Github user thvasilo commented on a diff in the pull request:
https://github.com/apache/flink/pull/1587#discussion_r51910120
--- Diff:
flink-libraries/flink-ml/src/main/scala/org/apache/flink/ml/optimization/GradientDescent.scala
---
@@ -192,10 +190,18 @@ abstract class GradientDescent extends
IterativeSolver {
(left, right) =>
val (leftGradVector, leftCount) = left
val (rightGradVector, rightCount) = right
- // Add the left gradient to the right one
- BLAS.axpy(1.0, leftGradVector.weights, rightGradVector.weights)
+
+ // make the left gradient dense so that the following reduce
operations (left fold) reuse
+ // it. This strongly depends on the underlying implementation of
the ReduceDriver
--- End diff --
Hey @tillrohrmann could you explain what you mean by "strongly depends on
the underlying implementation of the ReduceDriver"?
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at [email protected] or file a JIRA ticket
with INFRA.
---
