contr23@NOSC-TECR ("CONTR23") (03/08/86)
I am presently interested in accumulating a list of "concerns"
that a software designer or implementor may want to considered in the
design of an Ada Multi Processor System. My primary interest is to
accumulate past experience that other people have had in developing
software for distributed systems and determine if it is applicable for
the Ada environment. Any insight into the area of distributed
systems, however, will at least be considered.
The follow list of "concerns" can be used to serve as an example:
a) Program Development - Will pragmas be used to target specific
sections of code to system processors?(The current Ada
tasking model dictates that this should be transparent to
implementors and designers)
b) RTK Scheduler - How indivual vendors implement their
scheduler may have dramatic effects on the application
programs that they execute. It would be beneficial if some
discussion or information pertaining to the scheduling algorithm
be passed on the implementors.
c) Will each processor have it's own RTK?
d) How will communication be performed between each processor?
Will benchmark data be available to determine the speed of
rendezvous? How reliable is this communication?
e) Size of the RTK?
f) Will a debugger be available? Can it be executed on the
development processor?
This is by no means a complete list of questions, however, I feel
that it may give you an idea of some of my concerns. An attempt will
be made to categorize the list into distinct sections. If anyone has
any suggestions with respect to the organization, please pass along
your thoughts. I'll keep the list open for at least two months, then
send out the accumulated list for review.
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Jim Baldo
E-Systems
ECI Division
P.O. Box 12248
St. Petersburg, FL 33733
813-381-2000 ext. 4586
CONTR23@NOSC-TECR
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