistungsrechencluster (HPC) mit ca. 3000 CPU-Kernen angeschafft, um leistungsfähige Berechnungen zur numerischen Strömungssimulation für die Windenergie durchführen zu können.

Nähere Einzelheiten zu der Stellenausschreibung finden Sie unter:
http://www.forwind.de/forwind/index.php?article_id=493&clang=0 .


(sh,wwb)



Apply for Computing Time by April 28th, 2016
[2980] Apr 08, 2016

The Scientific Board of the HLRN is inviting project proposals applying for computing time on the HLRN system.

The next deadline is April 28th, 2016, at 23:59.

Projects that need more computing time than 10,000 NPL resource units per quarter are invited to submit a project proposal ("Großprojektantrag") to the Scientific Board ("Wissenschaftlicher Ausschuss") of HLRN for the next quarterly review. Resources are allocated for one year starting July 1st, 2016, on a quarterly basis after review of the proposal (see the Application HowTo and the Scientific Board portal page). In 2016 HLRN allocates about 130 million core hours per quarter (equivalent to about 42 million NPL per year) to successful proposals.

Please note: The project abstract has to be created in a certain format. The appropriate HLRN LaTeX template can be downloaded from the HLRN web page "required documents". The use of this template is required.

In case of questions, please contact your local HLRN support person or your HLRN project consultant before submitting the proposal.

(wwb)



Solved - Lustre problems in Hannover
[2976] Mar 29, 2016

The HLRN complex in Hannover is available again.

Thank you for your patience,

Your HLRN team

(HS)


Lustre problems in Hannover - system closed for user access
[2974] Mar 29, 2016

Due to a Lustre ($WORK) problem the HLRN complex in Hannover
is closed for user access.

We will post a message when the problem is solved and the system
is open again for user access.

We apologise for the inconvenience.

(HS)


Hannover: PERM is available again
[2970] Mar 15, 2016

The archive system (PERM) in Hannover is available again.

Thank you for your patience.

(HS)



Hannover: XC30 ready again
[2966] Feb 25, 2016

The XC30 is ready for use again. We will refund jobs that were running on the mpp at the time of the crash. You do not need to contact HLRN for this except if you think something is still missing after Tuesday next week.

Just for clarity: the crash affected only the XC30.


Your HLRN team
(gg)



The original message was:
-------------------------
Due to a problem with a defective optical link cable,
several cabinets of the XC30 in Hannover just have
crashed and the whole machine will need an immediate
reboot. We will see in what state it will come back up.

Jobs that were running at about 15:08 on the Cray will
almost certainly already have crashed and will therefore
automatically be reimbursed by HLRN. We are very sorry
for the inconvenience.


XC30 crashed in Hannover
[2965] Feb 25, 2016

Due to a problem with a defective optical link cable,
several cabinets of the XC30 in Hannover just have
crashed and the whole machine will need an immediate
reboot. We will see in what state it will come back up.

Jobs that were running at about 15:08 on the Cray will
almost certainly already have crashed and will therefore
automatically be reimbursed by HLRN. We are very sorry
for the inconvenience.

Your HLRN Team

(gg)



Berlin: Konrad in production again
[2962] Feb 22, 2016
The maintenance is successfully finished, the system is in production
again.

We installed an important security update which required a complete
reboot of the system.

(gla)


Finished: Maintenance in Hannover
[2959] Feb 19, 2016

The Maintenance in Hannover is finished.

Thank you for your patience.

Yours sincerely
HLRN Team

(HS)



Berlin: Maintenance of Konrad on February 22, 2016
[2958] Feb 18, 2016
A system maintenance will be performed on the Berlin complex Konrad

from Monday, February 22, 7:00 AM,
until the afternoon.

Konrad will be unavailable during this time. All login sessions
will be terminated and the batch system will be stopped.

We will post a note when Konrad is online again.

(gla)



Hannover: Maintenance on Friday, Feb. 19
[2955] Feb 18, 2016

due to an important system update, a short-term
maintenance has to be scheduled for Friday, 19th 9:00.

The complex will hopefully be available again within a few hours.

We apologise for the inconvenience.

(HS)


Hannover: re-enabling quotas on work file systems
[2953] Feb 17, 2016

HLRN Hannover intends to re-enable quota enforcement on the Lustre / WORK file systems (gfs1, gfs2) after March 1st 2016.

To check whether you are over quota, use the commands

lfs quota /gfs1
lfs quota /gfs2

There is no obligation to fully use your quota - so do not hesitate to delete obsolete or unneccesary data even if you are below the limits.
:-)


Your HLRN team

(gg)



Hannover: Maintenance finished
[2943] Feb 03, 2016

The system maintenance in Hannover is finished and the XC30/40 partition (mpp1 and mpp2), data and post nodes are available again. The smp partition will be back later (probably tomorrow).

Thank you for your patience,

Your HLRN team

(gg)


The original message was:
-------------------------------------------------
A system maintenance will be performed on the Hannover
complex Gottfried

from Tuesday, February 2, 8:00 AM,
until Wednesday, February 3, 2016, late afternoon.

Gottfried will be unavailable during this time. This will include
both the Cray and the SMP system. All login sessions will be
terminated and the batch system will be stopped.




Hannover: Maintenance on February 2 and 3, 2016
[2940] Jan 14, 2016

A system maintenance will be performed on the Hannover
complex Gottfried

from Tuesday, February 2, 8:00 AM,
until Wednesday, February 3, 2016, late afternoon.

Gottfried will be unavailable during this time. This will include
both the Cray and the SMP system. All login sessions will be
terminated and the batch system will be stopped.

During the maintenance firmware and software upgrades on the storage
systems will be made to improve stability. The Lustre file system will
be upgraded to version 2.5.4. Therefore, we recommend to copy important
data to the PERM archive file system.

(hn)



HLRN Hannover: MPP1 and MPP2 open again
[2935] Jan 08, 2016

HLRN Hannover is open again.

Jobs that were running after 08:30 today on MPP1 or MPP2 in Hannover have unfortunately been lost due to a hardware problem. We will refund erroneously charged NPL automatically.

We apologize for the trouble.

(gg)


The original message was:
-----------------------------------------
Due to a network problem the MPP1 and MPP2 systems
in Hannover are unavailable.

The SMP1 and SMP2 systems are not affected.



Hannover: MPP1 and MPP2 closed
[2932] Jan 08, 2016

Due to a network problem the MPP1 and MPP2 systems
in Hannover are unavailable.

The SMP1 and SMP2 systems are not affected.

A message will be posted as soon as the MPP systems are
available again.

We apologise for the inconvenience.

(HS)


Apply for Computing Time by January 28th, 2016
[2929] Jan 07, 2016

The Scientific Board of the HLRN is inviting project proposals applying for computing time on the HLRN system.

The next deadline is January 28th, 2016, at 23:59.

Projects that need more computing time than 10,000 NPL resource units per quarter are invited to submit a project proposal ("Großprojektantrag") to the Scientific Board ("Wissenschaftlicher Ausschuss") of HLRN for the next quarterly review. Resources are allocated for one year starting April 1st, 2016, on a quarterly basis after review of the proposal (see the Application HowTo and the Scientific Board portal page). In 2016 HLRN allocates about 130 million core hours per quarter (equivalent to about 42 million NPL per year) to successful proposals.

Please note: The project abstract has to be created in a certain format. The appropriate HLRN LaTeX template can be downloaded from the HLRN web page "required documents". The use of this template is required.

In case of questions, please contact your local HLRN support person or your HLRN project consultant before submitting the proposal.

(wwb)



For even older entries see the HLRN System - News History

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