Chapel Language Blog

Transformers From Scratch in Chapel and C++

A pair of articles about writing Transformers in Chapel and C++, comparing to each other and PyTorch.

• Transformers From Scratch in Chapel and C++, Part 1

  Posted on November 20, 2025

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  An implementation of a transformer using Chapel, comparing to C++ and PyTorch

• Transformers From Scratch in Chapel and C++, Part 2

  Posted on December 12, 2025

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  Comparison of transformers in Chapel, C++, and PyTorch focusing on multi-threaded CPUs