BatchEuphoria

A library for cluster / batch system developers to create batch jobs from Java without any hassle and drama. Currently this library supports the following job schedulers:

• PBS
• LSF (REST)
• direct execution

Dependencies

• RoddyToolLib

Build

Building is as simple as

./gradlew build

If you are behind a firewall and need to access the internet via a proxy, you can configure the proxy in $HOME/.gradle/gradle.properties:

systemProp.http.proxyHost=HTTP_proxy
systemProp.http.proxyPort=HTTP_proxy_port
systemProp.https.proxyHost=HTTPS_proxy
systemProp.https.proxyPort=HTTPS_proxy_port

where you substitute the correct proxies and ports required for your environment.

How to use it

First you need to create an execution service depending on the kind of job scheduler you have.

For LSF REST you need to use the RestExecutionService:

RestExecutionService executionService = new RestExecutionService("http://yourServer:8080/platform/ws","account","password")

For PBS you need to implement your own execution service with the ExecutionService interface

Currently there are two job managers which are LSFRestJobManager and PBSJobManager. For example for LSF you would initialize the job manager like this:

JobManagerCreationParameters parameters = new JobManagerCreationParametersBuilder().build()
LSFRestJobManager jobManager = new LSFRestJobManager(executionService,parameters)

For PBS it looks like this:

JobManagerCreationParameters parameters = new JobManagerCreationParametersBuilder().build()
PBSJobManager jobManager = new PBSJobManager(executionService,parameters)

You need a resource set to define your requirements like how many cores and how much memory and the time limit you need for your job.

ResourceSet resourceSet = new ResourceSet(ResourceSetSize.s, new BufferValue(10, BufferUnit.m), 1, 1, new TimeUnit("m"), null, null, null)

Then you create the Job with job name, submission script, resource set, environment variables etc.

String script=[ "#!/bin/bash", "sleep 15" ].join("\n")`
BEJob testJobwithScript = new BEJob("batchEuphoriaTestJob", null, script, null, resourceSet, null, ["a": "value"], null, null, jobManager)`

NOTE Submitted jobs are in HOLD state by default! You need to call startHeldJobs on your job manager instance at the end. Or, if you need it, cancel them e.g. on an error.

All job managers support the following functions:

• Submit job: jobManager.runJob(testJobwithScript) For PBS the submitted jobs are set on hold by default.

• Abort job: jobManager.queryJobAbortion([testJobwithScript])

• Start held jobs: jobManager.startHeldJobs([testJobwithScript])

You can find here the integration tests with full example code for PBS and LSF.

Integration Tests

To start the integration tests, please fill in host and user settings (password for lsf rest) into integrationTest.properties. Then start the tests like you'd start any unit tests.