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HPS-SOFTWARE  September 2015

HPS-SOFTWARE September 2015

Subject:

Re: stdhep error

From:

"Graham, Mathew Thomas" <[log in to unmask]>

Reply-To:

Software for the Heavy Photon Search Experiment <[log in to unmask]>

Date:

Wed, 30 Sep 2015 17:48:38 +0000

Content-Type:

text/plain

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text/plain (1 lines)


Just to note, we’ve been using the same madgraph and stdhep version the entire time so “generated recently” doesn’t mean we are using recent versions.  


> On Sep 30, 2015, at 10:42 AM, McCormick, Jeremy I. <[log in to unmask]> wrote:
> 
> Thank you, Tony.
> 
> Do you have any idea about the exact nature of this problem so that it could be fixed in the generator code?
> 
> I notice older StdHep files do not have this problem but I have seen it in many files generated for HPS recently (from madgraph I think?).
> 
> -----Original Message-----
> From: Tony Johnson [mailto:[log in to unmask]] 
> Sent: Wednesday, September 30, 2015 8:37 AM
> To: McCormick, Jeremy I.; Graf, Norman A.
> Cc: Graham, Mathew Thomas; hps-software
> Subject: Re: stdhep error
> 
> On 09/30/2015 08:18 AM, McCormick, Jeremy I. wrote:
> 
> 
> 	Hi,
> 	
> 	Does anyone have any idea about what causes this error in JAS3 when I try to open StdHep files?
> 	
> 	java.io.IOException: Invalid version 
> 	    at hep.io.mcfio.MCFIOBlock.read(MCFIOBlock.java:40)
> 	    at hep.io.stdhep.StdhepRecord.read(StdhepRecord.java:24)
> 	    at hep.io.stdhep.StdhepRunRecord.read(StdhepRunRecord.java:58)
> 	    at hep.io.mcfio.MCFIOReader$EventHeader.getBlock(MCFIOReader.java:231)
> 	    at hep.io.stdhep.StdhepReader.nextRecord(StdhepReader.java:49)
> 	    at org.lcsim.util.loop.StdhepEventSource.next(StdhepEventSource.java:83)
> 	[snip]
> 	
> 	I've opened a bug report for it in our Jira.
> 	
> 	https://jira.slac.stanford.edu/browse/HPSJAVA-610
> 	
> 	I have not been able to open any of the StdHep files that I have tried recently in JAS3.  I suspect it may have to do with an incompatibility introduced in a recent versions of the Freehep mcfio package, but it is just a guess.
> 	
> 	Thanks.
> 	
> 	--Jeremy
> 	
> 
> This sounds familiar, I think Norman reported something similar and it was to do with the way the stdhep files were generated. I put a work around in:
> 
> http://java.freehep.org/svn/repos/freehep/diff/freehep/trunk/hepio/freehep-mcfio/src/main/java/hep/io/mcfio/MCFIOBlock.java?revision=16295&entries=/freehep/trunk/hepio/freehep-mcfio/src/main/java/hep/io/mcfio/MCFIOBlock.java@16295&entries=/freehep/trunk/hepio/freehep-mcfio/src/main/java/hep/io/mcfio/MCFIOBlock.java@16294
> 
> Looks like this is currently only in freehep-stdhep 2.0.6-SNAPSHOT.
> 
> Tony
> 
> 


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