[petsc-users] Using matrix-free with KSP

Tu, Jiannan Jiannan_Tu at uml.edu
Tue May 24 12:21:04 CDT 2022

I want to use a matrix-free matrix to solve a large linear equation system because the matrix is too large to be stored. Petsc user manual describes matrix-free method for SNES with examples. The matrix-free matrices section explains how to set up such a matrix, but I can't find any example of matrix-free method with KSP. I am wondering how to apply the method to KSP iterative solver in parallel.

I greatly appreciate your help for me to understand this topic.

Jiannan Tu
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