From ec43a105e4a1f3b91ff77ec71a6f49a7501503af Mon Sep 17 00:00:00 2001
From: Yufei <annblessus@gmail.com>
Date: Tue, 29 Nov 2022 19:55:56 +0800
Subject: [PATCH] add speed test

---
 tools/analysis/speed_test.py | 86 ++++++++++++++++++++++++++++++++++++
 1 file changed, 86 insertions(+)
 create mode 100755 tools/analysis/speed_test.py

diff --git a/tools/analysis/speed_test.py b/tools/analysis/speed_test.py
new file mode 100755
index 0000000..fef9e2d
--- /dev/null
+++ b/tools/analysis/speed_test.py
@@ -0,0 +1,86 @@
+#!/usr/bin/env bash
+# Copyright (c) OpenMMLab. All rights reserved.
+import argparse
+import time
+
+import torch
+from mmcv import Config
+from mmcv.cnn import fuse_conv_bn
+from mmcv.parallel import MMDataParallel
+from mmcv.runner.fp16_utils import wrap_fp16_model
+
+from mmpose.datasets import build_dataloader, build_dataset
+from mmpose.models import build_posenet
+
+
+def parse_args():
+    parser = argparse.ArgumentParser(
+        description='MMPose benchmark a recognizer')
+    parser.add_argument('config', help='test config file path')
+    parser.add_argument('--bz', default=32, type=int, help='test config file path')
+    args = parser.parse_args()
+    return args
+
+
+def main():
+    args = parse_args()
+
+    cfg = Config.fromfile(args.config)
+
+    # Since we only care about the forward speed of the network
+    cfg.model.pretrained=None
+    cfg.model.test_cfg.flip_test=False
+    cfg.model.test_cfg.use_udp=False
+    cfg.model.test_cfg.post_process='none'
+
+    # set cudnn_benchmark
+    if cfg.get('cudnn_benchmark', False):
+        torch.backends.cudnn.benchmark = True
+
+    # build the dataloader
+    dataset = build_dataset(cfg.data.val)
+    data_loader = build_dataloader(
+        dataset,
+        samples_per_gpu=args.bz,
+        workers_per_gpu=cfg.data.workers_per_gpu,
+        dist=False,
+        shuffle=False)
+
+    # build the model and load checkpoint
+    model = build_posenet(cfg.model)
+    model = MMDataParallel(model, device_ids=[0])
+    model.eval()
+    
+    # get the example data
+    for i, data in enumerate(data_loader):
+        break
+
+    # the first several iterations may be very slow so skip them
+    num_warmup = 100
+    inference_times = 100
+
+    with torch.no_grad():
+        start_time = time.perf_counter()
+      
+        for i in range(num_warmup):
+            torch.cuda.synchronize()            
+            model(return_loss=False, **data)
+            torch.cuda.synchronize()
+        
+        elapsed = time.perf_counter() - start_time
+        print(f'warmup cost {elapsed} time')
+
+        start_time = time.perf_counter()
+        
+        for i in range(inference_times):
+            torch.cuda.synchronize()
+            model(return_loss=False, **data)
+            torch.cuda.synchronize()
+
+        elapsed = time.perf_counter() - start_time
+        fps = args.bz * inference_times / elapsed
+        print(f'the fps is {fps}')
+
+
+if __name__ == '__main__':
+    main()