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Programming Leftovers

Submitted by Roy Schestowitz on Tuesday 1st of September 2020 01:44:00 AM Filed under
Development
  • LLVM Merges Machine Function Splitter For ~32% Reduction In TLB Misses

    At the beginning of August we reported on Google engineers proposing the Machine Function Splitter to LLVM as a means of making binaries up to a few percent faster thanks to this code generation optimization pass for splitting code functions into hot and cold portions. That work has now been merged into LLVM 12.0 with very promising results.

    The LLVM Machine Function Splitter was merged prior to the weekend into the Git code-base for what will be LLVM 12.0 early next year. Making use of this optimization pass ensures the hot code paths are loaded into the CPU cache while keeping the cold code paths at lower priority for the cache.

  • Python Vs Scala For Apache Spark
  • Is It Time To Overhaul The GNU Dynamic Linker?

    At the GNU Tools Track during this week's Linux Plumbers Conference was an interesting talk by Red Hat's Ben Woodard. He shares his perspective on how the GNU dynamic linker (ld.so) could be ripe for an overhaul in the 2020's.

    Given the stature today of Linux and the Unix wars being over, Woodard expresses his views on it could be time to overhaul the dynamic linker/loader and make it much more fitted for today's worlds. Possible areas for improvement include more robust linking, faster linking, and new performance and debugging angles. Among his "crazy ideas" would be experimenting with an ABI-aware loader, tool interface registration with the loader, an early fork in the loader for introducing new behavior, a modular library requirement solver, and more.

  • Dirk Eddelbuettel: RcppSMC 0.2.2: Small updates

    A new release 0.2.2 of the RcppSMC package arrived on CRAN earlier today (and once again as a very quick pretest-publish within minutes of submission).

    RcppSMC provides Rcpp-based bindings to R for the Sequential Monte Carlo Template Classes (SMCTC) by Adam Johansen described in his JSS article. Sequential Monte Carlo is also referred to as Particle Filter in some contexts.

    This releases contains two fixes from a while back that had not been released, a CRAN-requested update plus a few more minor polishes to make it pass R CMD check --as-cran as nicely as usual.

  • Dirk Eddelbuettel: RcppCCTZ 0.2.9: API Header Added

    RcppCCTZ uses Rcpp to bring CCTZ to R. CCTZ is a C++ library for translating between absolute and civil times using the rules of a time zone. In fact, it is two libraries. One for dealing with civil time: human-readable dates and times, and one for converting between between absolute and civil times via time zones. And while CCTZ is made by Google(rs), it is not an official Google product. The RcppCCTZ page has a few usage examples and details.

  • Set Up Passwordless Login System in Laravel
  • GSoC wrap-up - Implementing WebGPU in Servo

    Hello everyone! I am Kunal(@kunalmohan), an undergrad student at Indian Institute of Technology Roorkee, India. As a part of Google Summer of Code(GSoC) 2020, I worked on implementing WebGPU in Servo under the mentorship of Mr. Dzmitry Malyshau(@kvark). I devoted the past 3 months working on ways to bring the API to fruition in Servo, so that Servo is able to run the existing examples and pass the Conformance Test Suite(CTS). This is going to be a brief account of how I started with the project, what challenges I faced, and how I overcame them.

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today's howtos

  • How to install go1.19beta on Ubuntu 22.04 – NextGenTips

    In this tutorial, we are going to explore how to install go on Ubuntu 22.04 Golang is an open-source programming language that is easy to learn and use. It is built-in concurrency and has a robust standard library. It is reliable, builds fast, and efficient software that scales fast. Its concurrency mechanisms make it easy to write programs that get the most out of multicore and networked machines, while its novel-type systems enable flexible and modular program constructions. Go compiles quickly to machine code and has the convenience of garbage collection and the power of run-time reflection. In this guide, we are going to learn how to install golang 1.19beta on Ubuntu 22.04. Go 1.19beta1 is not yet released. There is so much work in progress with all the documentation.

  • molecule test: failed to connect to bus in systemd container - openQA bites

    Ansible Molecule is a project to help you test your ansible roles. I’m using molecule for automatically testing the ansible roles of geekoops.

  • How To Install MongoDB on AlmaLinux 9 - idroot

    In this tutorial, we will show you how to install MongoDB on AlmaLinux 9. For those of you who didn’t know, MongoDB is a high-performance, highly scalable document-oriented NoSQL database. Unlike in SQL databases where data is stored in rows and columns inside tables, in MongoDB, data is structured in JSON-like format inside records which are referred to as documents. The open-source attribute of MongoDB as a database software makes it an ideal candidate for almost any database-related project. This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo‘ to the commands to get root privileges. I will show you the step-by-step installation of the MongoDB NoSQL database on AlmaLinux 9. You can follow the same instructions for CentOS and Rocky Linux.

  • An introduction (and how-to) to Plugin Loader for the Steam Deck. - Invidious
  • Self-host a Ghost Blog With Traefik

    Ghost is a very popular open-source content management system. Started as an alternative to WordPress and it went on to become an alternative to Substack by focusing on membership and newsletter. The creators of Ghost offer managed Pro hosting but it may not fit everyone's budget. Alternatively, you can self-host it on your own cloud servers. On Linux handbook, we already have a guide on deploying Ghost with Docker in a reverse proxy setup. Instead of Ngnix reverse proxy, you can also use another software called Traefik with Docker. It is a popular open-source cloud-native application proxy, API Gateway, Edge-router, and more. I use Traefik to secure my websites using an SSL certificate obtained from Let's Encrypt. Once deployed, Traefik can automatically manage your certificates and their renewals. In this tutorial, I'll share the necessary steps for deploying a Ghost blog with Docker and Traefik.

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