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And if We D id it All Again…?

And if We D id it All Again…?. G. Lehmann Miotto. DAQ@LHC: What did I learn?. We’ve been extremely successful at solving the same problems in 4++ different ways For data-flow architectures one may still argue that differences were driven by Different experiment requirements

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And if We D id it All Again…?

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  1. And if We Did it All Again…? G. Lehmann Miotto

  2. DAQ@LHC: What did I learn? • We’ve been extremely successful at solving the same problems in 4++ different ways • For data-flow architectures one may still argue that differences were driven by • Different experiment requirements • Different risk assessment/perception of experts • For online software (control, configuration, monitoring) it is really difficult to find a technical explanation • Different people naturally chose different options DAQ@LHC Workshop

  3. Today’s Online Systems • 4 well performing systems • still improving/evolving • Evolving technologies • Keep up • Explore and track • Profit • Increase automation & usability • Note that effort is needed also to KEEP the present perfection level! DAQ@LHC Workshop

  4. How Did We Get Here? • A challenging set of problems • The lack of early existing solutions caused research work to start independently, in parallel (even within experiments) • Initially plenty of human resources (read eager experts) organized in separate communities • R&D is what we love! • No expert would willingly give up his solution • Forcing convergence seemed counterproductive DAQ@LHC Workshop

  5. DCS Took a Different Path • Long initial discussions to agree on a (third party) solution • Customized to experiments’ needs • Integrated with in-house developed components • Coordinated outside individual experiments (JCOP) • We have working detector control systems for all experiments=> also this seems a valid approach DAQ@LHC Workshop

  6. What if We Did It All Again Today? • Still a challenging set of problems • R&D is still what we love • We are organized in separate communities • Except if there was a strong managerial decision… DAQ@LHC Workshop

  7. But… • We should keep in mind that we are working on an experiment lifetime of 20 – 30 more years • We are not even half way through • With how many (4 * re-implementations) should we count? • Will we maintain a similar level of resources in the long term? • Investment from institutes • Interest of new people • Therefore, it is not completely academic to ask ourselves… DAQ@LHC Workshop

  8. Where Do We Go from Here? • Possible options: • Continue as today • Pick up the best from each system / service/ component and “merge” into a common solution • Evaluate a new, common approach DAQ@LHC Workshop

  9. a) Continue as Today • After all…. nobody would expect religions to merge after an ecumenical gathering • It may be simplest to continue improving our own systems • Now that we know better what the other experiments are doing • We may ask for expert opinions before embarking onto the next software evolution • We may decide to pick up some of the ideas that were presented for other experiments and implement them in our system • We may choose to use common technologies in specific areas • We may even launch some common projects at the periphery of our systems DAQ@LHC Workshop

  10. b) Select & Merge • May seem a viable approach, but… • We’d face the problem of fitting a square peg into a round hole… • A patched solution to nobody’s satisfaction DAQ@LHC Workshop

  11. c) Go for a Common Approach • A major effort in social engineering/team building • If we want to have a chance of success • Take time to look at how other environments have tackled the problem • Computer centers • Distributed/networked control systems • Don’t exclude a priori to go the SCADA/OPC UA way • At the very least, agree on and choose a common middleware • The only way to keep the door open to “merging” later on DAQ@LHC Workshop

  12. Summary • So far we have been very successful with our independent solutions • The long experiment lifetime demands that we ask ourselves how to proceed • We will re-design & re-implement our systems a few more times • This workshop has offered the possibility to establish communication channels • Up to us to decide to what extent it’s better to work independently or together DAQ@LHC Workshop

  13. A Big Thanks To Clara, Vasco, Luciano for the preparatory workshop discussions and to ALL of you for this nice ecumenical workshop!

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