[kepler-dev] directors in Kepler
tmcphillips at mac.com
Tue Jan 8 11:46:40 PST 2008
I just read through the "Directors in Kepler" page on the Kepler wiki
have a couple questions.
First, the image DirectorChoice.gif doesn't seem to display in
Firefox or Safari. Could it be corrupted? I'm eager to see this
figure. It would be very nice to have chart showing what general
workflow-design situations different directors support well.
Second, the document states that PN workflows "can be very
inefficient because the Director needs to keep going through the
actors looking for ones that have sufficient data to fire." My
assumption was that the PN director sets each actor running in its
own thread, with the blocking of get() operations on empty input
channels enabling the Java thread scheduler to do the work of
ordering actor invocations, and with actors communicating directly
via FIFOs without assistance from the director. Have you looked more
deeply into this?
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