Wed 17 Jul 2019 18:00 - 19:30 at Mancy - Poster session

Modern Just-in-Time compilers make extensive use of runtime profiling data as part of their optimization strategies - past behaviour is assumed to predict future behaviour. The profiling data exploited by these compilers includes both the relative execution frequencies of different program paths as well as the values observed for specific program intermediate values. The Eclipse OpenJ9 compiler currently has a form of software profiling used at high optimization levels to gather detailed information about a program’s behaviour. This profiling infrastructure incurs a very high throughput performance penalty in excess of 90% throughput as well as consuming a significant amount of memory. The overhead of profiling is lowered using sampling techniques, but this can lead to loss of precision in profiling results when the period of events coincides even loosely with the sampling frequency of the profiling instrumentation.

Over the last year and a half we have built a new software profiling framework for Eclipse OpenJ9 called JProfiling. This profiling technology lowers the throughput penalty of profiling to approximately a 30% throughput penalty without sampling. Profiling of only execution path frequency can be obtained for a throughput penalty of approximately 10%. This talk will present the profiling techniques we are using as well as our most recent work to make the profiling patchable so that we can include it in nearly all of the compiled bodies produced by our compiler for minimal throughput overhead. This patchable profiling is targeted to help the OpenJ9 runtime adapt to phase changes where past behaviour ceases to be a good predictor of future behaviour. We plan for this infrastructure to be promoted to OMR once some enabling infrastructure is refactored between the OMR and OpenJ9 projects.

Wed 17 Jul

ecoop-2019-Posters
18:00 - 19:30: Posters - Poster session at Mancy
ecoop-2019-Posters18:00 - 19:30
Poster
Linghui LuoPaderborn University, Julian DolbyIBM Research, Eric BoddenHeinz Nixdorf Institut, Paderborn University and Fraunhofer IEM
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ecoop-2019-Posters18:00 - 19:30
Poster
Alexander Asp BockIT University of Copenhagen
ecoop-2019-Posters18:00 - 19:30
Poster
Willem PenninckxKU Leuven, Amin Timanyimec-Distrinet KU-Leuven, Bart JacobsKU Leuven
ecoop-2019-Posters18:00 - 19:30
Poster
Suvam MukherjeeIndian Institute of Science, Nitin John RajInternational Institute of Information Technology, Hyderabad, Krishnan GovindrajMicrosoft Research, Pantazis DeligiannisMicrosoft Research, Chandramouleswaran RavichandranMicrosoft Azure, Akash LalMicrosoft Research India, Aseem RastogiMicrosoft Research, Raja KrishnaswamyMicrosoft Azure
ecoop-2019-Posters18:00 - 19:30
Poster
Luca FranceschiniDIBRIS, University of Genova, Italy
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ecoop-2019-Posters18:00 - 19:30
Poster
Manas ThakurIIT Madras, V Krishna NandivadaIIT Madras
ecoop-2019-Posters18:00 - 19:30
Poster
Yossi GilTechnion—Israel Institute of Technology, Ori RothTechnion
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ecoop-2019-Posters18:00 - 19:30
Poster
Juan FumeroUniversity of Manchester, UK, Michail PapadimitriouUniversity of Manchester, UK, Christos KotselidisUniversity of Manchester, UK
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ecoop-2019-Posters18:00 - 19:30
Poster
Thodoris SotiropoulosAthens University of Economics and Business, Benjamin LivshitsImperial College London, UK
ecoop-2019-Posters18:00 - 19:30
Poster
ecoop-2019-Posters18:00 - 19:30
Poster
Tetsuo KaminaOita University, Tomoyuki AotaniTokyo Institute of Technology
ecoop-2019-Posters18:00 - 19:30
Poster
Kang Hong JinSchool of Information Systems, Singapore Management University, Ferdian Thung, Julia LawallInria/LIP6, Gilles MullerLIP6-INRIA/UPMC, Lingxiao JiangSingapore Management University, David LoSingapore Management University
ecoop-2019-Posters18:00 - 19:30
Poster
Philipp Dominik SchubertHeinz Nixdorf Institut, Paderborn University
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ecoop-2019-Posters18:00 - 19:30
Poster
Abhishek TiwariUniversity of Potsdam, Sascha GroßUniversity of Potsdam, Christian HammerUniversity of Potsdam
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ecoop-2019-Posters18:00 - 19:30
Poster
Daniel A. A. PelsmaekerDelft University of Technology, Netherlands, Hendrik van AntwerpenTU Delft, Eelco VisserDelft University of Technology
ecoop-2019-Posters18:00 - 19:30
Poster
Matthias Eichholz, Eric CampbellCornell University, Nate FosterCornell University, Guido SalvaneschiTU Darmstadt, Mira MeziniTU Darmstadt, Germany
ecoop-2019-Posters18:00 - 19:30
Poster
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ecoop-2019-Posters18:00 - 19:30
Poster
Lisa Nguyen Quang DoPaderborn University, Eric BoddenHeinz Nixdorf Institut, Paderborn University and Fraunhofer IEM
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ecoop-2019-Posters18:00 - 19:30
Poster
Dhruv MakwanaUnaffiliated, Neel KrishnaswamiComputer Laboratory, University of Cambridge
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ecoop-2019-Posters18:00 - 19:30
Poster
Jonas De BleserSofware Languages Lab, Vrije Universiteit Brussel, Coen De RooverVrije Universiteit Brussel
ecoop-2019-Posters18:00 - 19:30
Poster
Xiaoli LiangIBM Canada, Daryl MaierIBM Canada
ecoop-2019-Posters18:00 - 19:30
Poster
Jafar Haminimec-DistriNet, Depatrmant of Computer Science, KU Leuven, Belgium, Bart JacobsRadboud University Nijmegen
ecoop-2019-Posters18:00 - 19:30
Poster
Alex VillazónUniversidad Privada Boliviana, Bolivia, Haiyang SunUniversità della Svizzera italiana, Andrea RosàUniversity of Lugano, Switzerland, Eduardo RosalesUniversity of Lugano, Switzerland, Daniele BonettaOracle Labs, Isabella DefilippisUniversidad Privada Boliviana (UPB), Sergio OportoUniversidad Privada Boliviana (UPB), Walter BinderUniversity of Lugano, Switzerland
ecoop-2019-Posters18:00 - 19:30
Poster
Noah Van EsSofware Languages Lab, Vrije Universiteit Brussel, Quentin StiévenartVrije Universiteit Brussel, Belgium, Coen De RooverVrije Universiteit Brussel
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ecoop-2019-Posters18:00 - 19:30
Poster
Amir ShaikhhaUniversity of Oxford, Lionel ParreauxEPFL
ecoop-2019-Posters18:00 - 19:30
Poster
Carmen Torres LopezVrije Universiteit Brussel, Robbert Gurdeep SinghUniversiteit Gent, Belgium, Stefan MarrUniversity of Kent, Elisa Gonzalez BoixVrije Universiteit Brussel, Belgium, Christophe ScholliersUniversiteit Gent, Belgium
ecoop-2019-Posters18:00 - 19:30
Poster
Shawn MeierUniversity of Colorado, Boulder, Sergio MoverEcole Polytechnique, Bor-Yuh Evan ChangUniversity of Colorado Boulder
ecoop-2019-Posters18:00 - 19:30
Poster
Pascal WeisenburgerTechnische Universität Darmstadt, Guido SalvaneschiTU Darmstadt
ecoop-2019-Posters18:00 - 19:30
Poster
Andrew CraikIBM Canada, Rahil ShahIBM Canada, Ben ThomasIBM Canada, Devin PapineauIBM Canada
ecoop-2019-Posters18:00 - 19:30
Poster
Felix PauckPaderborn University, Germany
Media Attached
ecoop-2019-Posters18:00 - 19:30
Poster
Matthias SpringerTokyo Institute of Technology, Hidehiko MasuharaTokyo Institute of Technology
ecoop-2019-Posters18:00 - 19:30
Poster
Kiko Fernandez-ReyesUppsala University, Dave ClarkeUppsala Univ. Sweden and KU Leuvern, Ludovic HenrioCNRS, Einar Broch JohnsenUniversity of Oslo, Tobias WrigstadUppsala University
File Attached
ecoop-2019-Posters18:00 - 19:30
Poster
George FourtounisUniversity of Athens, Yannis SmaragdakisUniversity of Athens