[Swift-user] execution error

[Michael Wilde]

Hi Sheri,

Can you point us to the entire log file?

Does it happen repeatedly? Same script, same point? Or sporadically?

Thanks,

- Mike

----- Original Message -----
> From: "Sheri Mickelson" <mickelso at mcs.anl.gov>
> To: swift-user at ci.uchicago.edu
> Sent: Friday, March 16, 2012 1:05:12 PM
> Subject: [Swift-user] execution error
> Hi,
> 
> I'm seeing this error message when I'm trying to execute a Swift
> script:
> 
> Execution failed:
> First operand is null
> 
> Here's the information from the log file:
> 
> 2012-03-16 11:54:58,725-0600 DEBUG VDL2ExecutionContext First operand
> is null
> First operand is null
> 
> at org.griphyn.vdl.karajan.lib.Operators.vdlop_eq(Operators.java:181)
> at sun.reflect.GeneratedMethodAccessor3.invoke(Unknown Source)
> at
> sun
> .reflect
> .DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:
> 43)
> at java.lang.reflect.Method.invoke(Method.java:616)
> at
> org
> .globus
> .cog
> .karajan
> .workflow
> .nodes.functions.FunctionsCollection.function(FunctionsCollection.java:
> 82)
> at
> org
> .globus
> .cog
> .karajan
> .workflow.nodes.functions.AbstractFunction.post(AbstractFunction.java:
> 27)
> at
> org
> .globus
> .cog
> .karajan
> .workflow
> .nodes
> .AbstractSequentialWithArguments
> .futureModified(AbstractSequentialWithArguments.java:208)
> at org.griphyn.vdl.karajan.DSHandleFutureWrapper
> $1.run(DSHandleFutureWrapper.java:63)
> at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:
> 471)
> at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
> at java.util.concurrent.FutureTask.run(FutureTask.java:166)
> at
> java
> .util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:
> 1110)
> at java.util.concurrent.ThreadPoolExecutor
> $Worker.run(ThreadPoolExecutor.java:603)
> at java.lang.Thread.run(Thread.java:636)
> 
> 
> I'm having trouble finding the bug in my Swift code. What type of
> error usually causes this message?
> 
> Thanks, Sheri
> _______________________________________________
> Swift-user mailing list
> Swift-user at ci.uchicago.edu
> https://lists.ci.uchicago.edu/cgi-bin/mailman/listinfo/swift-user

-- 
Michael Wilde
Computation Institute, University of Chicago
Mathematics and Computer Science Division
Argonne National Laboratory