Update-Skipping “Optimization”
•Added SLI overhead:

–GPU 1 stalls until GPU 0 RTT finishes and transfers
–Or GPU 1 duplicates RTT operation
–Might as well do right thing when on SLI
Frame n
Frame n+1
Frame n+2
Frame n+3
Needs RTT
Needs RTT
GPU 0
GPU 1
GPU 0
GPU 1
RTT
Use T
Use T
RTT
Use T
Use T