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

Subject: Re: gpu integration into epics
From: Rodrigo Castro <rodrigo.castro@ciemat.es>
To: EPICS Tech <tech-talk@aps.anl.gov>
Date: Tue, 16 Oct 2012 12:55:54 +0200
Hello Sean,

First of all, I am sorry for the delay in the answer but I just received a reference to this question (through an email from a colleague) and I wasn't subscribed. Now, I am.

About the work, I am one of the authors. I am working for the Spanish National Fusion Laboratory in Madrid and I have been working with some colleagues implementing EPICS based Fast Control technology for ITER. 

As we showed in the presentation, we have done all the development based on asynDrivers. In fact, we have developed an infrastructure based on asynDriver modules, which are instantiated at IOC start time, and a set of configurable links with user defined data structures which are also configurable at start time. The result has been a modular system which has been able to ingrate two (but can be more) GPUs, with a steady state internal hight data rate movement (256 MBytes/sec - 32 acquired channels to 1 Msamples/sec), and with total deviation times about 1% (soft real-time system). 

Currently we have modules for:
	- FPGA (FlexRIO) data acquisition
	- GPUs
	- Waveform injection
	- Remote data streaming for archiving
	- INPUT and OUTPUT shared memory connectors (for connecting with other IOCs or processes)
	- Monitoring
	- Data streaming (for archiving)

Additionally, the system supports input data synchronization (for processing).

Based on achieved good results, and the modularity of the solution, we are extending its applicability to soft real-time systems demanded on other fusion machines.

Sorry for the extension of the message but I tried to give a quick view of the EPICS technology involved.

Best regards,
Rodrigo
    
--
Dr. Rodrigo Castro

e-mail:         rodrigo.castro@ciemat.es

Tel: (+34) 91 3466419
Fax: (+34) 913466124

CIEMAT (National Research Agency for Energy and Environment)
Avda. Complutense, 22
28040 Madrid
----------------------------------------------------

> Hi
> 
> I came across a talk from the "7th Workshop on Fusion Data Processing Validation and Analysis" on the use of
> gpu's with epics. 
> http://www.fusione.enea.it/EVENTS/eventifiles/validation7-2012/workshop-slides/1stday/GPUs.pptx
> 
> 
> Does anybody have details or knowledge of the progress of gpu integration into epics? This was from March 2012, and given the title of the conf, obviously
> related to ITER.
> 
> I assume at least 1 of the 6 authors is on this list maybe ?
> 
> Thanks
> Sean


Replies:
RE: gpu integration into epics james.rowland

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