Experimental Physics and
Industrial Control System

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<== Date ==>		<== Thread ==>

Subject:	RE: XSPRESS3 hdf5 problems
From:	Mark Rivers via Tech-talk <[email protected]>
To:	'John Dobbins' <[email protected]>
Cc:	"[email protected]" <[email protected]>
Date:	Thu, 23 Jan 2020 16:27:04 +0000

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 <[email protected]> On Behalf Of John Dobbins via Tech-talk
Sent: Thursday, January 23, 2020 8:15 AM
To: [email protected]
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