<p><span class="h-card" translate="no"><a href="https://chaos.social/@gsuberland" class="u-url mention">@<span>gsuberland</span></a></span> After a couple days of crickets from my usually very responsive support engineer, I got an email asking me to join a call with a VP.</p><p>I figured this was gonna be really good or really bad.</p>

<p><span class="h-card" translate="no"><a href="https://ioc.exchange/@azonenberg" class="u-url mention">@<span>azonenberg</span></a></span> hahaha</p>

<p><span class="h-card" translate="no"><a href="https://chaos.social/@gsuberland" class="u-url mention">@<span>gsuberland</span></a></span> I literally got fed up with how slow the solver was, threw it in VTune and IDA, rewrote the inner loop of their matrix solver in assembly, patched it into the binary, verified I got the same results, and got a 40-70% speedup depending on workload.</p><p>Then I sent them a &quot;pull request&quot;.</p>

<p><span class="h-card" translate="no"><a href="https://ioc.exchange/@azonenberg" class="u-url mention">@<span>azonenberg</span></a></span> lol how did that come about? worked there, or just patched it in?</p>

<p><span class="h-card" translate="no"><a href="https://chaos.social/@gsuberland" class="u-url mention">@<span>gsuberland</span></a></span> See the line about AVX in the log file?</p><p>Yeah. That was me.</p>

<p><span class="h-card" translate="no"><a href="https://ioc.exchange/@azonenberg" class="u-url mention">@<span>azonenberg</span></a></span> I vaguely recall you talking about it before but I can&#39;t remember the details.</p>

<p><span class="h-card" translate="no"><a href="https://chaos.social/@gsuberland" class="u-url mention">@<span>gsuberland</span></a></span> Yeah.</p><p>I mean, I&#39;m not paying MSRP though... You&#39;ve heard about how I ended up getting a good deal right?</p>

<p><span class="h-card" translate="no"><a href="https://ioc.exchange/@azonenberg" class="u-url mention">@<span>azonenberg</span></a></span> ah, cool, thanks. I did wonder if it was a simulation thing. I&#39;ve still not managed to get my head around EM sims, I&#39;m hoping to get time to follow along with niconiconi&#39;s guide before too long (although I can&#39;t say I&#39;m looking forward to battling FreeCAD). shame Sonnet is just insanely pricey.</p>

<p><span class="h-card" translate="no"><a href="https://chaos.social/@gsuberland" class="u-url mention">@<span>gsuberland</span></a></span> Feedlines for the simulator, they&#39;re de-embedded but have to be present to make the ports work out.</p><p>Tl;dr you get weird results if you try to make a port that doesn&#39;t have ground on an adjacent layer to use as a reference. This is fine if you have a reference plane but if you&#39;re voiding the plane, adding a short feedline seems to usually be the easiest way to work around it.</p>