Synopsys Design Compiler Crack 185
Kody Coste
Design Compiler RTL synthesis solution enables users to meet today's design challenges with concurrent optimization of timing, area, power and test. Design Compiler includes innovative topographical technology that enables a predictable flow resulting in faster time to results. Topographical technology provides timing and area prediction within 10% of the results seen post-layout enabling designers to reduce costly iterations between synthesis and physical implementation. Design Compiler also includes a scalable infrastructure that delivers 2X faster runtime on quad-core platforms.
"Increasing product complexity and performance targets are driving AMD's need for predictable and efficient design flows that can enable high-performance designs. To help achieve these goals, we are collaborating with Synopsys on new technologies designed to accurately estimate RC and timing in synthesis and help improve prediction of place-and-route results," said Rajit Seahra, senior fellow of physical design methodology at AMD. "With Synopsys Design Compiler NXT, we are beginning to see significant improvement in RC and timing correlation to IC Compiler II, in addition to runtime speed-up and better timing QoR. We have started to deploy Design Compiler NXT technologies and anticipate it will enable a highly convergent design flow and help AMD bring difficult designs to market faster."
I want to check all the equiv./non-eq/aborts of the whole design, and diagnise it. But, I'm unable to find the doc. which gives specific information on debug of hier-result. Although there is a chapter in user-guide, it mostly guides about running flow using GUI. Could you please help me on it ?
If all goes well, the compiler should churn for a little time (or lots, depending on the complexity of your circuit). Finally, it should begin mapping your Verilog description to the standard cell library and generate reports for area, power, and timing (output in area.rpt, power.rpt, and timing.rpt, respectively). The prized netlist should also be written to the current directory.
Design Compiler Graphical addresses challenging design requirements at both established and emerging process nodes. It includes shared technology with the Synopsys IC Compiler solution that takes physical effects, such as routing congestion and RC variation into consideration and delivers superior timing, area, routability and power results. The physical guidance passed to IC Compiler, brings synthesis timing and area estimations to within five percent of layout, resulting in fewer iterations and faster design closure.
Synopsys, Inc. accelerates innovation in the global electronics market. As a leader in electronic design automation (EDA) and semiconductor IP, Synopsys delivers software, IP and services to help engineers address their design, verification, system and manufacturing challenges. Since 1986, engineers around the world have been using Synopsys technology to design and create billions of chips and systems. Learn more at www.synopsys.com.
Design Compiler (DC) uses an internal database to store your design throughout the synthesis process. As you execute various DC commands to optimise and modify the synthesised design, the database is updated. Finally, when you are satisfied with the synthesised results, you can write the database out in some format such as EDIF, or as a Verilog or VHDL netlist.
When you use Tcl in DC you need to understand how DC exposes its database. Tcl can handle only string data, and of course the DC database is in a proprietary binary format, so your Tcl scripts must access the database through the commands and functions provided as part of DC. In particular it's very important to understand how DC allows you to group database objects into collections which can then be supplied as the arguments to various commands.
Doulos offers Tcl training including an optional module on Tcl in Synopsys DC, to give synthesis users a get-you-started overview of how to approach DC scripting.
One of the worked examples from our DC-Tcl module is a script that explores the DC design database, to any required depth of hierarchy, in order to locate the gate or module that drives a specified net. This could be useful, for example, as part of a script that adjusts the size of driver devices to suit the capacitive loading of the nets they drive.
This example script illustrates how to traverse the design hierarchy, and how to investigate the relationship between different objects (for example, discovering what net is connected to some pin of a module).
.synopsys_dc.setup Don't miss this one! Make sure the file begins with a period. Copy it to your home dir (but then you can't customize it for individual runs, which is probably ok), or your working dir (make sure you copy it when you start a new dir). If you have a .synopsys_dc.setup file in your home directory (from ECE 180B for example), you will likely need to move it or change its name so that DC won't get confused.
Do not edit this file unless you are told you need to. Remember that it appears in linux only with "ls -a" and not just "ls".
Previously, we used the 0.25 um vtvt library.
- vtvt25 is a public-domain standard cell library based on TSMC's 0.25um2.5 V standard CMOS process using MOSIS design rules.The library is much smaller than common commercial libraries, but as adequatefor the area and delay estimation work we will do.The library was made by Dong Ha's group at Virginia Tech and moredetails can be found at theVirginia TechVLSI for Telecommunications web page.
New power driven mapping and structuring techniques, the addition of concurrent clock and data (CCD) optimizations deliver enhanced QoR. It has been redesigned to meet modeling needs of advanced process nodes, improved interconnect modeling, net topology and local density analysis engines that delivered tight correlation to IC Compiler II.
In summary, Design Compiler has been the industry leader for over 30 years and has delivered synthesis innovation in the area of test, power, data-path and physical synthesis. With this new addition once again Synopsys is raising the bar in evolving their RTL synthesis to enable SoC designs to target many emerging applications.
I'm writing a synthesizable VHDL model, which uses RAM of few kilobytes.
Design Compiler can synthesize RAMs only as flip flops, and this size is too
big for that. So, I need to tell it to treat an entity as block box and
prevent it from synthesizing the RAM.I tried doing this by wrapping the "architecture" part of my RAM model
inside --pragma synthesis_off/on pair, but then Synopsys complains:
'SYNC_SRAM' was not identified as a synthetic library module
and could not be successfully elaborated from design library 'WORK'Any idea?
But the sysnthesis tool will NOT instantiate a RAM model. So your design is
without RAM, and any connections to your RAM will be optimized out.
This is not a solution for you. You need to get the right DW ram, or library
of ram from your target library vendor (e.g., LSI if that is your target).
This should allow you to elaborate your design, even though synopsys will
give a warning about not being able to find a model for the RAM... You can
then synthesize, but obviously without taking timing condition into account
of the RAM interface.To make it really clean (read: no warnings during elaborate and
compilation), you need a synopsys .lib library model of the RAM. This .lib
model must be first converted into a .db file. Just use read_lib in
dc_shell. It will complain and give an error that you don't have library
compiler, but you can ignore this error: you can will write out the model
as a DB file. (The error is really about special .lib feature that you
don't need for a black box only model).If you don't have a .lib of the RAM model, then you will have to make one.
Good luck: it is not that difficult, but it will cost you quite a lot of
time. :-]Hope this helps (it has always worked for me...),Tom