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Benchmarking the pipeline performance of int8 model
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import time | |
import torch | |
import numpy as np | |
import argparse | |
from transformers import pipeline | |
parser = argparse.ArgumentParser(description='Benchmark pipeline runtime for int8 models') | |
parser.add_argument('--batch_size', default=1, type=int, help='batch_size for experiments') | |
parser.add_argument('--nb_runs', default=10, type=int, help='number of times for repeating experiments') | |
parser.add_argument('--nb_gpus', default=7, type=int, help='number of GPUs to use') | |
parser.add_argument('--seq_length', default=20, type=int, help='maximum number of tokens to generate') | |
parser.add_argument('--max_memory', default="30GB", type=str, help='Maximum memory to use for each GPU') | |
parser.add_argument('--load_8bit', action='store_true') | |
args = parser.parse_args() | |
NB_RUNS = args.nb_runs | |
BATCH_SIZE=args.batch_size | |
load_8bit = args.load_8bit | |
def get_input(): | |
input_test = ["test" for _ in range(BATCH_SIZE)] | |
return input_test | |
def run_pipeline(): | |
total_time = [] | |
for _ in range(NB_RUNS): | |
start = time.perf_counter() | |
_ = pipe(input_test) | |
end = time.perf_counter() | |
torch.cuda.synchronize() | |
total_time.append(end-start) | |
return total_time | |
def get_gpus_max_memory(max_memory, n_gpus): | |
assert n_gpus <= torch.cuda.device_count(), "You are requesting more GPUs than available GPUs" | |
max_memory = {i: max_memory for i in range(n_gpus)} | |
return max_memory | |
input_test = get_input() | |
mapping_gpu_memory = get_gpus_max_memory(args.max_memory, args.nb_gpus) | |
pipe = pipeline(model="bigscience/bloom", model_kwargs= {"device_map": "auto", "torch_dtype": torch.float16 if load_8bit else torch.bfloat16, "load_in_8bit": load_8bit, "max_memory":mapping_gpu_memory}, max_new_tokens=args.seq_length, batch_size=args.batch_size) | |
# Do a dummy run | |
_ = pipe(input_test) | |
total_time = run_pipeline() | |
print("Time elapsed: {} +- {}".format(np.mean(total_time), np.std(total_time))) |
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