Bring A Large Pot Of Lightly Salted Water To A Boil. Add Pasta And Cook For 8 To 10 Minutes Or Until Al Dente; Drain. Heat Olive Oil In A Skillet Over Medium Heat. Stir In The Onions, Green Onions, And Pesto. Cook Until Tender. Mix In Salmon, And Cook Until Heated Through. Stir In 1/2 The Parmesan Cheese, And Continue Cooking 5 Minutes. Toss With The Cooked Pasta, And Sprinkle With Remaining Parmesan Cheese To Serve.