使用torch.cuda.empty_cache()删除一些不需要的变量代码示例如下：
try:
output = model(input)
except RuntimeError as exception:
if "out of memory" in str(exception):
print("WARNING: out of memory")
if hasattr(torch.cuda, 'empty_cache'):
torch.cuda.empty_cache()
else:
raise exception
测试的时候爆显存有可能是忘记设置no_grad
with torch.no_grad():
for ii,(inputs,filelist) in tqdm(enumerate(test_loader), desc='predict'):
if opt.use_gpu:
inputs = inputs.cuda()
if len(inputs.shape) < 4:
inputs = inputs.unsqueeze(1)
else:
if len(inputs.shape) < 4:
inputs = torch.transpose(inputs, 1, 2)
inputs = inputs.unsqueeze(1)
