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AI and Memory Wall

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Memory Footprint and FLOPs for SOTA Models in CV/NLP/Speech

This is a repository with the data used for the AI and Memory Wall paper. We report the number of paramters, feature size, as well as the total FLOPs for inference/training for SOTA models in CV, Speech Learning, and NLP.

NLP Models

We mostly focus on calculating the different metrics for transformer models, starting from the original BERT FLOPs for training/inference, as well as its parameters and memory footprint. We then calculate the same metrics for different BERT variations as reported in the table below.

P.S: The total PFLOPs required to train each model, is calculated by using the setup reported in each paper.

Date Model Token Size #Params #Features Inference GFLOPs Training PFLOPs
09/10/2014 Seq2Seq 11,000
12/06/2017 Transformer 512 65M 77M 54 23,000
02/15/2018 ELMo 94M 3,300
10/11/2018 BERT Large 512 330M 230M 340 250,000
06/11/2018 GPT-1 512 110M 85M 96 57,000
02/14/2019 GPT-2 1024 1,500M 2,000M 3,400
07/26/2019 RoBERTa Large 512 1,500M 2,000M 3,400 4,300,000
08/17/2019 Megatron 1024 8,300M 4,700M 18,000 8,100,000
09/26/2019 ALBERT xxl 512 235M 450M 2,500 31,000,000
02/13/2020 Microsoft T-NLG 1024 17,000M 5,700M 36,000 28,000,000
03/23/2020 ELECTRA Large 128 330M 38M 79 3,100,000
05/28/2020 GPT-3 2048 175,000M 63,000M 740,000 310,000,000
06/30/2020 GShard 600,000M
06/20/2020 Baidu RecSys-C N/A 2,000,000M N/A ~O(0.1) N/A
06/20/2020 Baidu RecSys-E N/A 10,000,000M N/A ~O(0.1) N/A

CV Models

The table below reports the different metrics for various SOTA vision models, including the input image resolution, the number of parameters, the total inference GFLOPs, as well as the total PFLOPs required to train each model.

Date Model Input Resolution #Params Inference GFLOPs Training PFLOPs
06/01/2012 AlexNet 227 x 227 61M 1.4 460
09/04/2014 VGG-19 224 x 224 138M 39 11,000
12/02/2015 InceptionV3 299 x 299 24M 5.7 100,000
12/10/2015 ResNet152 224 x 224 55M 23 11,000
02/26/2016 InceptionV4 299 x 299 82M 24.6
10/07/2016 Xception 299 x 299 23M 17 450,000
11/16/2016 ResNeXt101(64x4d) 224 x 224 83M 31 12,000
12/03/2016 DenseNet201 224 x 224 20M 8.9 2,800

Memory Breakdown

The table below report the breakdown of memory required to train different SOTA models throughout the years. These include the total memory required to store the parameters, the memory footrpint associated with the optimization algorihtm, as well as the activation/feature memory.

Year Model Input Resolution (Sentence length) Batch Size Params Memory Optimizer Memory Activation Memory Total Memory
2012 AlexNet 227 x 227 128 0.23 GB 0.23 GB 0.71 GB 1.71 GB
2014 VGG19 224 x 224 64 0.54 GB 0.54 GB 4.64 GB 5.72 GB
2015 ResNet152 224 x 224 32 0.22 GB 0.22 GB 5.14 GB 5.58 GB
2016 DenseNet201 224 x 224 32 0.07 GB 0.07 GB 6.04 GB 6.18 GB
2016 ResNeXt101 (64x4d) 224 x 224 32 0.31 GB 0.31 GB 7.34 GB 7.96 GB
2017 Transformer Big (WMT) 512 6 1.02 GB 2.04 GB 11.78 GB 14.84 GB
2018 BERT Large 512 16 1.32 GB 2.64 GB 14.38 GB 18.34 GB
2019 GPT-2 2014 1 5.86 GB 11.62 GB 8.63 GB 26.21 GB

Acknowledgments

We appreciate it if you would please cite the following paper if you found the library useful for your work:

Gholami A, Yao Z, Kim S, Mahoney MW, Keutzer K. AI and Memory Wall. RiseLab Medium Blog Post, University of Califonia Berkeley, 2021, March 29.
@article{gholami2020ai_and_memory_wall,
  title={AI and Memory Wall},
  author={ Gholami, Amir and Yao, Zhewei and Kim, Sehoon and Hooper, Coleman and Mahoney, Michael W, and Keutzer, Kurt},
  journal={IEEE Micro Journal},
  year={2024}
}
Open Source Agenda is not affiliated with "Ai And Memory Wall" Project. README Source: amirgholami/ai_and_memory_wall

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