Try the following script:
Code:
import viz
viz.go()
viz.MainWindow.setView( viz.addView(scene=viz.addScene()) )
LeftWindow = viz.addWindow(pos=(0.125,0.75),size=(0.25,0.5))
LeftWindow.stereo(viz.STEREO_LEFT)
RightWindow = viz.addWindow(pos=(0.625,0.75),size=(0.25,0.5))
RightWindow.stereo(viz.STEREO_RIGHT)
viz.add('gallery.ive')