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Posted to issues@hivemall.apache.org by "Makoto Yui (JIRA)" <ji...@apache.org> on 2018/02/06 09:43:00 UTC

[jira] [Created] (HIVEMALL-169) Bytecode-based Stackmachine for DecisionTree models

Makoto Yui created HIVEMALL-169:
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             Summary: Bytecode-based Stackmachine for DecisionTree models
                 Key: HIVEMALL-169
                 URL: https://issues.apache.org/jira/browse/HIVEMALL-169
             Project: Hivemall
          Issue Type: Improvement
            Reporter: Makoto Yui


Currently, Hivemall supports word-code based Stack Machine evaluation is supported.

Bytecode-based StackMachine improves CPU L2 cache hit ratio and model evaluation performance.

[https://github.com/apache/incubator-hivemall/blob/master/core/src/main/java/hivemall/smile/vm/StackMachine.java]

Use Java bytecode or not is a discussion issue. [Maximum method length issue|https://issues.apache.org/jira/browse/SPARK-22772] exists.



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