fix excute tests env

Author: BrianPei

.github/workflows/unit_tests_common.yml

@@ -229,8 +229,20 @@ jobs:
       - name: Execute Tests
         if: steps.should_run.outputs.should_run == 'true'
         working-directory: ${{ github.workspace }}
+        env:
+          PLATFORM: ${{ inputs.platform }}
         run: |
           set -euo pipefail
+          
+          # Activate conda environment based on platform
+          if [[ "$PLATFORM" == "cuda" ]]; then
+            source /opt/miniconda3/etc/profile.d/conda.sh
+            conda activate flagscale-train
+          elif [[ "$PLATFORM" == "metax" ]] && [ -f /opt/conda/etc/profile.d/conda.sh ]; then
+            source /opt/conda/etc/profile.d/conda.sh
+            conda activate base
+          fi
+
           ${{ inputs.setup_commands }}
 
           # Load platform-specific environment variables
@@ -247,6 +259,8 @@ jobs:
           export PYTHONPATH=$GITHUB_WORKSPACE:${PYTHONPATH:-}
           export PATH=${CUDA_HOME:-/usr/local/cuda}/bin:$PATH
           export LD_LIBRARY_PATH=${CUDA_HOME:-/usr/local/cuda}/lib:${LD_LIBRARY_PATH:-}
+          # Ensure log directory exists regardless of volume mount state
+          mkdir -p /logs
 
           if [[ "${{ matrix.test_group.name }}" == *"lint"* ]]; then
             export CPP_ONLY=0