Re: [HTCondor-users] How to specify slot specific information into same machine class ad name?

[Cole Bollig <cabollig@xxxxxxxx>]

Hi Carsten,

Was able to make something like this to work by making a custom machine resource on the EP with the following configuration:

### STARTD Configuration

# Create Custom Resource

MACHINE_RESOURCE_affinity = 1,2,3,4

NUM_SLOTS_TYPE_1 = 1

SLOT_TYPE_1 @=slot

        cpus=6

âââ# Assign 75% of affinity resources to this slot (1,2,3)

        affinity=75%

        ram=90%

        swap=100%

        disk=50%

@slot

SLOT_TYPE_1_PARTITIONABLE = true

NUM_SLOTS_TYPE_2 = 1

SLOT_TYPE_2 @=slot

        cpus=2

        # Assign 25% of affinity resources to this slot (4)

        affinity=25%

        ram=10%

        swap=0%

        disk=50%

@slot

SLOT_TYPE_2_PARTITIONABLE = true

### End STARTD Configuration

With this configuration if you run condor_status -af TotalSlotAffinity AssignedAffinity you should see:

3 1,2,3     (Slot 1 assigned 'affinity' resources)

1 4             ( Slot 2 assigned 'affinity' resources)

Then in my simple sleep job I requested a single affinity resource and a requirement to target a specific affinity value with the following:

### Job Description

executable   = /bin/sleep

arguments    = 3000

log                    = job.log

request_disk = 10M

request_cpus = 1

# Request an affinity resource

request_affinity = 1

# Specifically request affinity 4

requirements = stringListMember("4", Target.AssignedAffinity)

queue 2

### End Job Description

Note for the requirements line you just need to change the number ("4") to whichever value you want the job to target.

I am not sure if this is exactly what you need for your use case, but hopefully this helps.

Cheers,

Cole Bollig

---

From: HTCondor-users <htcondor-users-bounces@xxxxxxxxxxx> on behalf of Carsten Aulbert <carsten.aulbert@xxxxxxxxxx>
Sent: Tuesday, February 11, 2025 6:22 AM
To: Thomas Hartmann <thomas.hartmann@xxxxxxx>; HTCondor-Users Mail List <htcondor-users@xxxxxxxxxxx>
Subject: Re: [HTCondor-users] How to specify slot specific information into same machine class ad name?

 

Hi

On 2/11/25 13:19, Thomas Hartmann wrote:
> I am not sure, if I got you correctly, but maybe concurrency limits [1]
> might be an option?
> I.e., to define a consumable resource per your fragmented slots -
> classical example  might be a limited number of licenses for an
> application, that can be used in parallel. If each of your slots gets a
> concurrency limit assigned, that can be "used up" by the users.

maybe that would be working, Kind of ugly work-around but probably doable.

At the moment, we will start testing something like

IDX23 = /path/to/file/with/important/information
SLOT1_STARTD_ATTRS = IDX23

and then simply try

requirement = (isdefined(IDX23))
arguments = --file $(IDX23)

not sure, if this will fly, but let's see :)

Cheers

Carsten
--
Dr. Carsten Aulbert, Max Planck Institute for Gravitational Physics,
CallinstraÃe 38, 30167 Hannover, Germany, Phone +49 511 762 17185