[Swift-devel] null pointer exception from nested loops

[Michael Wilde]

It seems not related to scale or Falkon.

It occurs when running on localhost (but on bgp) and when I cut all the 
loops down to a single iteration.

I'm still debugging.

On 3/17/09 4:07 PM, Michael Wilde wrote:
> I just expanded my oops protein folding script to add another level of 
> parameter sweep. This script is getting pretty complex now (at least, 
> for a swift script).
> 
> I got the following npe on my first two tries. Im going to start 
> debugging, but any clues as to the cause would be helpful.
> 
> The outer loops are:
> 
> main()
> {
>   string protein[] = readData(@arg("plist"));
>   string startTemp[] = ["10","20"];
>   string tempUpdate[] = ["1","2","3"];
> 
>   foreach p in protein {
>     foreach st in startTemp {
>       foreach tu in tempUpdate {
>         doRoundSet(p,st,tu);
>       }
>     }
>   }
> }
> 
> There are two levels of inner loops further down below doRoundSet().
> 
> The script, output, command line args and log are in:
> http://ww.ci.uchicago.edu/~wilde/swift3.tar.gz
> 
> I suspect it will take a while to narrow the cause to a simpler test 
> case thats easy tp reproduce without a lot of setup.
> 
> I'll try on a vanilla swift on local execution; this is on bgp with Falkon.
> 
> Thanks.
> 
> -- 
> 
> ...
> Progress:  uninitialized:1 Selecting site:2
> SwiftScript trace: T1af7, Round, 0, Sim, 7
> SwiftScript trace: T1af7, Round, 0, Sim, 2
> SwiftScript trace: T1af7, Round, 0, Sim, 8
> SwiftScript trace: T1af7, Round, 0, Sim, 0
> SwiftScript trace: T1af7, Round, 0, Sim, 5
> SwiftScript trace: T1af7, Round, 0, Sim, 9
> SwiftScript trace: T1af7, Round, 0, Sim, 1
> SwiftScript trace: T1af7, Round, 0, Sim, 6
> SwiftScript trace: T1af7, Round, 0, Sim, 3
> SwiftScript trace: T1af7, Round, 0, Sim, 4
> Ex098
> java.lang.NullPointerException
>     at 
> org.griphyn.vdl.karajan.lib.VDLFunction.leafFileName(VDLFunction.java:285)
>     at 
> org.griphyn.vdl.karajan.lib.VDLFunction.filename(VDLFunction.java:201)
>     at 
> org.griphyn.vdl.karajan.lib.VDLFunction.filename(VDLFunction.java:182)
>     at 
> org.griphyn.vdl.karajan.lib.swiftscript.FileName.function(FileName.java:19)
>     at org.griphyn.vdl.karajan.lib.VDLFunction.post(VDLFunction.java:67)
>     at 
> org.globus.cog.karajan.workflow.nodes.AbstractSequentialWithArguments.childCompleted(AbstractSequentialWithArguments.java:192) 
> 
>     at 
> org.globus.cog.karajan.workflow.nodes.Sequential.notificationEvent(Sequential.java:33) 
> 
>     at 
> org.globus.cog.karajan.workflow.nodes.FlowNode.event(FlowNode.java:332)
>     at 
> org.globus.cog.karajan.workflow.events.EventBus.send(EventBus.java:125)
>     at 
> org.globus.cog.karajan.workflow.events.EventBus.sendHooked(EventBus.java:99) 
> 
>     at 
> org.globus.cog.karajan.workflow.nodes.FlowNode.fireNotificationEvent(FlowNode.java:176) 
> 
>     at 
> org.globus.cog.karajan.workflow.nodes.FlowNode.complete(FlowNode.java:296)
>     at 
> org.globus.cog.karajan.workflow.nodes.FlowContainer.post(FlowContainer.java:58) 
> 
>     at 
> org.globus.cog.karajan.workflow.nodes.functions.AbstractFunction.post(AbstractFunction.java:46) 
> 
>     at 
> org.globus.cog.karajan.workflow.nodes.Sequential.startNext(Sequential.java:51) 
> 
>     at 
> org.globus.cog.karajan.workflow.nodes.Sequential.executeChildren(Sequential.java:27) 
> 
>     at 
> org.globus.cog.karajan.workflow.nodes.functions.AbstractFunction.executeChildren(AbstractFunction.java:40) 
> 
>     at 
> org.globus.cog.karajan.workflow.nodes.FlowContainer.execute(FlowContainer.java:63) 
> 
>     at 
> org.globus.cog.karajan.workflow.nodes.FlowNode.restart(FlowNode.java:233)
>     at 
> org.globus.cog.karajan.workflow.nodes.FlowNode.start(FlowNode.java:278)
>     at 
> org.globus.cog.karajan.workflow.nodes.FlowNode.controlEvent(FlowNode.java:391) 
> 
>     at 
> org.globus.cog.karajan.workflow.nodes.FlowNode.event(FlowNode.java:329)
>     at 
> org.globus.cog.karajan.workflow.FlowElementWrapper.event(FlowElementWrapper.java:227) 
> 
>     at 
> org.globus.cog.karajan.workflow.events.EventBus.send(EventBus.java:125)
>     at 
> org.globus.cog.karajan.workflow.events.EventBus.sendHooked(EventBus.java:99) 
> 
>     at 
> org.globus.cog.karajan.workflow.events.EventWorker.run(EventWorker.java:69)
> Execution failed:
>     java.lang.NullPointerException
>     at 
> org.griphyn.vdl.karajan.lib.VDLFunction.leafFileName(VDLFunction.java:285)
>     at 
> org.griphyn.vdl.karajan.lib.VDLFunction.filename(VDLFunction.java:201)
>     at 
> org.griphyn.vdl.karajan.lib.VDLFunction.filename(VDLFunction.java:182)
>     at 
> org.griphyn.vdl.karajan.lib.swiftscript.FileName.function(FileName.java:19)
>     at org.griphyn.vdl.karajan.lib.VDLFunction.post(VDLFunction.java:67)
>     at 
> org.globus.cog.karajan.workflow.nodes.AbstractSequentialWithArguments.childCompleted(AbstractSequentialWithArguments.java:192) 
> 
>     at 
> org.globus.cog.karajan.workflow.nodes.Sequential.notificationEvent(Sequential.java:33) 
> 
>     at 
> org.globus.cog.karajan.workflow.nodes.FlowNode.event(FlowNode.java:332)
>     at 
> org.globus.cog.karajan.workflow.events.EventBus.send(EventBus.java:125)
>     at 
> org.globus.cog.karajan.workflow.events.EventBus.sendHooked(EventBus.java:99) 
> 
>     at 
> org.globus.cog.karajan.workflow.nodes.FlowNode.fireNotificationEvent(FlowNode.java:176) 
> 
>     at 
> org.globus.cog.karajan.workflow.nodes.FlowNode.complete(FlowNode.java:296)
>     at 
> org.globus.cog.karajan.workflow.nodes.FlowContainer.post(FlowContainer.java:58) 
> 
>     at 
> org.globus.cog.karajan.workflow.nodes.functions.AbstractFunction.post(AbstractFunction.java:46) 
> 
>     at 
> org.globus.cog.karajan.workflow.nodes.Sequential.startNext(Sequential.java:51) 
> 
>     at 
> org.globus.cog.karajan.workflow.nodes.Sequential.executeChildren(Sequential.java:27) 
> 
>     at 
> org.globus.cog.karajan.workflow.nodes.functions.AbstractFunction.executeChildren(AbstractFunction.java:40) 
> 
>     at 
> org.globus.cog.karajan.workflow.nodes.FlowContainer.execute(FlowContainer.java:63) 
> 
>     at 
> org.globus.cog.karajan.workflow.nodes.FlowNode.restart(FlowNode.java:233)
>     at 
> org.globus.cog.karajan.workflow.nodes.FlowNode.start(FlowNode.java:278)
>     at 
> org.globus.cog.karajan.workflow.nodes.FlowNode.controlEvent(FlowNode.java:391) 
> 
>     at 
> org.globus.cog.karajan.workflow.nodes.FlowNode.event(FlowNode.java:329)
>     at 
> org.globus.cog.karajan.workflow.FlowElementWrapper.event(FlowElementWrapper.java:227) 
> 
>     at 
> org.globus.cog.karajan.workflow.events.EventBus.send(EventBus.java:125)
>     at 
> org.globus.cog.karajan.workflow.events.EventBus.sendHooked(EventBus.java:99) 
> 
>     at 
> org.globus.cog.karajan.workflow.events.EventWorker.run(EventWorker.java:69)
> 
> Ex098
> java.lang.NullPointerException
>     at 
> org.griphyn.vdl.karajan.lib.VDLFunction.leafFileName(VDLFunction.java:285)
>     at 
> org.griphyn.vdl.karajan.lib.VDLFunction.filename(VDLFunction.java:201)
>     at 
> org.griphyn.vdl.karajan.lib.VDLFunction.filename(VDLFunction.java:182)
>     at 
> org.griphyn.vdl.karajan.lib.swiftscript.FileName.function(FileName.java:19)
>     at org.griphyn.vdl.karajan.lib.VDLFunction.post(VDLFunction.java:67)
>     at 
> org.globus.cog.karajan.workflow.nodes.AbstractSequentialWithArguments.childCompleted(AbstractSequentialWithArguments.java:192) 
> 
>     at 
> org.globus.cog.karajan.workflow.nodes.Sequential.notificationEvent(Sequential.java:33) 
> 
>     at 
> org.globus.cog.karajan.workflow.nodes.FlowNode.event(FlowNode.java:332)
>     at 
> org.globus.cog.karajan.workflow.events.EventBus.send(EventBus.java:125)
>     at 
> org.globus.cog.karajan.workflow.events.EventBus.sendHooked(EventBus.java:99) 
> 
>     at 
> org.globus.cog.karajan.workflow.nodes.FlowNode.fireNotificationEvent(FlowNode.java:176) 
> 
>     at 
> org.globus.cog.karajan.workflow.nodes.FlowNode.complete(FlowNode.java:296)
>     at 
> org.globus.cog.karajan.workflow.nodes.FlowContainer.post(FlowContainer.java:58) 
> 
>     at 
> org.globus.cog.karajan.workflow.nodes.functions.AbstractFunction.post(AbstractFunction.java:46) 
> 
>     at 
> org.globus.cog.karajan.workflow.nodes.Sequential.startNext(Sequential.java:51) 
> 
>     at 
> org.globus.cog.karajan.workflow.nodes.Sequential.executeChildren(Sequential.java:27) 
> 
>     at 
> org.globus.cog.karajan.workflow.nodes.functions.AbstractFunction.executeChildren(AbstractFunction.java:40) 
> 
>     at 
> org.globus.cog.karajan.workflow.nodes.FlowContainer.execute(FlowContainer.java:63) 
> 
>     at 
> org.globus.cog.karajan.workflow.nodes.FlowNode.restart(FlowNode.java:233)
>     at 
> org.globus.cog.karajan.workflow.nodes.FlowNode.start(FlowNode.java:278)
>     at 
> org.globus.cog.karajan.workflow.nodes.FlowNode.controlEvent(FlowNode.java:391) 
> 
>     at 
> org.globus.cog.karajan.workflow.nodes.FlowNode.event(FlowNode.java:329)
>     at 
> org.globus.cog.karajan.workflow.FlowElementWrapper.event(FlowElementWrapper.java:227) 
> 
>     at 
> org.globus.cog.karajan.workflow.events.EventBus.send(EventBus.java:125)
>     at 
> org.globus.cog.karajan.workflow.events.EventBus.sendHooked(EventBus.java:99) 
> 
>     at 
> org.globus.cog.karajan.workflow.events.EventWorker.run(EventWorker.java:69)
> SwiftScript trace: T1af7, Round, 0, Sim, 7
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