Heat-Example with PETSc

21.08.2002


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Inhaltsverzeichnis

Heat-Example with PETSc

Heat Example

Discretization

From PDE to the linear difference equations system

Boundary conditions in the linear difference equations system

Matrix notation

Matrix notation, continued

Heat example: boundary and solution

Example with n=m=4, general boundary

Example with n=m=4, with solution & boundary u(x,y) := x

Solving heat equation with PETSc *)

Initialization of PETSc

Initialization of matrix A

Initialization of u, b, x

Initializing the values of b (and u)

Solving Ax=b

Printing the solution

Printing the solution via X Window

Check solution and clean up

Program start

Other Options

Runtime Script Example, I.

Runtime Script Example, II.

Runtime Script Example, III.

Output Example

Makefile

Installation

Customized installation

Customized installation

Example - /bmake/linux/packages

Example - /bmake/linux/packages

Summary

Practical

Results for heat_petsc (300x300) time

PPT-Folie

Autor:Rolf Rabenseifner