Add use_cudnn config in yaml #41368
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Add use_cudnn config in yaml #41368
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phlrain approved these changes Apr 4, 2022
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Describe
Yaml配置中增加对cudnn kernel选择的支持，配置示例如下：
use_cudnn的配置为一个字符串形式的条件表达式，也可直接使用true或false，未配置时默认为false。
上述示例中表示在
FLAGS_conv2d_disable_cudnn == false这个条件满足时会在计算中优先选择cudnn的kernel。