Parallel Programming

🏔️ Everest Update for the Veluwe Power Hikers We were preparing for a classic VPH high altitude expedition on top of the world. Unfortunately there is some disappointing news. Starting in 2026, Nepal is introducing strict new regulations for climbing Mount Everest. Climbers will now need to have previously summited a 7,000 meter peak in Nepal and must also submit mandatory health certificates. Because we cannot realistically summit a 7,000 meter peak and then climb Everest on the same day during our hike, I am unfortunately obliged to change the program. There is also another small complication. 1 April falls on a Wednesday, which makes organizing the expedition a bit difficult. After a poll in the WhatsApp group, we decided to move the date to **28 March** and climb the highest point of the Veluwe, **Signaal Imbosch (110 m)**. Even if it’s not Everest, don’t underestimate this hike: we will cover **22 km with about 350 metres of elevation gain** at a brisk pace. At this altitude, however, oxygen bottles are no longer recommended. Please update your RSVP if you can no longer attend due to the change. ⛰️🥾 **When and Where to Meet?** 10:10 sharp at Rheden Trainstation. ⏰ Please arrive on time, as we won’t be able to wait for latecomers. 🥾✨ https://maps.app.goo.gl/VaEtswyBps5awMoL7 **Where and When Shall We Rest?** We’ll take 2 breaks: * Lunch break in nature at Signaal Imbosch (110 m) with group photo on summit; 20 min * Snack and drink at Basecamp (80 m) where you can buy drinks and snacks; 30 min **Notifications:** * Technical equipment: avalanche transceiver (beacon), avalanche probe, and avalanche shovel (if you have them) * A compact lunch and water to share at the summit * The hike will only be canceled in case of severe avalanche risk (code 5). * If you plan to bring a companion, please ensure that they are also registered for the hike. * To be the first to get updates on new hikes, join our WhatsApp group! Feel free to ask for the QR code during the hike to easily join. * T-shirts are now available for €25, made from Fairwear-certified organic cotton with eco-friendly inks—sustainable, odor-resistant, and perfect for your hiking adventures (limited stock, available during the hike)! Let me know your size and I will bring one for you!

Een wandeling voor vaders die het zichzelf gunnen om even te willen uitwaaien én de diepte in willen. We lopen samen door de natuur, ontmoeten elkaar en delen wat er echt speelt — als vader, als man, in je werk of gewoon in je hoofd. Niets moet. Er is geen afleiding, alles draait om verbinden en inspireren. Onderweg doen we een aantal oefeningen, luisteren we naar elkaar en stellen we de vragen die er toe doen. Een ideaal moment om even tot jezelf te komen — die ontspanning neem je sowieso mee naar huis. **Past dit bij jou?** Je hoeft geen antwoorden te hebben. Alleen de bereidheid om eerlijk te zijn — naar jezelf en naar de andere vaders om je heen. **Wat kun je verwachten?** * Een kleine groep van max. 8 vaders * Een mooie route op de Veluwe * Goede gesprekken en oefeningen onderweg * Ruimte voor jouw verhaal * Koffie/thee en een snack na afloop Kortom: een wandeling waarmee je investeert in jezelf en je vaderschap. duur: 10:00-12:00 uur / investering is wat jij het waard vindt locatie: rondom Arnhem op de Veluwe

📍 Meeting point: **Nijmegen Lent Station** (⚠️ not Nijmegen Centraal!) 🗓 **Saturday, March 28th, 2026** 🕑 **14:00** After starting our journey through Dutch history with **Prehistory**, it’s time to move forward to the **Roman era**. And when we talk about Romans in the Netherlands, there is one unavoidable place to go: **Nijmegen**, the oldest city in the country, founded by the Romans as **Noviomagus**. We’ll start from the other side of the river Waal and walk towards the historic city centre, combining **river landscapes, green parks and urban history**. Along the way we’ll explore how the Romans conquered large parts of what is now the Netherlands, built forts and military camps along the Rhine (the *limes*), and established their first real city here. This walk is about **stories, traces and layers of history**—and about seeing Nijmegen through Roman eyes. 🥾 **The walk is about 5 km** and will take us through nature, parks and the city while discovering the Roman past of Nijmegen and the Netherlands. *** 🍺 **Post-walk drinks at Cafe De Zon** After the walk we’ll stop at **Cafe De Zon** to relax and have a drink together. It’s a perfect moment to chat, share impressions from the walk and wind down. If you like beer, you’ll also have the chance to try **Oersoep**, a local craft brewery from Nijmegen known for its creative and experimental beers. Of course, other drinks are available as well. *** A walk through **Roman history**, beautiful riverside views, and a relaxed drink afterwards — a perfect **Pastime afternoon**.

Give your still good laptop a second life instead of ditching it because Windows 11 says it is no good... Or you heard Linux is cool. If you have a backup of your data, that is great, else indicate that you do not, so we can help you. Do so in an extra message or to m10@m10tech.nl, else I don't receive your information. Geef je laptop die het nog prima doet een tweede kans in plaats van hem af te schrijven omdat Window 11 dat zegt... Of omdat je hoorde dat Linux gaaf is. Als je al een backup van je data hebt gemaakt is dat perfect. Of verwacht je dat wij dat doen? In dat geval graag aangeven hoe vol je harde schijf nu is... Doe dat in een extra bericht of aan m10@m10tech.nl, want de info komt anders niet door.

Zaterdag 28 maart houden hackerspaces in Nederland een open huis, ook Randomdata is van de partij. Hackerspace zijn locaties waar mensen met een technische, creatieve en nieuwsgierige mindset bijeenkomen om te werken aan projecten, elkaar te ontmoeten en te praten over onderwerpen die hen interesseren. Tijdens de open dag is het mogelijk om zelf te ontdekken wat hacken inhoudt en te zien wat er allemaal mogelijk is in een hackerspace. Tipje van de sluier? Iemands verbeeldingskracht is de meest beperkende factor! Iedereen is welkom om een kijkje te komen nemen tijdens deze jaarlijks terugkerende open dag. De deuren zijn geopend vanaf 13:00 uur, en om 17:00 is het dagprogramma afgelopen. Enkele voorbeelden van activiteiten die je kan doen: * Leren hoe kwetsbaar systemen zijn en wat daar aan gedaan kan worden. * Kennis opdoen over de juiste bescherming van je privacy en persoonsgegevens. * Zelf 3D-modellen maken en 3D-printen. * Een introductie tot Linux (neem hiervoor je laptop mee). * Een introductie tot Arduino of Raspberry Pi.

🎉**Welkom! 欢迎光临!** 🎉 We’re thrilled to welcome you to our **Dutch-Chinese Language Exchange Event** – a fun and interactive gathering where language, culture, and new friendships come together! Whether you’re learning **Dutch**, exploring **Chinese**, or just love meeting people from around the world, today is all about **sharing, speaking, and having fun**. And this time, we’re adding an extra twist — **board games!** 🃏🎲 Practice your language skills through relaxed conversation, pick up new vocabulary while playing games, and enjoy the mix of cultures in a casual, friendly setting. Whether you're a beginner or fluent speaker, there's something here for everyone. So say “你好” or “Hallo”, join a game, and let the exchange begin! As a side note, this time we will hold the event together with the Talking in Japanese MeetUp group. So we will also have Japanese speaking people in our group. You can see the full route of the hike from the link below: [Trage Tocht: Lage Vuursche, Utrecht, Netherlands - 166 Reviews, Map | AllTrails](https://www.alltrails.com/trail/netherlands/utrecht/trage-tocht-lage-vuursche?sh=evxudg&utm_medium=trail_share&utm_source=alltrails_virality) **The event itinerary will roughly be as follows**: \- We gather at Utrecht Centraal train station\. \- We take a train to "Hollansche Rading"\. station\. \- We will do our hike/walk of 15\.5 km\. \- We will take a train back to Utrecht Centraal station Some notes about the event: \- We will check attendance at the beginning of the event\, so make sure to sign up if you're joining\. \- We will collect 1 € contribution to cover the expenses on MeetUp\. \- Some pictures may be taken during the event\, if you prefer your photos not to be taken or shared please reach out to the organizer\. \- Please behave in a kind manner\. In case anyone causes trouble or bothers others they will receive a permanent ban to all the future events of this group\.

\-\-\- This time's meetup \-\-\-\- With the coming of the spring we would like to celebrate it together by going to a nature walk. Join us in this event to welcome the awakening of nature! As a side note, this time we will hold the event together with the Language Jsm MeetUp group. So we will also have Chinese speaking people in our group. You can see the full route of the hike from the link below: [Trage Tocht: Lage Vuursche, Utrecht, Netherlands - 166 Reviews, Map | AllTrails ](https://www.alltrails.com/trail/netherlands/utrecht/trage-tocht-lage-vuursche?sh=evxudg&utm_medium=trail_share&utm_source=alltrails_virality) The event itinerary will roughly be as follows: - We gather at Utrecht Centraal train station. - We take a train to "Hollansche Rading". station. - We will do our hike/walk of 15.5 km. - We will take a train back to Utrecht Centraal station Disclaimer: In case of bad weather conditions event may be postponed or cancelled. Feel free to ask questions or follow us for updates on our Insta page! [TalkingInJapanese](https://www.instagram.com/talkingjapanese?igsh=eHhhenkzNTd0Z3R6) \-\-\-\-\- Important Notes: 1- Each time we're asking a small contribution of 1 EUR p.p. for the running cost of this Meetup. You can pay at the meetup with cash or via Tikkie 2-RSVP is **required** to join the event. Please make sure to sign up to join the event on MeetUp. For those who show up without a registration you will be asked to provide information such as name and contact info. 3-During the event pictures may be taken and these may be shared in the WhatsApp group or the Instagram account of the MeetUp group. By registering for the event we assume that you are okay with this. Still in the case that you prefer not to be in the photos please contact us. \-\-\- 今回のミートアップ \-\-\-\- 二月といえば、バレンタインですね！ 今年もこのミートアップでチョコレート祭りを開催します！ カップルを組んで、二人のロマンスや日本の知識で優勝しよう！ 大人気イベント、バレンタイン・トリビアの再開です！ トリビアは4時ぴったり開始しますので、遅れないでください 重要な注意事項: 1- このミートアップの運営費として、毎回 1 人あたり 1 ユーロの少額の寄付をお願いしています。ミートアップで現金または Tikkie でお支払いいただけます。 2- イベントに参加するには、RSVP が必要です。MeetUp でイベントに参加するには、必ずサインアップしてください。登録せずに来場された場合は、名前や連絡先などの情報を提供するよう求められます。 3- イベント中に写真が撮影され、hatsApp グループまたは MeetUp グループの Instagram アカウントで共有される場合があります。イベントに登録することで、これに同意されたものとみなします。それでも、写真に写りたくない場合は、ご連絡ください。

Welcome to the event page of the Walk & Talk in Arnhem Sonsbeekpark, taking place on Sunday March 29th, 2026. This event is a informal walk where we will connect again and perhaps meet some new people. It will be the first day of Daylight Saving Time and, fortuitously, *Zeldzaam Mooi Markt* is taking place in Sonsbeek. We plan to make a stopover here. Our event is free and open for everyone to join, including Dutch and internationals. **Practical information** \- The meetup of this walk is at **13:00 at Arnhem station, near Burger King**. We’ll start walking after 10 minutes. \- A walk like this is at a casual pace and usually takes about 2 hours\, including breaks\. We are focusing on an area\, not a specific route\. This gives us some room for suggestions of participants like when to have a few minute break\. \- We will take a coffee break at a café in between or afterwards if there's enough interest\. \- B\-YOU: Bring your own umbrella\, in case of rain\. If the weather is really unacceptable we will go to a café instead\, or cancel the entire event\. \- You can leave at any time you like\. **Sign up via Meetup OR E-mail** Please sign up for this event by RSVP on Meetup OR send an e-mail to **[urbanarnhem@gmail.com](urbanarnhem@gmail.com)** . Joining the event is free, but donations will be very appreciated. We are making costs to keep this group active on Meetup, so any (small) donation will go directly to keeping our page online. We hope to see you on this walk! \*\*\* **Disclaimers** \*SOCIAL MEDIA We might upload some of our photos and videos on social media. If you don't want to be recognized, please let us know. Our Instagram is: [@urbanrural.arnhem](www.instagram.com/urbanrural.arnhem) \*RESPECT & SAFETY Everyone partaking in the event must be treated with respect, and safety is being highly prioritized. Anyone violating this can and will be required to leave. Please contact the organizer if you feel something is wrong.

* We **start at 12:15** at P&R Station Lunteren Spoorstraat 9, 6741 DE Lunteren https://maps.app.goo.gl/S1CFFxbpqNsP2VkR9 * Length: \~13 km (4 - 5 hr hiking) * What to bring: lunch, water, snack. * For whom: As always, sporty folks that like to combine social event with being active in nature. **Getting there by Train:** * To station: Lunteren https://maps.app.goo.gl/w5rTEBuumoxCgQ6U8 **Getting there by Car:** * Free car parking: at the P&R and in the streets Spoorstraat 9, 6741 DE Lunteren https://maps.app.goo.gl/tEt2gSJnAueVMNw86 **Note:** * Please **pay a small fee (3 euro)** to help us cover the (increased) yearly Meetup contribution of 240 euro. We'll ask you to pay before the start of the hike (can be on the day itself). No refunds, but in the unlikely event that hike would be cancelled and you already paid, you don't need to pay for your next hike. Thank you so much! Use the **safe link** here: https://betaalverzoek.rabobank.nl/betaalverzoek/?id=cqlYWv_MTpSjp2VkROXWhA * Keep in mind that the hike can be canceled when the weather is very bad (**always check the event before you go**). * If you RSVP 'yes' we expect you to show-up. Please do not cancel less than 24 hours before the hike. **No-shows** will lead to your removal from the group. Thanks for the understanding. * By signing up for this event, you agree to release the organizers from any responsibility and liability in all claims. As the participation is strictly voluntary and you freely choose to join, it is the responsibility of individuals participating to ensure that they are fit enough and have adequate coverage to protect themselves.

🏃🏻‍♂️🏃🏼‍♀️

Come and join us for an evening of Buddhist meditation with like-minded people. The doors open at 7:00 PM, and meditation begins promptly at 7:15 PM. The meditation will last between 30 to 40 minutes, followed by tea and biscuits for anyone who would like to stay and chat. On some evenings, there will also be a short Dharma talk to provide some Buddhist context. The meditation space is down at the canal. To get there, you can take the stairs down. The meditation is offered on a donation basis. See our [website](https://utrechtbuddhistcentre.nl/) for more information.

Join in for a morning of crafting & chatting over a drink. Just bring your own project and payment for drinks. Meet fellow crafting enthusiasts, whether it's knitting, crocheting, stitching, origami, or something more unique! We talk about our projects, exchange tipps, but also just get to know each other and enjoy a relaxed Sunday morning in good company. All ages, levels and crafts welcome! And don't be shy, we have newcomers most weeks! **We have limited space at the café, so if you've RSVPd and can't make it, please cancel as early as possible so another person can join!** We now also have a WhatsApp group, where we want to organise get-togethers and other events. Ask one of the organisers at the next Meetup you join for more information and access.

Maandelijkse, informele meetup voor mensen die actief zijn in **Bitcoin, crypto, investeren of de techwereld**. Geen presentaties of verkoop — gewoon goede gesprekken en echte connecties. \#\#\# Wat kun je verwachten? * Gesprekken over Bitcoin, crypto, investeren en tech * Delen van inzichten, ervaringen en strategieën * Praten over groei, fouten en lessen * Leren van elkaar, zonder druk of verwachtingen * Eventueel individueel handelen (op eigen verantwoordelijkheid) \#\#\# Voor wie? Deze meetup is bedoeld voor mensen die: * Interesse hebben in crypto, investeren of tech * Respectvol met anderen omgaan * Waarde hechten aan een veilige en vertrouwde omgeving \#\#\# Waarden Respect staat centraal. God en geloof worden gerespecteerd. Vloeken en onrespectvol gedrag worden niet geaccepteerd. Geen hypes — **gewoon echte gesprekken**.

**☃️ Weekly Anime Night - Winter Season ☃️** Your friendly neighbourhood anime club is there to get you through those cold days. We are watching the final episodes of **Frieren: Beyond Journey's End Season 2**! 📅 **Event Series Details** **Dates: March 29th** **Time: 19:00–21:00** **Location:** Buurtcentrum De Speler, Thorbeckelaan 18, 3551 BR, Utrecht 🎬 **What’s the Plan This Week?** 1. Before we start watching, enjoy chats with other joiners, meet new people and get comfortable to start the show! 2. **Frieren: Beyond Journey's End Season 2 - episode 9** 3. Break – Grab a drink, chat, and stretch those legs. 4. **Frieren: Beyond Journey's End Season 2 - episode 10** 5. Closing & Hangout – Let’s talk reactions, highlights, opinions, hot takes, and everything in between! **🎒 What Should You Bring?** Your favorite snacks and drinks (not provided) Your love for anime Friends, or just your awesome self – all are welcome! 🎟️ **Free & Open to All!** This is a non-commercial, community-driven event created by fans, for fans. Whether you’re new to anime or a seasoned otaku, there’s a seat on the couch for you. 🎌 **About Utrecht Anime Club** U.A.C. is an ever-growing group of collaborative and diverse people. Our goal is to bring people together from all across Utrecht (and beyond!), to create cozy and inclusive events in which we share our love of anime. 🔍 **Questions?** Drop them in the event chat – we’re happy to help! Come for the anime, stay for the laughs, finale vibes, and great people. See you there! ✨🎥🍿

Come out to Improving for our monthly iOS and Mac meetings. This Month's Presentation: Nothing yet. (You should volunteer). What is Cocoaheads (http://cocoaheads.org/)? CocoaHeads is a group devoted to discussion of Apple Computer's Cocoa Framework for programming on MacOS X and iOS (including the iPhone, iPad and Apple Watch). During monthly meetings, members present on their projects and offer tutorials on various programming topics. What is BuckeyeCocoa (http://buckeyecocoa.org/)? BuckeyeCocoa is a group of Objective-C/Swift developers/enthusiasts. We host monthly Cocoaheads and near-weekly NSCoder meetings in Columbus, Ohio. The meetings are free to attend. Presentations! Presenters welcome! We are always in need of people willing to present material. Any Swift and/or Objective-C related topic is welcome. Times can be 5 minutes (i.e. lightning talks) to a maximum of 2 hours. Interested? Contact info is on the BuckeyeCocoa website. To volunteer for a presentation contact us at @BuckeyeCocoa on Twitter. Follow us on Twitter! @BuckeyeCocoa (https://twitter.com/#!/Buckeyecocoa/) For more information: http://buckeyecocoa.org/

The Humanist Monthly Program is our longest running event and still a community favorite. In the old days it used to be called "Going to HCCO" and we still like to think of it as our flagship event. We will be hearing from Becca Powell, Director of Advocacy and Outreach at Unchained At Last, an organization whose mission is dedication to ending forced and child marriage in the United States through direct services and systems change. Unchained At Last's mission clearly meshes and addresses several of our Humanist Ten Commitments. Becca will educate us about an issue many of us may not be familiar with--but should be. Food and drinks will be provided at the event. Feel free to show up a little bit early to hang out and talk. Going forward our meetings will be hybrid. You can meet us in-person or attend online Join Zoom Meeting [https://us02web.zoom.us/j/87836564953?pwd=4Mi57ElZkDIFlb1fnlNwOJ0NiOK4tP.1](https://us02web.zoom.us/j/87836564953?pwd=4Mi57ElZkDIFlb1fnlNwOJ0NiOK4tP.1) Meeting ID: 878 3656 4953 Passcode: 760812 One tap mobile +19292056099,,87836564953#,,,,\*760812# US (New York) +13017158592,,87836564953#,,,,\*760812# US (Washington DC) The formal presentation will start at noon

**Improving Office in Franklinton** Physical location: Improving Office 330 Rush Alley Suite #150 Columbus, OH 43215 Schedule: 6:00 p.m.: Socialize, eat, and drink. Improving will be providing pizza and beverages. 6:30 to 8:00 pm. Main meeting and presentation(s). Topic: Type Annotations with John Cassidy We meet on the last Monday of each Month. Presentations are given by members and friends of this group. If you would like to do a presentation (small or large) on a python topic, please contact Central OH Python at centralohpython@gmail.com

**First meetup of the Columbus AI Engineering group.** We’ll kick things off with a practical, beginner-friendly discussion on: **How LLMs like ChatGPT actually work — and how to build real applications with them.** We’ll cover: * what’s actually happening under the hood (at a high level) * why LLMs behave the way they do (hallucinations, prompt sensitivity, etc.) * how people are building real systems with them today * where things break in practice This will be a **short, informal talk (\~15–20 min)** followed by open discussion and Q&A. Whether you’re an engineer, builder, or just curious about how modern AI systems work, you’re welcome to join. No slides, no fluff — just real conversation about real systems. We’ll hang out afterward and get to know each other.

We connect you with up to 30 Men or Women tennis partners close to your PLAYING REGION and skill level. This program is less competitive, no champions crowned, no league standings just dedicated tennis partners who want to meet up with you on the courts. Players will meet up to play a tennis match or just to hit around. Just go through the [Join Page](https://www.tenniscolumbus.com/partner-program) to enter this program. [https://www.tenniscolumbus.com/partner-program](https://www.tenniscolumbus.com/partner-program)

Our monthly PHP meetup. A virtual shindig courtesy of Zoom. Check back here for the details around 6:15 pm

**New Dojo Location!** **Draft Day Columbus** 1130 Dublin Road Columbus, OH 43215 We're going to try a new dojo location for a few weeks and see how it works Dojos are informal Python group study sessions where everyone interested in Python gathers to learn about Python, help others with Python, or just hang out. Everyone is welcome from Python beginners to experts. Bringing a laptop is encouraged (we'll have extension cords and power strips). If there's something you want to learn leave a comment on this invite so we can plan ahead. We're looking for topic suggestions and people interested in presenting at our monthly meetings. To this end we've set up a survey form at [https://docs.google.com/forms/d/15eBKF1nQQ2XS5gzD4rvhVRHMBEj7lJtHuA9wXupS3Uc](https://docs.google.com/forms/d/15eBKF1nQQ2XS5gzD4rvhVRHMBEj7lJtHuA9wXupS3Uc)