RE: [P1800] Request for additional time

Chas,

Has anybody looked into the possibility of splitting the VPI chapter
into a sub-PAR? Then the schedule could be de-coupled from the rest of
the LRM. The DPI should remain in the main PAR.

Dave


> -----Original Message-----
> From: owner-ieee1800@server.eda.org
[mailto:owner-ieee1800@server.eda.org]
> On Behalf Of Charlie Dawson
> Sent: Tuesday, January 08, 2008 12:21 PM
> To: IEEE1800
> Subject: [P1800] Request for additional time
> 
> Hi P1800,
> 
> As Chair of the SV-CC, I have been directed to forward the following
> request for additional time to our current schedule.
> 
>    -Chas
> 
> SV-CC has reached an impasse in the area of how the information model
> represents and accesses dynamic data and achieving the right balance
> between functionality and performance. Given the current schedule
> constraints we are faced with a specification in this area that either
> will not be adequate for users, or one with no consensus and that will
> undoubtedly be a ballot issue for the LRM.  On the other hand, there
is
> agreement that this is a very important area to get right and we have
> the willingness to work on the information model to better represent
> dynamic data and deal with its lifetime.
> 
> We are requesting until the end of March to complete this work.
> 
> Having long sought a compromise between backward compatibility with
the
> pre-SV information model and extension to SV dynamic data types, we
have
> come to the conclusion that we need to focus on a more faithful
> representation in the information model.  We have to enable
applications
> like debugging and design browsing.  The validity of VPI handles and
> their interaction with the lifetime of dynamic data are also a
concern.
> There is a balance we seek between good performance of the simulator
on
> the model in the presence of VPI, acceptable performance of VPI
> applications, and safety considerations.  We may even need VPI
> applications that participate in the testbench (or other aspects of
the
> model) where dynamic data is used in which VPI affects object
lifetime.
> What we have clearly recognized is the amount of attention yet
required
> and importance of doing it right.  We need the time.
> 
> --
> Charles Dawson
> Senior Engineering Manager
> NC-Verilog Team
> Cadence Design Systems, Inc.
> 270 Billerica Road
> Chelmsford, MA  01824
> (978) 262 - 6273
> chas@cadence.com
> 
> 
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