[Swift-user] Externally controlled loop

[Carolyn Phillips]

Execution failed:
	java.lang.NullPointerException
	at org.griphyn.vdl.mapping.AbstractDataNode.getType(AbstractDataNode.java:95)
	at org.griphyn.vdl.karajan.lib.SwiftArg.unwrap(SwiftArg.java:57)
	at org.griphyn.vdl.karajan.lib.SwiftArg.getValue(SwiftArg.java:77)
	at org.griphyn.vdl.karajan.lib.Operators.vdlop_eq(Operators.java:216)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:601)
	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.completed(AbstractSequentialWithArguments.java:194)
	at org.globus.cog.karajan.workflow.nodes.FlowNode.complete(FlowNode.java:214)
	at org.globus.cog.karajan.workflow.nodes.FlowContainer.post(FlowContainer.java:58)
	at org.globus.cog.karajan.workflow.nodes.functions.AbstractFunction.post(AbstractFunction.java:28)
	at org.globus.cog.karajan.workflow.nodes.Sequential.startNext(Sequential.java:29)
	at org.globus.cog.karajan.workflow.nodes.Sequential.executeChildren(Sequential.java:20)
	at org.globus.cog.karajan.workflow.nodes.FlowContainer.execute(FlowContainer.java:63)
	at org.globus.cog.karajan.workflow.nodes.FlowNode.restart(FlowNode.java:139)
	at org.globus.cog.karajan.workflow.nodes.FlowNode.start(FlowNode.java:197)
	at org.globus.cog.karajan.workflow.FlowElementWrapper.start(FlowElementWrapper.java:227)
	at org.globus.cog.karajan.workflow.events.EventBus.start(EventBus.java:98)
	at org.globus.cog.karajan.workflow.events.EventTargetPair.run(EventTargetPair.java:40)
	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:722)

On Aug 31, 2012, at 2:17 PM, Mihael Hategan <hategan at mcs.anl.gov> wrote:

> Should work. What's the exact error you are getting?
> 
> $ swift b4.swift
> no sites file specified, setting to
> default: /home/mike/work/cog-svn/cogkit/trunk/current/src/cog/modules/swift/dist/swift-svn/etc/sites.xml
> Swift trunk swift-r5739 (swift modified locally) cog-r3088 (cog modified
> locally)
> 
> RunID: 20120831-1215-i0n6v30e
> Progress:  time: Fri, 31 Aug 2012 12:15:09 -0700
> Iteration :: 0
> Iteration Read :: 0
> the value is: 1
> Iteration :: 1
> the value is: 1
> Iteration Read :: 1
> Iteration :: 2
> the value is: 1
> Iteration Read :: 2
> Final status: Fri, 31 Aug 2012 12:15:09 -0700
> 
> $ cat b4.swift
> type file;
> 
> iterate passes {
>    file passlog <"passes.log">;
>    passlog = writeData(passes);
> 
>    int value = readData("errorlog");
>    int readpasses = readData(passlog);
> 
>    tracef("%s: %i\n", "the value is", value);
>    tracef("%s: %i\n", "Iteration :", passes);
>    tracef("%s: %i\n", "Iteration Read :", readpasses);
> 
> } until (readpasses == 2);  # Determine if Done
> 
> $
> 
> 
> On Fri, 2012-08-31 at 12:02 -0500, Carolyn Phillips wrote:
>> Hello,
>> 
>> So I want to create an externally controlled loop, meaning, the number of times the loop repeats is determined by the output of a executable called within the loop.  That output is written to a file so it can be read and checked.   I am experimenting with getting a very rudimentary set up.   Below you can see that I have two lines that determine if the iteration is done, one based on the variable "passes" and the other based on the variable "read passes" that is read from a file.  The second does not work and throws a execution failed exception.     Any advice on how to make this kind of structure work?
>> 
>> type file;
>> 
>> iterate passes {
>> 
>> 
>>    # try writing the iteration to a log file
>>    file passlog <"passes.log">;
>>    passlog = writeData(passes);
>> 
>>    # try reading from another log file
>>    int value = readData("errorlog");
>>    int readpasses = readData(passlog);
>> 
>>    # Write to the Output Log 
>>    int i = 3;
>>    tracef("%s: %i\n", "the value is", value); 
>>    tracef("%s: %i\n", "Iteration :", passes);
>>    tracef("%s: %i\n", "Iteration Read :", readpasses);
>> 
>> #} until (readpasses == 2);  # Determine if Done
>> } until (passes == 2);  # Determine if Done
>> _______________________________________________
>> Swift-user mailing list
>> Swift-user at ci.uchicago.edu
>> https://lists.ci.uchicago.edu/cgi-bin/mailman/listinfo/swift-user
> 
>