What is the difference between a computation and a medical release for a state inmate?

Answer 1

I believe that your mean communtation. That means that the governor has changed the sentence and made it shorter or less severe.

A medical release is usually granted to a prisoner whose medical condition is so bad that they are not seen as a risk to society any longer.

Answer 2

I think you mean commutation (computation is a mathematical process). A commutation shortens a sentence, or lowers it to a lesser degree, i.e. death penalty is lowered to life in prison. Commutation would not be based on a medical problem. Commutation could also mean a release where the inmate is released but not paroled.