Following four previous successful editions, the MoreVMs’21 workshop aims to bring together industrial and academic programmers to discuss the design, implementation, and usage of modern languages and runtimes. This includes aspects such as reuse of language runtimes, modular implementation, language design and compilation strategies. By bringing together both researchers and practitioners, the workshop aims to enable a diverse discussion on how languages and runtimes are currently being utilized, and where they need to improve further.

Invited Speakers

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Tue 23 Mar

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12:55 - 14:30
Optimizing Dynamic LanguagesMoreVMs at Virtual Space A
Chair(s): Fabio Niephaus Hasso Plattner Institute, University of Potsdam
12:55
5m
Day opening
Welcome
MoreVMs
Fabio Niephaus Hasso Plattner Institute, University of Potsdam, David Leopoldseder Oracle Labs
13:00
60m
Talk
YJIT: Building a New JIT Compiler Inside CRubyMoreVMs Invited Talk
MoreVMs
Media Attached
14:00
30m
Talk
Caching Hidden Classes for Pre-transitioning Object Memory Layout in JavaScript
MoreVMs
Tomoharu Ugawa University of Tokyo, Stefan Marr University of Kent, Richard Jones University of Kent
Media Attached
15:00 - 16:30
Performance and BenchmarkingMoreVMs at Virtual Space A
Chair(s): Sophie Kaleba University of Kent
15:00
30m
Talk
The Strange and Wondrous Life of Functions in Ř
MoreVMs
Jan Ječmen FIT CTU Prague, Olivier Flückiger Northeastern University, Sebastián Krynski Czech Technical University, National University of Quilmes, Jan Vitek Northeastern University / Czech Technical University
Media Attached
15:30
30m
Talk
Successes and Challenges in Bringing Performance to Java with Inline Types
MoreVMs
Media Attached File Attached
16:00
30m
Talk
Towards a Synthetic Benchmark to Assess VM Startup, Warmup, and Cold-Code Performance
MoreVMs
Stefan Marr University of Kent
Media Attached

Call for Extended Abstracts and Talks

============================================================================
              Call for Extended Abstracts and Talks: MoreVMs’21

                       5th International Workshop on
               Modern Language Runtimes, Ecosystems, and VMs

                     Co-located with ‹Programming›’21
             March 22nd to 26th, 2021, Online, United Kingdom

         https://2021.programming-conference.org/home/MoreVMs-2021
============================================================================

Following four previous successful editions, the MoreVMs’21 workshop aims to
bring together industrial and academic programmers to discuss the design,
implementation, and usage of modern languages and runtimes. This includes
aspects such as reuse of language runtimes, modular implementation, language
design, and compilation strategies. By bringing together both researchers and
practitioners, the workshop aims to enable a diverse discussion on how
languages and runtimes are currently being utilized, and where they need to
improve further.

In addition to conventional workshop-style submissions, MoreVMs also accepts
(and encourages) submissions that present early-stage work and emerging ideas.

Relevant topics include, but are definitely not limited to, the following:

 - Extensible VM design (compiler- or interpreter-based VMs)
 - Reusable components (e.g. interpreters, garbage collectors, ...)
 - Static and dynamic compilation techniques
 - Techniques for targeting high-level languages such as JavaScript
 - Interoperability between languages
 - Tooling support (e.g. debugging, profiling, etc.)
 - Programming language development environments
 - Case studies of existing language implementation approaches
 - Language implementation challenges and trade-offs
 - Surveys and usage reports to understand usage in the wild
 - Ideas for more predictable performance
 - Ideas for how VMs could take advantage of new hardware features
 - Ideas for how we should build languages in the future

Workshop Format and Submissions
-------------------------------

We welcome presentation proposals in the form of extended abstracts (2 to 4
pages long) and talk proposals (title and 400 words abstract) discussing new
techniques, insights, experiences, works-in-progress, as well as future
visions, from either an academic or industrial perspective.

The extended abstracts and talk proposals, and if the speakers wish, their
slides, will be published on the workshop's website. Alternatively, extended
abstracts can be published as part of the companion of ‹Programming›’21 in the
ACM DL. Publication in the ACM DL is conditional on the acceptance by the
program committee.

Please note that MoreVMs’21 is organized as an academic workshop, and as such,
speakers will be required to register for the workshop.

Author Instructions
-------------------

Submissions should use the ACM `acmart` format:
https://www.acm.org/publications/proceedings-template

If you are using LaTeX, submissions should use the 'acmart' document class with
the 'sigconf' option, and with a font size of 9 point. Please use the
Libertine/Biolinum font family. Please include page numbers in your submission
using the LaTeX command `\settopmatter{printfolios=true}`.

All submissions should be in PDF format.

Please also ensure that your submission is legible when printed on a black and
white printer. In particular, please check that colors remain distinct and font
sizes are legible.

Submission Site: https://easychair.org/conferences/?conf=morevms21

Important Dates
---------------

Extended abstract and talk submissions:  2021-01-27
Author notification:                     2021-02-15
Camera Ready:                            2021-02-26
Workshop:                                2021-03-23

All deadlines are Anywhere on Earth (AoE), i.e. GMT/UTC-12:00 hour.

Program Committee
-----------------

Maya Armyanova, Google, Germany
Maxime Chevalier-Boisvert, Université de Montréal, Canada
Lukas Diekmann, King's College London, United Kingdom
Charlie Gracie, Microsoft, Canada
Daco Harkes, Google, Denmark
Christian Humer, Oracle Labs, Switzerland
Sophie Kaleba, University of Kent, United Kingdom
Mikel Luján, University of Manchester, United Kingdom
Ana Milanova, Rensselaer Polytechnic Institute, United States
Tobias Pape, Hasso Plattner Institute, University of Potsdam, Germany
Tomoharu Ugawa, University of Tokyo, Japan

Organizers
----------

Fabio Niephaus, Hasso Plattner Institute, University of Potsdam, Germany
David Leopoldseder, Oracle Labs, Austria