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Posted to issues@systemml.apache.org by "Nakul Jindal (JIRA)" <ji...@apache.org> on 2016/07/01 01:10:11 UTC
[jira] [Updated] (SYSTEMML-774) No check from LibMatrixDataGen for
thread safe SparseBlock
[ https://issues.apache.org/jira/browse/SYSTEMML-774?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Nakul Jindal updated SYSTEMML-774:
----------------------------------
Description:
The SparseBlock implementations SparseBlock{CSR,COO} are not thread safe.
When MatrixBlock.DEFAULT_SPARSEBLOCK is set to SparseBlock.Type.CSR, and a rand() method is used to create a sparse matrix, like so:
X = rand(rows=200, cols=10000, min=0, max=4, pdf="uniform", sparsity=0.3)
It crashes because LibMatrixDatagen.generateRandomMatrix(MatrixBlock, RandomMatrixGenerator, long[], Well1024a, long, int ) does not check if the underlying SparseBlock implementation isThreadSafe.
was:
The SparseBlock implementations SparseBlock{CSR,COO} are not thread safe.
When MatrixBlock.DEFAULT_SPARSEBLOCK is set to SparseBlock.Type.CSR, and a rand() method is used to create a sparse matrix, like so:
```
X = rand(rows=200, cols=10000, min=0, max=4, pdf="uniform", sparsity=0.3)
```
It crashes because ``LibMatrixDatagen.generateRandomMatrix(MatrixBlock, RandomMatrixGenerator, long[], Well1024a, long, int )`` does not check if the underlying SparseBlock implementation ``isThreadSafe``.
> No check from LibMatrixDataGen for thread safe SparseBlock
> ----------------------------------------------------------
>
> Key: SYSTEMML-774
> URL: https://issues.apache.org/jira/browse/SYSTEMML-774
> Project: SystemML
> Issue Type: Bug
> Components: Runtime
> Reporter: Nakul Jindal
>
> The SparseBlock implementations SparseBlock{CSR,COO} are not thread safe.
> When MatrixBlock.DEFAULT_SPARSEBLOCK is set to SparseBlock.Type.CSR, and a rand() method is used to create a sparse matrix, like so:
> X = rand(rows=200, cols=10000, min=0, max=4, pdf="uniform", sparsity=0.3)
> It crashes because LibMatrixDatagen.generateRandomMatrix(MatrixBlock, RandomMatrixGenerator, long[], Well1024a, long, int ) does not check if the underlying SparseBlock implementation isThreadSafe.
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