lebeg commented on a change in pull request #12485: [WIP]
test_ImageRecordIter_seed_augmentation flaky test fix
URL: https://github.com/apache/incubator-mxnet/pull/12485#discussion_r230322834
##########
File path: src/io/iter_image_recordio_2.cc
##########
@@ -518,6 +518,17 @@ inline unsigned
ImageRecordIOParser2<DType>::ParseChunk(DType* data_dptr, real_t
cv::Mat res;
rec.Load(blob.dptr, blob.size);
cv::Mat buf(1, rec.content_size, CV_8U, rec.content);
+
+ if (idx % 1000 == 0) {
+ if (param_.seed_aug.has_value()) {
+ LOG(INFO) << "aug seed: " << param_.seed_aug.value();
+ }
+ LOG(INFO) << "tid: " << tid << " idx: " << idx << " index: " <<
rec.image_index();
+ }
+ if (param_.seed_aug.has_value()) {
+ prnds_[tid]->seed(idx + param_.seed_aug.value());
Review comment:
I do not understand why seeds need to be reset all the time. The logic is a
bit obscure - the random generators are in the augmentor and get passed to the
iterator.
Anyway, what you could try to do (if not refactoring) is to seed all
generators in `DefaultImageAugmenter::Init`
[here](https://github.com/apache/incubator-mxnet/blob/master/src/io/image_aug_default.cc#L215)
or in a separate method (since the random generator is not passed in to
`Init`). I guess the interface `ImageAugmenter` would require a separate `seed`
method then that could be called sequentially (instead of openmp parallelized).
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