Update Linux prerequisites installation guide for MTL iGPU (#12263)

* Update Linux prerequisites installation guide for MTL iGPU

* Further link update

* Small fixes

* Small fix

* Update based on comments

* Small fix

* Make oneAPI installation a shared section for both MTL iGPU and other GPU

* Small fix

* Small fix

* Clarify description

docs/mddocs/Overview/install_gpu.md

@@ -46,7 +46,7 @@ We recommend using [Miniforge](https://conda-forge.org/download/) to create a py
 
 The easiest ways to install `ipex-llm` is the following commands.
 
-- For **Intel Core™ Ultra Series 2 with Intel Arc™ Graphics (a.k.a. Lunar Lake)**:
+- For **Intel Core™ Ultra Processers (Series 2) with processor number 2xxV (code name Lunar Lake)**:
 
    Choose either US or CN website for `extra-index-url`:
 
@@ -94,7 +94,7 @@ The easiest ways to install `ipex-llm` is the following commands.
 
 If you encounter network issues when installing IPEX, you can also install IPEX-LLM dependencies for Intel XPU from source archives. First you need to download and install torch/torchvision/ipex from wheels listed below before installing `ipex-llm`.
 
-- For **Intel Core™ Ultra Series 2 with Intel Arc™ Graphics (a.k.a. Lunar Lake)**:
+- For **Intel Core™ Ultra Processers (Series 2) with processor number 2xxV (code name Lunar Lake)**:
 
    Download the wheels on Windows system:
 
@@ -187,8 +187,12 @@ IPEX-LLM GPU support on Linux has been verified on:
 * Intel Arc™ A-Series Graphics
 * Intel Data Center GPU Flex Series
 * Intel Data Center GPU Max Series
+* Intel iGPU
 
 > [!IMPORTANT]
+> For prerequisite installation on Intel Core™ Ultra Processers (Series 1) with processor number 1xxH/U/HL/UL (code name Meteor Lake), please refer to [this guide](../Quickstart/install_linux_gpu.md#install-prerequisites).
+
+> [!Note]
 > IPEX-LLM on Linux supports PyTorch 2.0 and PyTorch 2.1.
 > 
 > **Warning**
@@ -211,29 +215,6 @@ IPEX-LLM GPU support on Linux has been verified on:
       >
       > See [release page](https://dgpu-docs.intel.com/releases/index.html) for latest version.
 
-      > **Note**:
-      >
-      > For Intel Core™ Ultra integrated GPU, please make sure level_zero version >= 1.3.28717. The level_zero version can be checked with ``sycl-ls``, and verison will be tagged be ``[ext_oneapi_level_zero:gpu]``.         
-      > ```
-      > [opencl:acc:0] Intel(R) FPGA Emulation Platform for OpenCL(TM), Intel(R) FPGA Emulation Device OpenCL 1.2  [2023.16.12.0.12_195853.xmain-hotfix]
-      > [opencl:cpu:1] Intel(R) OpenCL, Intel(R) Core(TM) Ultra 5 125H OpenCL 3.0 (Build 0) [2023.16.12.0.12_195853.xmain-hotfix]
-      > [opencl:gpu:2] Intel(R) OpenCL Graphics, Intel(R) Arc(TM) Graphics OpenCL 3.0 NEO  [24.09.28717.12]
-      > [ext_oneapi_level_zero:gpu:0] Intel(R) Level-Zero, Intel(R) Arc(TM) Graphics 1.3 [1.3.28717]
-      > ```
-      >
-      > If you have level_zero version < 1.3.28717, you could update as follows:
-      >
-      > ```bash
-      > wget https://github.com/intel/intel-graphics-compiler/releases/download/igc-1.0.16238.4/intel-igc-core_1.0.16238.4_amd64.deb
-      > wget https://github.com/intel/intel-graphics-compiler/releases/download/igc-1.0.16238.4/intel-igc-opencl_1.0.16238.4_amd64.deb
-      > wget https://github.com/intel/compute-runtime/releases/download/24.09.28717.12/intel-level-zero-gpu-dbgsym_1.3.28717.12_amd64.ddeb
-      > wget https://github.com/intel/compute-runtime/releases/download/24.09.28717.12/intel-level-zero-gpu_1.3.28717.12_amd64.deb
-      > wget https://github.com/intel/compute-runtime/releases/download/24.09.28717.12/intel-opencl-icd-dbgsym_24.09.28717.12_amd64.ddeb
-      > wget https://github.com/intel/compute-runtime/releases/download/24.09.28717.12/intel-opencl-icd_24.09.28717.12_amd64.deb
-      > wget https://github.com/intel/compute-runtime/releases/download/24.09.28717.12/libigdgmm12_22.3.17_amd64.deb
-      > sudo dpkg -i *.deb
-      > ```
-
    - Step 2: Download and install [Intel® oneAPI Base Toolkit](https://www.intel.com/content/www/us/en/developer/tools/oneapi/base-toolkit-download.html) with version 2024.0. OneDNN, OneMKL and DPC++ compiler are needed, others are optional.
 
       Intel® oneAPI Base Toolkit 2024.0 installation methods:

docs/mddocs/Quickstart/install_linux_gpu.md

@@ -1,12 +1,17 @@
 # Install IPEX-LLM on Linux with Intel GPU
 
-This guide demonstrates how to install IPEX-LLM on Linux with Intel GPUs. It applies to Intel Data Center GPU Flex Series and Max Series, as well as Intel Arc Series GPU.
+This guide demonstrates how to install IPEX-LLM on Linux with Intel GPUs. It applies to Intel Data Center GPU Flex Series and Max Series, as well as Intel Arc Series GPU and Intel iGPU.
 
 IPEX-LLM currently supports the Ubuntu 20.04 operating system and later, and supports PyTorch 2.0 and PyTorch 2.1 on Linux. This page demonstrates IPEX-LLM with PyTorch 2.1. Check the [Installation](../Overview/install_gpu.md#linux) page for more details.
 
 
 ## Table of Contents
 - [Install Prerequisites](./install_linux_gpu.md#install-prerequisites)
+  - [Install GPU Driver](#install-gpu-driver)
+    - [For Intel Core™ Ultra Processers (Series 1) with processor number 1xxH/U/HL/UL (code name Meteor Lake)](#for-intel-core-ultra-processers-series-1-with-processor-number-1xxhuhlul-code-name-meteor-lake)
+    - [For other Intel iGPU and dGPU](#for-other-intel-igpu-and-dgpu)
+  - [Install oneAPI](#install-oneapi)
+  - [Setup Python Environment](#setup-python-environment)
 - [Install ipex-llm](./install_linux_gpu.md#install-ipex-llm)
 - [Verify Installation](./install_linux_gpu.md#verify-installation)
 - [Runtime Configurations](./install_linux_gpu.md#runtime-configurations)
@@ -17,7 +22,115 @@ IPEX-LLM currently supports the Ubuntu 20.04 operating system and later, and sup
 
 ### Install GPU Driver
 
-#### For Linux kernel 6.2
+#### For Intel Core™ Ultra Processers (Series 1) with processor number 1xxH/U/HL/UL (code name Meteor Lake)
+
+> [!NOTE]
+> For IPEX-LLM on Linux with Meteor Lake integrated GPU, we have currently verified on Ubuntu 22.04 with kernel `6.5.0-35-generic`.
+
+##### 1. Check current kernel version
+
+You could check your current kernel version through:
+
+```bash
+uname -r
+```
+If the version displayed is not `6.5.0-35-generic`, downgrade or upgrade the kernel to the recommended version.
+
+##### 2. (Optional) Downgrade / Upgrade to kernel 6.5.0-35
+
+If your current kernel version is not `6.5.0-35-generic`, you could downgrade or upgrade it by:
+
+```bash
+export VERSION="6.5.0-35"
+sudo apt-get install -y linux-headers-$VERSION-generic linux-image-$VERSION-generic linux-modules-extra-$VERSION-generic
+
+sudo sed -i "s/GRUB_DEFAULT=.*/GRUB_DEFAULT=\"1> $(echo $(($(awk -F\' '/menuentry / {print $2}' /boot/grub/grub.cfg \
+| grep -no $VERSION | sed 's/:/\n/g' | head -n 1)-2)))\"/" /etc/default/grub
+
+sudo update-grub
+```
+
+And the reboot your machine:
+
+```bash
+sudo reboot
+```
+
+After rebooting, you can use `uname -r` again to see that your kernel version has been changed to `6.5.0-35-generic`.
+
+##### 3. Enable GPU driver support through `force_probe` flag
+
+Next, you need to enable GPU driver support on kernel `6.5.0-35-generic` through `force_probe` parameter：
+
+```bash
+export FORCE_PROBE_VALUE=$(sudo dmesg  | grep i915 | grep -o 'i915\.force_probe=[a-zA-Z0-9]\{4\}')
+
+sed -i "/^GRUB_CMDLINE_LINUX_DEFAULT=/ s/\"\(.*\)\"/\"\1 $FORCE_PROBE_VALUE\"/" /etc/default/grub
+```
+
+> [!TIP]
+> In addition to using the above command, you could also maunally check your `force_probe` flag value through:
+>
+> ```bash
+> sudo dmesg  | grep i915
+> ```
+>
+> You may get output like `Your graphics device 7d55 is not properly supported by i915 in this kernel version. To force driver probe anyway, use i915.force_probe=7d55`, in which `7d55` is the PCI ID depends on your GPU model.
+>
+> Then, modify the `/etc/default/grub` file directly. Make sure you add `i915.force_probe=xxxx` to the value of `GRUB_CMDLINE_LINUX_DEFAULT`. For example, before modification, you have`GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"` inside `/etc/default/grub`. You then need to change it to `GRUB_CMDLINE_LINUX_DEFAULT="quiet splash i915.force_probe=7d55"`.
+
+Then update grub through:
+```bash
+sudo update-grub
+```
+
+Reboot the machine then to make the configuration take effect:
+
+```bash
+sudo reboot
+```
+
+##### 4. Install compute packages
+
+Compute packages are also required to be installed for Intel GPU on Ubuntu 22.04 through the following commands:
+
+```bash
+wget -qO - https://repositories.intel.com/gpu/intel-graphics.key | \
+  sudo gpg --yes --dearmor --output /usr/share/keyrings/intel-graphics.gpg
+
+echo "deb [arch=amd64,i386 signed-by=/usr/share/keyrings/intel-graphics.gpg] https://repositories.intel.com/gpu/ubuntu jammy client" | \
+  sudo tee /etc/apt/sources.list.d/intel-gpu-jammy.list
+
+sudo apt update
+
+apt-get install -y libze1 intel-level-zero-gpu intel-opencl-icd clinfo
+```
+
+
+##### 5. Configure permmision and verify GPU driver setup
+
+To complete the GPU driver setup, you need to make sure your user is in the render group:
+
+```bash
+sudo gpasswd -a ${USER} render
+newgrp render
+```
+
+You could then verify whether the GPU driver is functioning properly with:
+
+```bash
+clinfo | grep "Device Name"
+```
+
+whose output should contain `Intel(R) Arc(TM) Graphics`.
+
+> [!TIP]
+> You could refer to the [official driver guide for client GPUS](https://dgpu-docs.intel.com/driver/client/overview.html#installing-client-gpus-on-ubuntu-desktop-22-04-lts) for more information.
+
+
+#### For other Intel iGPU and dGPU
+
+##### For Linux kernel 6.2
 
 * Choose one option below depending on your CPU type:
 
@@ -80,7 +193,7 @@ IPEX-LLM currently supports the Ubuntu 20.04 operating system and later, and sup
     hwinfo --display
     ```
 
-#### For Linux kernel 6.5
+##### For Linux kernel 6.5
 
 * Choose one option below depending on your CPU type:
 
@@ -140,7 +253,7 @@ IPEX-LLM currently supports the Ubuntu 20.04 operating system and later, and sup
     hwinfo --display
     ```
 
-#### (Optional) Update Level Zero on Intel Core™ Ultra iGPU
+<!-- #### (Optional) Update Level Zero on Intel Core™ Ultra iGPU
 For Intel Core™ Ultra integrated GPU, please make sure level_zero version >= 1.3.28717. The level_zero version can be checked with `sycl-ls`, and verison will be tagged behind `[ext_oneapi_level_zero:gpu]`.
 
 Here are the sample output of `sycl-ls`:
@@ -161,17 +274,19 @@ wget https://github.com/intel/compute-runtime/releases/download/24.09.28717.12/i
 wget https://github.com/intel/compute-runtime/releases/download/24.09.28717.12/intel-opencl-icd_24.09.28717.12_amd64.deb
 wget https://github.com/intel/compute-runtime/releases/download/24.09.28717.12/libigdgmm12_22.3.17_amd64.deb
 sudo dpkg -i *.deb
-```
+``` -->
 
 ### Install oneAPI
-  ```bash
+IPEX-LLM requires installation of oneAPI 2024.0 for Intel GPU on Linux
-  wget -O- https://apt.repos.intel.com/intel-gpg-keys/GPG-PUB-KEY-INTEL-SW-PRODUCTS.PUB | gpg --dearmor | sudo tee /usr/share/keyrings/oneapi-archive-keyring.gpg > /dev/null
 
-  echo "deb [signed-by=/usr/share/keyrings/oneapi-archive-keyring.gpg] https://apt.repos.intel.com/oneapi all main" | sudo tee /etc/apt/sources.list.d/oneAPI.list
+```bash
+wget -O- https://apt.repos.intel.com/intel-gpg-keys/GPG-PUB-KEY-INTEL-SW-PRODUCTS.PUB | gpg --dearmor | sudo tee /usr/share/keyrings/oneapi-archive-keyring.gpg > /dev/null
 
-  sudo apt update
+echo "deb [signed-by=/usr/share/keyrings/oneapi-archive-keyring.gpg] https://apt.repos.intel.com/oneapi all main" | sudo tee /etc/apt/sources.list.d/oneAPI.list
 
-  sudo apt install intel-oneapi-common-vars=2024.0.0-49406 \
+sudo apt update
+
+sudo apt install intel-oneapi-common-vars=2024.0.0-49406 \
   intel-oneapi-common-oneapi-vars=2024.0.0-49406 \
   intel-oneapi-diagnostics-utility=2024.0.0-49093 \
   intel-oneapi-compiler-dpcpp-cpp=2024.0.2-49895 \
@@ -192,10 +307,17 @@ sudo dpkg -i *.deb
   intel-oneapi-dnnl-devel=2024.0.0-49521 \
   intel-oneapi-dnnl=2024.0.0-49521 \
   intel-oneapi-tcm-1.0=1.0.0-435
-  ```
+```
-  <img src="https://llm-assets.readthedocs.io/en/latest/_images/oneapi.png" alt="image-20240221102252565" width=100%; />
+<img src="https://llm-assets.readthedocs.io/en/latest/_images/oneapi.png" alt="image-20240221102252565" width=100%; />
 
-  <img src="https://llm-assets.readthedocs.io/en/latest/_images/basekit.png" alt="image-20240221102252565" width=100%; />
+<img src="https://llm-assets.readthedocs.io/en/latest/_images/basekit.png" alt="image-20240221102252565" width=100%; />
+
+>[!IMPORTANT]
+> Please make sure to reboot the machine after the installation of GPU driver and oneAPI is complete:
+>
+> ```bash
+> sudo reboot
+> ```
 
 ### Setup Python Environment
  
@@ -258,8 +380,7 @@ To use GPU acceleration on Linux, several environment variables are required or
   For Intel Arc™ A-Series Graphics and Intel Data Center GPU Flex Series, we recommend:
 
   ```bash
-  # Configure oneAPI environment variables. Required step for APT or offline installed oneAPI.
+  # Configure oneAPI environment variables.
-  # Skip this step for PIP-installed oneAPI since the environment has already been configured in LD_LIBRARY_PATH.
   source /opt/intel/oneapi/setvars.sh
 
   # Recommended Environment Variables for optimal performance
@@ -274,8 +395,7 @@ To use GPU acceleration on Linux, several environment variables are required or
   For Intel Data Center GPU Max Series, we recommend:
 
   ```bash
-  # Configure oneAPI environment variables. Required step for APT or offline installed oneAPI.
+  # Configure oneAPI environment variables.
-  # Skip this step for PIP-installed oneAPI since the environment has already been configured in LD_LIBRARY_PATH.
   source /opt/intel/oneapi/setvars.sh
 
   # Recommended Environment Variables for optimal performance
@@ -288,6 +408,16 @@ To use GPU acceleration on Linux, several environment variables are required or
 
   Please note that `libtcmalloc.so` can be installed by `conda install -c conda-forge -y gperftools=2.10`
 
+- For **Intel iGPU**:
+
+  ```bash
+  # Configure oneAPI environment variables. 
+  source /opt/intel/oneapi/setvars.sh
+
+  export SYCL_CACHE_PERSISTENT=1
+  export BIGDL_LLM_XMX_DISABLED=1
+  ```
+
 > [!NOTE]
 > Please refer to [this guide](../Overview/install_gpu.md#runtime-configuration-1) for more details regarding runtime configuration.
 

docs/mddocs/Quickstart/install_windows_gpu.md

@@ -47,7 +47,7 @@ conda activate llm
 
 With the `llm` environment active, use `pip` to install `ipex-llm` for GPU:
 
-- For **Intel Core™ Ultra Series 2 with Intel Arc™ Graphics (a.k.a. Lunar Lake)**:
+- For **Intel Core™ Ultra Processers (Series 2) with processor number 2xxV (code name Lunar Lake)**:
 
    Choose either US or CN website for `extra-index-url`: