[adrian.delser]

Hello everyone, my first post here so if I'm in the wrong subforum let me know.

I'd like to extract the time taken to complete individual steps in a solver (in my case I'd like to see how much of the total computation time is taken by the velocity/pressure correction steps of the piso algorithm in pisoFoam or similarly the time taken to solve the poisson pressure equation of the SIMPLE algorithm in solvers that use it).

From experience this iterative step takes a significant percentage of the total time, but I'd like to check how long exactly. The goal is to develop an alternate (neural network) method of correcting the uncorrected velocity field, and so I'll also need to figure out how to extract the uncorrected field from pisoFoam (or other solvers eventually) and inject it back into pisoFoam for time advancement once corrected by the new method, although I'll create a new thread for that question.

As a heads up, I am fairly new to both openfoam (v9 or v2106) and C++.

Thanks!