Introduction

The CES package contains the new tool CHIP (Central Hint and Information Processor) which in Run 2 replaces the obsolete Run 1 OnlineRecovery package. CHIP supervises the ATLAS data taking, takes operational decisions and handles abnormal conditions. It automates procedures and performs advanced recoveries. Furthermore it interacts with the Test Management service which allows to make informed decisions based on the outcome of the test results. CHIP is written in Java and based on a third party open source complex event processing engine.

More information about CHIP including a list of recoveries and automatic procedures can be found on the CHIP twiki page .

New CES engine version

The ESPER engine has been upgraded to version 5.5.

New automatic actions

This release sees the introduction of the new AutoPilot functionality. That can be enabled/disabled via the IGUI. The AutoPilot is an automatic procedure to let the system move from NONE to RUNNING and viceversa.
Currently the AutoPilot can be enabled only in the NONE and RUNNING state, while it can be disabled at any moment. The AutoPilot is also stopped any time a SHUTDOWN command is sent.

Here are some implementation details:


List of changes in Jira

Here is a list of issues fixed in this release: