For a mountain with no water (no tarns, nothing), my inclination would be to base camp at the bottom and climb the mountain as a day-hike. Still need to carry your water, but not all of your gear, and water needed for just "during the day" is surely a lot less than if you were spending the night.

It really depends on the mountain and associated conditions of course!
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Brian Lewis
http://postholer.com/brianle