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add a big picture scheme for comp arch

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Tiziano Zito 2025-08-15 19:29:42 +02:00
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architecture/README.md
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@ -64,6 +64,8 @@
- temporal and spacial locality of data - temporal and spacial locality of data
- The gory details about the memory hierarchy: [What Every Programmer Should Know About Memory](https://www.akkadia.org/drepper/cpumemory.pdf) by the notorious Ulrich Drepper - The gory details about the memory hierarchy: [What Every Programmer Should Know About Memory](https://www.akkadia.org/drepper/cpumemory.pdf) by the notorious Ulrich Drepper
![Computer architecture - big picture](comp_architecture_big_picture.svg)
# …and what about the GPU? # …and what about the GPU?
![GPU vs CPU architecture](GPUvsCPU-architecture.png) ![GPU vs CPU architecture](GPUvsCPU-architecture.png)
- A GPU has many (in the order of hundreds) SIMT (single instruction, multiple thread) cores, so called SMs (Streaming Multiprocessors), each one with local L1 and shared L2 caches, and shared RAM (due to to the high parallelism, with huge bandwidth, in the order of ~1TB/s) - A GPU has many (in the order of hundreds) SIMT (single instruction, multiple thread) cores, so called SMs (Streaming Multiprocessors), each one with local L1 and shared L2 caches, and shared RAM (due to to the high parallelism, with huge bandwidth, in the order of ~1TB/s)

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