remove the initialization of saved_mean and saved_variance for batch_norm op #33851
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limin2021
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PR types
Performance optimization
PR changes
OPs
Describe
remove the initialization of saved_mean and saved_variance for batch_norm op
ctest结果：
Test project /benchmark/bn-remove-eigenfill/Paddle/build
test 290
Start 290: test_batch_norm_op
1/2 Test 290: test_batch_norm_op ............... Passed 7.25 sec
test 291
Start 291: test_batch_norm_op_v2
2/2 Test 291: test_batch_norm_op_v2 ............ Passed 7.14 sec
The following tests passed:
test_batch_norm_op
test_batch_norm_op_v2
100% tests passed, 0 tests failed out of 2
Total Test time (real) = 14.50 sec
以fp32，NCHW格式为例，展示优化前后 batch_norm 算子的前向+反向的总时间情况。
benchmark 性能数据（单位：ms）如下：