Dear all,
I am using SNESSolve to solve PDEs. During the iterative process, PETSc prints the norm of the SNES function at each iteration. I would like to understand what this SNES function norm actually represents. I tried computing it myself after the solution was obtained, but I couldn’t match the value reported by PETSc.
My question may be naive, but I am new to FreeFEM/PETSc-based computations, and I couldn’t find detailed documentation on this topic.
Thank you for your help!
Best regards,
Ilyan