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Transcript of OCEAN Reference - Georgia Institute of Technologymgh- · PDF fileOCEAN Reference April 2001 3...

  • OCEAN Reference

    Product Version 4.4.6April 2001

  • 1999-2001 Cadence Design Systems, Inc. All rights reserved.Printed in the United States of America.

    Cadence Design Systems, Inc., 555 River Oaks Parkway, San Jose, CA 95134, USA

    Trademarks: Trademarks and service marks of Cadence Design Systems, Inc. (Cadence) contained in thisdocument are attributed to Cadence with the appropriate symbol. For queries regarding Cadences trademarks,contact the corporate legal department at the address shown above or call 1-800-862-4522.

    All other trademarks are the property of their respective holders.

    Restricted Print Permission: This publication is protected by copyright and any unauthorized use of thispublication may violate copyright, trademark, and other laws. Except as specified in this permission statement,this publication may not be copied, reproduced, modified, published, uploaded, posted, transmitted, ordistributed in any way, without prior written permission from Cadence. This statement grants you permission toprint one (1) hard copy of this publication subject to the following conditions:

    1. The publication may be used solely for personal, informational, and noncommercial purposes;2. The publication may not be modified in any way;3. Any copy of the publication or portion thereof must include all original copyright, trademark, and other

    proprietary notices and this permission statement; and4. Cadence reserves the right to revoke this authorization at any time, and any such use shall be

    discontinued immediately upon written notice from Cadence.

    Disclaimer: Information in this publication is subject to change without notice and does not represent acommitment on the part of Cadence. The information contained herein is the proprietary and confidentialinformation of Cadence or its licensors, and is supplied subject to, and may be used only by Cadences customerin accordance with, a written agreement between Cadence and its customer. Except as may be explicitly setforth in such agreement, Cadence does not make, and expressly disclaims, any representations or warrantiesas to the completeness, accuracy or usefulness of the information contained in this document. Cadence doesnot warrant that use of such information will not infringe any third party rights, nor does Cadence assume anyliability for damages or costs of any kind that may result from use of such information.

    Restricted Rights: Use, duplication, or disclosure by the Government is subject to restrictions as set forth inFAR52.227-14 and DFAR252.227-7013 et seq. or its successor.

  • OCEAN Reference

    Contents

    Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15Related Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15Typographic and Syntax Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

    SKILL Syntax Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

    1Introduction to OCEAN. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19Types of OCEAN Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20OCEAN Online Help . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20OCEAN Syntax Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

    Common SKILL Syntax Characters Used in OCEAN . . . . . . . . . . . . . . . . . . . . . . . . 21Parentheses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21Quotation Marks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22Single Quotation Marks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23Question Mark . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24Data Types Used in OCEAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24OCEAN Return Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25Design Variables in OCEAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26outputs() in OCEAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

    Parametric Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27Data Access Without Running a Simulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

    Distributed Processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28Blocking and Nonblocking Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

    2Using OCEAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31OCEAN Use Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31Using OCEAN Interactively . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

    Using OCEAN from a UNIX Shell . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32Using OCEAN from the CIW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

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  • OCEAN Reference

    Interactive Session Demonstrating the OCEAN Use Model . . . . . . . . . . . . . . . . . . . . 33Creating OCEAN Scripts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

    Creating Scripts Using Sample Script Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34Creating Scripts from the Affirma Analog Circuit Design Environment . . . . . . . . . . . 34Selectively Creating Scripts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34Loading OCEAN Scripts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

    Running Multiple Simulators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38OCEAN Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

    3Introduction to SKILL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41The Advantages of SKILL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41Naming Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42Arithmetic Operators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42Scaling Factors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42Relational and Logical Operators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

    Relational Operators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44Logical Operators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

    SKILL Syntax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46Special Characters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46White Space . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47Comments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47Role of Parentheses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48Line Continuation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

    Arithmetic and Logical Expressions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49Constants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49Variables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

    4Working with SKILL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53Skill Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53Data Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

    Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54Atoms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55Constants and Variables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

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  • OCEAN Reference

    Strings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55Arrays . . . . . .