question about fp8fp4 mega moe weights load

[wukong1992]

why smem_sfb full barrier need to * 2:

DeepGEMM/deep_gemm/include/deep_gemm/impls/sm100_fp8_fp4_mega_moe.cuh

Line 757 in 54e2261

shared_storage.full_barriers[stage_idx].arrive_and_expect_tx(sizeof(SharedStorage::smem_b[0]) + sizeof(SharedStorage::smem_sfb[0]) * 2);

[xuzhiyuan1]

2-SM UMMA