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[AMD] MORI-EP inter kernel type switch (#18437)

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Co-authored-by: HAI <hixiao@gmail.com>
This commit is contained in:
Duyi-Wang
2026-02-16 12:59:39 +08:00
committed by GitHub
parent bc79a64d3a
commit 5ddc84e33e
4 changed files with 18 additions and 5 deletions
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2
docker/rocm.Dockerfile
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@@ -70,7 +70,7 @@ ARG ENABLE_MORI=0
ARG NIC_BACKEND=none
ARG MORI_REPO="https://github.com/ROCm/mori.git"
ARG MORI_COMMIT="b0dce4beebeb1f26c784eee17d5fd9785ee9447f"
ARG MORI_COMMIT="20920706a9004018dbd87c7387f207d08d0e05af"
# AMD AINIC apt repo settings
ARG AINIC_VERSION=1.117.5

2
docker/rocm720.Dockerfile
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@@ -94,7 +94,7 @@ ARG ENABLE_MORI=0
ARG NIC_BACKEND=none
ARG MORI_REPO="https://github.com/ROCm/mori.git"
ARG MORI_COMMIT="b0dce4beebeb1f26c784eee17d5fd9785ee9447f"
ARG MORI_COMMIT="20920706a9004018dbd87c7387f207d08d0e05af"
# AMD AINIC apt repo settings
ARG AINIC_VERSION=1.117.5

1
docs/references/environment_variables.md
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@@ -76,6 +76,7 @@ SGLang supports various environment variables that can be used to configure its
| --- | --- | --- |
| `SGLANG_MORI_FP8_DISP` | Use FP8 for dispatch | `"false"` |
| `SGLANG_MORI_NUM_MAX_DISPATCH_TOKENS_PER_RANK` | Maximum number of dispatch tokens per rank for MORI-EP buffer allocation | `4096` |
| `SGLANG_MORI_DISPATCH_INTER_KERNEL_SWITCH_THRESHOLD` | Threshold for switching between `InterNodeV1` and `InterNodeV1LL` kernel types. `InterNodeV1LL` is used if `SGLANG_MORI_NUM_MAX_DISPATCH_TOKENS_PER_RANK` is less than or equal to this threshold; otherwise, `InterNodeV1` is used. | `256` |
| `SGLANG_MORI_QP_PER_TRANSFER` | Number of RDMA Queue Pairs (QPs) used per transfer operation | `1` |
| `SGLANG_MORI_POST_BATCH_SIZE` | Number of RDMA work requests posted in a single batch to each QP | `-1` |
| `SGLANG_MORI_NUM_WORKERS` | Number of worker threads in the RDMA executor thread pool | `1` |

18
python/sglang/srt/layers/moe/token_dispatcher/moriep.py
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@@ -85,9 +85,21 @@ class EpDispatchConfig:
rdma_block_num: int
def get_ep_dispatch_configs():
def get_ep_dispatch_configs(num_max_dispatch_tokens_per_rank: int = 4096):
import mori
# Selects the inter-node kernel. `InterNodeV1LL` is used if `num_max_dispatch_tokens_per_rank`
# is less than or equal to the threshold, otherwise `InterNodeV1` is used. The threshold defaults to 256.
inter_kernel_switch_threshold = get_int_env_var(
"SGLANG_MORI_DISPATCH_INTER_KERNEL_SWITCH_THRESHOLD", 256
)
inter_kernel_type = (
mori.ops.EpDispatchCombineKernelType.InterNodeV1LL
if num_max_dispatch_tokens_per_rank <= inter_kernel_switch_threshold
else mori.ops.EpDispatchCombineKernelType.InterNodeV1
)
return {
EpMode.INTRA_NODE: EpDispatchConfig(
kernel_type=mori.ops.EpDispatchCombineKernelType.IntraNode,
@@ -96,7 +108,7 @@ def get_ep_dispatch_configs():
rdma_block_num=0,
),
EpMode.INTER_NODE: EpDispatchConfig(
kernel_type=mori.ops.EpDispatchCombineKernelType.InterNodeV1,
kernel_type=inter_kernel_type,
warp_num_per_block=8,
block_num=64,
rdma_block_num=32,
@@ -130,7 +142,7 @@ def init_mori_op(
)
mode = EpMode.INTRA_NODE if world_size <= 8 else EpMode.INTER_NODE
cfg = get_ep_dispatch_configs()[mode]
cfg = get_ep_dispatch_configs(num_max_dispatch_tokens_per_rank)[mode]
kernel_type = cfg.kernel_type
warp_num_per_block = cfg.warp_num_per_block