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Posted to dev@hama.apache.org by "Hudson (JIRA)" <ji...@apache.org> on 2008/12/11 11:47:47 UTC

[jira] Commented: (HAMA-134) We don't need to fill C with zeros

    [ https://issues.apache.org/jira/browse/HAMA-134?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12655600#action_12655600 ] 

Hudson commented on HAMA-134:
-----------------------------

-1 overall.  Here are the results of testing the latest attachment 
http://issues.apache.org/jira/secure/attachment/12395819/HAMA-134.patch
against trunk revision 725570.

    @author +1.  The patch does not contain any @author tags.

    tests included -1.  The patch doesn't appear to include any new or modified tests.
                        Please justify why no tests are needed for this patch.

    javadoc +1.  The javadoc tool did not generate any warning messages.

    javac +1.  The applied patch does not generate any new javac compiler warnings.

    release audit +1.  The applied patch does not generate any new release audit warnings.

    findbugs +1.  The patch does not introduce any new Findbugs warnings.

    core tests +1.  The patch passed core unit tests.

Test results: http://hudson.zones.apache.org/hudson/job/Hama-Patch/129/testReport/
Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Hama-Patch/129/artifact/trunk/build/reports/findbugs/newPatchFindbugsWarnings.html
Checkstyle results: http://hudson.zones.apache.org/hudson/job/Hama-Patch/129/artifact/trunk/build/test/checkstyle-errors.html
Console output: http://hudson.zones.apache.org/hudson/job/Hama-Patch/129/console

This message is automatically generated.

> We don't need to fill C with zeros
> ----------------------------------
>
>                 Key: HAMA-134
>                 URL: https://issues.apache.org/jira/browse/HAMA-134
>             Project: Hama
>          Issue Type: Sub-task
>    Affects Versions: 0.1.0
>            Reporter: Edward J. Yoon
>             Fix For: 0.1.0
>
>         Attachments: HAMA-134.patch
>
>
> Also, let's create/use/return the 'new SubMatrix' directly.
> ----
>  public SubMatrix mult(SubMatrix b) {
>    double[][] C = new double[this.getRows()][b.getColumns()];
>    for (int i = 0; i < this.getRows(); i++) {
>      Arrays.fill(C[i], 0);
>    }
>    for (int i = 0; i < this.getRows(); i++) {
>      for (int j = 0; j < b.getColumns(); j++) {
>        for (int k = 0; k < this.getColumns(); k++) {
>          C[i][j] += this.get(i, k) * b.get(k, j);
>        }
>      }
>    }
>    return new SubMatrix(C);

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