On 10/28/2011 6:46 AM, Michael Haberler wrote:
I've written up a wiki page on the status:
http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?RemappingStatus
It's intended as a extended Readme to clarify what we're getting into, and as a
rough guide for reviewers (hint..)
I encourage developers, and the EMC2 Board in particular, to read the 'Problem
Areas in EMC2' section, and comment
-Michael
Michael:
I like your writeup.
As much as I want to be I've had to admit to myself that I'm not going
to be a core EMC2 developer nor am I likely in my remaining years to
work with machinery that requires your g-code remapping capability.
Still, I see much good for EMC2 generally in your proposal. I
particularly like the introduction of embedded Python and an "extensible
distributed shared memory mechanism with late binding." I'm not one to
debate it, but the idea of breaking away from line-by-line
interpretation seems long overdue.
As well, I give you high marks for experimenting rather than simply
expounding theoretically.
Regarding the adoption of redis, the risks seem minimal and manageable
and the benefits seem substantial.
Regarding a proposed revamp of EMC2's logging capability and the
question of Python, do you believe Python's existing logging capability
is sufficient or do you envision some sort of Python-log4cxx mashup?
I've been a huge fan of Python since I heard Guido speak at NIST many
years ago. On the other hand, my best programmer was a Tcl/Tk-head, and
we had many frank and open discussions (that's diplomat-speak for
"arguments) concerning the two, so I can imagine there may be some push
back on choosing just one interpretive language. Still, I think using
just one would improve EMC2's longevity (guess which one I would
choose:-)). Less is more.
I like that your writeup addresses the kinds of questions I claimed in a
recent rant should be answered in a good proposal---what is the problem,
how would it be addressed, what would be the benefits, etc.
One of those questions was "how will the results be implemented?" Maybe
it's clear to the developers and the board, but it isn't clear to me
which of the items you discuss need be introduced simultaneously as a
major revision and which can be introduced individually as minor revisions.
Please keep up the good work!
Regards,
Kent
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