andrewfayres commented on a change in pull request #11204: Scala inference
memory leak fix
URL: https://github.com/apache/incubator-mxnet/pull/11204#discussion_r194492750
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File path: scala-package/core/src/main/scala/org/apache/mxnet/FeedForward.scala
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@@ -230,8 +230,11 @@ class FeedForward private(
val padded = batch.pad
val realSize = batchSize - padded
for ((list, nd) <- outputs zip predExec.outputs) {
- list += nd.slice(0, realSize).copy()
+ val ndSliced = nd.slice(0, realSize)
+ list += ndSliced.copy()
+ ndSliced.dispose()
Review comment:
If we're getting an exception here something has gone very wrong. Most
likely the problem would be memory access/allocation and I'm not confident
dispose would work correctly under those conditions.
I'll make the change anyway because although I think it's unlikely to ever
help it definitely won't hurt and is a good practice to follow.
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