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jra101

420 karma · joined August 5, 2009

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jra101··on GPUs Go Brrr
You're blaming NVIDIA for Sam Altman's dumb idea?
jra101··on Full screen triangle optimization
NVIDIA has an OpenGL extension that does just that [1].

[1] https://registry.khronos.org/OpenGL/extensions/NV/NV_fill_re...

jra101··on Microbenchmarking Intel’s Arc A770
Have you tried reducing the register count in your FP32 FMA test by increasing the iteration count and reducing the number of values computed per loop?

Instead of computing 8 independent values, compute one with 8x more iterations:

    for (int i = 0; i < count * 8; i++) {
        v0 += acc * v0; 
    }
That plus inlining the iteration count so the compiler can unroll the loop might help get closer to SOL.
jra101··on Tesla’s ‘phantom braking’ problem is getting worse
This happens to me just using the adaptive cruise control, no Autopilot or FSD enabled and it's super annoying. Can happen on a completely empty road driving in a straight line.
jra101··on Nvidia Unveils 144-Core Grace CPU Superchip
PS4: ~117M sold in 9 years Switch: ~104M sold in 5 years

Switch is averaging 20M units/year and PS4 is averaging 13M units/year.

jra101··on Twitter makes it harder to choose the old reverse-chronological feed
Thankful that Tweetdeck still works and has never tried to switch me to a non-chronological feed.
jra101··on Apple M1 Ultra
They are referring to the GPU part of the chip. There are two separate GPU complexes on the die but from the software point of view, it is a single large GPU.
jra101··on Apple M1 support for TensorFlow 2.5 pluggable device API
Huh, I had no idea they used Vega 20 both as a codename and a product name. Confusing.
jra101··on Apple M1 support for TensorFlow 2.5 pluggable device API
Vega 20 should be ~13.8 TFLOPs (single precision): https://www.anandtech.com/show/13923/the-amd-radeon-vii-revi...
jra101··on Firefox 80
The handling of bookmarks is terrible in the latest Firefox. So bad that I can only assume the developers don't actually use bookmarks and just search for websites by name?
jra101··on Intel Xe-HP Graphics: Early Samples Offer 42 TFLOPs of FP32 Performance
Tile based Deferred Rendering came from PowerVR. Prior to moving to their own GPU architecture, Apple licensed various PowerVR designs.
jra101··on Show HN: 2D Graphics on Modern GPU
Defold might be an option.

https://www.defold.com/

jra101··on Nvidia GeForce GTX 1660 Ti 6GB Review
"Looking at the numbers, the GeForce GTX 1660 Ti delivers around 37% more performance than the GTX 1060 6GB at 1440p, and a very similar 36% gain at 1080p"
jra101··on AMD Radeon VII: High-End 7nm Vega Video Card
Perfect dies (64 CUs) get sold as a Radeon Instinct MI60 at a much higher price.
jra101··on Scrcpy – An app to display and control Android devices
This is awesome, worked perfectly.

Only downside is if you have swipe to unlock, I couldn't actually get the swipe up to trigger the password input screen.

jra101··on Intel will ship processors with integrated AMD graphics and memory
Intel integrated graphics are not executed by the CPU, there is an intel designed GPU on the same die as the CPU.

https://www.anandtech.com/show/9582/intel-skylake-mobile-des...

HBM is not exclusive to AMD, NVIDIA also ships GPUs using HBM (Tesla P100 and V100)

jra101··on iPhone 8
First Apple SoC using their own GPU design, no more PowerVR IP.
jra101··on Apple Teases Upcoming Space Gray iMac Pro, "the most powerful Mac ever"
That's a feature of the graphics card, AMDs new Vega GPU architecture.
jra101··on Volta: Advanced Data Center GPU
Gaming GPUs still more than 50% of revenue for NVIDIA:

http://www.anandtech.com/show/11361/nvidia-announces-earning...

jra101··on Visual Studio 2017 Launch [video]
Perfect, thank you.
jra101··on Visual Studio 2017 Launch [video]
What happen to Python support? It was supported in the release candidate.
jra101··on Nintendo announced Switch Dev kits are $500
Sounds like you are describing an NVIDIA Shield TV: https://www.nvidia.com/en-us/shield/shield-tv/
jra101··on Apple proposes new web 3D graphics API
Intel's drivers may be beta but official NVIDIA and AMD GPU drivers both fully support Vulkan on Windows.
jra101··on Apple proposes new web 3D graphics API
It is higher level than Vulkan as you don't need to allocate or manage GPU memory, the implementation handles that for you. You also don't need to worry about transitioning render surfaces between different states (D3D12 and Vulkan).

It does allow you to create pipeline state objects ahead of time like Vulkan and D3D12 but they only include a subset of state (shader + antialiasing state + color/depth attachment state). The rest of the state is set when recording the command buffer.

jra101··on Kodak Ektra
No mention of sensor size?
jra101··on iPhone 7
HTC One (M8), launched March 2014 can do this:

http://www.anandtech.com/show/7893/the-htc-one-m8-review/2

jra101··on Vulkan Tutorial
It's only ~50 lines of code to create a window:

http://pastebin.com/drrRJ6Kd

jra101··on Vulkan Tutorial
PFN_vkCreateDebugReportCallbackEXT dbgCreateDebugReportCallback = (PFN_vkCreateDebugReportCallbackEXT)vkGetInstanceProcAddr(instance, "vkCreateDebugReportCallbackEXT");
jra101··on Refined Twitter
They don't ask "do you like this?" anymore. They ask something like "show more like this?" and I'm afraid clicking No will remove tweets from people that happened to be in the "while you were away" section.
jra101··on Refined Twitter
None on desktop. Possibly due to uBlock?
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