exDM69

47 ms·

541.
by exDM69 8y ago
Yes. Working for a HW vendor catering to automotive and embedded customers. QNX is one of the five or so OSes we work with.
542.
by exDM69 8y ago
Bicycle helmet safety is one of those things that will never be accurately covered by statistics, because most cases where the helmet did its job don't end up in the stats as there are no significant injuries. In the only serious bike
543.
by exDM69 8y ago
I live in an European city 60 degrees northern latitude, and the bicycle season is more like 9 months out of the year. That can be extended to 10-11 months with a bit of clothing/gear and bicycling the whole year is not impossible eith
544.
by exDM69 8y ago
For the secondary rays for reflection, refraction and shadows. At one ray per pixel, you can only do the primary ray and find which triangle it hits. The exact same thing can be done with rasterization much faster and with equal results.
545.
by exDM69 8y ago
The switching isn't free. Waking up a thread to do just a few computation cycles (a few ray-aabb intersections) and then going back to sleep while waiting for the next node to be fetched from the memory is super inefficient. If there w
546.
by exDM69 8y ago
It is more like a texture unit than a shader core. Tree traversal is a pointer chasing problem, where the CPU/shader core executes a few instructions, then starts a memory load and then sits idle for tens or hundreds of clock cycles wa
547.
by exDM69 8y ago
Enumeration techniques can be really useful in surprising situations. I am working on a planetary terrain rendering system for a game about spaceflight. The technique is based on conforming quadtrees but at no point there is an actual tree
548.
by exDM69 8y ago
It measures latency, not throughput. CPU or memory latency has not improved a lot, but throughput has through increased core count and instruction level parallelism. If you look at throughput per watt, the improvement is greater.
549.
by exDM69 8y ago
It's the speed of light staying constant despite best efforts of physicists and engineers. The distance between California and the Netherlands hasn't changed either.
550.
by exDM69 8y ago
Not too long ago, I was very close to having a "constant bearing, decreasing range" (CBDR) accident that the article is talking about. I failed to slow down adequately to a T-junction and almost drove straight in front of a truck,
551.
by exDM69 8y ago
Having lights on is good advice, especially since you tend not to notice the evening getting darker gradually. If you've been outside since daytime, by the time you realize to turn on the lights it's already quite dark. In my coun
552.
by exDM69 8y ago
It does make a difference especially to a beginner or a child. You might not have admin privileges at your school or your friends may not be able to install those tools so you can't show your work. But you can hack away on any computer
553.
by exDM69 8y ago
Windows is a platform I very seldom use. I had a few hour debugging job, so not worth installing the dev tools. I could just use the tools I always do.
554.
by exDM69 8y ago
Remote debugging and especially the extended-remote mode are worth knowing. That is usually my default workflow. The debugger (client and frontend) run on my desktop box while the app is running under gdbserver on an ARM board on the networ
555.
by exDM69 8y ago
JS is a bad language but it's the easiest environment to set up. Back in the day we started with Qbasic not because it is a good language but because that was easy to set up, we all had it and our friends had it and our school computer
556.
by exDM69 8y ago
Well this would mean collaboration between autonomous car manufacturers to build a common protocol. And this does not fit with their business model of getting massive investment on the grounds of potentially being the first player on the ma
557.
by exDM69 8y ago
Well TCP doesn't do collision avoidance, it's a link layer thing. And on Ethernet, it is collision detection on the shared medium. Wireless does avoidance due to the hidden terminal problem. Neither of these models is really ana
558.
by exDM69 8y ago
I agree that it's unacceptable that SIMD Vector extensions [0] are not standardized yet. However, they already work acceptably in GCC and Clang. There are only minor differences (e.g. __builtin_shufflevector) but it's usable with
559.
by exDM69 8y ago
Thanks for the link, that looks quite useful if compiler portability is needed. It's still more effort than option #2, but quite an acceptable trade-off.
560.
by exDM69 8y ago
On the contrary, compiler built-ins can make your code more portable (across different hw architectures) at the expense of some other compilers. GCC and Clang have mostly compatible compiler intrinsics and with those two compilers you can
561.
by exDM69 8y ago
Rasterization will always win for primary rays. It's the secondary rays that are interesting: reflections, soft shadows, ambient occlusion. There are hacks to do the same things with rasterization and screen space image tricks but they
562.
by exDM69 8y ago
Raytracing API is coming to Vulkan too. See here: http://on-demand.gputechconf.com/gtc/2018/presentation/s8521...
563.
by exDM69 8y ago
Repeat will only fix this particular case. If you did "dtf" and wanted "dff", repetition won't help. Kakoune is kinda like vim in visual mode (or block visual) with multiple cursors.
564.
by exDM69 8y ago
I don't know. Sounds like something related to blood pressure. Hunger affects hormones and that affects lots of things.
565.
by exDM69 8y ago
Just to clarify, we were only discussing monitoring and sensors in this subthread. Not closed loop pump systems. A sensor failure in closed loop is dangerous. I do not know how the control software detects and deals with this. I have no exp
566.
by exDM69 8y ago
How do you tell that the glucose reading measured from blood (the old way) is correct? You can't. The new method is not worse than the old in this respect. And again, you get at least 8 hours of history graphed on the display now. If i
567.
by exDM69 8y ago
Keto diet done wrong may have lethal or life changing consequences for T1D patients. Done right it might have positive effects but that is afaik not backed by research at the moment. Common sense in this case turned into potentially dangero
568.
by exDM69 8y ago
Yes, exactly. When you wake up in the morning, you can get a plot of the last night's glucose levels which you normally don't know about with discrete blood measurements. This allowed my SO to adjust evening eating and insulin dos
569.
by exDM69 8y ago
My SO has a continuous glucose monitoring, and as you say, the reading lags behind by 15-30 minutes compared to measurement from blood. But the blood measurement is a single, instantaneous value while the GCM meter shows the last 8 hour glu
570.
by exDM69 8y ago
No, it's not usable for dieting for healthy (non-diabetic) individuals because the pancreas will adjust glucose/insulin levels to a pretty flat level. When a non-diabetic person says "I need some blood sugar" when they&#

More ›