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https://issues.apache.org/jira/browse/SYSTEMML-843?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15416270#comment-15416270
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Imran Younus commented on SYSTEMML-843:
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Yes, all these numbers are for 2500 examples of mnist data.
> leftIndex and cache release extremely slow
> ------------------------------------------
>
> Key: SYSTEMML-843
> URL: https://issues.apache.org/jira/browse/SYSTEMML-843
> Project: SystemML
> Issue Type: Bug
> Reporter: Imran Younus
> Attachments: tSNT.tar.gz
>
>
> I'm running the tSNE script in standalone mode with a subset of MNIST data
> (2500 points). I ran this with and without `-exec singlenode`. Here are the
> stats:
> (BTW, the same function implemented in python takes less than 10 sec!)
> -> with singlenode flag
> {code}
> ./bin/systemml scripts/staging/tSNE.dml -stats -nvargs
> X=/home/iyounus/workspace/tsne_python/mnist2500_X.txt Y=Y_out.txt C=C_out.txt
> 16/08/01 16:46:54 INFO api.DMLScript: SystemML Statistics:
> Total elapsed time: 109.667 sec.
> Total compilation time: 0.407 sec.
> Total execution time: 109.260 sec.
> Number of compiled MR Jobs: 0.
> Number of executed MR Jobs: 0.
> Cache hits (Mem, WB, FS, HDFS): 223692/0/0/1.
> Cache writes (WB, FS, HDFS): 80351/0/2.
> Cache times (ACQr/m, RLS, EXP): 0.289/0.015/85.192/0.043 sec.
> HOP DAGs recompiled (PRED, SB): 0/0.
> HOP DAGs recompile time: 0.007 sec.
> Functions recompiled: 1.
> Functions recompile time: 0.039 sec.
> Total JIT compile time: 4.924 sec.
> Total JVM GC count: 312.
> Total JVM GC time: 1.12 sec.
> Heavy hitter instructions (name, time, count):
> -- 1) tsne 109.202 sec 1
> -- 2) x2p 109.189 sec 1
> -- 3) leftIndex 106.728 sec 32136
> -- 4) tsmm 0.564 sec 1
> -- 5) exp 0.376 sec 8034
> -- 6) rangeReIndex 0.201 sec 40170
> -- 7) / 0.183 sec 24103
> -- 8) * 0.161 sec 16069
> -- 9) + 0.144 sec 22840
> -- 10) uak+ 0.106 sec 8036
> 16/08/01 16:46:54 INFO api.DMLScript: END DML run 08/01/2016 16:46:54
> {code}
> -> without singlenode flag
> {code}
> > ./bin/systemml scripts/staging/tSNE.dml -stats -nvargs
> > X=/home/iyounus/workspace/tsne_python/mnist2500_X.txt Y=Y_out.txt
> > C=C_out.txt
> 16/08/01 16:52:59 INFO api.DMLScript: SystemML Statistics:
> Total elapsed time: 127.290 sec.
> Total compilation time: 0.396 sec.
> Total execution time: 126.894 sec.
> Number of compiled MR Jobs: 1.
> Number of executed MR Jobs: 0.
> Cache hits (Mem, WB, FS, HDFS): 223693/0/0/1.
> Cache writes (WB, FS, HDFS): 80352/0/2.
> Cache times (ACQr/m, RLS, EXP): 0.421/0.016/100.974/0.041 sec.
> HOP DAGs recompiled (PRED, SB): 0/0.
> HOP DAGs recompile time: 0.009 sec.
> Functions recompiled: 1.
> Functions recompile time: 0.038 sec.
> Total JIT compile time: 4.835 sec.
> Total JVM GC count: 312.
> Total JVM GC time: 1.226 sec.
> Heavy hitter instructions (name, time, count):
> -- 1) tsne 126.426 sec 1
> -- 2) x2p 126.412 sec 1
> -- 3) leftIndex 123.982 sec 32136
> -- 4) exp 0.427 sec 8034
> -- 5) MR-Job_CSV_REBLOCK 0.412 sec 1
> -- 6) tsmm 0.308 sec 1
> -- 7) rangeReIndex 0.242 sec 40170
> -- 8) / 0.208 sec 24103
> -- 9) + 0.172 sec 22840
> -- 10) * 0.151 sec 16069
> 16/08/01 16:52:59 INFO api.DMLScript: END DML run 08/01/2016 16:52:59
> {code}
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