AIワークロードにGPUを使う理由

AI does the same math on millions of numbers. A GPU shines here because it runs huge numbers of those operations side by side.

A CPU has a few fast cores for varied tasks. A GPU trades that for thousands of simpler cores built for raw parallelism.

Training and inference are mostly matrix multiplies and element-wise ops. These are exactly the regular patterns a GPU loves.

Adding two large vectors is millions of independent additions. Each one can run on its own GPU thread with no waiting.

A GPU may start each task a touch slower, but it finishes a mountain of them together. You win on total throughput.

GPUs feed those cores with very wide, fast memory. High bandwidth keeps thousands of threads supplied with data.

The win is biggest when work is large and uniform. Tiny or branch-heavy jobs may run better on the CPU.

Mojo aims to write CPU and GPU code in one language. You express the parallel idea once and target the device that fits.

Python usually offloads to GPU libraries it cannot see inside. Mojo lets you write the fast kernel yourself, in readable code.

Picture one instruction handed to thousands of workers, each on its own slice of data. That is the GPU's core strength.

A GPU helps only if you keep it busy and fed. Poor data movement can erase the gain, so the workload shape matters.

You must decide which workloads truly benefit from a GPU.

GPUs trade few fast cores for thousands of simple ones, so large uniform tensor math runs in parallel for huge throughput. 🚀