FAS Research Computing - Notishistorik

Alla system fungerar

Status page for the Harvard FAS Research Computing cluster and other resources.

Cluster Utilization (VPN and FASRC login required): Cannon | FASSE


Please scroll down to see details on any Incidents or maintenance notices.
Monthly maintenance occurs on the first Monday of the month (except holidays).

GETTING HELP
Documentation: https://docs.rc.fas.harvard.edu | Account Portal https://portal.rc.fas.harvard.edu
Email: rchelp@rc.fas.harvard.edu | Support Hours

The colors shown in the bars below were chosen to increase visibility for color-blind visitors.
For higher contrast, switch to light mode at the bottom of this page if the background is dark and colors are muted.
I drift

SLURM Scheduler - Cannon - I drift

Cannon Compute Cluster (Holyoke) - I drift

Boston Compute Nodes - I drift

GPU nodes (Holyoke) - I drift

seas_compute - I drift

I drift

SLURM Scheduler - FASSE - I drift

FASSE Compute Cluster (Holyoke) - I drift

I drift

Kempner Cluster CPU - I drift

Kempner Cluster GPU - I drift

I drift

FASSE login nodes - I drift

I drift

Cannon Open OnDemand - I drift

FASSE Open OnDemand - I drift

I drift

Netscratch (Global Scratch) - I drift

Home Directory Storage - Boston - I drift

Tape - (Tier 3) - I drift

Holylabs - I drift

Isilon Storage Holyoke (Tier 1) - I drift

Holystore01 (Tier 0) - I drift

HolyLFS04 (Tier 0) - I drift

HolyLFS05 (Tier 0) - I drift

HolyLFS06 (Tier 0) - I drift

Holyoke Tier 2 NFS (new) - I drift

Holyoke Specialty Storage - I drift

holECS - I drift

Isilon Storage Boston (Tier 1) - I drift

BosLFS02 (Tier 0) - I drift

Boston Tier 2 NFS (new) - I drift

CEPH Storage Boston (Tier 2) - I drift

Boston Specialty Storage - I drift

bosECS - I drift

Samba Cluster - I drift

Globus Data Transfer - I drift

Notishistorik

juli 2023

Numerous nodes in bad state
  • Löst
    Löst

    The affected partitions are back up within acceptable operating percentages.

  • Identifierat
    Identifierat

    Numerous nodes are in a bad state (marked 'drng', but not those marked 'drain'). We are aware and are working to re-open these nodes as quickly as possible.

    This includes but is not limited to nodes in: argelles-delgado, kozinsky, seas_compute, kempner, and other partitions.

Software modules not available
  • Löst
    Löst

    Modules should be available again across Cannon and FASSE. If you have an open session, please log out and log in again to use modules.

    This incident has been resolved.

  • Undersöker
    Undersöker

    An unexpected bug has broken software module availability at this time. Module commands such as module load, module spider, etc may not work.

    We are currently investigating this incident.

Access Issues with holylabs storage server
  • Löst
    Löst

    This incident has been resolved.

  • Uppdatering
    Uppdatering

    We have brought the server back online in a "workaround" state and will be continuing to investigate the root cause. Access should be normal.

  • Undersöker
    Undersöker

    Lab Storage on holylabs file server is currently inaccessible. We are currently investigating this incident.

boslfs02 down
  • Löst
    Löst

    This incident has been resolved.

  • Undersöker
    Undersöker

    boslfs02 is currently inaccessible. We are investigating this incident.

A100 GPU issue
  • Löst
    Löst

    Firmware updates have resolved this issue.

  • Uppdatering
    Uppdatering

    The proscribed driver update did not fix this issue.

    We are working with Nvidia to find a fix. As a stop-gap nodes which get stuck/flagged will be marked in Slurm for reboot and rebooted once empty of jobs.

    If a A100 GPU host your lab owns is stuck in a bad state, please let us know and we will mark and reboot it.

  • Identifierat
    Identifierat

    A100s are open but still experiencing some instability. Infrequently, you may hit the issue we noted earlier.

    We are continuing to work on a solution.

  • Undersöker
    Undersöker

    An NVIDIA bug may be causing failures in A100 GPUs. nvidia-smi command is slow, or outputs "ERR!" or "No GPUs are found".

    Jobs on affected nodes may fail.

    We are investigating this issue.

juni 2023

Mounting storage from campus network
  • Löst
    Löst

    This incident has been resolved.

  • Undersöker
    Undersöker

    Due to a HUIT networking issue, mounting storage from wired campus connections may not work.

    We are working with HUIT to resolve this.

    In the meantime, you should still be able to mount storage while connected to the RC VPN.

Emergency maintenance 6/20/23 - Cannon Slurm Scheduler
  • Planerat
    juni 20, 2023 kl 11:00
    Planerat
    juni 20, 2023 kl 11:00

    WHAT
    Emergency Cannon cluster scheduler maintenance Tuesday June 20th from 7am - 11am (actual end time estimated). Running jobs will be paused during maintenance.

    Note: FASSE is unaffected by this.

    WHY
    As most of you know, there are on-going issues with the Cannon scheduler after the downtime and OS upgrades. This behavior did not show up in our earlier testing and only manifested once we were under load from user jobs again.

    After investigation we found that the scheduler is oscillating between two states every hour. During even hours the scheduler would enter a high thread state where all the traffic would pile up, causing any queries to either take a long time or time out. During odd hours the scheduler would enter a low thread state and operate normally. During periods where the scheduler is responding, jobs can be submitted and should then run normally.

    Unfortunately the root cause is still not known, and we are working closely with the vendor, SchedMD, to find a solution to return the cluster to stability. The version of slurm that we are running is 22.05.7, which while very stable — we have been running on it for the past 5 months with no problems — appears to be having issues at scale on Rocky 8.

    There is a newer version of the scheduler available, 23.02.3. This new version has a host of improvements. While the specific issue described above is not listed as one of the items fixed in this version, we anticipate that the upgrade may fix this issue owing to the various code improvements contained therein.

    Barring any solutions found over the long weekend, we intend to hold an emergency maintenance period on Tuesday June 20th starting at 7am. Running jobs will be paused. We will return Cannon to service as soon as we've completed work. Status of this maintenance will be tracked here on our status page.

    We thank you for your patience and understanding. Our team is hard at work answering your tickets and making sure that the cluster is back to full health. Also as a reminder that we hold additional Office Hours each week in June. See: https://www.rc.fas.harvard.edu/training/office-hours/

    FAS Research Computing
    https://www.rc.fas.harvard.edu/
    https://docs.rc.fas.harvard.edu/
    https://status.rc.fas.harvard.edu/

  • Slutfört
    juni 20, 2023 kl 01:16
    Slutfört
    juni 20, 2023 kl 01:16

    CANCELLED

    Emergency maintenance has has been cancelled. A solution to the scheduler issue has been found and Slurm is once again operating normally.

    We thank you for your patience and understanding.

Slurm scheduler slowness/delays
  • Löst
    Löst

    This incident has been resolved.

    A solution to the Slurm scheduler issue has been found and implemented. The scheduler is now operating normally.

    Thank you for your patience and understanding.

  • Uppdatering
    Uppdatering

    PLEASE SEE EMERGENCY MAINTENANCE NOTICE BELOW
    Emergency maintenance Tuesday June 20th 7am-11am. Running jobs will be paused.

    We are still working on finding the root cause of the scheduler slowness and timeouts. We are working with SchedMD and have sent diagnostic information for analysis.

    At this time the scheduler is up but may become unresponsive to your commands at times. You can wait and retry them.

    Jobs, once launched, should run as expected.

    OOD/VDI are working, but job submission may also be affected.

    If you receive salloc: error: Job submit/allocate failed: Invalid account or account/partition combination specified, waiting a moment and re-submitting your job again should result in a successful submission.

    Addendum: It was determined that the issue is cyclical and you will have the best luck during odd hours (e.g. - after 1pm, before 2pm) and less success interfacing with the scheduler during even hours (e.g. - after 2pm, before 3pm).

    We regret the impact this is having on your work. Updates will follow as we have them.

  • Uppdatering
    Uppdatering

    We are still working on finding the root cause of the slowness and are working with the vendor to troubleshoot.

    At this time the scheduler is up but may become responsive to your commands at times. Jobs, once launched, should run as expected.

  • Uppdatering
    Uppdatering

    Slurm is still being overwhelmed with large numbers of requests. VDI timeouts/502 errors, interactive job connections, job submissions, are all impacted.

    We are in contact with the Slurm developers to find a better resolution.

  • Monitorerar
    Monitorerar

    We have implemented updates and the scheduler appears stable and responsive.
    We will continue to monitor and update this incident.

  • Undersöker
    Undersöker

    We are currently investigating performance issues with the scheduler. This manifests in slowness when submitting jobs, job submission fails some percentage of the time, and timeout errors (including OOD/VDI).

    Also, some jobs may not exit cleanly putting nodes into drain status.

    We are working to resolve this issue. Updates to follow.

Cannon and FASSE OOD (VDI) issues
  • Löst
    Löst

    This incident has been resolved. FASSE and Cannon OOD are both available.

  • Monitorerar
    Monitorerar

    Cannon and FASSE OOD are not fully operational due to slurm being slow. With slurm slow, the apps wait too long to be launched and it can throw 502 errors

  • Identifierat
    Identifierat

    Cannon OOD is operational.

    FASSE OOD is still experiencing issues and showing errors for new connections. Existing connections are working.
    WIP

  • Undersöker
    Undersöker

    We are currently investigating issues with OOD (OpenOnDemand aka VDI).

fasselogin nodes
  • Löst
    Löst

    Login to fasselogin is working. Additional login nodes are not in the rotation and will be added back once they are healthy again. But normal login is working.

  • Undersöker
    Undersöker

    We are currently investigating an issue with fasse login nodes (fasselogin) timing out or not connectring.

maj 2023

Inga notiser rapporterade denna månad

maj 2023 till juli 2023

Nästa

For issues not shown here, please contact FASRC via
https://portal.rc.fas.harvard.edu or email rchelp@rc.fas.harvard.edu