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

Gathered from CaRCC discussion.

windows/20231208.Windows-job-scheduler.md

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+Job Scheduler for Windows
+=========================
+
+
+Original question
+-----------------
+
+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
+-------------------------------
+
+"...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)