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[Scala/Java] Remove unnecessary data slicing #17544

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Feb 11, 2020
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[Scala/Java] Remove unnecessary data slicing #17544

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2 changes: 1 addition & 1 deletion scala-package/core/src/main/scala/org/apache/mxnet/module/DataParallelExecutorGroup.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -33,7 +33,7 @@ private object DataParallelExecutorGroup {
majorAxis: Seq[Int]): Unit = {
for (((dSrc, dTargets), axis) <- data zip targets zip majorAxis) {
for (((sliceIdxStart, sliceIdxStop), dDst) <- dTargets) {
if (axis >= 0) {
if (axis >= 0 && (sliceIdxStart > 0 || sliceIdxStop < dSrc.shape(axis))) {
// copy slice
val shape = dSrc.shape
val begin = Array.fill(shape.length)(0)
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