[Tool] Add NIXL installation script (#18172)

Signed-off-by: Linkun <github@lkchen.net>

tools/install_nixl.sh

+#!/bin/bash
+# Usage: ./install_nixl.sh [--force]
+
+FORCE=false
+if [ "$1" == "--force" ]; then
+    FORCE=true
+fi
+
+SUDO=false
+if command -v sudo >/dev/null 2>&1 && sudo -n true 2>/dev/null; then
+    SUDO=true
+fi
+
+ARCH=$(uname -m)
+
+ROOT_DIR="/usr/local"
+mkdir -p "$ROOT_DIR"
+GDR_HOME="$ROOT_DIR/gdrcopy"
+UCX_HOME="$ROOT_DIR/ucx"
+NIXL_HOME="$ROOT_DIR/nixl"
+CUDA_HOME=/usr/local/cuda
+
+export PATH="$GDR_HOME/bin:$UCX_HOME/bin:$NIXL_HOME/bin:$PATH"
+export LD_LIBRARY_PATH="$GDR_HOME/lib:$UCX_HOME/lib:$NIXL_HOME/lib/$ARCH-linux-gnu:$LD_LIBRARY_PATH"
+
+TEMP_DIR="nixl_installer"
+mkdir -p "$TEMP_DIR"
+cd "$TEMP_DIR"
+
+pip install meson ninja pybind11
+
+if [ ! -e "/dev/gdrdrv" ] || [ "$FORCE" = true ]; then
+    echo "Installing gdrcopy\n"
+    wget https://github.com/NVIDIA/gdrcopy/archive/refs/tags/v2.5.tar.gz
+    tar xzf v2.5.tar.gz; rm v2.5.tar.gz
+    cd gdrcopy-2.5
+    make prefix=$GDR_HOME CUDA=$CUDA_HOME all install
+    
+    if $SUDO; then
+        echo "Running insmod.sh with sudo"
+        sudo ./insmod.sh
+    else
+        echo "Skipping insmod.sh - sudo not available"
+        echo "Please run 'sudo ./gdrcopy-2.5/insmod.sh' manually if needed"
+    fi
+    
+    cd ..
+else
+    echo "Found /dev/gdrdrv. Skipping gdrcopy installation"
+fi
+
+if ! command -v ucx_info &> /dev/null || [ "$FORCE" = true ]; then
+    echo "Installing UCX"
+    wget https://github.com/openucx/ucx/releases/download/v1.18.0/ucx-1.18.0.tar.gz
+    tar xzf ucx-1.18.0.tar.gz; rm ucx-1.18.0.tar.gz
+    cd ucx-1.18.0
+    
+    # Checking Mellanox NICs
+    MLX_OPTS=""
+    if lspci | grep -i mellanox > /dev/null || command -v ibstat > /dev/null; then
+        echo "Mellanox NIC detected, adding Mellanox-specific options"
+        MLX_OPTS="--with-rdmacm \
+                  --with-mlx5-dv \
+                  --with-ib-hw-tm"
+    fi
+    
+    ./configure  --prefix=$UCX_HOME                \
+                --enable-shared                    \
+                --disable-static                   \
+                --disable-doxygen-doc              \
+                --enable-optimizations             \
+                --enable-cma                       \
+                --enable-devel-headers             \
+                --with-cuda=$CUDA_HOME             \
+                --with-dm                          \
+                --with-gdrcopy=$GDR_HOME           \
+                --with-verbs                       \
+                --enable-mt                        \
+                $MLX_OPTS
+    make -j
+    make -j install-strip
+    
+    if $SUDO; then
+        echo "Running ldconfig with sudo"
+        sudo ldconfig
+    else
+        echo "Skipping ldconfig - sudo not available"
+        echo "Please run 'sudo ldconfig' manually if needed"
+    fi
+
+    cd ..
+else
+    echo "Found existing UCX. Skipping UCX installation"  
+fi
+
+if ! command -v nixl_test &> /dev/null || [ "$FORCE" = true ]; then
+    echo "Installing NIXL"
+    wget https://github.com/ai-dynamo/nixl/archive/refs/tags/0.2.0.tar.gz
+    tar xzf 0.2.0.tar.gz; rm 0.2.0.tar.gz
+    cd nixl-0.2.0
+    meson setup build --prefix=$NIXL_HOME -Ducx_path=$UCX_HOME
+    cd build
+    ninja
+    ninja install
+
+    cd ../..
+else
+    echo "Found existing NIXL. Skipping NIXL installation"  
+fi