[cc'ing EPICS V4 Working Group to verify advice on general solutions you could use]
Right, the example of data reduction is exactly what EPICS V4 brings. The URLs Guoabao gave
you should get you going. The Documentation page of EPICS V4 web site links to all of the documentation available. It's at:
I think there are two general forms you could use to address your data reduction of V3 data problem:
1) v4 client - V4 IOC - V3 IOC
2) v4 client - V3 IOC running V4 CAV3.
An example of building the second case is given in the doc "Getting Started with EPICS V4",
that Guobao pointed you to. The part you'd be interested in is the part 3, on C++ development.
It was written by Timo (I wrote the fist part on Java service development).
Timo Korhonen and his colleague Dirk Zimoch at PSI, are taking the first steps in developing the
patterns for EPICS V4 - EPICS V3 interactions.
I suggest you contact them for support, and do please email the group
<epics-pvdata-devel@... with findings. We need to create the real world examples
that others can follow.
On 24 May 2012, at 00:38, Dalesio, Leo wrote:
> This is not hands on - really more of an introduction for physics application developers.
> From: Shen, Guobao [shengb@...]
> Sent: Wednesday, May 23, 2012 4:18 PM
> To: Martin Konrad
> Cc: greg@...; Dalesio, Leo
> Subject: Re: IPAC12: EPICSv4
> Hi Martin,
> You can find the project web page at
> A "Getting Started" page can be found from there to give you a brief introduction,
> or you can try the following link:
> Bob Dalesio is at the conference now, and you could find him and have a talk face-to-face.
> On 5/23/12 1:12 PM, Martin Konrad wrote:
>> Hi Greg, hi Guobao,
>> I'm planning to attend the session about EPICSv4 tomorrow morning. I'm
>> familiar with EPICSv3 as a user and as a developer but didn't try v4
>> yet. I'm especially interested in IOC-side data reduction (e.g. having a
>> PV that provides average values over 100 samples of another PV).
>> Is there anything I should download or prepare in advance?