Nutty Raspberry Fluff

3 ounces raspberry gelatin
1 cup boiling water
20 ounces crushed pineapple
1 (3 3/4 ounce) box instant vanilla pudding
1/4 cup pecans, chopped
9 ounces Cool Whip
1 1/2 cups miniature marshmallows

Dissolve gelatin in boiling water. Chill until almost set. Add all other ingredients, mixing each individually. Chill for at least 1 hour before serving.