calflops 0.0.3

This package is designed to compute the theoretical amount of FLOPs(floating-point operations)、MACs(multiply-add operations) and Parameters in all various neural networks, such as Linear、 CNN、 RNN、 GCN、Transformer(Bert、LlaMA etc Large Language Model)，including any custom models via ```torch.nn.function.*``` as long as based on the Pytorch implementation.

calculate-flops.pytorch

This tool(calflops) is designed to compute the theoretical amount of FLOPs(floating-point operations)、MACs(multiply-add operations) and Parameters in all various neural networks, such as Linear、 CNN、 RNN、 GCN、Transformer(Bert、LlaMA etc Large Language Model)，including any custom models via torch.nn.function.* as long as based on the Pytorch implementation.

In addition, the implementation process of this package inspired by ptflops and deepspeed libraries, for which I am very grateful for their efforts, they are both very good work. Meanwhile this package also improves some aspects(more simple、more model support) based on them.

Install the latest version

From PyPI:

pip install calflops

And you also can download latest *.whl files from https://pypi.org/project/calflops/

pip install *.whl

Example

from calflops import calculate_flops

# Deep Learning Model, such as alexnet.
from torchvision import models

model = models.alexnet()
batch_size = 1
flops, macs, params = calculate_flops(model=model, 
                                      input_shape=(batch_size, 3, 224, 224))
print("alexnet FLOPs:%s   MACs:%s   Params:%s \n" %(flops, macs, params))
# alexnet FLOPs:1.43 GFLOPS   MACs:714.188 MMACs   Params:61.101 M


# Transformers Model, such as bert.
from transformers import AutoModel
from transformers import AutoTokenizer
batch_size = 1
max_seq_length = 128
model_name = "hfl/chinese-roberta-wwm-ext/"
model_save = "../pretrain_models/" + model_name
model = AutoModel.from_pretrained(model_save)
tokenizer = AutoTokenizer.from_pretrained(model_save)
flops, macs, params = calculate_flops_pytorch(model=model, 
                                              input_shape=(batch_size, max_seq_length),
                                              transformer_tokenizer=tokenizer)
print("bert(hfl/chinese-roberta-wwm-ext) FLOPs:%s   MACs:%s   Params:%s \n" %(flops, macs, params))
#bert(hfl/chinese-roberta-wwm-ext) FLOPs:22.363 GFLOPS   MACs:11.174 GMACs   Params:102.268 M 


# Large Languase Model, such as llama2-7b.
from transformers import LlamaTokenizer
from transformers import LlamaForCausalLM
batch_size = 1
max_seq_length = 128
model_name = "llama2_hf_7B"
model_save = "../model/" + model_name
model = LlamaForCausalLM.from_pretrained(model_save)
tokenizer = LlamaTokenizer.from_pretrained(model_save)
flops, macs, params = calculate_flops(model=model,
                                      input_shape=(batch_size, max_seq_length),
                                      transformer_tokenizer=tokenizer)
print("llama2(7B) FLOPs:%s   MACs:%s   Params:%s \n" %(flops, macs, params))
#llama2(7B) FLOPs:1.7 TFLOPS   MACs:850.001 GMACs   Params:6.738 B 

Concact Author

Author: MrYXJ

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