Re: [awips2-users] Automatic Clearing of AWIPS II's memory for prolonged use.

• To: "Capehart, William J" <William.Capehart@xxxxxxxxx>
• Subject: Re: [awips2-users] Automatic Clearing of AWIPS II's memory for prolonged use.
• From: Michael James <mjames@xxxxxxxx>
• Date: Sat, 6 Aug 2016 11:20:01 -0500

Hi Bill,

Are you seeing this memory warning with D2D or NCP or both?  Dev comments
note that  "perspectives can override the default behavior to take more
extreme actions to reduce memory usage", but it's not clear if or how this
is done by D2D or NCP (I'm looking into it).

A solution is to increase the maximum memory available to CAVE by changing
"-Xmx" in /awips2/cave/cave.ini

from
-Xmx2560M
to
-Xmx6144M

This 6GB max will be the new default in future CAVE releases (beginning
with 16.2.2), which will hopefully prevent this warning message.



Michael James
Unidata Program Center
Boulder, CO

On Sat, Aug 6, 2016 at 10:17 AM, Capehart, William J <
William.Capehart@xxxxxxxxx> wrote:

> We’ve been exploring the [mis]use of AWIPS II as a substitute for NAWIPS
> in our department hall display for radar/satellite and obs.
>
>
>
> The display is more than satisfactory for several hours especially with
> the use of both radar and satellite (as well as watches and warning) on the
> same display screen.  But at the end of this grace period we are hitting a
> memory “rope limit” that results in a dialog box shown before.
>
>
>
> “This CAVE is nearing its maximum memory limit.  Performance may degrade
> significantly 50MB available.  Consider closing tabs, clearing panes or
> reducing the frame count to free up memory”
>
>
>
> (this happens with even modest frame counts).
>
>
>
> Can AWIPS automatically clear its cache of by-past images that are outside
> of the current data display window?  I presume that this is how NAWIPS did
> this.
>
>
>
> Cheers and Thanks
>
> ================================================================
>
> Bill Capehart <William.Capehart@xxxxxxxxx>   Associate Professor
>
> Atmospheric & Environmental Sciences            Program Director
>
> Civil and Environmental Engineering             Hydrometeorology
>
> 201 Mineral Industries Building
>
> South Dakota School of Mines and Technology     Skype: wcapehart
>
> 501 East Saint Joseph Street                 Ph: +1-605-394-1994
>
> Rapid City, SD 57701-3995                Mobile: +1-605-484-5692
>
> =================== http://capehart.sdsmt.edu ==================
>
>
>
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  • [awips2-users] Automatic Clearing of AWIPS II's memory for prolonged use.
    • From: Capehart, William J