self.state[‘target‘] = self.state[‘target‘].cuda(async=True)

target = target.cuda(async=True)  SyntaxError: invalid syntax

针对此错误是由于python3.7丢弃了async，改为non_blocking了，将对应的async改为non_blocking即可

Reference:(28条消息) target = target.cuda(async=True)  SyntaxError: invalid syntax_努力的小胡同学的博客-CSDN博客