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#multithreading

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Frontend Dogma<p>Worker Threads in Node.js: A Complete Guide for Multithreading in JavaScript, by @nodesource.bsky.social:</p><p><a href="https://nodesource.com/blog/worker-threads-nodejs-multithreading-in-javascript" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">nodesource.com/blog/worker-thr</span><span class="invisible">eads-nodejs-multithreading-in-javascript</span></a></p><p><a href="https://mas.to/tags/guides" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>guides</span></a> <a href="https://mas.to/tags/nodejs" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>nodejs</span></a> <a href="https://mas.to/tags/workerthreads" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>workerthreads</span></a> <a href="https://mas.to/tags/javascript" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>javascript</span></a> <a href="https://mas.to/tags/multithreading" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>multithreading</span></a></p>
Felix Palmen :freebsd: :c64:<p>Fixed cancelling a thread job in <a href="https://mastodon.bsd.cafe/tags/poser" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>poser</span></a>'s <a href="https://mastodon.bsd.cafe/tags/threadpool" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>threadpool</span></a>. Using a semaphore to do this seems reliable 😎 </p><p>Oh my. <a href="https://mastodon.bsd.cafe/tags/Multithreading" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Multithreading</span></a>, <a href="https://mastodon.bsd.cafe/tags/synchronization" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>synchronization</span></a>, async <a href="https://mastodon.bsd.cafe/tags/Unix" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Unix</span></a> <a href="https://mastodon.bsd.cafe/tags/signals" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>signals</span></a>, this is pure "fun" ... 🙈 </p><p><a href="https://github.com/Zirias/poser/commit/aa4e02b728a549f0e3c4687750b90749d48fcfdc" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">github.com/Zirias/poser/commit</span><span class="invisible">/aa4e02b728a549f0e3c4687750b90749d48fcfdc</span></a></p><p><a href="https://mastodon.bsd.cafe/tags/C" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>C</span></a> <a href="https://mastodon.bsd.cafe/tags/coding" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>coding</span></a></p>
Dr. Moritz Lehmann<p><a href="https://mast.hpc.social/tags/FluidX3D" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>FluidX3D</span></a> <a href="https://mast.hpc.social/tags/CFD" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>CFD</span></a> v3.2 is out! I've implemented the much requested <a href="https://mast.hpc.social/tags/GPU" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>GPU</span></a> summation for object force/torque; it's ~20x faster than <a href="https://mast.hpc.social/tags/CPU" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>CPU</span></a> <a href="https://mast.hpc.social/tags/multithreading" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>multithreading</span></a>. 🖖😋<br>Horizontal sum in <a href="https://mast.hpc.social/tags/OpenCL" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>OpenCL</span></a> was a nice exercise - first local memory reduction and then hardware-supported atomic floating-point add in VRAM, in a single-stage kernel. Hammering atomics isn't too bad as each of the ~10-340 workgroups dispatched at a time does only a single atomic add.<br>Also improved volumetric <a href="https://mast.hpc.social/tags/raytracing" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>raytracing</span></a>!<br><a href="https://github.com/ProjectPhysX/FluidX3D/releases/tag/v3.2" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">github.com/ProjectPhysX/FluidX</span><span class="invisible">3D/releases/tag/v3.2</span></a></p>
Giuseppe Bilotta<p>Remember when I mentioned we had ported our <a href="https://fediscience.org/tags/fire" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>fire</span></a> propagation <a href="https://fediscience.org/tags/cellularAutomaton" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>cellularAutomaton</span></a> from <a href="https://fediscience.org/tags/Python" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Python</span></a> to <a href="https://fediscience.org/tags/Julia" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Julia</span></a>, gaining performance and the ability to parallelize more easily and efficiently?</p><p>A couple of days ago we had to run another big batch of simulations and while things progressed well at the beginning, we saw the parallel threads apparently hanging one by one until the whole process sat there doing who know what.</p><p>Our initial suspicion was that we had come across some weird <a href="https://fediscience.org/tags/JuliaLang" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>JuliaLang</span></a> issue with <a href="https://fediscience.org/tags/multithreading" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>multithreading</span></a>, which seemed to be confirmed by some posts we found on the Julia forums. We tried the workarounds suggested there, to no avail. We tried a different number of threads, and this led to the hang occurring after a different percent completion. We tried restarting the simulations skipping the ones already done. It always got stuck at the same place (for the same number of threads).</p><p>So, what was the problem?</p><p>1/n</p>
Christian Grobmeier<p>Multithreading can lead to deadlocks. Do one thing at a time, you are not the JVM. </p><p>December 13<br><a href="https://mastodon.social/tags/ZenDevAdvent" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ZenDevAdvent</span></a> <a href="https://mastodon.social/tags/java" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>java</span></a> <a href="https://mastodon.social/tags/programming" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>programming</span></a> <a href="https://mastodon.social/tags/multithreading" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>multithreading</span></a></p>
EnigmaRotor<p><span class="h-card" translate="no"><a href="https://mastodon.bsd.cafe/@stefano" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>stefano</span></a></span> <span class="h-card" translate="no"><a href="https://mastodon.bsd.cafe/@ricardo" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>ricardo</span></a></span> <a href="https://mastodon.bsd.cafe/tags/multithreading" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>multithreading</span></a></p>
Royce Williams<p>Multithreaded CLI developers: let your users configure the number of threads.</p><p>Entire classes of use cases are hiding inside that will make <em>your</em> life easier as a dev -- and <code>threads=1</code> is usually not hard to add.</p><p>One example: if your multithreaded tool works significantly faster on a single file when I force your tool to just use a single thread and parallelize it with <code>parallel --pipepart --block</code> instead, then either:</p><ol><li><p>you might decide to develop sharding the I/O of the physical file yourself, or</p></li><li><p>you might consciously decide to <em>not</em> develop it, and leave that complexity to <code>parallel</code> (which is fine!)</p></li></ol><p>But if your tool has no <code>threads=N</code> option, I have no workaround.</p><p>Configurable thread count lets me optimize in the meantime (or instead).</p><p><a href="https://infosec.exchange/tags/CLI" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>CLI</span></a> <a href="https://infosec.exchange/tags/multithreading" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>multithreading</span></a></p>
Python Ireland - old account<p>Sadhana Srinivasan: The Gilectomy: Past, Present and Future @ PyCon Ireland 2023</p><p><a href="https://youtu.be/bC5pdoOXXoc" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="">youtu.be/bC5pdoOXXoc</span><span class="invisible"></span></a></p><p>In Python, multithreading has historically faced challenges due to the Global Interpreter Lock (GIL). However, after years of ongoing efforts, the community has achieved a breakthrough with the acceptance of PEP 703.<br>This talk will delve into the GIL, its origins, and the reasons for its removal. </p><p><a href="https://mastodon.social/tags/PyCon" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>PyCon</span></a> <a href="https://mastodon.social/tags/PyConIe" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>PyConIe</span></a> <a href="https://mastodon.social/tags/PyConIe2023" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>PyConIe2023</span></a> <a href="https://mastodon.social/tags/GIL" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>GIL</span></a> <a href="https://mastodon.social/tags/pep703" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>pep703</span></a> <a href="https://mastodon.social/tags/multithreading" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>multithreading</span></a></p>
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