Introduction

The CES package contains the new tool CHIP (Central Hint and Information Processor) which replaces the obsolete OnlineRecovery package. The CHIP supervises the ATLAS data taking, takes operational decisions and handles abnormal conditions. It automates procedures and performs advanced recoveries. Furthermore it has the possibility to interact 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 .

Core functionality

The CHIP takes the decision what to do in case of applications of the Run Control tree going into the error state, failing, crashing, etc. Normally the action taken will be according to the configuration settings for the specific application (IF-FAILS, IF-DIES, IF-ERROR) with the following exceptions:

Known bugs, problems and limitations

The CHIP does not yet implement all automatic procedures and advanced recovery mechanism which were available in the OnlineRecovery package and/or are listed on the twiki page linked above. The current release contains the following recoveries: The current release contains the following auto procedures: The CHIP functionality will be expanded in future patches (Clock switching,..).