Student or Learner
I have an old program and I am not sure if the following sentence is a good way to describe it. Please have a look and help me correct it.
An existing program for vibration analysis of rotor-bearing systems was written in Fortran and therefore computationally expensive.
The program hasn't been modified at all. So I want to emphasize that it IS still computationally expensive and preferably in one sentence.
An existing program for vibration analysis of rotor-bearing systems was written in Fortran and therefore is computationally expensive.
That little addition will make sure your point gets across. I think the sentence is fine without it, but it doesn't hurt.