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<== Date ==> <== Thread ==>

Subject: Re: ICE and TIPC
From: Kay-Uwe Kasemir <[email protected]>
To: EPICS Core Talk <[email protected]>
Date: Wed, 27 Jul 2005 11:48:39 -0400

On Jul 27, 2005, at 11:21, Ralph Lange wrote:
I haven't seen one other communication layer that would require
non-contiguous data, including CA V3, so why obfuscate
the V4 data access with non-contiguous data?
Probably a typo:
Only if you consider disagreement with your opinion a typo ;-)

As far as I recall, the issue was never to /require/ non-contiguous data, but to define interfaces that /allow/ implementations that can handle non-contiguous storage, so that a network layer does not have to double-buffer data.

I suggest _not_ to allow con-contiguous storage.
I cannot imagine a server that keeps his
strings in segments.
I understand why a network layer will _receive_
the data in pieces, but that's a problem of the
network layer.
All communications layers that I have seen so
far hide that detail from me.
With the proper environment variable configuration,
even CA V3 hands me the complete dbr_ctrl_double
for huge arrays,
so why obfuscate the V4 data access in order to
support non-contiguous data?

-Kay


Replies:
Re: ICE and TIPC Andrew Johnson
References:
ICE and TIPC Marty Kraimer
Re: ICE and TIPC Kay-Uwe Kasemir
Re: ICE and TIPC Ralph Lange

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