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Theoretical TFLOPS ≠ Real-world Performance

Testing Theoretical Maximum FLOPS on GPUs

This project aims to measure the theoretical maximum FLOPS (Floating Point Operations Per Second) achievable on various GPU models. Please see the original work by Stas Bekman.

Key Features

  1. Optimized Search: Unlike the original implementation which uses a brute force approach, this version leverages Optuna for efficient parameter optimization.

  2. Visualization: Optuna provides insightful visualizations of the optimization process:

    Optuna Optimization Visualization Optuna Optimization Visualization

  3. Data Collection: An optional feature allows submitting results to a remote API for data collection and analysis.

Stats

GPU Model Best Shape (MxNxK) TFLOPS
NVIDIA RTX 4000 SFF Ada Generation 2304x5120x1536 59.0
NVIDIA A10G 20480x18112x19712 69.7
NVIDIA GeForce RTX 3090 5248x15040x1024 78.0
NVIDIA RTX 4000 Ada Generation 14464x5312x20480 82.7
NVIDIA GeForce RTX 3090 Ti 10752x15488x10752 86.0
NVIDIA L4 1024x6016x1792 91.4
NVIDIA RTX A5000 17856x17024x3584 93.9
Tesla V100-SXM2-32GB 17216x20480x4096 94.0
Tesla V100-SXM2-16GB 2048x17920x1216 96.1
Radeon RX 7900 XTX 11008x3392x9216 113.3
DCU K100_AI 9344x3968x6592 126.3
NVIDIA RTX A6000 9856x12480x13248 131.2
AMD Instinct MI210 17536x7360x2304 142.8
NVIDIA L40 3712x2624x11136 170.3
NVIDIA GeForce RTX 4090 14336x4096x4096 178.8
NVIDIA L40S 4416x3776x3072 252.0
NVIDIA RTX 6000 Ada Generation 2624x5632x3328 278.5
NVIDIA A100 PCIe 2304x5120x1536 256.4
NVIDIA A100 SXM 6912x16384x2048 267.9
NVIDIA H100 NVL* 2560x2176x8192 488.5
NVIDIA H100 PCIe 6912x16384x2048 499.5
AMD Instinct MI300X 4096x8448x4864 788.2
NVIDIA H100 SXM 96GB 16896x15680x1024 807.1
NVIDIA H100 SXM 80GB 6144x17920x2816 821.2
NVIDIA GH200 96GB 7616x17664x4480 852.5
NVIDIA GH200 144G HBM3e 7616x17664x4480 853.8

*for H100 NVL we are only using a single card as we don't support multi-gpu

Install

# For a faster and smoother installation experience, we recommend using `uv`, an extremely fast Python package installer written in Rust.
# It's a seamless drop-in replacement for pip, so you don't have to worry about compatibility.
# You can easily install it with: 
pip install uv
git clone https://github.com/mag-/gpu_benchmark
cd gpu_benchmark
uv venv
source .venv/bin/activate
uv pip install -r requirements.txt
./mamf-finder.py

TODO:

Acknowledgements:

Thanks to Bernhard from GPTshop.ai for giving me access to GH200

Special thanks to Stas Bekman for the original implementation and research.