Category: GPU

__global__

In the main code, the function is called like:

vec_add<<<blocks, threads(d_a, d_b, d_c, n);

This function runs on the GPU, executes many threads at the same time. Each thread runs the same code, but with difference IDs. This is SIMT: singe instruction, multiple threads.

1️⃣ What is a

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CUDA = NVIDIA-only, low-level, maximum control

wgpu = portable, safe-ish, modern GPU abstraction used by Rust

What is wgpu?

wgpu is a Rust library that exposes modern GPU features in a portable way.

Under the hood, it runs on:

• Vulkan (Linux, Windows)
• Metal (macOS)
• DirectX 12 (Windows)
• WebGPU

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