Design compiler check_timing

What are the constraints in SDC format?
This SDC file includes various types of constraints such as set driving cells, set load, design rule constraints, clock constraints, virtual clock constraints, and non-ideal clock constraints..
What is SDC in Verilog?
VPR supports setting timing constraints using Synopsys Design Constraints (SDC), an industry-standard format for specifying timing constraints.
VPR's default timing constraints are explained in Default Timing Constraints.
The subset of SDC supported by VPR is described in SDC Commands..
The Synopsys Design Constraints (SDC) format is used to specify the design intent, including timing, power and area constraints for a design.
This format is used by different EDA tools to synthesize and analyse a design.

Nov 9, 2015Try "check_timing -include {loop}" will help to report all cell/pin in the loop. Mostly loop issue can be broken by set_disable_timing [SOLVED] - Synopsys DC not constrainted endpoints[DC] how to solve a timing arc loop? - Forum for ElectronicsDesign Compiler Command Needed | Forum for ElectronicsHow to find unconstrained paths in a design? - Forum for ElectronicsMore results from www.edaboard.com

Nov 9, 2015Try "check_timing -include {loop}" will help to report all cell/pin in the loop. Mostly loop issue can be broken by set_disable_timing [SOLVED] - Synopsys DC not constrainted endpoints[DC] how to solve a timing arc loop? - Forum for ElectronicsDesign Compiler Command Needed | Forum for Electronicswhat to do "Path is unconstrained" - Forum for ElectronicsMore results from www.edaboard.com

How to generate design compiler output?

Design compiler output is generated by giving input as counter.v , and clock period of 2 .The Design Compiler output is shown below. write_sdf $ {name}.sdf Information:

Annotated 'cell' delays are assumed to include :

load delay. (UID-282) Information:Writing timing information to file '/home/student/labs/jithin_prjct/jith/count.sdf'.

What is Primetime timing in ASIC design flow?

So PrimeTime timing is as same as Design Compiler.
In ASIC design flow, PrimeTime is used pre-place&route also post-place&route.
In pre-place&route stage, we use PrimeTime to analyze the timing to confirm the timing goal is achievable in place&route.

How do I use a GUI for timing analysis?

Using the GUI for Timing Analysis The graphical user interface (GUI) of the Design Compiler and IC Compiler tools can help you visualize and understand the nature of timing problems in the design, including the type, number, magnitude, and locations of the paths, cells, and nets that are causing timing problems

What is the difference between primetime and Design Compiler?

Because PrimeTime is a signoff analysis tool, it performs a more comprehensive and exhaustive analysis to verify correct timing, whereas Design Compiler and IC Compiler perform timing analysis with sufficient accuracy to drive synthesis, physical implementation, and optimization

Synopsys Design Constraint Commands

What is timing analysis in design compiler?

Timing analysis serves different purposes in different phases of the design flow

In Design Compiler, timing drives the selection of library cells used for synthesis and the allocation of registers between combinational logic in data paths

Stage of electronic circuit design verification

Formal equivalence checking process is a part of electronic design automation (EDA), commonly used during the development of digital integrated circuits, to formally prove that two representations of a circuit design exhibit exactly the same behavior.