define CMAKE_BUILD_PARALLEL_LEVEL

Author: Wovchena

.github/workflows/genai_python_lib.yml

@@ -18,7 +18,7 @@ jobs:
       - run: python -m pip install --pre openvino --extra-index-url https://storage.openvinotoolkit.org/simple/wheels/nightly  # Can't load CentOS libraries from the archive
       - run: source ./ov/setupvars.sh && python -m pip install ./thirdparty/openvino_tokenizers/[transformers]
       - run: PYTHONPATH=./src/python/ python -c "from openvino_genai import LLMPipeline"
-      - run: source ./ov/setupvars.sh && python -m pip install --pre . --extra-index-url https://storage.openvinotoolkit.org/simple/wheels/nightly
+      - run: source ./ov/setupvars.sh && CMAKE_BUILD_PARALLEL_LEVEL= python -m pip install --pre . --extra-index-url https://storage.openvinotoolkit.org/simple/wheels/nightly
       - run: python -c "from openvino_genai import LLMPipeline"
       - name: GenAI Python API tests
         run: |
@@ -50,5 +50,5 @@ jobs:
       - run: python -m pip install "numpy<1.27"
       - run: call w_openvino_toolkit_windows_2024.2.0.dev20240515_x86_64\setupvars.bat && python -m pip install ./thirdparty/openvino_tokenizers/[transformers]
       - run: set "PYTHONPATH=./src/python;" && call w_openvino_toolkit_windows_2024.2.0.dev20240515_x86_64\setupvars.bat && python -c "from openvino_genai import LLMPipeline"  # cmd evaluates variables in a different way. Setting PYTHONPATH before setupvars.bat instead of doing that after solves that.
-      - run: call w_openvino_toolkit_windows_2024.2.0.dev20240515_x86_64\setupvars.bat && python -m pip install .      
+      - run: set CMAKE_BUILD_PARALLEL_LEVEL= && call w_openvino_toolkit_windows_2024.2.0.dev20240515_x86_64\setupvars.bat python -m pip install .
       - run: python -c "from openvino_genai import LLMPipeline"