CHEP Rehearsals

Europe/Zurich
53/R-044 (CERN)

53/R-044

CERN

12
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    • 10:20 10:40
      Exploring polyglot software frameworks in ALICE with FairMQ and fer 20m
      Speaker: Dr Sebastien Binet (IN2P3/LPC)

      Here are some short notes from the discussion:

      • Please put slide numbers;
      • It is not clear if you will have possibility to use Web presentation, please prepare a PDF version;
      • Use the ALICE logo to have minimal "ALICE look";
      • Too much and too long introduction to Go;
      • Possible question: do you have users and real code?
        • The MUON detector is planning to use Go devices.
    • 10:40 11:00
      ALFA: ALICE-FAIR new message queuing based framework 20m
      Speaker: Mohammad Al-Turany (CERN)

      Here are the short notes from the discussion:

      • Date and slide numbers are not visible, please change the style;
      • The quality of the screenshots is bad;
      • Slide 9 "cheating"picture gives wrong message;
      • Please synchronise with Giulio the descriptions, abbreviations and topologies;
        • We got the impression it was different representation of the same thing.
    • 11:00 11:20
      Grid services in a box - container management in ALICE 20m
      Speaker: Maksim Melnik Storetvedt (Western Norway University of Applied Sciences (NO))

      Here are the short notes from the discussion:

      • Slide 4 - too long, it looks like a repetition;
      • Use 16:9 layout;
      • Performance graphs: split in two separate pictures and use bigger fonts;
      • Clarify the conclusions:
        • The statement "similar performance, less overhead" is misleading;
        • Say that we are ready for the future when the sites are moving to containers;
        • Compare with the virtual machines overhead;
      • Slide 6 - autofs is a problem, cvmfs is not;
      • Docker Swarm is dying,use Kubernetes;
      • When you speak, put accents on the key messages.
    • 11:20 11:40
      GPU-based Online Track Reconstructions for the ALICE TPC in Run 3 with Continuous Read Out 20m
      Speaker: David Rohr (CERN)

      Here are the short notes from the discussion:

      • The 2 ms timeframe is what is shown since generating realistic 20 ms timeframe is not easy on a laptop;
      • Put slide numbers;
      • Define what is "mu" since not everybody from the computing community knows;
      • Add which entropy encodings we consider;
      • Clarify the sentence about 40 cores vs 800 cores and probably add text with arrows on the performance picture;
      • Figures @ track fit (?);
      • Why is GPU working so well for ALICE?
    • 10:00 10:20
      FairRoot and ALICE O2 multithreading simulation 20m
      Speaker: Ivana Hrivnacova (Centre National de la Recherche Scientifique (FR))

      Here are the short notes from the discussion:

      • May be we do not need slide 2 with the outline since the talk is short;
      • The talk was longer than 12 min.;
      • The test slide took longer than needed;
      • Use "O square" instead of "O two";
      • On sl. 13 - TGeant3 and MT is misleading in the tutorial.
    • 10:20 10:40
      A scalable and asynchronous detector simulation system based on ALFA 20m
      Speaker: Sandro Christian Wenzel (CERN)

      Here are the short notes from the discussion:

      • Slide numbers on the "usual place";
      • Slide 3 - no quotes;
      • Slide 6 - message queue;
      • Slide 7 - remove it is "very easy";
      • Slide 12 - legend.
    • 10:40 11:00
      JAliEn: the new ALICE high-performance and high-scalability Grid framework 20m
      Speaker: Miguel Martinez Pedreira (Johann-Wolfgang-Goethe Univ. (DE))

      Here are the short notes from the discussion:

      • Layout - create your own PDF;
      • Slide 2 - the 36-38% growth: better use "significant growth", or "factor 10 from the beginning". You can probably remove the slide; 
      • Slide 3 - O2 facility in Run 3;
      • Slide 8 - the colours of the text should be adjusted;
      • Slide 9 - MySQL cluster?
    • 11:20 11:40
      Readout software for the ALICE integrated Online-Offline (O2) system 20m
      Speaker: Filippo Costa (CERN)

      Here are the short notes from the discussion:

      • Slide 6 - add picture?
      • Side 8 - split in 2 slides?
      • Slide 10 - the picture is not visible, add picture of the machine;
      • Align the slide numbers.
    • 12:00 12:20
      The ALICE Analysis Framework for LHC Run 3 20m

      ICHEP talk

      Speaker: Markus Bernhard Zimmermann (CERN)

      Here are the short notes from the discussion:

      • Use Run 2, Run 3 instead of Run II and Run III;
      • Slide 2: data set -> typical data set which goes through a train;
      • Slide 2: put the best guess about the number of data sets and the number of files;
      • Slide 2: human readable formats of numbers;
      • Slide 6 - fast decompression, see Root IO workshop and the adoption of LZ4.
    • 12:20 12:40
      Towards the ALICE Online-Offline (O2) control system 20m
      Speaker: Teo Mrnjavac (CERN)

      Here are the short notes from the discussion:

      • Slide 2: abbreviations, terminology. Use O2 facility. Specyfy the number of FLP and EPN;
      • Reminder slide what is the ALICE control system doing;
      • Contemporary -> latest or modern;
      • Slide 8: you use Mesos to build custom scheduler;
      • Mesos is a tool to solve the tasks of the control system, underline that one day it might be replaced;
      • Do not stick to only one (Mesos) solution;
      • GO slide is kind of "preaching", just mention what we use GO for;
        • You can point to the presentation of Sebastien Binet;
      • Accent on the goals and not on the tools;
      • DDS is not mentioned. We are searching for a scheduler, but DDS is not. The schedulers may have deployment functionality, but how the control system interacts with the devices? Using DDS or directly (slide 12)?
        • It is explicit decision since we are evaluating different solutions;
        • Underline it is R&D of the Run 3 Control system;
        • The confusion comes from slide 12 and 13, where we have the OCC plugin and O2 executor.;
        • Underline the flexibility;
      • Slide 12: use simply "Process" and "Device" on the bottom;
      • Slide 12: where would DDS fit in the picture?
      • Slide 14 or Conclusions:
        • "See also DDS poster for alternative approach to deployment on large clusters..."
    • 16:40 17:00
      Online reconstruction of tracks and vertices using the Upgraded Inner Tracking System of ALICE at the LHC 20m
      Speaker: Mr Matteo Concas (INFN e Politecnico di Torino (IT))
      • In the conclusions, please underline you have one algorithm and two implementations, not two algorithms.
      • Add units in the table.
      • In the conclusions mention that the results are identical from GPU and CPU.
      • Please add your poster ID somewhere on the poster. It will be used in the vote for best poster.
    • 17:00 17:20
      Using Generative Adversarial Networks for fast simulations in the ALICE Experiment 20m
      Speaker: Tomasz Piotr Trzcinski (Warsaw University of Technology (PL))
      • Slide 3 - visualisation does not work with PDF. How do you show it? - Power point.
      • Slide 6 - make it clear that the noise is used to initialise the GAN;
      • Do you generate the charge? - it is a parallel chain in development;
      • How do you take into account the magnetic field? - we suppose constant field with fixed value (0.5T). We plan to use it as input.
      • The single track simulation does'n not account for cluster merging, shared clusters, etc.
      • Please add a side with the work in progress and plans.
    • 17:20 17:40
      ALICE Overwatch: Online monitoring and data quality assurance using HLT data 20m
      Speaker: Raymond Ehlers (Yale University (US))
      • Slide 10 - you spent a lot of time as you were apologising you did this works;
      • Slide 7  and 8 - too much time for explaining the sliders;
      • Slide 3 - put the year when the project started;
      • Slide 4 - give some information about the HLT algorithms, the data transport and the types of objects you are sending (histograms). In addition this is a good example of sending ROOT objects using FairMQ and can be considered as O2 prototype.
    • 17:40 17:45
      DDS - The Dynamic Deployment System 5m
      Speaker: Andrey Lebedev (GSI - Helmholtzzentrum fur Schwerionenforschung GmbH (DE))
      • Put the poster ID to allow voting in the competition for best poster.
      • Make the "user perspective" look as the top (may be use more visible box).
      • Move the command line interface to the right and add prompt.
      • In the motivation - use "in context" instead of "in frames".
    • 17:45 17:50
      The Security model of the ALICE next generation Grid framework 5m
      Speaker: Volodymyr Yurchenko (National Academy of Sciences of Ukraine (UA))
      • Add the references at the end of the poster, if you have any.
      • Put the names of the authors in bold.
    • 17:50 17:55
      A simulation tool for ALICE storage and computing resource usage 5m
      Speakers: Armenuhi Abramyan (Yerevan Physics Institute), Armenuhi Abramyan (A.Alikhanyan National Science Laboratory (AM))
      • In 2017 we did not have Pb-Pb data, so it is not good to use it for extrapolation for Run 3. Take 2015 as reference Run 2 period.
      • Put the poster ID to allow voting in the competition for best poster.
      • The red "...under discussion stage." -> "...under discussion."
      • Move the ALICE logo on top.
      • Put the names of the authors in bold.
      • Crosscheck the tables on bottom left.
    • 17:55 18:00
      Shared Memory Transport for ALFA 5m
      Speaker: Alexey Rybalchenko (GSI - Helmholtzzentrum fur Schwerionenforschung GmbH (DE))
      • Put the poster ID to allow voting in the competition for best poster
    • 18:00 18:05
      RDMA-accelerated data transport in ALFA 5m
      Speaker: Dennis Klein (GSI - Helmholtzzentrum fur Schwerionenforschung GmbH (DE))
      • Put the poster ID to allow voting in the competition for best poster
    • 18:05 18:10
      ALICE O2 setup for TPC read-out tests for the LHC run 3 5m
      Speaker: Johannes Lehrbach (Johann-Wolfgang-Goethe Univ. (DE))
      • Put the poster ID to allow voting in the competition for best poster.
      • Complete the poster and make the new version available for comments by Wednesday.
    • 18:10 18:15
      Online track fit for the ALICE TPC detector in Online-Offline framework 5m
      Speaker: Sergey Gorbunov (Johann-Wolfgang-Goethe Univ. (DE))
      • Put the poster ID to allow voting in the competition for best poster.
      • "...round-of problem" -> "...rounding error".
      • Use bigger font, especially for the pictures. Make it readable from 1 m distance.
      • Put summary.
    • 10:00 10:20
      Evolution of the ALICE Software Framework for LHC Run 3 20m
      Speaker: Giulio Eulisse (CERN)

      Friday:

      • On slide 2 or 3 put reference to the presentation of David;
      • Speak slower;
      • The introduction is too long;
        • Comparison with the multithreading (TBB) approach;
        • Scheduling;
        • Throughput optimisation;
        • Move the code example to the backup slides.

      Tuesday:

      • Slide 7: put DPL abbreviation there
      • Slide 16: add link to the DDS poster
      • The talk is ready, do not forget to submit it to CHEP2018 Indico page one week before the conference
    • 10:20 10:40
      A prototype for the ALICE Analysis Facility at GSI 20m
      Speaker: Kilian Schwarz (GSI - Helmholtzzentrum fur Schwerionenforschung GmbH (DE))
      • Avoid vertical text;
      • Use 16:9 layout;
      • Slide 3: Virt. Plat. -> Virtual Platform or VM. Remove the hostnames, use generic names. Avoid the username. Total capacity 15;
      • Slide 7: Use link for GitHub commit. Simplify the text;
      • Slides with orange boxes: make the font bigger;
      • Slide 11, 12: make the font on the axes and titles bigger, make the legend more visible. Multiple squares per data point? Outlier on slide 12 - check it;
      • Slide 13: overlapping points - make sure the values are not plotted twice;
      • Shorten the presentation by 1.5 min.

      All requirements have been fullfilled. New slides have been uploaded

       

    • 10:40 11:00
      The ALICE Analysis Framework for LHC Run 3 20m
      Speakers: Dario Berzano (CERN), Dario Berzano (Universita e INFN)
      • Slide 2: 5 MB/s is per job, while Slide 3: 200 GB/s is integrated, which means 2MB/s with 50 K cores;
      • Slide 3: local fast storage;
      • Slide 3: for the others the writing is limiting factor. We do not have this limitation;
      • Slide 8: 10 GB time frame is not after the readout;
      • Slide 9: "We plan to use SoA in Run 3" or keep just columnar, SoA is a detail;
      • Slide 10: (ROOT, Apache Parquet) several prototypes investigated;
      • Slide 14: The decompression is slowing down, but is not limiting factor. What is the analysis you run?
    • 11:00 11:20
      Software training for the next generation of Physicists: joint experience of LHCb and ALICE 20m
      Speaker: Dario Berzano (CERN)
    • 11:20 11:40
      Data handling in the ALICE O2 event processing 20m
      Speaker: Matthias Richter (University of Oslo (NO))

      Here are the short notes from the discussion:

      • Complete the presentation;
      • What is the main idea and the message?
        • Data format?
        • Software framework?
        • Efficient data organisation?
        • "For efficient message passing the data has to be organised in a specific way..."
      • E-mail address: use the CERN one?
      • Scope of the presentations
        • from raw data headers to very high level things will be difficult to cover in 12 min;
        • not more than 7 messages;
        • do not introduce the RDH fields.
      • Check the order of the talks in the track, so that only one person introduces ALICE.
    • 11:40 12:00
      ALICE Track visualisation options for LHC Run 3 20m
      Speaker: Julian Wojciech Myrcha (Warsaw University of Technology (PL))

      Here are the short notes from the discussion:

      • Underline that OpenGL is not safe option;
      • Say what is Vulcan;
      • Slides 5-7 are "too dry", may be some picture of XY and YZ projections?
      • Run 3 information is missing: challenges, hierarchical navigation, possibility to debug algorithms and detectors;
      • Too much on the technology, not enough interesting pictures;
      • Do not discuss the ALICE experiment;
      • Drawing performance is only one aspect of the visualisation;
      • Mention that we will need real time filters;
      • The time dimension is more important in Run 3;
      • Spilt the presentation in performance and visualisation parts.
    • 12:00 12:20
      Data distribution and load balancing for the ALICE Online-Offline (O2) system 20m
      Speaker: Gvozden Neskovic (Johann-Wolfgang-Goethe Univ. (DE))

      Here are the short notes from the discussion:

      • What is the goal? - To describe the current research;
      • Network technology is to be defined, while you present Infiniband as the only solution;
      • RDMA is one option, please list also the others;
      • Slide 9 - if the load balancing is related to the network, this is to be stated;
      • This is R&D, state it clearly;
      • New iteration on the presentation is needed, probably in the WG, then send it;
      • Fix the layout, fonts and the pictures.
    • 12:20 12:25
      A new cluster finder for ALICE MUON arm for Run3 5m
      Speaker: Mr Sean Murray (University of Cape Town (ZA))