use monarch rc

Author: ebsmothers

.github/workflows/gpu_test.yaml

@@ -47,10 +47,8 @@ jobs:
         run: |
           python -m pip install -r .github/packaging/vllm_reqs.txt
           python -m pip install vllm==0.10.1.dev0+g6d8d0a24c.d20251009.cu129 --no-cache-dir --index-url https://download.pytorch.org/whl/preview/forge
-      - name: Download and install monarch and its dependencies
-        run: |
-          python -m pip install -r https://raw.githubusercontent.com/meta-pytorch/monarch/main/requirements.txt
-          python -m pip install torchmonarch --extra-index-url https://download.pytorch.org/whl/preview/forge
+      - name: Install Monarch
+        run: pip install torchmonarch==0.1.0rc1
       - name: Install torchtitan and torchstore
         run: |
           python -m pip install git+https://github.com/pytorch/torchtitan.git