Re: [Emc-users] [Emc-developers] chart of arrays

[andy pugh]

On Wed, 28 Apr 2021 at 05:09, Stuart Stevenson  wrote:

>   Has anyone developed or printed a chart of arrays to use for
> visualization during LinuxCNC development?

I don't even know what a chart of arrays is.

-- 
atp
"A motorcycle is a bicycle with a pandemonium attachment and is
designed for the especial use of mechanical geniuses, daredevils and
lunatics."
— George Fitch, Atlanta Constitution Newspaper, 1912


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Re: [Emc-users] [Emc-developers] chart of arrays

[Nicklas SB Karlsson]

Den 2021-05-02 kl. 03:06, skrev Jon Elson:

On 05/01/2021 12:35 AM, Nicklas SB Karlsson wrote:

Den 2021-05-01 kl. 04:52, skrev Jon Elson:

NML may send via TCP/IP if configured to, got more time then I was 
unemployed and have been looking into the configuration file and at 
least once tried. ZeroMQ may also among methods send via TCP/IP, 
reading fast they do not say anything about the protocol used then 
sending data.


My understanding is that NML has no understanding of the hierarchy of 
the structures inside the shared memory area.  So, as written, it can 
only have the WHOLE shared memory across the net.


Zero mq's sole purpose is to break up the sub-structures so that 
clients can subscribe to specific structures that they need, and then 
ONLY that structure is sent to that node.


Jon


I did not have any idea which waw better, guessed Zermq but did not find 
anything about the protocol and nml already there.



Searching for more information however found something interesting. "In 
2011, CERN  was investigating ways 
to unify middleware solutions used to operate CERN accelerators." 
https://en.wikipedia.org/wiki/ZeroMQ and 
https://indico.cern.ch/event/354137/contributions/1763290/subcontributions/153483/attachments/701686/963362/ZeroMQ-tCSC-Aram.pdf 
which make me believe zeromq is a very good choice provided it is 
suitable for the kind of communication it is used for in Linuxcnc which 
I guess it is.



Do not have any time to spend on implementing it myself at least for months.


Nicklas Karlsson


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