Measure Twice, Cut Once

In a previous post, I observed that, as I increased the number of cores in my GPGPU, performance began to plateau and hardware threads spent more time stalled because their store queue was full. I speculated that the latter might cause the latter, although that wasn't definitive. The current implementation only has a single store queue entry for each thread. One optimization I've been considering is adding more store queue entries, but this has subtle and complex design tradeoffs.