[HTCondor-users] Beginner's question regarding HTCondor basic setup

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Dear list members,

this is my first attempt to use/set up HTCondor and my first post to the ML, so hello to you all :-)

We are tring to configure a minimum HTCondor “cluster” to get into the topic, but it seems that we are misunderstand something or made 1 to x mistakes ...

If this was already described and solved frequently, I would be happy to be directed to a ML thread or any other source, my recent search did not lead me to something helpful.

We are using version 8.8.9.

You can find details of our setup below.

After installing HTCondor and creating a sample job I get the message:

“ERROR: Can't find address of local schedd”

I then saw in Task Manager that condor_schedd is not running, neither on the machine FROM which I submit the job nor the machine TO which I submit the job (central manager). In this context, does “submit jobs” in the manual mean “submit from a client PC to the central manager” OR “submit from central manager to the pool, i.e. to (a) client(s) executing the job”? Or both? Because this has implications for what box needs to be checked during setup.

What could be the reason for this problem? Did I misunderstand something and therefore set it up incorrectly?

How can I solve this?

Thank you for your time and help!

Finn

####

Setup Details:

Intended (and testing) Setup:

- 1 scheduling server (“central manager” in the docs), currently a Windows 10 VM => “SCHEDULER”

- 3-4 desktop machines/ laptops from which jobs will be submitted (test: 1 Win10 desktop) => “SUBMITTERS”

- 10-20 currently unused desktop machines (dedicated to HTCondor, will not be used by humans in parallel; test: 1 laptop) as worker bees which will receive jobs from the scheduler => “WORKERS”

After reading the docs, we set up the 3 machines using the Windows GUI installer according to the following settings:

- SCHEDULER: “Create a new HTCondor Pool”; Name of new pool: TEST; Submit jobs to HTCondor pool: Unchecked (because the docs say “Generally jobs should not be either submitted or run on the central manager machine”); “Do not run jobs on this machine”.

- SUBMITTER: “Join existing HTCondor Pool”, Hostname of central manager: (hostname of SCHEDULER); Submit jobs to HTCondor pool: Checked; “Do not run jobs on this machine”.

- WORKER: “Join existing HTCondor Pool”, Hostname of central manager: (hostname of SCHEDULER); Submit jobs to HTCondor pool: Unchecked; “Always run jobs and never suspend them”.

I do not list the remaining setup config because I assume that it is irrelevant for the issue at hand.

Based on this setup, I created a submission description file “example1_submit.txt” (which calls rscript.exe that gets the path to an R script passed as argument).

On the submitter, I then called:

condor_submit example1_submit.txt

This however returns “ERROR: Can't find address of local schedd”. condor_schedd.exe is not running on the SCHEDULER nor the SUBMITTER.

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[HTCondor-users] Beginner's question regarding HTCondor basic setup