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Use one qp per sm for internode normal kernels (#181)

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let the sender SM use the channel_id, and the receiver SM use channel_id + num_channels
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Zhicheng Wu 2025-06-13 14:37:59 +08:00 committed by GitHub
parent 21efbe9b48
commit 05df5554ff
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GPG Key ID: B5690EEEBB952194
2 changed files with 3 additions and 3 deletions
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4
csrc/kernels/internode.cu
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@ -831,7 +831,7 @@ dispatch(int4* recv_x, float* recv_x_scales, int64_t* recv_topk_idx, float* recv
// Update remote head
if (min_head != std::numeric_limits<int>::max() and min_head >= last_head + num_max_rdma_chunked_send_tokens and lane_id < kNumRDMARanks) {
nvshmemi_ibgda_amo_nonfetch_add(rdma_channel_head.buffer(rdma_rank), min_head - last_head,
translate_dst_rdma_rank<kLowLatencyMode>(lane_id, nvl_rank), channel_id, lane_id == rdma_rank);
translate_dst_rdma_rank<kLowLatencyMode>(lane_id, nvl_rank), channel_id + num_channels, lane_id == rdma_rank);
last_head = min_head;
}
@ -1563,7 +1563,7 @@ combine(int4* combined_x, float* combined_topk_weights,
min_head = min(min_head, rdma_receiver_rdma_head[i][dst_rdma_rank]);
if (min_head != std::numeric_limits<int>::max() and min_head >= last_rdma_head + num_max_rdma_chunked_send_tokens and lane_id < kNumRDMARanks) {
nvshmemi_ibgda_amo_nonfetch_add(rdma_channel_head.buffer(rdma_rank), min_head - last_rdma_head,
translate_dst_rdma_rank<kLowLatencyMode>(dst_rdma_rank, nvl_rank), channel_id, dst_rdma_rank == rdma_rank);
translate_dst_rdma_rank<kLowLatencyMode>(dst_rdma_rank, nvl_rank), channel_id + num_channels, dst_rdma_rank == rdma_rank);
last_rdma_head = min_head;
}
} else {

2
tests/test_internode.py
View File

@ -225,7 +225,7 @@ def test_loop(local_rank: int, num_local_ranks: int):
ll_num_tokens, ll_hidden, ll_num_experts, ll_num_topk = 16, 5120, 256, 9
num_sms = 24
num_qps_per_rank = max(num_sms // 2, ll_num_experts // num_ranks if test_ll_compatibility else 0)
num_qps_per_rank = max(num_sms, ll_num_experts // num_ranks if test_ll_compatibility else 0)
buffer = deep_ep.Buffer(group, int(1e9), int(1e9), low_latency_mode=test_ll_compatibility,
num_qps_per_rank=num_qps_per_rank)