Matthias Boehm created SYSTEMML-1882:
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Summary: Perftest: Kmeans shows different behavior compared to
previous releases
Key: SYSTEMML-1882
URL: https://issues.apache.org/jira/browse/SYSTEMML-1882
Project: SystemML
Issue Type: Bug
Reporter: Matthias Boehm
The current SystemML master shows different convergence behavior on the
perftest Kmeans scenarios. Triggered by significantly increased execution
times, a comparison with 0.14 showed the following output (note the different
number of iterations):
With SystemML 0.14
{code}
Run 1, Iteration 1: Terminated with code = 3, Centroid WCSS =
1.1884874830960146E11
Run 3, Iteration 2: Terminated with code = 1, Centroid WCSS =
1.1836165397662901E11
Run 2, Iteration 2: Terminated with code = 1, Centroid WCSS =
1.1836165397662901E11
Run 7, Iteration 2: Terminated with code = 1, Centroid WCSS =
1.1836165397662901E11
Run 6, Iteration 2: Terminated with code = 1, Centroid WCSS =
1.1836165397662901E11
Run 9, Iteration 2: Terminated with code = 1, Centroid WCSS =
1.1836165397662901E11
Run 8, Iteration 2: Terminated with code = 1, Centroid WCSS =
1.1836165397662901E11
Run 4, Iteration 2: Terminated with code = 1, Centroid WCSS =
1.1836165397662901E11
Run 5, Iteration 2: Terminated with code = 1, Centroid WCSS =
1.1836165397662901E11
Run 10, Iteration 2: Terminated with code = 1, Centroid WCSS =
1.1836165397662901E11
{code}
With SystemML master:
{code}
Run 8, Iteration 12: Terminated with code = 1, Centroid WCSS =
1.0897515693466766E11
Run 4, Iteration 14: Terminated with code = 1, Centroid WCSS =
1.0900183622869571E11
Run 1, Iteration 15: Terminated with code = 1, Centroid WCSS =
1.0892913262046584E11
Run 2, Iteration 16: Terminated with code = 1, Centroid WCSS =
1.0893145533814377E11
Run 6, Iteration 17: Terminated with code = 1, Centroid WCSS =
1.0881596327984634E11
Run 3, Iteration 17: Terminated with code = 1, Centroid WCSS =
1.0910103829718127E11
Run 7, Iteration 20: Terminated with code = 1, Centroid WCSS =
1.089467832141638E11
Run 10, Iteration 20: Terminated with code = 2, Centroid WCSS =
1.0873719552339151E11
Run 5, Iteration 20: Terminated with code = 2, Centroid WCSS =
1.0891758743999176E11
Run 9, Iteration 20: Terminated with code = 2, Centroid WCSS =
1.089222095610236E11
{code}
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