diff --git a/README.md b/README.md
index 2461225..bc03245 100644
--- a/README.md
+++ b/README.md
@@ -2,6 +2,15 @@
 
 After installing `ipex-llm` which is required to use Intel GPUs (see documentation in [Links](#Links), you can should have access to `conda` and be able to `import torch` normally.
 
+Important: Set the necessary environmental variables:
+
+```bash
+unset OCL_ICD_VENDORS
+export SYCL_CACHE_PERSISTENT=1
+# [optional] The following environment variable may improve performance, but in some cases, it may also lead to performance degradation
+export SYCL_PI_LEVEL_ZERO_USE_IMMEDIATE_COMMANDLISTS=1
+```
+
 Links
 - [Install IPEX-LLM on Intel GPU with PyTorch 2.6](https://git.ayo.run/ayo/ipex-llm/src/branch/main/docs/mddocs/Quickstart/install_pytorch26_gpu.md)
 - [Get started with PyTorch locally](https://pytorch.org/get-started/locally/)