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FLOOXS is a Technology Computer Aided Design ([http://en.wikipedia.org/wiki/Technology_CAD TCAD]) tool used for [http://en.wikipedia.org/wiki/Semiconductor_process_simulation semiconductor process modeling] and [http://en.wikipedia.org/wiki/Semiconductor_device_modeling semiconductor device modeling] that will descretize and solve a set of [http://en.wikipedia.org/wiki/Partial_differential_equation partial] and [http://en.wikipedia.org/wiki/Ordinary_differential_equation ordinary differential equations] on a 1, 2 or 3D mesh using [http://en.wikipedia.org/wiki/Numerical_analysis numerical methods] such as the Finite Element Method ([http://en.wikipedia.org/wiki/Finite_element_method FEM]) and the Finite Volume Method ([http://en.wikipedia.org/wiki/Finite_volume_method FVM]). FLOOXS is built in [http://en.wikipedia.org/wiki/C%2B%2B c++], and uses several well-known math packages such as [http://en.wikipedia.org/wiki/Basic_Linear_Algebra_Subprograms BLAS], [http://dietandlossweight.com/wiki/LAPACK LAPACK], and [http://en.wikipedia.org/wiki/Portable,_Extensible_Toolkit_for_Scientific_Computation PETSC] to handle the linear algebra. The user-interface is command-line [http://en.wikipedia.org/wiki/Tcl tcl] (tool control language), a scripting language, with additional FLOOXS-specific [[Alagator Language Description | Alagator]] commands added in.
FLOOXS is a Technology Computer Aided Design ([http://en.wikipedia.org/wiki/Technology_CAD TCAD]) tool used for [http://en.wikipedia.org/wiki/Semiconductor_process_simulation semiconductor process modeling] and [http://en.wikipedia.org/wiki/Semiconductor_device_modeling semiconductor device modeling] that will descretize and solve a set of [http://en.wikipedia.org/wiki/Partial_differential_equation partial] and [http://en.wikipedia.org/wiki/Ordinary_differential_equation ordinary differential equations] on a 1, 2 or 3D mesh using [http://en.wikipedia.org/wiki/Numerical_analysis numerical methods] such as the Finite Element Method ([http://en.wikipedia.org/wiki/Finite_element_method FEM]) and the Finite Volume Method ([http://en.wikipedia.org/wiki/Finite_volume_method FVM]). FLOOXS is built in [http://en.wikipedia.org/wiki/C%2B%2B c++], and uses several well-known math packages such as [http://en.wikipedia.org/wiki/Basic_Linear_Algebra_Subprograms BLAS], [http://dietandlossweight.com/wiki/LAPACK LAPACK], and [http://en.wikipedia.org/wiki/Portable,_Extensible_Toolkit_for_Scientific_Computation PETSC] to handle the linear algebra. The user-interface is command-line [http://en.wikipedia.org/wiki/Tcl tcl] (tool control language), a scripting language, with additional FLOOXS-specific [[Alagator Language Description | Alagator]] commands added in.


= Running FLOOXS =
==Developers and History==
*[[Developers and Contributors]]
*[[History]]
 
==Code Description==
* [[What is Under the Hood - Detailed]] - A detailed description of how the c++ code is organized, how the finite element methods is implemented, what physics currently exist and how to add more.


== Installation ==
== Installation ==


* [[Installation from Debian package]]
* [[Installation on Mac OSX Mojave to Big Sur]]
* [[Installation on Mac OSX not Lion yet]] - notes from v 4.1 ...
* [[Installation on Mac OSX not Lion yet]] - notes from v 4.1 ...
* [[Installation on Ubuntu 10.10]] - Notes from a 64-bit Ubuntu 10.10 (Maverick Meerkat) current version FLOOXS installation with both Intel and AMD processors on 11/05/2010.
* [[Installation on Ubuntu 10.10]] - Notes from a 64-bit Ubuntu 10.10 (Maverick Meerkat) current version FLOOXS installation with both Intel and AMD processors on 11/05/2010.
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* [[Installation on RedHat]] - (this version is outdated). Installation help and notes created as I did a clean install on a RedHat linux system. Your mileage may vary.
* [[Installation on RedHat]] - (this version is outdated). Installation help and notes created as I did a clean install on a RedHat linux system. Your mileage may vary.
* [[Installation on Windows Linux Subsystem]] - Notes from Ubuntu 18.04 Subsystem on Windows 64-bit.
* [[Installation on Windows Linux Subsystem]] - Notes from Ubuntu 18.04 Subsystem on Windows 64-bit.
* Ubuntu 18.04 - See [[Installation on Windows Linux Subsystem]], same instructions from get flooxs on.
* Ubuntu 18.04 - See [[Installation on Windows Linux Subsystem]], same instructions from "get flooxs" on
* [[Installation on CentOS 7]] - Includes instructions for build as well as a build script
* [[Build Triangle]] - optional alternative to gmsh
 
[[:Media:PortNotes.pdf|Porting Notes]] from a 2016 port of the 2008 version. Thanks to Rex Lowther for sharing!
 
= Running FLOOXS =


== Executing FLOOXS ==
== Executing FLOOXS ==
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==Overview and Basic Concepts==
==Overview and Basic Concepts==
* [[Tcl]] - Tool Control Language is the main scripting language used to control local variables (set), do simple calculations (expr), define procedures (functions or routines), and accomplish basic read/write file operations (file). It sits on top of c++.
* [[Tcl]] - Tool Control Language is the main scripting language used to control local variables (set), do simple calculations (expr), define procedures (functions or routines), and accomplish basic read/write file operations (file). It sits on top of c++.
* [[Setting Parameters]] - how parameters work
* [[Conventions]] - how parameters work
* [[Alagator]] - Alagator is the scripting language created specifically for FLOOXS to describe the differential equations used in process and device simulation. It sits on top of tcl.
* [[Alagator]] - Alagator is the scripting language created specifically for FLOOXS to describe the differential equations used in process and device simulation. It sits on top of tcl.
*[[Units in FLOOXS]]
*[[Units in FLOOXS]]
* [[Support Scripts]] - Built in tcl procedures that support simulation.


=Examples and Tutorials=
==Examples and Tutorials==


* [[Workflow]]
* [[Workflow]]
== Tutorial ==
* [[Process Tutorial]] - floops
* [[Process Tutorial]] - floops
* [[Device Tutorial]] - floods
* [[Device Tutorial]] - floods
* [[Coupled Device and Process Tutorial]]
If you've never used FLOOXS before, start here. Work through these examples and exercises to learn the basics of FLOOXS. The example decks here contain line-by-line explanations, and are organized in such a way as to introduce important concepts in increasing complexity. Full unannotated examples are in the [[Main_Page#Full_FLOOXS_Examples | full examples]] section.
If you've never used FLOOXS before, start here. Work through these examples and exercises to learn the basics of FLOOXS. The example decks here contain line-by-line explanations, and are organized in such a way as to introduce important concepts in increasing complexity. Full unannotated examples are in the [[Main_Page#Full_FLOOXS_Examples | full examples]] section.


= Troubleshooting =
== Full FLOOXS Examples==
Convergence:
Having problems with solution convergence? If so, refer to this [[Convergence|convergence FAQ page]].
 
Check All Your Equations - Use this [[PrintEqns Procedure | PrintEqns]] procedure
 
= Full FLOOXS Examples=
These are full working decks that can be used as templates. If you would like line-by-line explanation of these examples, see the [[Main_Page#Tutorial | tutorial]] section of this manual.
These are full working decks that can be used as templates. If you would like line-by-line explanation of these examples, see the [[Main_Page#Tutorial | tutorial]] section of this manual.


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* [[Complex Examples]] - Complex Examples for device and process
* [[Complex Examples]] - Complex Examples for device and process
* [[AlGaN/GaN HEMT]] - reliability simulation results
* [[AlGaN/GaN HEMT]] - reliability simulation results
== Troubleshooting ==
Convergence:
Having problems with solution convergence? If so, refer to this [[Convergence|convergence FAQ page]].


= Command Reference Library =
= Command Reference Library =
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[[Command Reference Library]]
[[Command Reference Library]]
= Development Activities=
FLOOXS is under development at UF and used around the world.
==Code Description==
* [[What is Under the Hood - Detailed]] - A detailed description of how the c++ code is organized, how the finite element methods is implemented, what physics currently exist and how to add more.
==Contributors==
Faculty
Mark Law, University of Florida
Ph.D Students
Daniel Cummings - 2010 - danieljc@ufl.edu (Device Simulation: Strained-Si, Single-Event Effects)
David Horton - 2013 - davidchorton@gmail.com (Device Simulation: Mechanisms of degradation of AlGaN/GaN devices, OFF state strain-driven diffusion, ON state hot-electron effects)
Nicole Rowsey - 2011 - nrowsey@ufl.edu (Device Simulation: TID Effects, Multi-Gate, Charge Qubit Devices)
Ashish Kumar - 2013 - email- ashishk@ufl.edu (Process Simulation: Silicide Growth, Dopant Segregation, Stress and Strain Analysis)
Madeline Sciullo - 2015 - email- madelinesciullo@ufl.edu (Process Simulation: Carbon Model Development; Device Simulation: SRH PN Diode (1D), AlGaN/GaN HEMT Chemical Sensors).
Shrijit Mukherjee - 2015 - email- shrijitm10@ufl.edu (Device Simulation: Sinusoidal Steady State Analysis, Interface trapping).
Henry Aldridge - 2016 - email- aldridhl@ufl.edu (Process Simulation: Dopant Diffusion and Activation in III-V Semiconductors).
Post-Docs
Michelle Griglione - email
Erin Patrick - ee1[at]ufl.edu
Past Students and Post-Docs
Intel Development Team
Martin Giles, Stephen Cea, Hal Kennel, Aaron Lilak, and Patrick Keys. Intel is feeding back bug fixes and enhancements. Steve Morris - we miss you!
Collaborators
Rex Lowther, Harris. Grid and diffusion discretizations, Cylindrical Coordinates; Mike Morris, Steve Morris, Al Tasch, University of Texas, Austin. Dual pearson implant models for boron, bf2, and arsenic; Goodwin Chin, IBM. Original ideas for hierarchical mesh; Tim Davis, University of Florida. UMF factorization code.
= Copyright and Redistribution =
This software and manual is copyrighted by the Mark Law, University of Florida Electrical and Computer Engineering department. It is intended for internal educational and research and development purposes only. Any use of any part of this software in any commercial package needs to be negotiated separately. Several of the implant models are copyrighted by Al Tasch from The University of Texas at Austin. It uses public domain software tcl/tk and various linear algebra packages.
==Authorization for Download of 2008==
This version is best if you wish to do Si process simulation - implant, diffusion, shallow junction formation.
To obtain the 2008 release, you must complete the [[:Media:license2008.pdf|license form]] scan/email it to Dr. Mark E. Law at law at ece dot ufl dot edu.
==Authorization for Download of 2011==
This version is best if you wish to simulate device / sensor performance.
To obtain the 2011 release, you must complete the [[:Media:license2011.pdf|license form]] andscan/email it to Dr. Mark E. Law at law at ece dot ufl dot edu.

Latest revision as of 19:50, 29 June 2023

Introduction: What is FLOODS/FLOOPS?

FLOOXS is a Technology Computer Aided Design (TCAD) tool used for semiconductor process modeling and semiconductor device modeling that will descretize and solve a set of partial and ordinary differential equations on a 1, 2 or 3D mesh using numerical methods such as the Finite Element Method (FEM) and the Finite Volume Method (FVM). FLOOXS is built in c++, and uses several well-known math packages such as BLAS, LAPACK, and PETSC to handle the linear algebra. The user-interface is command-line tcl (tool control language), a scripting language, with additional FLOOXS-specific Alagator commands added in.

Developers and History

Code Description

  • What is Under the Hood - Detailed - A detailed description of how the c++ code is organized, how the finite element methods is implemented, what physics currently exist and how to add more.

Installation

Porting Notes from a 2016 port of the 2008 version. Thanks to Rex Lowther for sharing!

Running FLOOXS

Executing FLOOXS

  • Startup Script - set environment variables and alias paths (running FLOOXS for the first time)

Overview and Basic Concepts

  • Tcl - Tool Control Language is the main scripting language used to control local variables (set), do simple calculations (expr), define procedures (functions or routines), and accomplish basic read/write file operations (file). It sits on top of c++.
  • Conventions - how parameters work
  • Alagator - Alagator is the scripting language created specifically for FLOOXS to describe the differential equations used in process and device simulation. It sits on top of tcl.
  • Units in FLOOXS
  • Support Scripts - Built in tcl procedures that support simulation.

Examples and Tutorials

If you've never used FLOOXS before, start here. Work through these examples and exercises to learn the basics of FLOOXS. The example decks here contain line-by-line explanations, and are organized in such a way as to introduce important concepts in increasing complexity. Full unannotated examples are in the full examples section.

Full FLOOXS Examples

These are full working decks that can be used as templates. If you would like line-by-line explanation of these examples, see the tutorial section of this manual.

Troubleshooting

Convergence: Having problems with solution convergence? If so, refer to this convergence FAQ page.

Command Reference Library

This contains a command reference, in Unix man page style for each command in the program.

Command Reference Library

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