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https://issues.apache.org/jira/browse/SYSTEMML-824?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Niketan Pansare updated SYSTEMML-824:
-------------------------------------
    Description: 
The cellwise (matrix-matrix as well as matrix-scalar) operations take 
significant amount of time while training Lenet. Here are few ways to improve 
the performance of cell-wise operations:
1. Inject in-place updates [1] (saving on zero-ing out the matrix).
2. Fused cell-wise operations (as an example, recently added axpy operations: 
https://github.com/apache/incubator-systemml/commit/b584aecf6b3a1eb96ff83b78cc3ad7c7c6d15baa).
 
3. Parallelize cellwise operations (initial investigation need to be conducted 
before proceeding in this direction especially in sparse case: 
https://github.com/apache/incubator-systemml/blob/master/src/main/java/org/apache/sysml/runtime/matrix/data/LibMatrixBincell.java#L274).

[~nakul02] [~mwdus...@us.ibm.com] [~prithvi_r_s] [~mboehm7] [~reinwald]

Reference:
[1] http://www.diku.dk/hjemmesider/ansatte/torbenm/ICD/Register.pdf

  was:
The cellwise (matrix-matrix as well as matrix-scalar) operations take 
significant amount of time while training Lenet. Here are few ways to improve 
the performance of cell-wise operations:
1. Inject in-place updates [1] (saving on zero-ing out the matrix).
2. Fused cell-wise operations (as an example, recently added axpy operations). 
3. Parallelize cellwise operations (initial investigation need to be conducted 
before proceeding in this direction especially in sparse case: 
https://github.com/apache/incubator-systemml/blob/master/src/main/java/org/apache/sysml/runtime/matrix/data/LibMatrixBincell.java#L274).

[~nakul02] [~mwdus...@us.ibm.com] [~prithvi_r_s] [~mboehm7] [~reinwald]

Reference:
[1] http://www.diku.dk/hjemmesider/ansatte/torbenm/ICD/Register.pdf


> Improve the performance of binary cell-wise operations
> ------------------------------------------------------
>
>                 Key: SYSTEMML-824
>                 URL: https://issues.apache.org/jira/browse/SYSTEMML-824
>             Project: SystemML
>          Issue Type: Task
>            Reporter: Niketan Pansare
>
> The cellwise (matrix-matrix as well as matrix-scalar) operations take 
> significant amount of time while training Lenet. Here are few ways to improve 
> the performance of cell-wise operations:
> 1. Inject in-place updates [1] (saving on zero-ing out the matrix).
> 2. Fused cell-wise operations (as an example, recently added axpy operations: 
> https://github.com/apache/incubator-systemml/commit/b584aecf6b3a1eb96ff83b78cc3ad7c7c6d15baa).
>  
> 3. Parallelize cellwise operations (initial investigation need to be 
> conducted before proceeding in this direction especially in sparse case: 
> https://github.com/apache/incubator-systemml/blob/master/src/main/java/org/apache/sysml/runtime/matrix/data/LibMatrixBincell.java#L274).
> [~nakul02] [~mwdus...@us.ibm.com] [~prithvi_r_s] [~mboehm7] [~reinwald]
> Reference:
> [1] http://www.diku.dk/hjemmesider/ansatte/torbenm/ICD/Register.pdf



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