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| Info |
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Only available on EUMETSAT side. Currently in beta testing. This service is available as best effort for testing. Be aware when trying this service. |
| Table of Contents |
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Introduction
Many problems in Earth Observation and modelling communities require a common processing algorithm independently applied to thousands (or millions!) of bits of input data. A system to do this with many processing nodes is "High Throughput Computing" (vs "High Performance Computing", which concentrates on running large jobs that will not fit on a single machine on a pool of processing nodes, typically using MPI).
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Of course, any tenant can install their own batch processing systems for their own purposes with their own resources, but will not be able to take advantage of other shared resources in a centrally organised way.
General
EWC HTcondor is a managed service. The central manager node is deployed in a tenancy on the EWC. Users can join the existing pool adding compute and submit nodes.
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Maintenance | Centrally Managed Tenancy, easy 'one click' deployment |
Deployment | Multi tenancy |
Resource | Join automatically the main HTCondor Pool, no need for password or any configuration, only choose the plan for the machine your want to add |
Usage | Easy 'one click' deployment, simple examples for running a job with docker universe |
Network | VPN, which allows processing nodes in a tenancy to communicate with the scheduler / master nodes |
Scheduling | Single schedulers in each tenancy, no possibility to erase other tenancies jobs |
Execute nodes
- No access to execute host for containers
- No access to other containers running on execute node
- Isolated environment for containers
- No autoscaling
- No NFS
Submit nodes
- Only docker universe allowed
- Only condor_submit command allowed
- Private network in the tenancy enabled to allow access to tenancy-internal resources/files
- Condor transfer mechanism allowed
Deploy HTCondor nodes
Pre-requisite
Before deploying an HTcondor node, you need to create an htcondor specific security group. You can follow this page: Creating Security Groups in Morpheus to know how to create security groups.
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Rule name | Direction | Rule Type | Protocol | Port Range | Source Type | Source | Destination Type |
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egress | Custom Rule | TCP | All | Instance | |||
egress | Custom Rule | UDP | All | Instance | |||
9618-tcp | ingress | Custom Rule | TCP | 9618 | Network | 100.64.0.0/10 | Instance |
Deploy execute or submit node
- Go to Provisioning → Instances and click on Add+ to add a new instance
- Select Htcondor Submit/Execute node
Fill data required:
- plan: choose your plan
- network: private
- security group: htcondor, ssh (only for submit node)
4. Finalize provisioning steps.
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- ssh into your submit node
- check if the node appears in the list of execute nodes, running condor_status
Docker universe job in HTCondor
Try this tutorialon how to create a container and push it to a registry using docker. Moreover it provides an example job that can be submitted to HTCondor.
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