Skyjob
RHS continues to try and restart engines, read QRH, actions drills and advises if there is a requirement to "dive for speed" only when QRH dictates...
Don't rush, give yourself more time by staying aloft longer and preparing for the worst rather then diving down.
900-ER
I personally would try two attempts, after that, start pitching for required speed and attempting again whilst doing the QRH.
I disagree with both the above statements.
Jet engines are all about mass airflow.
I would be taking control and pitching to just below the barbers pole ( assuming we're in the cruise) while the F/O carried out the memory items. I would be doing that in fairly quick order once the identification process was complete in order to keep the 'energy in the core' as Imbracable put it.