Thanks for your detailed reply. I did some coding <https://github.com/apache/systemml/compare/master...chamathabeysinghe:SYSTEMML-2159?diff=split&name=SYSTEMML-2159> [1] for this issue SYSTEMML-2159 to extend test cases for FA & FNR . I got a problem regarding success criteria's, "generating at least one fused operator" condition, I think this means I have to look into stats of Heavy hitter instructions and check if there are any fused operators. (my guess is uamin and uamax are the operators what I have to look for, but I am not sure about this because I don't know the meaning of these instructions).
Please help me to clarify this. If my approach is correct I could send a PR after fixing tests for other algorithms. Thanks. Regards, Chamath [1] https://github.com/apache/systemml/compare/master...chamathabeysinghe:SYSTEMML-2159?diff=split&name=SYSTEMML-2159 On Tue, Feb 27, 2018 at 1:54 AM, Matthias Boehm <mboe...@gmail.com> wrote: > ---------- Forwarded message ---------- > From: Matthias Boehm <mboe...@gmail.com> > Date: Mon, Feb 26, 2018 at 11:59 AM > Subject: Re: Extending Codegen algorithm tests for heuristics > To: Chamath Abeysinghe <abeysinghecham...@gmail.com> > > > great - thanks for taking this over Chamath. > > In general, I would recommend to use this task to explore SystemML a > little. For example, take one of the codegen algorithm tests from > org.apache.sysml.test.integration.functions.codegenalg (e.g., > AlgorithmL2SVM) and pass different flags such as -stats, -explain, -explain > recompile_hops, -explain recompile_runtime to programArgs and try to > understand the output. If you come over specific questions, please just > ask. > > To answer your detailed questions: > > 1) We recently added a code generation framework that automatically > identifies opportunities for fused operators and subsequently generates > code for these operators. A major part is the selection of fusion plans, > for which we provide heuristics and a cost-based optimizer. By default (and > thus also in our testsuite), we use the cost-based optimizer, but it would > be good regularly test the heuristics as well. > > 2) You can configure the used optimizer in your SystemML-config.xml file as > follows: > <sysml.codegen.optimizer>fuse_all</sysml.codegen.optimizer> > Valid alternatives are: fuse_all, fuse_no_redundancy, fuse_cost_based, and > fuse_cost_based_v2 (default). You can provide alternative config xml files > and switch them dynamically via getConfigTemplateFile. > > 3) Similar to the existing tests, it needs to (1) run without errors, (2) > produce correct results as compared to R, and (3) generate at least one > fused operator. > > Regards, > Matthias > > On Mon, Feb 26, 2018 at 6:54 AM, Chamath Abeysinghe < > abeysinghecham...@gmail.com> wrote: > > > Hi All, > > As per the guidelines given to GSoC students, I would like to work on the > > SYSTEMML-2159 [1] issue as a starting point. But I don't understand the > > background of the issue. Can someone help me with understanding the > context > > of this issue? > > > > Few problems I got are, > > > > 1) What are fusion heuristics, fuse-all and fuse-no-redundancy? > > 2) Can I pass those heuristic related configurations as args to execute > > DMLScript? > > 3) What is the success criteria for a test that use those heuristics? > > > > Thank you in advance > > > > Regards, > > Chamath > > > > [1] https://issues.apache.org/jira/browse/SYSTEMML-2159 > > > > -- > > Chamath Abeysinghe > > Department of Computer Science and Engineering > > University of Moratuwa > > <https://www.facebook.com/chamath.abeysinghe.3> [image: > > https://www.linkedin.com/in/kaushalya-gayan-batawala- > bbb5927a?trk=hp-identity-name] > > <https://lk.linkedin.com/in/chamathabeysinghe> > > Mobile : +94752930548 > > > -- Chamath Abeysinghe Department of Computer Science and Engineering University of Moratuwa <https://www.facebook.com/chamath.abeysinghe.3> [image: https://www.linkedin.com/in/kaushalya-gayan-batawala-bbb5927a?trk=hp-identity-name] <https://lk.linkedin.com/in/chamathabeysinghe> Mobile : +94752930548
