[misc] add instructions on how to install nvshmem/pplx/deepep (#17964)

Signed-off-by: youkaichao <youkaichao@gmail.com>

tools/ep_kernels/install_system_drivers.sh

@@ -0,0 +1,24 @@
+set -ex
+
+# prepare workspace directory
+WORKSPACE=$1
+if [ -z "$WORKSPACE" ]; then
+    export WORKSPACE=$(pwd)/ep_kernels_workspace
+fi
+
+if [ ! -d "$WORKSPACE" ]; then
+    mkdir -p $WORKSPACE
+fi
+
+# build and install gdrcopy driver
+pushd $WORKSPACE
+cd gdrcopy_src
+./insmod.sh
+# run gdrcopy_copybw to test the installation
+$WORKSPACE/gdrcopy_install/bin/gdrcopy_copybw
+
+# turn on IBGDA
+echo 'options nvidia NVreg_EnableStreamMemOPs=1 NVreg_RegistryDwords="PeerMappingOverride=1;"' | tee -a /etc/modprobe.d/nvidia.conf
+update-initramfs -u
+
+echo "Please reboot the system to apply the changes"