changelog Updates

hpc-internal.carnegiescience.edu

System Update & Failed disk in SureStoreHD, memexnfs ZFS pool degraded

by Floyd Fayton, HPC Admin

System Update 11/6/19: System was updated on November 8th, which includes updates to SLURM, ZFS (0.6 to 0.8, which improves time to rebuild failed disk), and CentOS (7.5 to 7.7). Resolved 11/2/19: Issue resolved. Replacement disk has...

Memory failing in our SureStore UHD server (replacing DIMMs today)

by Floyd Fayton, HPC Admin

Update: Replacing the failing DIMMs now.. Issue: During IOR testing of /work on Memex, it was discovered that performance was lower than usual and two DIMMs were failing. Once discovered the manufacturer was contacted for replacements...

Intel Python Issue.. conda base corrupted

by Floyd Fayton, HPC Admin

On July 8th, the conda environment for modules, python/2.7.0 and python/3.6.0, was affected after an incomplete install for seaborn and pandas was aborted. Subsequent steps to fallback to a sane state and install those packages failed...

Error via getvnfs networking

by Floyd Fayton, HPC Admin

Fixed: by restart httpd on OpenHPC master node. Issue: Down nodes could not be reimaged because of the PXE process hanging at the getvnfs stage (seen in /var/log/messages, boot never makes it past getvnfs). Affected nodes: memex-c[014...

Login Stalled - SSH denial/System locked up

by Floyd Fayton, HPC Admin

Memex's login became unresponsive to established and new SSH sessions. A reboot was initiated shortly after. The initial concern is that a new package, abrt-gui, was installed, detected a system issue and halted the server. Admin...

Memex Up: Switch failure in Rack 2 (resolved)

by Floyd Fayton, HPC Admin

Issue: The switch in rack 2 has powered down for reasons unknown (probably failure). We will be inspecting the switch and if necessary, have Dell replace it. Apologies for the interruption of your work but we are diligently working on...

New Nodes Added - memex-c[117-124]

by Floyd Fayton, HPC Admin

Nodes, memex-c[117-124], were added to Memex on 2/13/19. These nodes are identical to memex-c[109-116], which all have 256GB of raw memory and up to 250GB of free/unused memory per node. Users can request any of these nodes by adding...

Failure of memex-c[013-014,038,072,075] - Dell ticket opened

by Floyd Fayton, HPC Admin

A Dell support ticket was opened on 2/7/19 to address the failure of compute nodes, memex-c[013-014,038,072,075]. Onsite and remote logs were emailed to Dell subject matter experts but they haven't found any hardware issues yet. Memex...

Welcome 👋

by Floyd Fayton, HPC Admin

Changelog for Memex updates and announcements.

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