feat: enable per_node

Author: ivanium

benchmarks/multi_node/srt-slurm-recipes/vllm/deepseek-v4/agentic/disagg-gb200-1p1d-dep8-dep12-agentic.yaml

@@ -50,6 +50,7 @@ frontend:
 
 backend:
   type: vllm
+  dp_launch_mode: per_node
   connector: "null"
   kv_events_config:
     prefill: true

benchmarks/multi_node/srt-slurm-recipes/vllm/deepseek-v4/agentic/disagg-gb200-1p1d-dep8-dep8-agentic.yaml

@@ -50,6 +50,7 @@ frontend:
 
 backend:
   type: vllm
+  dp_launch_mode: per_node
   connector: "null"
   kv_events_config:
     prefill: true

benchmarks/multi_node/srt-slurm-recipes/vllm/deepseek-v4/agentic/disagg-gb200-2p1d-dep8-dep12-agentic.yaml

@@ -50,6 +50,7 @@ frontend:
 
 backend:
   type: vllm
+  dp_launch_mode: per_node
   connector: "null"
   kv_events_config:
     prefill: true

benchmarks/multi_node/srt-slurm-recipes/vllm/deepseek-v4/agentic/disagg-gb200-3p1d-dep8-dep16-agentic.yaml

@@ -50,6 +50,7 @@ frontend:
 
 backend:
   type: vllm
+  dp_launch_mode: per_node
   connector: "null"
   kv_events_config:
     prefill: true

runners/launch_gb200-nv.sh

@@ -308,6 +308,17 @@ if [[ "$IS_AGENTIC" == "1" ]]; then
         exit 1
     fi
 
+    # Backport NVIDIA/srt-slurm#90 without taking the post-v1.0.27
+    # mooncake_master changes. The feature launches one vLLM process per node
+    # and lets that process manage all node-local data-parallel ranks.
+    SRT_SLURM_PER_NODE_DP_SHA="1a0f9e3633318ab1ee9428d2129161b583786b18"
+    git fetch --depth 2 origin refs/pull/90/head || exit 1
+    if [[ "$(git rev-parse FETCH_HEAD)" != "$SRT_SLURM_PER_NODE_DP_SHA" ]]; then
+        echo "Error: NVIDIA/srt-slurm PR #90 commit did not resolve to $SRT_SLURM_PER_NODE_DP_SHA" >&2
+        exit 1
+    fi
+    git cherry-pick --no-commit "$SRT_SLURM_PER_NODE_DP_SHA" || exit 1
+
     # ai-dynamo/dynamo#11303.
     DYNAMO_SCHEMA="src/srtctl/core/schema.py"
     DYNAMO_UPSTREAM_HASH_CLONE='        f"git clone https://github.com/ai-dynamo/dynamo.git && "'