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Talk:GPU

439 bytes added, 21:29, 27 April 2021
CPW GPU article: new section
== AMD architectures ==
 
My own conclusions are:
 
* TeraScale has VLIW design.
* GCN has 16 wide SIMD, executing a Wavefront of 64 threads over 4 cycles.
* RDNA has 32 wide SIMD, executing a Wavefront:32 over 1 cycle and Wavefront:64 over two cycles.
 
[[User:Smatovic|Smatovic]] ([[User talk:Smatovic|talk]]) 10:16, 22 April 2021 (CEST)
 
== Nvidia architectures ==
== SIMD + Scalar Unit ==
According to AMD papers It seems every SIMD unit has one scalar uniton GPU architectures, Nvidia seems to have SFUs, executing things like branch-conditions or special function unitsfunctions the SIMD ALUs are not capable of.
[[User:Smatovic|Smatovic]] ([[User talk:Smatovic|talk]]) 1120:4721, 18 22 April 2021 (CEST)
== embedded CPU controller ==
It is not documented in the white paperswhitepapers, but it seems that every discrete GPU has an embedded CPU controller (e.g. Nvidia Falcon) who (speculation) launches the kernels.
[[User:Smatovic|Smatovic]] ([[User talk:Smatovic|talk]]) 1110:4836, 18 22 April 2021 (CEST) == AMD architectures ==
AMD has some kind of NDA in their newest whitepapers, so I will put this into the discussion section...my own conclusions are:== CPW GPU article ==
* TeraScale has VLIW design* GCN has 16 wide SIMDA suggestion of mine, executing a Wavefront keep this GPU article as an generalized overview of 64 threads over 4 cyclesGPUs, with incremental updates for different frameworks and architectures.* RDNA has 32 wide SIMDGPUs and GPGPU is a moving target with different platforms offering new feature sets, better open own articles for things like GPGPU, SIMT, CUDA, ROCm, executing a Wavefront:32 over 1 cycle oneAPI, Metal or simply link to Wikipedia containing the newest specs and Wavefront:64 over two cyclesinfos.
[[User:Smatovic|Smatovic]] ([[User talk:Smatovic|talk]]) 1021:1629, 22 27 April 2021 (CEST)
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