Const-me

54 ms·

751.
by Const-me 4y ago
Last couple times I used cloud VMs with ARM64 CPUs running some Linux. A systemd service to run asp-net only takes a few lines of text in the *.service file, like following: [Service] Type=simple ExecStart=/usr/bin&#
752.
by Const-me 4y ago
I agree with GP, and I think here on HN the opposite of your comment is true. People buy expensive laptops because they don't know how to adequately judge which ones ain’t worth more. Not just on HN, I’m observing same behavior among f
753.
by Const-me 4y ago
> The workload is branch rich so SIMD/SIMT is not possible Just because there’re many branches doesn’t mean SIMD/SIMT ain’t possible or too slow. I recently needed to solve a problem where I wanted to traverse a tree, computing
754.
by Const-me 4y ago
> You can construct the orthonormal vector by taking the cross product between our first bond, and an arbitrary unit vector. Arbitrary not gonna work. The cross product will sometimes be zero vector, and the algorithm will fail. The cros
755.
by Const-me 4y ago
Lately it’s mostly CAM/CAE and HPC stuff. Some of these projects are indeed using other languages, like C#, HLSL, CUDA C++, Python.
756.
by Const-me 4y ago
To be fair, in modern GL versions they fixed some of these things. In GLES 3.1 which I used a lot on Pi4 https://github.com/Const-me/Vrmac/ GPU vertex buffers and shaders worked fine, GLSL compiler in the drivers
757.
by Const-me 4y ago
About OpenGL, here’s a long post outlining some of the problems: https://softwareengineering.stackexchange.com/a/88055/25371 While not directly applicable to the Pi where there’s no Direct3D, the GL issues are pre
758.
by Const-me 4y ago
AFAIK in European Spanish the word is neutral, just an animal, nothing particularly wrong with the resemblance. Google’s HQ is in California. The state has a land border with Mexico and almost 40% of Hispanic and Latin population, predomina
759.
by Const-me 4y ago
Speaking of diversity, I wonder how many people from Mexico are working in management of Google? I mean cultural background, not ethnicity / DNA. I would be surprised to find there’s at least one. I don’t think they would have named th
760.
by Const-me 4y ago
> that's not common by any means Pretty common, I second the GP. > I reboot my iphone once a year. I wonder how many times per year the phone reboots by itself to install OS updates?
761.
by Const-me 4y ago
> In 100% of cases, just typing Ctrl+C, Ctrl+Z, etc, followed by 'r', 'e', 's', 'e', 't', enter seems to have always done the trick. Can confirm, these things helped me as well. Still, j
762.
by Const-me 4y ago
We do not have such a flawless model for CLIs. Command-line apps have their corner cases as well, and they fail too. Many CLI programs were designed in the assumption the display size never changes, like 80x25 characters. That's not tr
763.
by Const-me 4y ago
Here's how I did that https://github.com/Const-me/Vrmac/blob/master/Vrmac/Draw/VAA... Inexact but IMO pretty good still. With some modifications, the approach can be used in GLES2.
764.
by Const-me 4y ago
Skia is not GPU first. It was initially designed for CPU-only rendering, 3D GPU support was an afterthought. For that reason, the quality of that support ain’t great. AFAIK it only uses 3D GPU to compose layers.
765.
by Const-me 4y ago
On Windows, the graphics story is more or less OK. The OS includes Direct2D and DirectWrite user-facing APIs. It’s now possible to implement an equivalent on all modern platforms which have a 3D GPU. An open-source example in C# https:&#x2
766.
by Const-me 4y ago
I usually clean sunglasses by spraying alcohol and wiping with a paper towel. Pharmacies here sell that liquid in small plastic bottles with spray nozzle, the liquid contains 70% ethanol, 30% distilled water.
767.
by Const-me 4y ago
> there is an emerging consensus that the "new shiny thing" weapons haven't had nearly as much effect as anticipated I don't think there's a consensus. The things are all different: some underperform, some others
768.
by Const-me 4y ago
> Use: nvidia-smi -g {GPU_ID} -dm 0 I think I tried that a year ago, and it didn’t work. Documentation agrees, it says “GRID drivers redistributed by Azure do not work on non-NV series VMs like NCv2, NCv3” https://docs.microso
769.
by Const-me 4y ago
> flip the model from TCC to WDDM via nvidia-smi I’m not sure that’s legal. I think NV wants extra money, details there https://www.nvidia.com/content/dam/en-zz/Solutions/design-vi... > C++ AMP is
770.
by Const-me 4y ago
DirectCompute is pretty close to CUDA. When handled with care, it can do these compute-heavy pieces with similar performance. The main downside is the libraries: cuBLAS, cuFFT, and similar pieces of CUDA are manually optimized, and nVidia s
771.
by Const-me 4y ago
> they choose it because it works MS DirectCompute also works. Yet last time I checked, MS Azure didn’t support DirectCompute with their fast GPUs. These virtual machines come with TCC (Tesla Compute Cluster) driver which only supports C
772.
by Const-me 4y ago
Nice presentation. None of what was said is specific to CUDA. It’s the same thing in DirectCompute HLSL. Only the terminology is different: CUDA thread blocks are called thread groups in DirectCompute, warps are called waves, shared memory
773.
by Const-me 4y ago
> building a GPU-capable BLAS library is just a lot more work than one would think I made a few pieces when needed: dense and sparse matrices, conjugate gradient, householder QR decomposition, other things. Wasn’t terribly hard. I only n
774.
by Const-me 4y ago
> They seem to have taken a good chunk of Ukraine just this past week Only a minor one. Russians have taken some chunk in the East, they lost some other chunk on the South near Kherson, retreated from Snake Island in the black sea, unabl
775.
by Const-me 4y ago
> what does the standard library not have that you think forces you to write boilerplate? The streams from the standard library are broken beyond repair, I avoid them at all costs: https://www.moria.us/articles/iostr
776.
by Const-me 4y ago
Convection works because density of warm fluid is less than density of cold one. The gravity causes hot fluid to rise, and cold fluid to sink. For this reason, switching off the gravity stops the convection.
777.
by Const-me 4y ago
The hardware and modern OSes support large 2MB pages, and huge 1GB pages. They trim 1 or 2 levels from that tree, respectively. With huge pages a single node of that tree addresses 512GB of memory, for most practical applications you’re pre
778.
by Const-me 4y ago
> It’s the “load 5 bytes” and “store 5 bytes” that I don’t have a good solution for Strings in C are null terminated. You can avoiding loading exactly 5 bytes. For a string of length 4 load 4 bytes, for a string of length 5 load 6 bytes,
779.
by Const-me 4y ago
It's rarely a good idea to implement spin locks as an empty while() loop. Processors have a special instruction for the spinning, _mm_pause()
780.
by Const-me 4y ago
My favorite application is comparing vectors. Example in C++: // Compare 32 bytes for equality, with 2 AVX2 instructions inline bool equals( __m256i a, __m256i b ) { // When the vectors are equal, t

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