walterddr commented on a change in pull request #9732: [FLINK-14153][ml] Add to
BLAS a method that performs DenseMatrix and SparseVector multiplication.
URL: https://github.com/apache/flink/pull/9732#discussion_r338807443
##########
File path:
flink-ml-parent/flink-ml-lib/src/main/java/org/apache/flink/ml/common/linalg/BLAS.java
##########
@@ -19,26 +19,59 @@
package org.apache.flink.ml.common.linalg;
+import org.apache.flink.util.Preconditions;
+
/**
* A utility class that provides BLAS routines over matrices and vectors.
*/
public class BLAS {
+
+ // For level-1 routines, we use Java implementation.
private static final com.github.fommil.netlib.BLAS NATIVE_BLAS =
com.github.fommil.netlib.BLAS.getInstance();
+
+ // For level-2 and level-3 routines, we use the native BLAS.
Review comment:
nit: use `/* */`
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