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ICFP 2020
Thu 20 - Fri 28 August 2020
Mon 24 Aug 2020 16:00 - 16:15 at ICFP NY 2 - New York 2 Chair(s): Alan Jeffrey
Tue 25 Aug 2020 04:00 - 04:15 at ICFP Asia 2 - Asia 2 Chair(s): Alan Jeffrey

OCaml is an industrial-strength, multi-paradigm programming language, widely used in industry and academia. OCaml is also one of the few modern managed system programming languages to lack support for shared memory parallel programming. This paper describes the design and a full-fledged implementation and evaluation of a mostly-concurrent garbage collector (GC) for the multicore extension of the OCaml programming language. Given that we propose to add parallelism to a widely used programming language with millions of lines of existing code, we face the challenge of maintaining backwards compatibility–not just in terms of the language features but also the performance of single-threaded code running with the new GC. To this end, the paper presents a series of novel techniques and demonstrates that the new GC strikes a balance between performance and feature backwards compatibility on modern multicore processors.

Mon 24 Aug
Times are displayed in time zone: Eastern Time (US & Canada) change

14:30 - 16:30: New York 2ICFP Program at ICFP NY 2
Chair(s): Alan JeffreyMozilla Research

Public livestreams: YouTube, Bilibili (China)

14:30 - 14:45
Talk
Achieving High-Performance the Functional Way - A Functional Pearl on Expressing High-Performance Optimizations as Rewrite Strategies
ICFP Program
Bastian HagedornUniversity of Münster, Germany, Johannes LenfersUniversity of Münster, Thomas KoehlerUniversity of Glasgow, United Kingdom, Xueying QinUniversity of Glasgow, United Kingdom, Sergei GorlatchUniversity of Münster, Germany, Michel SteuwerThe University of Edinburgh
DOI Media Attached
14:45 - 15:00
Talk
Staged Selective Parser Combinators
ICFP Program
Jamie WillisImperial College London, Nicolas WuImperial College London, UK, Matthew PickeringUniversity of Bristol, UK
DOI Media Attached
15:00 - 15:15
Talk
Kindly Bent to Free Us
ICFP Program
Gabriel RadanneInria, Hannes SaffrichUniversity of Freiburg, Peter ThiemannUniversity of Freiburg, Germany
DOI Pre-print Media Attached File Attached
15:15 - 15:30
Talk
Sealing Pointer-Based Optimizations Behind Pure Functions
ICFP Program
Daniel SelsamMicrosoft Research, Simon HudonCarnegie Mellon University, Leonardo De MouraMicrosoft Research, n.n.
DOI Media Attached
15:30 - 15:45
Talk
Effects for Efficiency: Asymptotic Speedup with First-Class Control
ICFP Program
Daniel HillerströmThe University of Edinburgh, Sam LindleyHeriot-Watt University, UK / The University of Edinburgh, UK, John LongleyThe University of Edinburgh
DOI Media Attached
15:45 - 16:00
Talk
Computation Focusing
ICFP Program
Nick RiouxUniversity of Pennsylvania, Steve ZdancewicUniversity of Pennsylvania
DOI Media Attached
16:00 - 16:15
Talk
Retrofitting Parallelism onto OCamlDistinguished Paper
ICFP Program
KC SivaramakrishnanIIT Madras, Stephen DolanUniversity of Cambridge, UK, Leo WhiteJane Street, Sadiq JafferOpsian and OCaml Labs, Tom KellyOCaml Labs, Anmol SahooIIT Madras, Sudha ParimalaIIT Madras, Atul DhimanIIT Madras, Anil MadhavapeddyOCaml Labs
DOI Media Attached
16:15 - 16:30
Talk
Liquid Information Flow ControlDistinguished Paper
ICFP Program
Nadia PolikarpovaUniversity of California, San Diego, Deian StefanUniversity of California at San Diego, USA, Jean YangCarnegie Mellon University, Shachar ItzhakyTechnion, Israel, Travis HanceCarnegie Mellon University, Armando Solar-LezamaMassachusetts Institute of Technology, USA
DOI Media Attached

Tue 25 Aug
Times are displayed in time zone: Eastern Time (US & Canada) change

02:30 - 04:30: Asia 2ICFP Program at ICFP Asia 2
Chair(s): Alan JeffreyMozilla Research

Public livestreams: YouTube, Bilibili (China)

02:30 - 02:45
Talk
Achieving High-Performance the Functional Way - A Functional Pearl on Expressing High-Performance Optimizations as Rewrite Strategies
ICFP Program
Bastian HagedornUniversity of Münster, Germany, Johannes LenfersUniversity of Münster, Thomas KoehlerUniversity of Glasgow, United Kingdom, Xueying QinUniversity of Glasgow, United Kingdom, Sergei GorlatchUniversity of Münster, Germany, Michel SteuwerThe University of Edinburgh
DOI Media Attached
02:45 - 03:00
Talk
Staged Selective Parser Combinators
ICFP Program
Jamie WillisImperial College London, Nicolas WuImperial College London, UK, Matthew PickeringUniversity of Bristol, UK
DOI Media Attached
03:00 - 03:15
Talk
Kindly Bent to Free Us
ICFP Program
Gabriel RadanneInria, Hannes SaffrichUniversity of Freiburg, Peter ThiemannUniversity of Freiburg, Germany
DOI Pre-print Media Attached File Attached
03:15 - 03:30
Talk
Sealing Pointer-Based Optimizations Behind Pure Functions
ICFP Program
Daniel SelsamMicrosoft Research, Simon HudonCarnegie Mellon University, Leonardo De MouraMicrosoft Research, n.n.
DOI Media Attached
03:30 - 03:45
Talk
Effects for Efficiency: Asymptotic Speedup with First-Class Control
ICFP Program
Daniel HillerströmThe University of Edinburgh, Sam LindleyHeriot-Watt University, UK / The University of Edinburgh, UK, John LongleyThe University of Edinburgh
DOI Media Attached
03:45 - 04:00
Talk
Computation Focusing
ICFP Program
Nick RiouxUniversity of Pennsylvania, Steve ZdancewicUniversity of Pennsylvania
DOI Media Attached
04:00 - 04:15
Talk
Retrofitting Parallelism onto OCamlDistinguished Paper
ICFP Program
KC SivaramakrishnanIIT Madras, Stephen DolanUniversity of Cambridge, UK, Leo WhiteJane Street, Sadiq JafferOpsian and OCaml Labs, Tom KellyOCaml Labs, Anmol SahooIIT Madras, Sudha ParimalaIIT Madras, Atul DhimanIIT Madras, Anil MadhavapeddyOCaml Labs
DOI Media Attached
04:15 - 04:30
Talk
Liquid Information Flow ControlDistinguished Paper
ICFP Program
Nadia PolikarpovaUniversity of California, San Diego, Deian StefanUniversity of California at San Diego, USA, Jean YangCarnegie Mellon University, Shachar ItzhakyTechnion, Israel, Travis HanceCarnegie Mellon University, Armando Solar-LezamaMassachusetts Institute of Technology, USA
DOI Media Attached