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Upd:MPP Cluster: Interruption of services
by LRZ aktuell Oct. 4, 2012

Oct. 4, 2012

Changes to this message: Prolongation of maintenance 2nd Update (October 4, 15:45): Due to unforeseen problems with the electrical infrastructure, return to user operation will be delayed, probably to early next week. We'll keep you up-to-date with the status of the cluster via this URL. ----------------------------------------------------------------------- Dear users of the MEGWare MPP cluster at LRZ, due to an extended hardware and software maintenance, the MPP cluster will not be available for user operation between September 24, 8:00 and October 4, 17:00. SLURM batch processing will be suspended on September 24 in order to drain the system before the interruption starts. Part of the maintenance time indicated above is also dedicated for energy measurements on the system. The other cluster segments are not impacted by this maintenance. This information is also available on our web server http://www.lrz-muenchen.de/services/compute/aktuell/ali4403/ Reinhold Bader

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Upd:SuperMUC fully available again
by LRZ aktuell Oct. 3, 2012

Oct. 3, 2012

Changes to this message: Update 5th Update (Oct 3, 12:50) The cause of the GPFS failure on Saturday, Sep 29 has been identified as a software problem triggered by data migration to additionally installed disk space. After performing the data migration in offline mode, the system has now been returned to normal user operation again. Please produce a new login shell to properly set the SCRATCH and WORK environment variables in order to access the GPFS data from the login nodes. Submission of LoadLeveler jobs that use GPFS should now also work again. This information is also available on our web server http://www.lrz-muenchen.de/services/compute/supermuc/aktuell/ali4424/ Markus Mueller

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Upd:Update: Unscheduled maintenance on SuperMUC
by LRZ aktuell Oct. 2, 2012

Oct. 2, 2012

Changes to this message: Update 4th Update (Oct 2, 13:00) The cause of the GPFS failure on Saturday, Sep 29 has been identified as a software problem triggered by data migration to additionally installed disk space. We have decided to continue the data migration in offline mode and expect the system to become fully available again during the afternoon of Wednesday, Oct. 3. Until then, it is possible to log in to the system and perform Loadleveler processing if only data in the HOME directory are accessed. Please also note that the migration system is not affected, and is fully available. We will notify you via this URL when the system is fully available again. This information is also available on our web server http://www.lrz-muenchen.de/services/compute/supermuc/aktuell/ali4424/ Markus Mueller

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Upd:Update: Unscheduled maintenance on SuperMUC
by LRZ aktuell Oct. 1, 2012

Oct. 1, 2012

Changes to this message: Update 3rd Update (Oct 1, 17:15) The cause of the GPFS failure on Saturday, Sep 29 has been identified as a software problem triggered by data migration to additionally installed disk space. Unfortunately, further investigation is still needed before a return to user operation is possible. We will provide an update via this URL once we know more. This information is also available on our web server http://www.lrz-muenchen.de/services/compute/supermuc/aktuell/ali4424/ Markus Mueller

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Upd:Update: Unscheduled maintenance on SuperMUC
by LRZ aktuell Oct. 1, 2012

Oct. 1, 2012

Changes to this message: Update 3rd Update (Oct 1, 17:15) The cause of the GPFS failure on Saturday, Sep 29 has been identified as a software problem triggered by data migration to additionally installed disk space. Unfortunately, further investigation is still needed before a return to user operation is possible. We will provide an update via this URL once we know more. ----------------------------------------------------------------------- Dear users of SuperMUC, the reason for the problems with the GPFS filesystem on SuperMUC seem to be defective Infiniband hardware component(s), which broke as a consequence of the power failure on Sunday, September 23rd. Unfortunately, the particular hardware components could not yet be identified and we cannot reliably estimate how long the search will take. IBM is still working on the problem. We apologize for the inconveniences caused by this failure. We will inform you through an update to this announcement as soon as the problem is fixed. This information is also available on our web server http://www.lrz-muenchen.de/services/compute/supermuc/aktuell/ali4424/ Markus Mueller

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Netzwartung am 2.10.
by LRZ aktuell Oct. 1, 2012

Oct. 1, 2012

1. TUM Stammgelaende Gebaeude 7 Keller Zwischen 8:00 Uhr und 9:00 Uhr wird es bei einigen Anschluessen durch das Umhaengen auf einen neuen Switch zu einer kuzen Unterbrechung kommen. 2. Webdns-Dienst (DNS-Eintraege durch Netzverantwortliche) Wegen eines Software-Updates steht der Webdns-Dienst zwischen 8:00 Uhr und 9:00 Uhr nicht zur Verfuegung. Diese Information finden Sie im WWW unter http://www.lrz-muenchen.de/services/netz/aktuell/ali4425/ Wolfgang Beyer

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Upd:Problems with Infiniband and GPFS
by LRZ aktuell Sept. 29, 2012

Sept. 29, 2012

Changes to this message: GPFS unavailable again 2nd Update Unfortunately, during Saturday morning GPFS has become unavailable again on most nodes of the system. ----------------------------------------------------------------------- Dear users of SuperMUC, the reason for the problems with the GPFS filesystem on SuperMUC seem to be defective Infiniband hardware component(s), which broke as a consequence of the power failure on Sunday, September 23rd. Unfortunately, the particular hardware components could not yet be identified and we cannot reliably estimate how long the search will take. IBM is still working on the problem. We apologize for the inconveniences caused by this failure. We will inform you through an update to this announcement as soon as the problem is fixed. This information is also available on our web server http://www.lrz-muenchen.de/services/compute/supermuc/aktuell/ali4424/ Markus Mueller

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Upd:Problems with Infiniband and GPFS mostly resolved
by LRZ aktuell Sept. 29, 2012

Sept. 29, 2012

Changes to this message: Situation has stabilized Update The situation has stabilized for now, so job processing should work normally again. Some jobs which already were in the machine on Friday afternoon (28.9.) may still be impacted; please resubmit such jobs. ----------------------------------------------------------------------- Dear users of SuperMUC, the reason for the problems with the GPFS filesystem on SuperMUC seem to be defective Infiniband hardware component(s), which broke as a consequence of the power failure on Sunday, September 23rd. Unfortunately, the particular hardware components could not yet be identified and we cannot reliably estimate how long the search will take. IBM is still working on the problem. We apologize for the inconveniences caused by this failure. We will inform you through an update to this announcement as soon as the problem is fixed. This information is also available on our web server http://www.lrz-muenchen.de/services/compute/supermuc/aktuell/ali4424/ Markus Mueller

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Upd:Problems with Infiniband and GPFS
by LRZ aktuell Sept. 28, 2012

Sept. 28, 2012

Changes to this message: Update Dear users of SuperMUC, the reason for the problems with the GPFS filesystem on SuperMUC seem to be defective Infiniband hardware component(s), which broke as a consequence of the power failure on Sunday, September 23rd. Unfortunately, the particular hardware components could not yet be identified and we cannot reliably estimate how long the search will take. IBM is still working on the problem. We apologize for the inconveniences caused by this failure. We will inform you through an update to this announcement as soon as the problem is fixed. This information is also available on our web server http://www.lrz-muenchen.de/services/compute/supermuc/aktuell/ali4424/ Markus Mueller

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Problems with Infiniband and GPFS
by LRZ aktuell Sept. 28, 2012

Sept. 28, 2012

Dear users of SuperMUC, there are some problems with the GPFS filesystems on SuperMUC. IBM is working on the problem. We apologize for the inconveniences caused by this failure. Diese Information finden Sie im WWW unter http://www.lrz-muenchen.de/services/compute/supermuc/aktuell/ali4424/ Markus Mueller

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