Thanks for the in-depth explanation, Erik.
The current release of Unidata CAVE (14.4) makes use of many thin client
mode features (to be sure, there is no "thin client" executable separate
from CAVE, instead it's a mode of operation).
* Local caching of maps and data is in use.
* There is no need for a proxy server, as httpd-pypies uses compression by
default on the EDEX machine.
* Unidata CAVE runs alertviz on start, the same as non-thin client mode.
As for Windows, Unidata has not released a Windows client yet, but plans
to. The NWS Windows release is available at
http://collaborate2.nws.noaa.gov/partners/ in the various version
subdirectories (distributed as .exe and .msi files). For clarity, let me
remind folks that Unidata does not support NWS AWIPS II, so if you download
the NWS Windows client and have trouble connecting to a Unidata EDEX
server, you're on your own :)
Michael James
Unidata Program Center
Boulder, CO
On Fri, Dec 11, 2015 at 12:04 PM, Magnuson.Erik <Magnuson.Erik@xxxxxxxxx>
wrote:
> Thin Client has been implemented in the NWS version of AWIPS2 since
> version 11.x for both Linux and Windows builds. It's described in Chapter
> 14 of the AUM and Chapter 26 of the Combined SMM. Like most network
> programs, AWIPS2 performance depends on both latency and throughput of the
> link and so Thin Client mode attempts to optimize these albeit at the cost
> of some loss of functionality. In addition, AWIPS2 was designed to be
> have all configuration data centrally controlled and dynamically updated
> but this means a lot of round-trip client-server transactions for every
> action. The java serialization of these transactions was also optimized
> for flexibility and not size/speed.
>
> * The "Localization Caching" and "Map Caching" options disable checking
> for new versions of this data and uses what's local. You may even pre-load
> all localization data to the client which will speed CAVE startup
> considerably over a slow link.
>
> * Product data caching becomes more aggressive at the cost that partially
> populated products may not be updated when complete.
>
> * You can define a proxy server so both EDEX and Pypies use a single
> external port (e.g. port 80 or port 443.) If you set this up as described,
> all communications to/from the server will also utilize gzip compression
> (really helps with some transactions, not so much for satellite images.)
>
> * You can turn off the JMS push notification of new data and replace it
> with timed updates.
>
> Last I checked, Thin Client mode required AlertViz and CAVE to be started
> separately (and with their respective '-component thin..." argument.)
>
> --
> Erik
>
>
> ________________________________________
> From: awips2-users-bounces@xxxxxxxxxxxxxxxx [
> awips2-users-bounces@xxxxxxxxxxxxxxxx] On Behalf Of Brendon Hoch [
> bhoch@xxxxxxxxxxxx]
> Sent: Friday, December 11, 2015 11:38 AM
> To: Neil Smith; awips2-users@xxxxxxxxxxxxxxxx
> Subject: Re: [awips2-users] Teaching in a Computer Lab Environment?
>
> [...]
>
> I had read that NOAA and Unidata were separately working on developing a
> AWIPS 2 Thin Client which would run under Windows and use remote
> servers, but haven't seen any recent news regarding their efforts.
>
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