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Alpine CPU compute nodes | CU Boulder Research Computing
CU Boulder Research Computingās new / upcoming Alpine compute cluster gets its first start with these 64 CPU compute nodes. Based on the Dell PowerEdge C6525 platform, each 0.5u compute node provides two AMD EPYC 7543 āMilanā CPUs, 256 GiB of system memory, Mellanox HDR-100 InfiniBand connectivity to other CPU compute nodes, and 25Gb Ethernet connectivity to storage and the CU Boulder Science Network.
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Weāve gone back and forth on whether to install Nvidia drivers using their prepared packages in their yum repo or with the .run installer; but since this node has a new GPU, I decided to go ahead with the packages as I find them simpler, and I expected it to work (unlike some of our experiences with older GPUs).
I discovered that I already had a class that configured access.conf; so I fixed it up just a bit to make it more flexible for the future, and then configured it with hiera (now that Iāve finally gotten more comfortable with it).
The telegraf service seems like the easiest problem to fix, so Iāll start there.
Weāre using a dedicated telegraf module to configure the yumrepo that installs telegraf, and that also installs the package.
Everything looked good to me (mostly) so I tried just applying the profile again; and, of course, now it works.
I expect that the problem was (a) it tried to install the package before it configured the repo, then (b) after configuring the repo, yum didnāt refresh the repo cache in time for the next time I tried to apply the manifest.
IāllĀ āfixā this for the future by defining a dependency between the telegraf package and the influxdata repo.
Iāve been working on standing up a new Blanca login node for ICS to replace their long-standing login node that is aging out of manufacturer support. But this time I want to actually design a Blanca login service that other contributors could use; so Iām using this opportunity to genericize our configuration manifest.Ā Most of the work is already done; but a few of our profiles need a bit more work:
- Thereās a flat list of packages weāve installed just for ICS, so I need to decide how to categorize that for the future.
- The node isnāt on the correct network yet, so I havenāt applied the networking configuration yet.
- The telegraf profile wasnāt able to find the package to install, so I need to investigate that.
- I need to get the Nvidia GPU driver installed so I can start monitoring it.
- And, finally, I need to actually write an authz configuration for the host. I plan on doing this with pam_access, to control who is actually allowed to log in to the node.
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Upcoming Webinar
Landmark would like to invite you to attend the College & University Recycling Coalition webinar on Food Waste Program Design on September 11th. With just 90 minutes of your time, you'll get a comprehensive discussion of the decision points involved in designing a food recovery and composting program. We are honored to be co-sponsoring this event, so we hope you can attend!
Register Here
A Deep Dive into Food Waste Program Design
Join us for a Landmark-sponsored CURC webinar, featuring a comprehensive discussion of the decision points involved in designing a food recovery and composting program.
Thursday, September 11, 1PM - 2:30 PM ET
Click here to registerĀ
