I've encountered some latency issues with allreduce on transformer models due to vocabulary sizes when communication have to cross PCIe lanes. Increasing batch

I've encountered some latency issues with allreduce on transformer models due to vocabulary sizes when communication have to cross PCIe lanes. Increasing batch size helps a lot, but low-latency & high-throughput is universally more helpful to lift these minor concerns (I don't really want to care about my batch size to improve allreduce performance). Hence worried not only throughput, but also latency on consumer-grade 10ghe equipments.