CorrectIon: Reminder for Downtime on taki Tuesday August 22
Sorry for confusion (taki downtime scheduled for Tuesday August 22).
System Administrators will be taking the taki cluster environment offline Tuesday August 22 from 0800-1700. This is to perform required operating system and software stack patching. We expect (and hope) that the downtime will not require the entire nine hour duration. I will send an update toward the end of our downtime window alerting users to normal operation or the unlikely extension of the downtime window.
As always, let us know if you have any questions or concerns by submitting a descriptive help request form found at the following link.
Roy Prouty
UMBC HPCF System Administrator
]]>
Sorry for confusion (taki downtime scheduled for Tuesday August 22). See myUMBC Posting: https://my3.my.umbc.edu/groups/hpcf/posts/134453 for background. System Administrators will be...
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Fri, 18 Aug 2023 09:16:56 -0400
Reminder: Downtime on taki Tuesday August 22
EDIT: Sorry for confusion (taki downtime scheduled for Tuesday August 22)
See myUMBC Posting: https://my3.my.umbc.edu/groups/hpcf/posts/134453 for background.
System Administrators will be taking the taki cluster environment offline Tuesday August 22 from 0800-1700. This is to perform required operating system and software stack patching. We expect (and hope) that the downtime will not require the entire nine hour duration. I will send an update toward the end of our downtime window alerting users to normal operation or the unlikely extension of the downtime window.
As always, let us know if you have any questions or concerns by submitting a descriptive help request form found at the following link.
Roy Prouty
UMBC HPCF System Administrator
]]>
EDIT: Sorry for confusion (taki downtime scheduled for Tuesday August 22) See myUMBC Posting: https://my3.my.umbc.edu/groups/hpcf/posts/134453 for background. System Administrators will be...
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Fri, 18 Aug 2023 08:58:17 -0400
Fri, 18 Aug 2023 09:17:28 -0400
Scheduling Downtimes for ada and taki clusters
To all HPCF Users:
DoIT will be scheduling a series of downtimes over the next two months in order to provide system administrators with time to upgrade and improve various aspects of both the ada and taki cluster environments. Every effort will be made to preserve running jobs and limit downtimes to only what is necessary for the improvements.
August 8, 0700-0900 for patching storage servers
August 22, 0800-1700 for upgrade taki OS and management software stack
August 29, 0800-1700 for upgrade ada OS and management software stack
September 12, 0800-1700 for upgrading taki SLURM
September 19, 0800-1700 for upgrading ada SLURM
As always, let us know if you have any questions or concerns by submitting a descriptive help request form found at the following link.
https://doit.umbc.edu/request-tracker-rt/doit-research-computing/
Roy Prouty
UMBC HPCF System Administrator
]]>
To all HPCF Users: DoIT will be scheduling a series of downtimes over the next two months in order to provide system administrators with time to upgrade and improve various aspects of both the...
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Fri, 28 Jul 2023 17:34:25 -0400
Math 447/627 Introduction to Parallel Computing
Fall 2023, Tuesdays and Thursdays, 01:00-02:15 pm
Dear HPCF Users,
I wanted to make sure you knew that I am offering Math 447/627 Introduction to Parallel Computing this fall again. It has both an undergraduate and graduate level.
The class is a community building effort for all users of taki and ada, since you would meet other users as well as learn how to make use of the resources most effectively.
The syllabus is on my webpage at
www.umbc.edu/~gobbert (under the Teaching area near the top) with a detailed schedule. This class is specifically designed to be interdisciplinary and accessible to students from a wide range of disciplines and backgrounds.
I am planning to offer the class in HyFlex mode with both in-person and online attendance. Other modalities are possible, too, to reach the largest number of users.
The goal is for half of the semester to be an individual project, intended to be in and further your ongoing research, with a report and oral presentation. In this way, the class is supposed to further your research immediately and not distract from it.
Please, forward this to anyone else (user or not) and other students in particular.
Thank you,
Matthias Gobbert
Dept. of Math & Stat
]]>
Dear HPCF Users, I wanted to make sure you knew that I am offering Math 447/627 Introduction to Parallel Computing this fall again. It has both an undergraduate and graduate level. The...
http://www.umbc.edu/~gobbert/
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Sun, 23 Jul 2023 22:27:34 -0400
Taki still having issues
There are ongoing issues with Slurm on Taki
There are still problems with Taki. I am currently working on rebooting the nodes across the cluster. If you see nodes marked as draining or drained, these will be rebooted. This is an ongoing problem and I am working on getting this resolved. I'll update you once I have more information.
--------
Randy Philipp
]]>
There are still problems with Taki. I am currently working on rebooting the nodes across the cluster. If you see nodes marked as draining or drained, these will be rebooted. This is an ongoing...
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Fri, 07 Jul 2023 15:46:49 -0400
Taki is again having issues
There is a problem with the Slurm scheduler on Taki
We are again experiencing issues with the Slurm scheduler on Taki. If you currently have jobs running on Taki, please be aware that you may need to rerun these jobs. It is very possible we may need to reboot the cluster to resolve and current running jobs may be lost.
I will provide an update when I have more information.
--------
Randy Philipp
]]>
We are again experiencing issues with the Slurm scheduler on Taki. If you currently have jobs running on Taki, please be aware that you may need to rerun these jobs. It is very possible we may...
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Thu, 06 Jul 2023 13:03:07 -0400
Resume use of taki
To all taki users,
Users can begin normal use of the taki cluster environment. Running jobs at the start of the downtime were unaffected.
Roy Prouty
UMBC HPCF System Administrator
]]>
To all taki users, Users can begin normal use of the taki cluster environment. Running jobs at the start of the downtime were unaffected. Roy Prouty UMBC HPCF System Administrator
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Mon, 03 Jul 2023 13:45:13 -0400
Unscheduled Downtime of taki cluster
To all taki users,
System administrators are aware of issues with SLURM. At present, SLURM is not responding as expected to allocation requests and running jobs cannot be monitored. Running jobs are likely unaffected, but we will confirm after resolving the above issues.
I will send another message with that information when the issue has been resolved.
Roy Prouty
UMBC HPCF System Administrator
]]>
To all taki users, System administrators are aware of issues with SLURM. At present, SLURM is not responding as expected to allocation requests and running jobs cannot be monitored. Running...
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Sat, 01 Jul 2023 11:57:10 -0400
Sunsetting of 2013 hardware on taki
To all taki users,
tl;dr: Equipment from 2013 (both the batch and gpu partitions) will be disabled on August 15, 2023.
These Dell PowerEdge R620 & R720 nodes were purchased in 2013 as a part of an NSF MRI “Acquisition of Hybrid CPU/GPU Nodes for the Interdisciplinary UMBC High Performance Computing Facility”. After installation, this hardware constituted the bulk of the UMBC community resource known as the maya cluster as a part of the UMBC HPCF. While these nodes represented the majority of the computing power of the cluster from 2013-2018, they have been supplanted by the 2017 MRI purchase, and the 2019 GPU ada cluster purchase and no longer see much usage.
In addition, for the past year and a half, the utilization of the 2013 hardware partitions (batch and gpu) has been persistently decreasing to what is now a small fraction of their historical monthly utilization*. Also, the advanced age of the hardware is leading to more frequent hardware failures in these partitions, many of which cause jobs to fail, leading to lost work in addition to staff-hours associated with triage and repair. These nodes are also the least energy efficient of the cluster, using more power and cooling than the newer, more reliable nodes.
Given all of these points, we will be disabling these partitions on August 15, 2023 so we can focus on keeping a high-performing and reliable cluster for the campus community.
Since 2013, other NSF MRIs (in 2017 & 2019) and various community buy-ins orchestrated by dedicated faculty and staff have grown the UMBC HPCF into what is now two clusters, ada and taki. As noted above, these machines represent comparable compute power with less demand of power, cooling, and maintenance by UMBC HPCF System Administrators.
We encourage any remaining workflows utilizing the 2013 nodes to transition to the newer hardware. As always, if you have any questions, comments, or concerns–please submit an RT ticket via the form found at
Roy Prouty
UMBC HPCF System Administrator
]]>
To all taki users, tl;dr: Equipment from 2013 (both the batch and gpu partitions) will be disabled on August 15, 2023. These Dell PowerEdge R620 & R720 nodes were purchased in 2013 as...
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Wed, 28 Jun 2023 11:59:20 -0400
Update on Taki
The work on the Infiniband switch continues
Due to problems with one of our Infiniband switches, a number of 2013 nodes (batch nodes) are currently offline. The repair of the IB switch is taking substantial longer than we had anticipated. We are still working with the vendor to get the switch back online. We will keep you updated as work proceeds.
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Due to problems with one of our Infiniband switches, a number of 2013 nodes (batch nodes) are currently offline. The repair of the IB switch is taking substantial longer than we had anticipated....
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Fri, 09 Jun 2023 18:06:58 -0400