[CI] Shard Multi-Modal Models (Standard) into 4 parallel jobs (#37014)

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

.buildkite/test_areas/models_multimodal.yaml

@@ -2,15 +2,59 @@ group: Models - Multimodal
 depends_on: 
   - image-build
 steps:
-- label: Multi-Modal Models (Standard) # 60min
-  timeout_in_minutes: 80
+- label: "Multi-Modal Models (Standard) 1: qwen2"
+  timeout_in_minutes: 45
   source_file_dependencies:
   - vllm/
   - tests/models/multimodal
   commands:
     - pip install git+https://github.com/TIGER-AI-Lab/Mantis.git
-    - pip freeze | grep -E 'torch'
-    - pytest -v -s models/multimodal -m core_model --ignore models/multimodal/generation/test_whisper.py --ignore models/multimodal/processing
+    - pytest -v -s models/multimodal/generation/test_common.py -m core_model -k "qwen2"
+    - pytest -v -s models/multimodal/generation/test_ultravox.py -m core_model
+  mirror:
+    amd:
+      device: mi325_1
+      depends_on:
+      - image-build-amd
+
+- label: "Multi-Modal Models (Standard) 2: qwen3 + gemma"
+  timeout_in_minutes: 45
+  source_file_dependencies:
+  - vllm/
+  - tests/models/multimodal
+  commands:
+    - pip install git+https://github.com/TIGER-AI-Lab/Mantis.git
+    - pytest -v -s models/multimodal/generation/test_common.py -m core_model -k "qwen3 or gemma"
+    - pytest -v -s models/multimodal/generation/test_qwen2_5_vl.py -m core_model
+  mirror:
+    amd:
+      device: mi325_1
+      depends_on:
+      - image-build-amd
+
+- label: "Multi-Modal Models (Standard) 3: llava + qwen2_vl"
+  timeout_in_minutes: 45
+  source_file_dependencies:
+  - vllm/
+  - tests/models/multimodal
+  commands:
+    - pip install git+https://github.com/TIGER-AI-Lab/Mantis.git
+    - pytest -v -s models/multimodal/generation/test_common.py -m core_model -k "not qwen2 and not qwen3 and not gemma"
+    - pytest -v -s models/multimodal/generation/test_qwen2_vl.py -m core_model
+  mirror:
+    amd:
+      device: mi325_1
+      depends_on:
+      - image-build-amd
+
+- label: "Multi-Modal Models (Standard) 4: other + whisper"
+  timeout_in_minutes: 45
+  source_file_dependencies:
+  - vllm/
+  - tests/models/multimodal
+  commands:
+    - pip install git+https://github.com/TIGER-AI-Lab/Mantis.git
+    - pytest -v -s models/multimodal -m core_model --ignore models/multimodal/generation/test_common.py --ignore models/multimodal/generation/test_ultravox.py --ignore models/multimodal/generation/test_qwen2_5_vl.py --ignore models/multimodal/generation/test_qwen2_vl.py --ignore models/multimodal/generation/test_whisper.py --ignore models/multimodal/processing
     - cd .. && VLLM_WORKER_MULTIPROC_METHOD=spawn pytest -v -s tests/models/multimodal/generation/test_whisper.py -m core_model  # Otherwise, mp_method="spawn" doesn't work
   mirror:
     amd: