From 057b07fc50011f4106e191cfda157169e971bf2b Mon Sep 17 00:00:00 2001
From: Alison Shao <54658187+alisonshao@users.noreply.github.com>
Date: Mon, 19 Jan 2026 14:35:58 -0800
Subject: [PATCH] Disable unit-test-backend-4-gpu-gb200 job (#17367)

---
 .github/workflows/pr-test.yml | 103 +++++++++++++++++-----------------
 1 file changed, 52 insertions(+), 51 deletions(-)

diff --git a/.github/workflows/pr-test.yml b/.github/workflows/pr-test.yml
index 7595fe2be..bb17773f8 100644
--- a/.github/workflows/pr-test.yml
+++ b/.github/workflows/pr-test.yml
@@ -1541,56 +1541,57 @@ jobs:
           fi
           IS_BLACKWELL=1 python3 run_suite.py --suite per-commit-4-gpu-b200 --auto-partition-id ${{ matrix.part }} --auto-partition-size 3 --timeout-per-file 1800 $RETRY_FLAG $CONTINUE_ON_ERROR_FLAG
 
-  unit-test-backend-4-gpu-gb200:
-    needs: [check-changes, call-gate, stage-b-test-small-1-gpu, stage-b-test-large-1-gpu, stage-b-test-large-2-gpu, stage-b-test-4-gpu-b200, sgl-kernel-build-wheels-arm]
-    if: |
-      always() &&
-      (
-        (inputs.target_stage == 'unit-test-backend-4-gpu-gb200') ||
-        (
-          !inputs.target_stage &&
-          (github.event_name == 'schedule' || (!failure() && !cancelled())) &&
-          ((needs.check-changes.outputs.main_package == 'true') || (needs.check-changes.outputs.sgl_kernel == 'true'))
-        )
-      )
-    runs-on: 4-gpu-gb200
-    timeout-minutes: 60
-    env:
-      RUNNER_LABELS: 4-gpu-gb200
-    strategy:
-      fail-fast: false
-    steps:
-      - name: Checkout code
-        uses: actions/checkout@v4
-        with:
-          ref: ${{ inputs.pr_head_sha || inputs.ref || github.sha }}
-
-      - name: Download artifacts
-        if: needs.check-changes.outputs.sgl_kernel == 'true'
-        uses: actions/download-artifact@v4
-        with:
-          path: sgl-kernel/dist/
-          merge-multiple: true
-          pattern: wheel-python3.10-cuda12.9-aarch64
-
-      - name: Install dependencies
-        timeout-minutes: 10
-        run: |
-          CUSTOM_BUILD_SGL_KERNEL=${{needs.check-changes.outputs.sgl_kernel}} IS_BLACKWELL=1 GRACE_BLACKWELL=1 bash scripts/ci/ci_install_deepep.sh
-
-      - name: Run test
-        timeout-minutes: 45
-        run: |
-          cd test/srt
-          RETRY_FLAG=""
-          if [[ "${{ needs.check-changes.outputs.enable_retry }}" == "true" ]]; then
-            RETRY_FLAG="--enable-retry"
-          fi
-          CONTINUE_ON_ERROR_FLAG=""
-          if [[ "${{ needs.check-changes.outputs.continue_on_error }}" == "true" ]]; then
-            CONTINUE_ON_ERROR_FLAG="--continue-on-error"
-          fi
-          python3 run_suite.py --suite per-commit-4-gpu-gb200 --auto-partition-id 0 --auto-partition-size 1 --timeout-per-file 3600 $RETRY_FLAG $CONTINUE_ON_ERROR_FLAG
+  # Disabled: GB200 runner needs repair
+  # unit-test-backend-4-gpu-gb200:
+  #   needs: [check-changes, call-gate, stage-b-test-small-1-gpu, stage-b-test-large-1-gpu, stage-b-test-large-2-gpu, stage-b-test-4-gpu-b200, sgl-kernel-build-wheels-arm]
+  #   if: |
+  #     always() &&
+  #     (
+  #       (inputs.target_stage == 'unit-test-backend-4-gpu-gb200') ||
+  #       (
+  #         !inputs.target_stage &&
+  #         (github.event_name == 'schedule' || (!failure() && !cancelled())) &&
+  #         ((needs.check-changes.outputs.main_package == 'true') || (needs.check-changes.outputs.sgl_kernel == 'true'))
+  #       )
+  #     )
+  #   runs-on: 4-gpu-gb200
+  #   timeout-minutes: 60
+  #   env:
+  #     RUNNER_LABELS: 4-gpu-gb200
+  #   strategy:
+  #     fail-fast: false
+  #   steps:
+  #     - name: Checkout code
+  #       uses: actions/checkout@v4
+  #       with:
+  #         ref: ${{ inputs.pr_head_sha || inputs.ref || github.sha }}
+  #
+  #     - name: Download artifacts
+  #       if: needs.check-changes.outputs.sgl_kernel == 'true'
+  #       uses: actions/download-artifact@v4
+  #       with:
+  #         path: sgl-kernel/dist/
+  #         merge-multiple: true
+  #         pattern: wheel-python3.10-cuda12.9-aarch64
+  #
+  #     - name: Install dependencies
+  #       timeout-minutes: 10
+  #       run: |
+  #         CUSTOM_BUILD_SGL_KERNEL=${{needs.check-changes.outputs.sgl_kernel}} IS_BLACKWELL=1 GRACE_BLACKWELL=1 bash scripts/ci/ci_install_deepep.sh
+  #
+  #     - name: Run test
+  #       timeout-minutes: 45
+  #       run: |
+  #         cd test/srt
+  #         RETRY_FLAG=""
+  #         if [[ "${{ needs.check-changes.outputs.enable_retry }}" == "true" ]]; then
+  #           RETRY_FLAG="--enable-retry"
+  #         fi
+  #         CONTINUE_ON_ERROR_FLAG=""
+  #         if [[ "${{ needs.check-changes.outputs.continue_on_error }}" == "true" ]]; then
+  #           CONTINUE_ON_ERROR_FLAG="--continue-on-error"
+  #         fi
+  #         python3 run_suite.py --suite per-commit-4-gpu-gb200 --auto-partition-id 0 --auto-partition-size 1 --timeout-per-file 3600 $RETRY_FLAG $CONTINUE_ON_ERROR_FLAG
 
   pr-test-finish:
     needs:
@@ -1627,7 +1628,7 @@ jobs:
         unit-test-deepep-4-gpu,
         # unit-test-deepep-8-gpu,  # Disabled, see #17175
         unit-test-backend-4-gpu-b200,
-        unit-test-backend-4-gpu-gb200,
+        # unit-test-backend-4-gpu-gb200,  # Disabled: GB200 runner needs repair
       ]
     if: always()
     runs-on: ubuntu-latest