Conformal Lec Training Basic Advance | Formal Verification ... Descubrí lo que dice esta letra que se involucra de lleno con el tema de la violencia de género. Answer (1 of 2): Contact means it is a connection to source , drain and poly, while via is used to make connection between 2 metal layers. PDF Synthesis)Design)Constraints)and)) Timing)Reports) MET 415: Beam and Truss Elements lec unreachable. Specify relationships, such as pin equivalence. So, what you have to do is : You have to:-. add pin constraint 0 scan_enable_i -both add pin constraint 0 scan_mode_i -both Set flatten Model : Usually synthesis does lots of optimization. VLSI Physical Design: Basics of IC Compiler Appropriate constraints depend on the element types you are using. Clock pin of ICG cells. Conformal lec-abort points,blackbox mismatch,cutpoint ... MET 415: Chapter 8: Boundary Conditions . add pin constraints 0 scan_en_in -revised => to force scan_en_in to 0 for gate netlist (since scan_en_in not tied to anything in golden RTL). Formality Equivalence Checking - Synopsys Conformal LEC : 네이버 블로그 where 1 pin is PI and other pin is sm). XGrid slots: none, ie, no placement grid, no "1 gate in 1 slot" constraints X Pins: must be fixed somewhere around boundary of the chip X Wires: we only allow 2-point connections; we minimize Σ length 2 ; Wait for 1000 milliseconds, â ¦ The design example discussed in this white paper is from a real world debugging session by a GOF customer. The schematic from LEC debug tool printed out too many gates and connections. The Problem I am facing is. Add Compare points and compare the designs: add compare point -all compare Analyzing Results After Comparison Once the compare process is completed, Conformal LEC will print a summary report that tells how many key points are equivalent, non-equivalent, aborted and not compared. add pin constraint 0 scan_enable-revised. SETUP > add pin constraint 0 scan_en -revised // scan_en pin 에 강제로 0 할당 *Instance Constraint : internal D-F/F or D-latch 의 출력에 0/1 을 줄 수 있습니다. . Timing constraints for TX side are met. 10. 80. 6. read design compare Some commands are legal only under certain circumstance e.g. 需要比对的两个文件，一个是标准的golden,一个是待比对的revised。 各种库文件的verilog model. Fig2: Non Stop pin. LEC tool will constrain only the PI (primary inputs) and PO (primary utputs) for constraining because the aim of the tool is to evaluate equivalence between key mapped points and any pin inside the module is not a key point. Conformal Lec Training Basic Advance - Free ebook download as PDF File (.pdf), Text File (.txt) or view presentation slides online. The symbolic representation of a latch and a flip flop has been shown in figure-1. add pin constraint 0 scan_enable-revised 4/7 Figure 4 This is how golden DFF vs. revised DFF looks after scan insertion. regards, Masood PS: You realize, by adding the one_hot constraint you are just telling Conformal-LEC to ignore the non-one-hot conditions. . Usually, you do not have to add anymore Conformal LEC constraints to verify your netlists. Constraints for TX: set_property PACKAGE_PIN E17 [get_ports LAN_TX_CTL] Explain about the LEC procedure and issues faced and solved with respect to non-equivalent points. • Performed various tasks while analyzing the LEC. 2.Read the Same Golden Design and The Different Revised Design. add net constraints one\_hot my\_out -revised. Draw the free body diagram of the winch which b 3 in. If the signal is completely hanging without connecting to anything else, we can remove it. Parameters Related Commands ADD PIN CONSTRAINTS REPOR T PIN CONSTRAINTS-ALL_Pin Deletes "all" constraints placed on primary input pins within the given defaults. Conformal LEC modelling directive - flatten model, mapping method, adding scan constraints to disable related logic, adding pin equivalence constraints for feedthrough & Clock Top-Down Ports Show more Show less 所用的工具——LEC（或者Formality） LEC输出的文件. Set scan constraints: If the netlist is a scan inserted, RTL vs Netlist comparison has to be done by disabling scan path. tions and various constraints and bounds on the design to synthesis tools. "add pin constraint" before compare e.g. (LEC Mode) Reports fan-out gate information from the currently displayed flatten gate information. New pin-swap groups are automatically named using numerical values (e.g., 1, 2, 3, etc.). The pin/pad placement depends on the external physical environment of the design, The simplest design latch and flip-flop both are having 3 pins, One input data pin (D), one input clock/enable pin (CP/E) and, one output pin (Q). 保留结果的session文件. "add pin constraint" before compare e.g. read design compare Some commands are legal only under certain circumstance e.g. 约束文件：black box （IP）和pin constraint等. " # $ Fig. . It's done by using the following command: set system mode lec. 002158216 mvp_vpp_wrapper 19-12-e034 crash during syn_gen. Hi all, I am comparing RTL vs netlist using conformal and when I do vpx analyze noneq <gate_id> , I get 30+ of these errors (similar ones as below): I have used all modelling directives. In that case lec may never catch this bug if we don't check for this constraint (se=1, sm=0). Mapping process . add pin constraint 0 scan_enable-revised. Add comment. Answer (1 of 4): These issues are supposed to be caught in lint. 15+ Years of experience in Physical Design for Flat / Hierarchical ASICs, SOCs in various technology nodes (16nm, 14nm, 10nm, 7nm & 5nm) at FULL Chip / block level. Worked on design migration from FPGA to ASIC, pin out . Often use direct definition of nodes and elements. Learn more. The global electronic weighing machines market size was valued at USD 3.7 billion in 2019 and is expected to grow at a compound annual growth rate (CAGR) of 3.1% from 2020 to 2027. Activity points. Switch System mode to LEC: set system mode lec 5. Constrain internal nets, such as primary input, primary output, and tied . If hiearchical SETUP> add net constraint one_hot mod1/bus[3] mod1/bus[2] . 1.Read a Golden Design and a Revised Design. Add significant overhead on call set up Increase bandwidth of the channel 2: Digital logic synthesis 7 1471339 LEC pin constraint issue 1481054 simulation library with vdd vss pin causing mapping problem (multibit mapping) . This section describes the details of the Conformal LEC commands in the scripts to help you compare the revised netlist with the golden netlist. set log file lec.log replace read design systemverilog gold f myrtl.filelist read design systemverilog rev f mynetlist.filelist add renaming rule r1 foo bar gold set sys mode lec report unmapped points add compare points all compare report compare data Skeleton LEC Dofile These constraints re°ect the needs that the design must meet. Determine 6 The proven LEC log abstract is of a non-equivalent golden and revised design . add pin constraint 0 scan_enable-revised. 1> add primary input XYZ -both. −Add extra bits in the cache to predict the way of the next cache access pBlock predictor bits −Multiplexor is set early to select the desired block pAnd in that clock cycle, only a single tag comparison is performed in parallel with reading the cache data −A miss results in checking the other blocks for matches in the next clock cycle For example minimum area, minimum speed and maximum power dissipation. Change to LEC mode. Independent Guidance Based Verification John Lehman, Director, Applications Engineering, articulates how users can enable aggressive optimizations in Synthesis but yet rapidly set up Equivalence Checking with minimal user intervention. 约束文件：black box （IP）和pin constraint等. Conformal Smart LEC. • Floor-planning, power planning, pin/port placement & placement optimization & for timing and area SDC/constraints clean-up. add pin constraints 0 SE -revised [tool keeps the design in functional mode and ignore scan_in pin while compare. o Debug the failures which cause non-equivalence between golden and revised netlist and fixed the issues after analyzing the schematics. Add ATPG Primitives Add Atpg Primitives <name> <And . Setup mode vs. LEC mode Motivation Some commands must be applied before others e.g. 1,963. LEC所需要的文件. La banda uruguaya y la cantante argentina suman fuerzas en una canción que forma parte del álbum "Luz". hookup_pin is internal pin which is the actual scan_en that should goto all flops. After all of the setup constraints and modeling directives are added, the device should be toggled to LEC mode for mapping key factors and comparability. Specification of modeling directives After synthesis, the netlist output from the synthesis tool would be power optimized. However, you can manually add or delete compare points for LEC on your purpose. 2033311 add pin binding does not auto map all pin bindings 2034465 partition EQ in 18.20-p100 and NEQ in 18.20-s200 2035068 elab design gave bogus warnings on config file Providing full-flow development and deployment using DCG/ICC2/PT for designs in leading-nodes such as 3nm, 5nm, and 7nm. [-root pin_name ] [-routing_rule rule_name] [-use_default_routing_for_sinks ] The nondefault routing rules of clock shielding apply only to nets that are assigned with nondefault routing rules. In addition, logic libraries can provide timing information for hard macros, such. 比较的结果报告. . . What happens when things go wrong? Via in any of the integrated circuit , via is used to connect a metal trace of 1 metal layer with metal stack of another layer. Here is the Scenario of the Problem I am facing. add pin equivalence CLK -invert CLK\_n -revised. Protected by an optional PIN and a PUK (PIN Unlock) Locked after a few invalid inputs of PIN (normally 3) and becoming permanently useless after a . 2. Specify behavior, such as one-hot or one-cold. Draw the free body diagram for the truss a is a pin and b is a rocker. Using Load and Constraint Sets (p. 277) = Using Load Steps (in ANSYS) Coordinate Systems (p. 278-80) = Local Coordinate Systems, Rotated Nodal Directions (in ANSYS) CONSTRAINTS (p. 280-87) Constraints remove spatial DOF's from the model. But I am not shuare that all is right. The input signal can be defined on a top-level port or an internal driving pin. Formality Equivalence Checking: Up to 5x faster performance. SETUP > add black box U2 -model -golden // U2 모듈을 blackbox 로 봅니다. Good Exposure to . Add Compare Points: We should tell LEC what are the points in both designs that we want to compare. About. The tool supports logic libraries that use nonlinear delay models (NLDMs) and. Appropriate constraints depend on the element types you are using. You can remove more than one pin â ¦ add pin constraint 0 scan_en -golden/revised . No Te Va Gustar, Nicki Nicole - Venganza (canción de la semana) 07-06-2021. We are offering a diverse and inclusive space where all should feel valued, regardless of their gender, race, ethnicity . <design_name>.scan_const file provides scan related constraints like if we want to ignore some scan connections/serdes input/output pins which are defined in this file. LEC > add mapped points LEC > add compare points -all LEC > compare RESULTS The DFT insertion is performed during the synthesis of the SoC with amber core in RC [9]. . Normally solid modeling and automatic meshing is NOT useful for line element models. You can specify these constraints based on the utilization, aspect ratio, and dimensions of the die. Support is provided by a bolt or pin located at each end a and a and by the symmetrical brace arms which bear against the smooth wall on both sides at b and b. LEC between rtl and netlist. Load more. Can you give me some advices about timing constraints for RGMII (TX side). Before, only constraints between Lec 1 - Lec 1a - Lab 1 and Lab 1 - Lab 1a - Lec 1 were created, allowing Lec 1a to overlap with Lab 1a. 002158136 I-Spatial timing discrepancy in 6nm case. These are commonly called "two-force members", carrying only axial load. SDC is a common format for constraining the design which is supported by almo. I have removed all timing violations for TX side. . as RAMs. LINT, CDC, LEC (Formality/Conformal) SDC - Constraints Development & Validation UPF/Low Power Design, SoC integration, PPAR analysis . You can indicate whether to add shielding to leaf pins by using the-use_default_routing_for_sinks option. The linter cannot guess what the clock periods are, but can suggest better rule output when the decision depends on the period comparison (fast-to-slow, slow-to-fast transfers). Resource constraints of mobile devices . 11. Test project is attached below (for Vivado 2018.2). 4. Supplying constraints is a must when the relations between clocks or resets are invisible by looking only on the netlist topology. 1471339 LEC pin constraint issue 1481054 simulation library with vdd vss pin causing mapping problem (multibit mapping) . Every time you weigh yourself, the smart scale exports your data to tables and graphs to help chart changes over time. SETUP > add black box U2 -model -golden // U2 모듈을 blackbox 로 봅니다. This will . Standard USE statement (required): use STD_1149_1_1994.all; PIN Types: in (input-only) out (may be tri-state or open-collector) buffer (active, 2-state, always driven) inout (bidirectional) linkage (power, ground, analog, non-connect) Relate logical signals to package physical pins Group ports -- differential voltage or current pairs (one . Determine 6 The proven LEC log abstract is of a non-equivalent golden and revised design . • Timing (STA) Flow, ECO level timing & physical design changes . contacts and bias both are fo. 所用的工具——LEC（或者Formality） LEC输出的文件. After entering your comment, please wait for moderation. 形式验证——学习笔记 形式验证简介 通过纯数学方法分析两个网表的逻辑是否完全等价 一种静态比较，会遍历所有的组合保证逻辑等价性，不需要动态激励 比仿真可靠性高!! What are the time constraints on the tasks? add examine point-all examine. This fixes an issue when there is Lec 1 - Lec 1a chain and Lab 1 - Lab 1a chain which are not in a parent-child relation. Command Reference for Encounter RTL Compiler Product Version 9.1 July 2009 After all the setup constraints and modeling directives are added, the tool must be toggled to LEC mode for mapping key points and comparison. 6. 保留结果的session文件. 形式验证LEC的流程 . 2> add pin constraint 0 XYZ -both. <design_name>.lec file guide the Conformal tool to execute different command in a systematic way. In the command, specify a name to identify the constraint, the constraint value (0, 1, or Z), and the place in the design to apply the constraint. o Created a setup which reads proper liberty files and netlist files with some required constraints. SETUP > add black box /Top/I3 -golden // Top3/I3 instance 를 blackbox 로 봅니다. . The datamemory is instantiated with one spram library memory module..I add notranslate to spram and still I got 1 non equivalent black box after comparison..Still that datamemory is the blackbox and 1 input pin of it shows mismatch.Can you please be more specific?Since Im a fresher I face some problem to debugg this LEC所需要的文件. New pin-swap groups are automatically named using numerical values (e.g., 1, 2, 3, etc.). Though the LEC tool itself has the capacity to add cut points at certain . Tried set flatten model -seq_constant, remodel -seq_constant -repeat but it seems to be increasing my non-eq points instead of resolving them. Setup mode vs. LEC mode Motivation Some commands must be applied before others e.g. ! standard cells. EE382N: Embedded Sys Dsgn/Modeling Lecture 7 © 2015 A. Gerstlauer 5 EE382N: Embedded Sys Dsgn/Modeling, Lec ture 7 © 2015 A. Gerstlauer 9 Pin-/Cycle-Accurate . Change System Mode to LEC 3. SETUP > add pin constraint 0 scan_en -revised // scan_en pin 에 강제로 0 할당 *Instance Constraint : internal D-F/F or D-latch 의 출력에 0/1 을 줄 수 있습니다. With massively parallel architecture and adaptive proof technology, the Conformal Smart LEC delivers dramatic turnaround time improvements in equivalence checking by over 20X for RTL-to-gate comparisons. Designer software enables you to specify the physical constraints to define the size, shape, utilization, and pin/pad placement of a design. The clock pin of sequential cells driving generated clock are implicit non-stop pins. • Constraint-based dynamics - Reformulate constraints and solve - This is an advantage for constraint-based dynamics! • Impulse-based dynamics - Must not add energy to the system in the presence of friction - We will integrate work performed by contact impulses to track energy change "diagnose" after compare Hierarchical vs. flattened designs Two system modes Setup mode LEC mode Usage (command line) SET SYstem . Basic Training material for conformal LEC 1. FEV Constraints. Class Assignment: Projected Student Conflicts The Conformal Smart Logic Equivalence Checker (LEC) is the next-generation equivalency checking solution. For the execution of LEC, the Conformal tool requires three types of files. silicon will never work with this bug, as during func run even . If it is completely undriven but is used for loading something else, like a flop, the RTL needs to be revisited and the logic has to b. Draw the free body diagram for the truss. primary_pin* . 002157664 Genus equivalent for TCL vars: CCR 2073825. 需要比对的两个文件，一个是标准的golden,一个是待比对的revised。 各种库文件的verilog model. Command Reference for Encounter RTL Compiler Product Version 9.1 July 2009 Once you added your constraints, also do a SETUP> report net constraint to make sure that the constraint has been added. Using Load and Constraint Sets (p. 277) = Using Load Steps (in ANSYS) Coordinate Systems (p. 278-80) = Local Coordinate Systems, Rotated Nodal Directions (in ANSYS) CONSTRAINTS (p. 280-87) Constraints remove spatial DOF's from the model. Switch to LEC mode. The IC Compiler tool uses logic libraries to provide timing and functionality information for all. SETUP > add black box /Top/I3 -golden // Top3/I3 instance 를 blackbox 로 봅니다. Date V er sion Re vision ForIODELAY_GROUP(IODELAYGroup)constraint,addedinformationunderLimitations withLOCandArchitectureSupport ForAreaGroup(AREA_GROUP)constraint . Map the Points and Compare. 1/30/2006 8 Example of Design Failure BART Ticket Machines 1/30/2006 9 1/30/2006 10 1/30/2006 11 Example of Design Failure BART Ticket Machines * Allow riders to buy BART tickets or add fare * Takes ATM cards, credit cards, & cash Problems * One "path" of . Truss (spar) elements are a subset of beam-type elements which can't carry moments (i.e., have no bending DOF's). There could be a set and reset pins also but here for simplicity we are not including those in our discussion. The Synopsys Design Constraints (SDC) [7, 8] and the Tcl synthesis script are given in the Appendix A and B. 形式验证LEC的流程 . • Provide critical design analysis and feedback to customers regarding . 2033311 add pin binding does not auto map all pin bindings 2034465 partition EQ in 18.20-p100 and NEQ in 18.20-s200 2035068 elab design gave bogus warnings on config file Encounter Conformal Equivalence Checking Reference Manual Command Reference May 2008 44 Product Version 7.2 ADD DYNAMIC CONSTRAINTS ADD DYnamic Constraints <0 | 1> <identifier> [-INStance | -Pin | -Net | -ID] [-Golden | -Revised | -Both] (LEC Mode) Adds dynamic constraints for use with the PROVE command. add pin constraint 0 scan\_en -revised add instance constraint 0 U1 -revised. 002158540 report_timing -lint is running for 6hrs on isp_sif, long timer update runtime issue in elab stage. define_dft shift_enable -name scan_enable -active high SCAN_EN_IN => SCAN_EN_IN is defined as shift_enable and referred to as "scan_enable". add examine point-all examine. The tool considers exclude pins only in calculation and optimizations for design rule constraints. The culprit gates were hiding somewhere. ming.sdc )and)?ming.tcl)) • Add)synopsysdesign contraints( sdc))file)to) the)project - Assignments)>Sengs) - TimeQuest)Timing)Analyzer)> ming.sdc ) You can view a sample Quartus II software generated script in "Conformal Dofile/Script Example" on page 17 . 1. SDC is a short form of "Synopsys Design Constraint". 1. gate_id | module_pinname | pin_pathname> [-Drc | -Iddq] This command defines constraints on nets that must be satisfied during pattern generation. •Design environment & constraints •Major synthesis commands •Gate-level simulation 11.23 D. Markovic / Slide 24 Large Area Small Short Long Delay • • • • • • Synthesis is Constraint-Driven Courtesy: Synopsys You set the goals (through design constraints) DC optimizes the design to meet your goals 11.24 "diagnose" after compare Hierarchical vs. flattened designs Two system modes Setup mode LEC mode Usage (command line) SET SYstem . Encounter Conformal Equivalence Checking Reference Manual Command Reference May 2008 44 Product Version 7.2 ADD DYNAMIC CONSTRAINTS ADD DYnamic Constraints <0 | 1> <identifier> [-INStance | -Pin | -Net | -ID] [-Golden | -Revised | -Both] (LEC Mode) Adds dynamic constraints for use with the PROVE command. Change to LEC mode. Exclude pin: Exclude pin are clock tree endpoints that are excluded from clock tree timing calculation and optimization. This time the Revised Design has been created by changing some Constarints in DC. add ignore output scan_out -golden/revised. After all of the setup constraints and modeling directives are added, the device should be toggled to LEC mode for mapping key factors and comparability. To do this, use add pin constraints and add ignore outputs commands. The availability of a wide range of products with an option to compare them based on features . !仿真覆盖率低，且后仿非常慢。 常用工具： Synopsys: Formality Candence: LEC 形式验,最新全面的IT技术教程都在跳墙网。 比较的结果报告. Basics of IC Compiler.
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