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fix:buffer control #361

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Merged
iforgetmyname merged 1 commit into from
Feb 3, 2026
Merged

fix:buffer control #361

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4 changes: 2 additions & 2 deletions csrc/deepep/deep_ep.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -942,14 +942,14 @@ Buffer::low_latency_dispatch(const at::Tensor &x, const at::Tensor &topk_idx,

auto num_tokens = static_cast<int>(new_x.size(0)), hidden = static_cast<int>(new_x.size(1));
auto num_scales = hidden / 128, num_topk = static_cast<int>(new_topk_idx.size(1));
auto num_local_experts = num_experts / (num_ranks - shared_expert_rank_num);
int32_t num_local_experts = num_experts / (num_ranks - shared_expert_rank_num);
int64_t global_bs = num_max_dispatch_tokens_per_rank * num_ranks;
auto num_max_tokens = 0;
if (rank < shared_expert_rank_num) {
num_max_tokens = global_bs / shared_expert_rank_num;
num_local_experts = 1;
} else { // moe expert
num_max_tokens = global_bs * num_local_experts;
num_max_tokens = global_bs * std::min(num_topk, num_local_experts);
}
auto max_size = std::max(num_tokens * num_topk, num_max_tokens * 128);

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