D2K Performance and Batch Mode


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Posted by David Clutter on October 03, 2000 at 02:16:10:

I am not going to have time to look at this today, but I will try to look
into it tomorrow. A few thoughts: are you using ssh to log into the
machines in your lab? That slows things down considerably, as all data
that passes between the machines must be encrypted (or decrypted). Use
telnet instead. Is this a memory-intensive itinerary? If so, you should
set the initial and maximum heap sizes for the jvm to be large, because
incrementing the heap size at runtime is very, very slow.

To run d2k in "batch mode" try this (the -ms and -mx are optional):

java -ms50M -mx100M -classpath
LocalController.jar:jaxp.jar:parser.jar:swingall.jar
ncsa.d2k.infrastructure.ComLineApp

This will execute your itinerary without showing the d2k window.

At 10:47 AM 9/27/00 -0500, Laura Kruse wrote:
>Mr. Clutter,
>
>I'm am working in Dr. Hsu's group. We have been running some
>performance test's on the K2 itinery that Haipeng made. We run into
>some interesting results. On my personal computer, it runs in about
>30-40 minutes, running both the Standalone Version and running it in
>D2k. Running it on the computers in our lab tends to take anywhere from
>3 hours to 12. (3 Topeka, 7-8 Salina, 12 Yavanna) This seems to give
>interesting results. Dr. Hsu asked me to have you at it to see if you
>could notice something. I have attached the Java Source and the
>iternary that was built.
>
>Also could you explain how d2k batch mode works. Thanks.
>
>--
>Laura Kruse
>509 Goodnow Hall
>Manhattan, KS 66506-2000
>(785) 395-2128


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