Mike Dusenberry created SYSTEMML-1621:
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Summary: `max(0, X)` fails with type mismatch
Key: SYSTEMML-1621
URL: https://issues.apache.org/jira/browse/SYSTEMML-1621
Project: SystemML
Issue Type: Bug
Reporter: Mike Dusenberry
Scenario: Compute the element-wise max of a matrix {{X}} and {{0}}.
Current behavior: {{max(0, X)}} fails, {{max(0.0, X)}} works, and {{max(X, 0)}}
works as well.
Desired behavior: {{max(0, X)}} should work.
How to reproduce: {{nn/layers/relu.dml::forward}} currently contains a {{max(X,
0)}} function call. When the tests
({{test/integration/scripts/nn/NNTest.java}} are run, everything works fine.
However, if this function is adjusted to be {{max(0, X)}}, the tests will fail
during parsing with the following error:
{code}
17/05/23 11:17:00 ERROR parser.StatementBlock: ERROR: ./nn/test/grad_check.dml
-- line 1729, column 2 -- for function two_layer_affine_l2_net_forward, return
variable aout value type of INT does not match value type in function signature
of DOUBLE and cannot safely cast double as int
17/05/23 11:17:00 ERROR api.DMLScript: Failed to execute DML script.
org.apache.sysml.parser.LanguageException: ERROR: ./nn/test/grad_check.dml --
line 1729, column 2 -- for function two_layer_affine_l2_net_forward, return
variable aout value type of INT does not match value type in function signature
of DOUBLE and cannot safely cast INT as DOUBLE
at
org.apache.sysml.parser.FunctionStatementBlock.validate(FunctionStatementBlock.java:155)
at
org.apache.sysml.parser.DMLTranslator.validateParseTree(DMLTranslator.java:133)
at org.apache.sysml.api.DMLScript.execute(DMLScript.java:758)
at org.apache.sysml.api.DMLScript.executeScript(DMLScript.java:506)
at org.apache.sysml.api.DMLScript.main(DMLScript.java:233)
Exception in thread "main" org.apache.sysml.api.DMLException:
org.apache.sysml.parser.LanguageException: ERROR: ./nn/test/grad_check.dml --
line 1729, column 2 -- for function two_layer_affine_l2_net_forward, return
variable aout value type of INT does not match value type in function signature
of DOUBLE and cannot safely cast INT as DOUBLE
at org.apache.sysml.api.DMLScript.executeScript(DMLScript.java:533)
at org.apache.sysml.api.DMLScript.main(DMLScript.java:233)
Caused by: org.apache.sysml.parser.LanguageException: ERROR:
./nn/test/grad_check.dml -- line 1729, column 2 -- for function
two_layer_affine_l2_net_forward, return variable aout value type of INT does
not match value type in function signature of DOUBLE and cannot safely cast INT
as DOUBLE
at
org.apache.sysml.parser.FunctionStatementBlock.validate(FunctionStatementBlock.java:155)
at
org.apache.sysml.parser.DMLTranslator.validateParseTree(DMLTranslator.java:133)
at org.apache.sysml.api.DMLScript.execute(DMLScript.java:758)
at org.apache.sysml.api.DMLScript.executeScript(DMLScript.java:506)
... 1 more
Failed to run SystemML. Exit code :256
{code}
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