SSD Capacity Is Not Throughput: What FlashMoE Changes About Local MoE Serving
TL;DR for operators Moving inactive MoE experts to SSD can make an oversized sparse model fit when the full checkpoint does not fit comfortably in DRAM. But every expert missing from fast memory must be fetched before decoding can continue. In FlashMoE’s evaluated system, an expert load takes roughly 3 milliseconds and expert loading accounts for more than 70% of decoding time. SSD therefore solves capacity only if the cache avoids enough expensive misses. ...