* Added a notes concerning software options for job scheduler on Windows.

Gathered from CaRCC discussion.
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Wirawan Purwanto 7 months ago
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Job Scheduler for Windows
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Original question
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From: Deb McCaffrey <dmccaff4@asu.edu><br/>
Sent: Monday, December 4, 2023 3:25 PM<br/>
To: people-network@carcc.org<br/>
Subject: [CaRCC people] Scheduling on Windows?
Does anyone know of a way to do job scheduling on Windows? We have some researchers dealing with resource contention on their Windows server. They're just manually communicating their jobs right now.
## Several options:
### 1: HTCondor
"HTCondor offers Windows functionality. You can find more information here: https://htcondor.readthedocs.io/en/latest/platform-specific/microsoft-windows.html" (Carrie Brown)
"If you've got any questions about HTCondor on Windows, feel free to reach out to htcondor-users@cs.wisc.edu. We'd love to hear feedback!" (Brian Lin, OSG)
### 2: HyperShell
"Actually we have something that may work.
At Purdue we've developed a workflow automation tool for high-throughput computing called HyperShell (https://hyper-shell.readthedocs.io, https://github.com/glentner/hyper-shell).
It's been in use for a few years now, is cross-platform, and has a few different modes of use.
To use it as a persistent scheduler, it can have a local SQLite database file on the Windows server, or a remote Postgres instance, and it will schedule tasks on all connect executors.
It is not a resource manager though, however many concurrent tasks you say can run - will, so the workload itself needs to be told not to use more than you intend.
I've used this to orchestrate large numbers of tasks over dozens of Windows Server instances."
(Geoffrey R Lentner <glentner@purdue.edu>)
### Other places to look at:
A handy list of job scheduling software, and some such as Apache Airflow, are open source and run on Windows.
https://en.wikipedia.org/wiki/List_of_job_scheduler_software
It remains to be seen whether any other them have the features your researchers need. (David Paul Reddy)
Considerations for Windows jobs
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"...it's good to get a sense of what sort of jobs researchers running on this Windows server.
* Do they involve a GUI interface and interactive sessions?
* Are they pleasantly parallel tasks with low core requirements or bigger multi-core OpenMP or MPI ones?
* How long do the jobs normally last and how many is each individual trying to run?" (Matthew T. West, Research IT, University of Exeter)
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