The problem
At what point does another worker add waiting instead of useful throughput?
What current research shows
Shared DRAM research shows that bank-level parallelism, request interference, and scheduling policy affect both throughput and fairness. Once channels and banks are saturated, more requests compete for finite service capacity.
Where the evidence stops
Saturation depends on access pattern, read/write mix, row locality, channel count, and the memory controller.
What Valen Systems is testing
Find the saturation point using queue depth, bank parallelism, bandwidth, stall cycles, useful work, and energy measurements.