Assess how to reduce testing computational costs

[johnjasa]

Assess how to reduce testing computational costs

Right now, CI testing takes >30 mins, maybe more for Windows machiens.
It is fantastic that we have such exhaustive tests, but there's a chance we have some redundant or unnecessary tests that lead to unnecessarily inflated CI runtimes.

We should:

• assess if the existing tests can be intelligently combined to reduce computational burden
• potentially look at breaking up unit, regression, and integration tests into different CI pipelines so they run in parallel
• reduce size and scope of examples we test
• reduce model fidelity where reasonable