Re: XSPRESS3 hdf5 problems

[Matt Newville via Tech-talk <tech-talk@aps.anl.gov>]

Hi John,

Just to follow up: I don't recall ever seeing that error from HDF5 with epics-modules/xspress3.  I believe there were some known problems with HDF5 that were fixed around AD 2, but I don't recall the details. 

 

On Thu, Jan 23, 2020 at 10:55 AM John Dobbins <john.dobbins@cornell.edu> wrote:

Mark,

Thanks. I'll give that a try.

John

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From: Mark Rivers <rivers@cars.uchicago.edu>
Sent: Thursday, January 23, 2020 11:27 AM
To: John Dobbins <john.dobbins@cornell.edu>
Cc: tech-talk@aps.anl.gov <tech-talk@aps.anl.gov>; Matt Newville <newville@cars.uchicago.edu>
Subject: RE: XSPRESS3 hdf5 problems

 

Hi John,

 

Ø  I have contacted Quantum.  I thought that while waiting to hear from them it would make sense to build an IOC from source. On github I see

Ø  epics-modules/xspress3

 

The IOC that Quantum distributes is ancient, using areaDetector R1-9-1.

 

That is the one I recommend you use.  Matt Newville in our group here at the APS is maintaining it.  It is working with the latest version of ADCore, ADSupport, etc.

 

It uses NDPluginROIStat for ROI statistics.

 

There are new OPI screens.

 

Mark

 

 

 

From: Tech-talk <tech-talk-bounces@aps.anl.gov> On Behalf Of John Dobbins via Tech-talk
Sent: Thursday, January 23, 2020 8:15 AM
To: tech-talk@aps.anl.gov
Subject: XSPRESS3 hdf5 problems

 

All,

 

I have a new 5 channel Quantum Xspress3 data readout unit which when taking multiple frames will start generating hdf5 related error messages at what seems like random (will acquire between a few or thousands of frames before generating errors).  Once these messages start they seem to continue until the IOC segfaults. 

 

repeating pair of error messages on the IOC console:

 

 HDF5-DIAG: Error detected in HDF5 (1.8.12) thread 0:

  #000: ../../src/H5Dio.c line 231 in H5Dwrite(): can't prepare for writing data

    major: Dataset

    minor: Write failed

  #001: ../../src/H5Dio.c line 348 in H5D__pre_write(): file selection+offset not within extent

    major: Dataspace

    minor: Out of range

 

This IOC is a binary that comes with the detector. 

 

I have contacted Quantum.  I thought that while waiting to hear from them it would make sense to build an IOC from source. On github I see

 

epics-modules/xspress3

 

and

 

quantumdetectors/xspress3-epics  forked from the above.

 

Any advice on which i should go with? Any suspicions regarding the hdf5 errors?

 

Thanks,

 

John Dobbins

 

Research Support Specialist

Cornell High Energy Synchrotron Source

Cornell University

 

www.chess.cornell.edu

--

--Matt Newville