Thanks, this looks really cool!
From: owner-gembud@xxxxxxxxxxxxxxxx on behalf of Ron McTaggart-Cowan
Sent: Wed 9/7/2005 7:02 AM
Subject: GEMPAK SpeedPatch
Hi users - We (AOS at the University at Albany) have developed a
speed-up patch for GEMPAK that we thought we'd share with the community.
The patch, and lots of supporting documentation - including installation
details - is available from:
The modifications made by the patch make plotting virtually
instantaneous on a fast machine and can dramatically improve script
performance, especially if a lot of image generation is required. We're
using a patched version of the latest GEMPAK distro at UatA on both
SunOS and Linux machines.
For the technophiles: the patched version of GEMPAK will use sys-V
semaphores to track message queue usage rather than the current
handshaking method. For normal operations (i.e. unless the user has
closed an X-window prematurely ... but users never do that, right?),
this means that the 1-2s handshaking wait time is avoided. The waits
can add up and produce a noticeable delay for the user. Lots more
details about the speedPatch implementation are available from the
You can send bug reports or questions to rmctc at atmos dot albany dot