"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."
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.
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I have a large multi-input multi-output design where each primary output is written in terms of primary inputs. Because the design is so large, DC is unable to synthesize the circuit. A straightforward solution is to synthesize each output individually and later, synthesize the bigger design by instantiating these smaller modules. However, I think there is a lot of room for optimization because all output functions share the exact same inputs.
Does ungrouping different designs optimize mostly around the boundaries or will optimize the whole design regardless of whether each smaller module has been synthesized before or not? If it optimizes the design as a whole, is there an advantage to synthesizing smaller modules first?
There is no difference between an RTL design and a post-synthesis netlist. Design Compiler tries to optimize both of them as long as the constraints (e.g. dont_touch) and synthesis options (ungrouping, boundary optimization etc.) permit. DC also has an option for the optimization strategy, I'll show below.
Unfortunately, none of these has worked. Consistently, the DC compiler indicates that the timing slack has been violated and returns a CPD of nearly 4ns. I've been stuck on this issue for some time, and I'm not sure where else to turn to for help. I'm new to this tool, but I've tried reading through large portions of the DC Compiler manual in search of more parameters/commands that may help.
I have been away from ASIC design for a while. Last time I used Synopsys Design Compiler was some years ago, and back then it was the de facto standard for frontend design. Now, I'm coming back to the field, the university offers both Synopsys Design Compiler and Cadence Genus.
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 ?
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.
.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.
Synopsys made its name in synthesis but has gradually added more and more tools to its repertoire, particularly after its merger with EDA giant Avant!. Available tools include:Design Compiler - logic synthesisPhysical Compiler - placement-aware logic synthesisVCS - native-compiled verilog simulation and debugDesign Vision - GUI for Design Compiler + design viewingPrimeTime - static timing analysisAstro - IC auto place & routeBehavioral Compiler - behavioral-level synthesisLibrary Compiler - auto generation of synth/sim/test librariesFPGA Compiler II - synthesis for FPGAsModule Compiler - datapath synthesisTetraMAX - ATPG & fault simulationFormality - formal verificationVERA - testbench automationAMPS - circuit optimizationArcadia - RC extractionDelayMill - SDF calculatorPathMill - static timing analysisNanosim - dynamic power and timing analysisPrimePower - dynamic gate-level power analysisSmartmodels/Mempro - behavioral models for commercial devicesRailMill - power rail analysisHspice - circuit simulationCosmos Scope - waveform viewer for Hspice, etc.Awaves - waveform viewer for HspiceTSUPREM4 - semiconductor process simulationMedici - 2D semiconductor device simulationDavinci - 3D semiconductor device simulationRaphael - IC interconnect field solverSaberDesigner - circuit and electromechanical simulation systemStar RCXT - IC interconnect extraction/analysisHercules - DRC/LVS checkingCosmos SE - schematic editorCosmos LE - layout editorCocentric System Studio - system-level design and analysisApollo - IC auto place & routeMagellan - formal verificationLeda - verilog/VHDL RTL checkerRunning on Unix/Linux:Note: to run Synopsys software on a non-CAEN EECS department machine, the machine must be part of the software subscription program.Under /usr/caen/bin (which should be in your search path) are wrapper scripts for many but not all Synopsys applications. These scripts set the proper environment variables for you and launch the application. Scripts include:dc_shell - Design Compiler shelldesign_vision - new gui for Design Compilerdesign_analyzer - old gui for Design Compilerlc_shell - Library Compiler shellpsyn_shell - Physical Compiler shellpsyn_gui - Physical Compiler guiprimetime - PrimeTime guipt_shell - PrimeTime shellbudget_shell - Design Budgeting shelltmax - TetraMAXnanosim - Nanosim shellnanosimgui - Nanosim guisold - Synopsys OnLine Documentation (all tools)amps - AMPSpathmill - Pathmillformality - Formalityfm_shell - Formality shellprimepower - PrimePowerpp_shell - PrimePower shellvcs - VCShspice - HSPICEawaves - Awavestsuprem4 - TSUPREM4medici - Medicidavinci - Davinciraphael - RaphaelAstro - AstroStarXtract - Star-RCXTc_scope - Cosmos Scopesaber - Saber simulatorsaberbook - Saber Online documentssketch - SaberSketchscope - SaberScopeapollo - Apolloleda - Ledamgsh - Magellanarcadia - Arcadiarailmill - Railmillhercules - HerculesCosmosLE - Cosmos LECosmosSE - Cosmos SEccss - Cocentric System StudioMany of these wrapper scripts use the version settings you select using the CAEN application swselect. If you haven't selected a version with swselect, the wrapper script will default to the latest stable version installed on the platform. TCAD tools like TSUPREM4, Medici, Davinci and Raphael are not "swselect-able" - wrappers always select the latest stable version. Most applications are available on both Solaris and Linux but there are some that are not available on Linux. See install directory for information on supported platforms.For TCAD tools, you will probably want to set the following two environment variables:setenv TMAPLOT_REPLOT CL/POSTSCRIPTsetenv TMAPLOT_XLIB /usr/dt/lib (if you use CDE)
"Enablement of the next generation of market-shaping products has demanded reassessment of how design productivity and quality-of-results can be improved," said Sassine Ghazi, co-general manager of the Design Group at Synopsys. "Leveraging the leading technologies from IC Compiler II and fusing novel, high-capacity synthesis and our industry-leading golden signoff technologies onto the same scalable data model, Fusion Compiler is engineered to offer the best QoR in the shortest time."
"We have focused on strengthening the product development process from timing design to physical design. As a part of this effort, we evaluated adopting the new Fusion Compiler tool for SoC-based designs. Because of our successful evaluation results, we accelerated the deployment of the tool to a real design," said Seiichi Mori, senior vice president, Toshiba Electronic Devices and Storage Corporation. "The power of this technology is essential for the design of tomorrow's FinFET-based automotive applications. With Fusion Compiler, we achieved the target design goal and completed the tapeout. Compared to conventional technology, we confirmed a 33 percent reduction in timing violations, 10 percent area reduction, and 30 percent less leakage power while cutting the design turnaround time in half. We have completed the integration of Fusion Compiler in Toshiba's design environment and have begun to deploy it to upcoming SoC designs." be457b7860
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