It is widely accepted that cosmic rays are a plausible cause of DRAM errors in high-performance computing (HPC) systems, and various studies suggest that they could explain some aspects of the observed DRAM error behavior. However, this phenomenon is insufficiently studied in production environments. We analyze the correlations between cosmic rays and DRAM errors on two HPC clusters: a production supercomputer with server-class DDR3-1600 and a prototype with LPDDR3-1600 and no hardware error correction. Our error logs cover 2000 billion MB-hours for the MareNostrum 3 supercomputer and 135 million MB-hours for the Mont-Blanc prototype. Our analysis combines quantitative analysis, formal statistical methods and machine learning. We detect no indications that cosmic rays have any influence on the DRAM errors. To understand whether the findings are specific to systems under study, located at 100 meters above the sea level, the analysis should be repeated on other HPC clusters, especially the ones located on higher altitudes. Also, analysis can (and should) be applied to revisit and extend numerous previous studies which use cosmic rays as a hypothetical explanation for some aspects of the observed DRAM error behaviors.

Chuck will give give a short intro to tell us how he's doing and then will take questions for a short time. We may do the questions in chat and select among ...

A practical, plain-English tour of how Linux moves packets from write() to the wire and back

Prolog is based on the logic programming paradigm, which is very different from the functional and imperative paradigms that we've explored earlier. Instead ...

It's more than just crystal go brrr.High speed processors are going really fast - but keeping time is getting more difficult. It's not just the clock, but al...

How many clicks does it take to add a new VLAN to an OPNsense firewall? Nothing fancy. Just your regular, basic VLAN with its own IPv4 range. How many clicks should that take? Maybe two or three? Five if we’re real wild? Every time I add a new VLAN to OPNsense, the process feels strangely tedious, so I decided to measure exactly how many clicks it takes to add a simple VLAN to my firewall.

The cool chill of the feature freeze approaches…

Sōzu HTTP reverse proxy, configurable at runtime, fast and safe, built in Rust. It is awesome! - sozu-proxy/sozu

Allocating heap memory on the screen

Linus Torvalds Speaks on the the divide between Rust and C Linux developers and the future Linux. Will things like fragmentation among the open source commun...

Have you ever asked yourself which protocols get used when downloading pictures from the Perseverance Mars rover to Earth? I hadn’t thought about that either, until I came across an intriguing message on the internet, back in April 2024: I’m looking for someone knowledgeable of quic/quinn to help us out for our deep space IP project. Would be of part-time consulting. Please dm me if interested. The message itself is quite short and somewhat jargon-y, so it took me a few readings to fully realize what the project was about:

Introduction We (@emmatyping, @eclips4) propose introducing the Rust programming language to CPython. Rust will initially only be allowed for writing optional extension modules, but eventually will become a required dependency of CPython and allowed to be used throughout the CPython code base. Motivation Rust has established itself as a popular, memory-safe systems programming language in use by a large number of projects. Memory safety is a property of a programming language which disallows ou...

Empowering everyone to build reliable and efficient software.

Do not comply in advance.

A clone of the strace command for macOS. Contribute to Mic92/strace-macos development by creating an account on GitHub.

Open hardware and software tools for communicating with Miele appliances via their optical diagnostic interface - medusalix/FreeMDU

C++ port of the fastmcp Python library. Contribute to 0xeb/fastmcpp development by creating an account on GitHub.

Some concerns I have with moving towards "don't use Open Source, get an LLM to generate the code you want" and where it'll take us.

A blog about making culture. Since 1999.

What if everything was "async", but nothing needed "await"?In this video, I show and explain Par's automatic concurrency paradigm, by walking you through a "...