August 2022 - Pharo-vm - lists.pharo.org

Status update of Libgit2 and CI issues

by Guillermo Polito

A couple of weeks ago we got reported a big recurrent failure on CI jobs while cloning using iceberg/libgit https://github.com/pharo-project/pharo/issues/11481. TL;DR; So far (Friday ~17h Paris time) we managed to get everything up and running. A new VM is being released by our CI, all pull requests are issued and we should have everything integrated by tonight. =-=-=-=-=-=-=-= More on the situation: Errors happened randomly with ``` error reading from the zlib stream ``` or ``` bad packet length ``` Several people helped in getting a reliable script to reproduce the issue, plus some instructions to produce a reproduction environment using a docker container. With that in our hands, we managed to corner the issue to a new incompatibility between old libgit2 versions, ssh2, OpenSSL, and (at least) Github. After testing some configurations, we decided to upgrade the libgit and related binaries to newer versions: - libgit 1.4.4 - libssh 1.9.0 - OpenSSL 1.1.1k This was of course not as straightforward as we would have liked. Libgit2 1.4.4 was not compatible with its older versions and broke our ffi bindings. We needed to provide new VM binaries for all our major platforms, make a new VM release, upgrade the libgit2 bindings, and make releases of the libgit2 bindings, iceberg, and backport to Pharo 10 and Pharo 9. TL;DR; So far (Friday ~17h Paris time) we managed to get everything up and running. A new VM is being released by our CI, all pull requests are issued and we should have everything integrated by tonight. Libgit+related compilation instructions are updated in the VM wiki https://github.com/pharo-project/pharo-vm/wiki/Building-OSX-ARM64-Third-Par… https://github.com/pharo-project/pharo-vm/wiki/Building-OSX-X86_64-Third-Pa… https://github.com/pharo-project/pharo-vm/wiki/Building-Linux-ARM64-Third-P… https://github.com/pharo-project/pharo-vm/wiki/Building-Linux-ARM32-Third-P… Libgit bindings Upgrade changes: https://github.com/pharo-vcs/libgit2-pharo-bindings/commit/0e0100f7d0f3a11c… release: https://github.com/pharo-vcs/libgit2-pharo-bindings/releases/tag/v2.2.6 Iceberg Upgrade pr: https://github.com/pharo-vcs/iceberg/pull/1605 release: https://github.com/pharo-vcs/iceberg/releases/tag/v2.0.7 Upgrading library dependencies in the VM https://github.com/pharo-project/pharo-vm/pull/447 Release VM 9.0.16 https://github.com/pharo-project/pharo-vm/releases/tag/v9.0.16 Backports to Pharo Pharo10 https://github.com/pharo-project/pharo/pull/11545 Pharo9 https://github.com/pharo-project/pharo/pull/11546 We have left for later to upgrade library dependencies for the Windows VM (x86-64, ARM64). Of course, any help in this direction is welcome. Cheers, G in behalf of the team

Aug. 19, 2022

Fwd: [Pharo-dev] Inovation Technology Award Submission: Polyphemus

by Guillermo Polito

Thanks Pierre, I forward to the Pharo vm list :) > Inicio del mensaje reenviado: > > De: pmissech <pierre.misse-chanabier(a)inria.fr> > Asunto: [Pharo-dev] Inovation Technology Award Submission: Polyphemus > Fecha: 16 de agosto de 2022, 10:36:31 CEST > Para: pharo-users(a)lists.pharo.org, Pharo Development List <pharo-dev(a)lists.pharo.org> > Responder a: Pharo Development List <pharo-dev(a)lists.pharo.org> > > Hello, > > Although i will not be able to attend ESUG'22, a friend agreed to present one of our projects to the innovation award. > **Polyphemus** is a VM related, but public aims at any kind of developers. > Particularly, the video submission talks about how to look at an image and how to **recover** dead images. > Feel free to contact me if you have any questions ! > Enjoy (and vote for Polyphemus!). > > 5 minutes video, Innovation Technology Award submission: https://youtu.be/zf3cCtNW830 > Repository: github.com/hogoww/Polyphemus/ > Additionnal information on image recovery: https://github.com/hogoww/Polyphemus/blob/main/Documentation/ResurrectingDe… > > Cheers !

Aug. 16, 2022

MPLR 2022 -- Call for Participation

by Guillermo Polito

======================================================================== Call for Participation MPLR 2022 - 19th International Conference on Managed Programming Languages & Runtimes September 14-15, 2022 in Brussels, Belgium https://soft.vub.ac.be/mplr22/ Follow us @MPLR_Conf ======================================================================== The 19th International Conference on Managed Programming Languages & Runtimes (MPLR, formerly ManLang) is a premier forum for presenting and discussing novel results in all aspects of managed programming languages and runtime systems, which serve as building blocks for some of the most important computing systems in use, ranging from small-scale (embedded and real-time systems) to large-scale (cloud-computing and big-data platforms) and anything in between (desktop, mobile, IoT, and wearable applications). This year, MPLR will be held at the campus of the Vrije Universiteit Brussel(VUB) in Brussels, Belgium. Keynotes -------- Performance Optimizations in the .NET GC Dr. Maoni Stephens, Microsoft, USA Static Compilation of JavaScript Dr. Manuel Serrano, Inria Sophia-Antipolis, France Accepted Papers --------------- Automatic Array Transformation to Columnar Storage at Run Time Lukas Makor et al. Compressed Forwarding Tables Reconsidered Jonas Norlinder et al. Event-Based Out-of-place Debugging Tom Lauwaerts et al. Machine-Learning-Based Self-Optimizing Compiler Heuristics Raphael Mosaner et al. SecSharp: Towards Efficient Trusted Execution in Managed Languages Gilang Mentari Hamidy et al. A Model Checking Framework for a New Collector Framework Bochen Xu et al. Porting a JIT compiler to RISC-V: Challenges and Opportunities Quentin Ducasse et al. Analyzing and Predicting Energy Consumption of Garbage Collectors in OpenJDK Marina Shimchenko et al. Better Understanding the Costs and Benefits of Automatic Memory Management Kunal Sareen et al. Dynamic Taint Analysis with Label-Defined Semantics Jacob Kreindl et al. Attendance ---------- Thanks to our generous sponsors, we were able to significantly reduce this yearâs registration fees. Early Registration Fees: Students: 175 Euro Regular: 250 Euro In addition to the conference participation, the registration includes: - 2-day transportation ticket in the Brussels area - welcome reception on Wednesday, September 14 - guided tour to the city hall and conference banquet on Thursday, September 15 More details, and link to registration system: https://soft.vub.ac.be/mplr22/registration/ Important Dates --------------- Early Registration: 23 August 2022 Conference Dates: 14-15 September 2022

Aug. 16, 2022