diff --git a/.github/configs/srt-slurm-validation.yaml b/.github/configs/srt-slurm-validation.yaml
new file mode 100644
index 000000000..6396b9758
--- /dev/null
+++ b/.github/configs/srt-slurm-validation.yaml
@@ -0,0 +1,34 @@
+# Minimal config for validating NVIDIA/srt-slurm#41 end-to-end on GB200.
+# Referenced explicitly via --config-files on a one-off workflow_dispatch;
+# NOT picked up by normal sweeps (they run against nvidia-master.yaml).
+# Uses dsr1-fp4-dynamo-trt, which the launcher maps to
+# /mnt/lustre01/models/deepseek-r1-0528-fp4-v2/ (present on both the GH
+# runner and compute nodes, so preflight passes). Smallest 8k1k trtllm
+# recipe at 1P+8D (no zip_override, nginx-sqsh alias matches launcher).
+dsr1-fp4-gb200-dynamo-trt:
+  image: nvcr.io#nvidia/ai-dynamo/tensorrtllm-runtime:0.8.1.post2
+  model: nvidia/DeepSeek-R1-0528-NVFP4-v2
+  model-prefix: dsr1
+  runner: gb200
+  precision: fp4
+  framework: dynamo-trt
+  multinode: true
+  disagg: true
+  seq-len-configs:
+  - isl: 8192
+    osl: 1024
+    search-space:
+    - conc-list: [24]
+      prefill:
+        num-worker: 1
+        tp: 4
+        ep: 4
+        dp-attn: true
+        additional-settings:
+        # https://github.com/NVIDIA/srt-slurm/blob/main/recipes/trtllm/gb200-fp4/8k1k/stp/ctx1_gen4_tep8_batch1_eplb0_mtp0.yaml
+        - "CONFIG_FILE=recipes/trtllm/gb200-fp4/8k1k/stp/ctx1_gen4_tep8_batch1_eplb0_mtp0.yaml"
+      decode:
+        num-worker: 4
+        tp: 8
+        ep: 8
+        dp-attn: false
diff --git a/.github/workflows/benchmark-multinode-tmpl.yml b/.github/workflows/benchmark-multinode-tmpl.yml
index 13ee99618..353fe98a4 100644
--- a/.github/workflows/benchmark-multinode-tmpl.yml
+++ b/.github/workflows/benchmark-multinode-tmpl.yml
@@ -95,6 +95,16 @@ on:
         description: "Git ref (branch/sha) to checkout"
         required: false
         type: string
+      srt-slurm-repo:
+        description: "Override srt-slurm clone URL (leave empty to use launcher default)"
+        required: false
+        type: string
+        default: ""
+      srt-slurm-ref:
+        description: "Override srt-slurm git ref (branch/sha; leave empty to use launcher default)"
+        required: false
+        type: string
+        default: ""
 
 env:
   RANDOM_RANGE_RATIO: 0.8
@@ -126,6 +136,11 @@ env:
   DECODE_EP: ${{ inputs.decode-ep }}
   DECODE_DP_ATTN: ${{ inputs.decode-dp-attn }}
 
+  # Optional override for which srt-slurm repo/ref the launcher clones.
+  # Leave empty to use the launcher's built-in defaults per framework.
+  SRT_SLURM_REPO: ${{ inputs.srt-slurm-repo }}
+  SRT_SLURM_REF: ${{ inputs.srt-slurm-ref }}
+
 permissions:
   contents: read
 
diff --git a/.github/workflows/e2e-tests.yml b/.github/workflows/e2e-tests.yml
index 19a60b9ea..78ad78724 100644
--- a/.github/workflows/e2e-tests.yml
+++ b/.github/workflows/e2e-tests.yml
@@ -16,6 +16,16 @@ on:
                 description: "Ref (branch/sha) to checkout for generating configs"
                 required: false
                 type: string
+            srt-slurm-repo:
+                description: "Override srt-slurm clone URL (leave empty to use launcher default)"
+                required: false
+                type: string
+                default: ""
+            srt-slurm-ref:
+                description: "Override srt-slurm git ref (branch/sha; leave empty to use launcher default)"
+                required: false
+                type: string
+                default: ""
     workflow_call:
         inputs:
             generate-cli-command:
@@ -30,6 +40,16 @@ on:
                 description: "Ref (branch/sha) to checkout for generating configs"
                 required: false
                 type: string
+            srt-slurm-repo:
+                description: "Override srt-slurm clone URL (leave empty to use launcher default)"
+                required: false
+                type: string
+                default: ""
+            srt-slurm-ref:
+                description: "Override srt-slurm git ref (branch/sha; leave empty to use launcher default)"
+                required: false
+                type: string
+                default: ""
 
 jobs:
     get-jobs:
@@ -102,6 +122,8 @@ jobs:
             decode-additional-settings: ${{ toJson(matrix.config.decode.additional-settings) }}
             run-eval: false
             ref: ${{ inputs.ref }}
+            srt-slurm-repo: ${{ inputs.srt-slurm-repo }}
+            srt-slurm-ref: ${{ inputs.srt-slurm-ref }}
 
     test-sweep-multi-node-evals:
         needs: get-jobs
@@ -143,6 +165,8 @@ jobs:
             eval-only: true
             eval-conc: ${{ matrix.config.eval-conc }}
             ref: ${{ inputs.ref }}
+            srt-slurm-repo: ${{ inputs.srt-slurm-repo }}
+            srt-slurm-ref: ${{ inputs.srt-slurm-ref }}
 
     test-sweep-single-node:
         needs: get-jobs
diff --git a/runners/launch_gb200-nv.sh b/runners/launch_gb200-nv.sh
index b746e4a24..b37b78d64 100755
--- a/runners/launch_gb200-nv.sh
+++ b/runners/launch_gb200-nv.sh
@@ -134,20 +134,27 @@ if [ -d "$SRT_REPO_DIR" ]; then
     rm -rf "$SRT_REPO_DIR"
 fi
 
+# Allow SRT_SLURM_REPO / SRT_SLURM_REF to override the default clone source
+# (useful for testing WIP branches like the generalized lm-eval-main).
 if [[ $FRAMEWORK == "dynamo-vllm" ]]; then
-    git clone https://github.com/NVIDIA/srt-slurm.git "$SRT_REPO_DIR"
-    cd "$SRT_REPO_DIR"
-    git checkout sa-submission-q2-2026
+    DEFAULT_SRT_REPO="https://github.com/NVIDIA/srt-slurm.git"
+    DEFAULT_SRT_REF="sa-submission-q2-2026"
 elif [[ $FRAMEWORK == "dynamo-trt" && $MODEL_PREFIX == "kimik2.5" ]]; then
-    git clone https://github.com/NVIDIA/srt-slurm.git "$SRT_REPO_DIR"
-    cd "$SRT_REPO_DIR"
-    git checkout sa-submission-q2-2026
+    DEFAULT_SRT_REPO="https://github.com/NVIDIA/srt-slurm.git"
+    DEFAULT_SRT_REF="sa-submission-q2-2026"
 else
-    git clone https://github.com/ishandhanani/srt-slurm.git "$SRT_REPO_DIR"
-    cd "$SRT_REPO_DIR"
-    git checkout sa-submission-q1-2026
+    DEFAULT_SRT_REPO="https://github.com/ishandhanani/srt-slurm.git"
+    DEFAULT_SRT_REF="sa-submission-q1-2026"
 fi
 
+SRT_SLURM_REPO="${SRT_SLURM_REPO:-$DEFAULT_SRT_REPO}"
+SRT_SLURM_REF="${SRT_SLURM_REF:-$DEFAULT_SRT_REF}"
+
+echo "Cloning ${SRT_SLURM_REPO} @ ${SRT_SLURM_REF}"
+git clone "$SRT_SLURM_REPO" "$SRT_REPO_DIR"
+cd "$SRT_REPO_DIR"
+git checkout "$SRT_SLURM_REF"
+
 echo "Installing srtctl..."
 curl -LsSf https://astral.sh/uv/install.sh | sh
 source $HOME/.local/bin/env
@@ -197,7 +204,10 @@ cat srtslurm.yaml
 echo "Running make setup..."
 make setup ARCH=aarch64
 
-# Export eval-related env vars for srt-slurm post-benchmark eval
+# Export eval-related env vars for srt-slurm post-benchmark eval.
+# LM_EVAL_WORKSPACE is what the generalized srt-slurm reads; INFMAX_WORKSPACE
+# is kept for compatibility with older srt-slurm branches (sa-submission-*).
+export LM_EVAL_WORKSPACE="$GITHUB_WORKSPACE"
 export INFMAX_WORKSPACE="$GITHUB_WORKSPACE"
 
 echo "Submitting job with srtctl..."