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7/19/2026

Building a Deep Learning Framework in C++ and CUDA: Benchmarking Against PyTorch
Original: I Built a Deep Learning Framework from Scratch in C++ and CUDA (And Beat PyTorch's Speed Multiple Run)
Short summary
A developer built Aakaar, a deep learning framework from scratch in C++ and CUDA with a Python wrapper, featuring 18 loss modules and 11 custom optimizers with manual memory management. Benchmarked against PyTorch on EMNIST over 5 epochs, Aakaar achieved 127.76s (83.30% acc) vs PyTorch's 131.23s (82.55% acc), edging out PyTorch by bypassing Python runtime overhead. The framework is open-source and the author seeks feedback from systems engineering and AI infrastructure communities.
- •Built Aakaar, a C++/CUDA deep learning framework with Python wrapper from scratch
- •Benchmarked against PyTorch on EMNIST: 127.76s vs 131.23s with comparable accuracy
- •Key challenge was manual memory contiguity management during backpropagation without autograd
Generated with AI, which can make mistakes.
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