[HN Gopher] Cooperative Vectors Introduction
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       Cooperative Vectors Introduction
        
       Author : JasperBekkers
       Score  : 41 points
       Date   : 2026-04-10 13:16 UTC (2 days ago)
        
 (HTM) web link (www.evolvebenchmark.com)
 (TXT) w3m dump (www.evolvebenchmark.com)
        
       | cubefox wrote:
       | They talk about three applications for the coming cooperative
       | vectors / linear algebra API: Neural Materials, Neural Radiance
       | Caching, Neural Texture Compression.
       | 
       | But what about already much more popular ML-based applications:
       | upscaling, frame generation, denoising? These are currently
       | vendor specific. E.g. DLSS is only supported on Nvidia GPUs.
       | Could these run on arbitrary DirectX 13 GPUs in the future by
       | using the new API?
       | 
       | Granted, GPU manufacturers would likely not be keen on getting
       | their tech on other platforms, but engine developers like Epic
       | would clearly want to use it if they come up with their own ML
       | upscalers, denoisers etc in the future.
        
         | atq2119 wrote:
         | It's sort of explained in the article, actually.
         | 
         | Upscaling and related applications are already supported by
         | cooperate _matrix_ ops. Those shaders /kernels run in
         | workgroups that operate on a tile of pixels at a time, so you
         | naturally get matrix-matrix operations. And yes, at least in
         | Vulkan, there has been cross-vendor support for those for a
         | while now.
         | 
         | Neural materials and similar applications often operate on a
         | single datum at a time, like in a pixel shader or a raytracing
         | shader.
         | 
         | Yes, the hardware still groups the threads of a pixel shader
         | together, but there is inherently more divergence. And so the
         | natural program representation tends to have matrix-vector
         | operations instead of matrix-matrix operations.
         | 
         | That's where cooperative vectors come in.
        
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       (page generated 2026-04-12 23:01 UTC)