Upload root_scripts/install_flash_attn.sh with huggingface_hub

root_scripts/install_flash_attn.sh

@@ -0,0 +1,17 @@
+#!/bin/bash
+set -x
+
+echo "=== Trying flash-attn install ==="
+
+# Method 1: Try FA3 from the official wheel index
+echo "--- Method 1: FA3 wheel index ---"
+pip install flash-attn \
+    --extra-index-url https://dao-ailab.github.io/flash-attention/wheels/ \
+    --no-build-isolation \
+    2>&1 | tail -20
+
+# Check if it worked
+python3 -c "import flash_attn; print(f'flash_attn version: {flash_attn.__version__}')" 2>&1
+
+echo "INSTALL_SCRIPT_DONE"
+