diff --git a/.github/workflows/build-sphinx.yml b/.github/workflows/build-sphinx.yml
index 0c0f220d59a6..16de6e2d480e 100644
--- a/.github/workflows/build-sphinx.yml
+++ b/.github/workflows/build-sphinx.yml
@@ -3,16 +3,27 @@ on:
   push:
     branches:
       - master
+  pull_request:
 
 jobs:
   build-and-deploy:
     name: Build and Deploy Docs
+
     runs-on: ubuntu-20.04
+
+    defaults:
+      run:
+        shell: bash -l {0}
+
+    env:
+      python-ver: '3.9'
+
     steps:
       - name: Cancel Previous Runs
-        uses: styfle/cancel-workflow-action@0.6.0
+        uses: styfle/cancel-workflow-action@0.10.0
         with:
           access_token: ${{ github.token }}
+
       - name: Install Intel repository
         run: |
           wget https://apt.repos.intel.com/intel-gpg-keys/GPG-PUB-KEY-INTEL-SW-PRODUCTS-2023.PUB
@@ -20,17 +31,20 @@ jobs:
           rm GPG-PUB-KEY-INTEL-SW-PRODUCTS-2023.PUB
           sudo add-apt-repository "deb https://apt.repos.intel.com/oneapi all main"
           sudo apt-get update
+
       - name: Update libstdc++-dev
         run: |
           sudo apt remove -y gcc-7 g++-7 gcc-8 g++-8 gcc-10 g++-10
           sudo apt remove -y libstdc++-10-dev
           sudo apt autoremove
           sudo apt install --reinstall -y gcc-9 g++-9 libstdc++-9-dev
+
       - name: Install Intel OneAPI
         run: |
           sudo apt-get install intel-oneapi-mkl                \
                                intel-oneapi-mkl-devel          \
                                intel-oneapi-dpcpp-cpp-compiler
+
       # https://github.com/marketplace/actions/checkout
       - name: Install nvidia-cuda support drivers
         run: |
@@ -38,54 +52,60 @@ jobs:
           sudo apt-get update
           sudo apt-get install -y libnvidia-gl-450
           sudo apt-get install -y nvidia-cuda-toolkit clinfo
+
       - name: Checkout repo
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
+
       # https://github.com/marketplace/actions/setup-miniconda
       - name: Setup miniconda
         uses: conda-incubator/setup-miniconda@v2
         with:
-          activate-environment: dpnp
-          python-version: 3.8
-          channels: intel,conda-forge
-          auto-activate-base: false
-      - name: Conda info
-        shell: bash -l {0}
-        run: |
-          conda info
-          conda list
+          auto-update-conda: true
+          python-version: ${{ env.python-ver }}
+          miniconda-version: 'latest'
+          activate-environment: 'docs'
+          channels: intel, conda-forge
+
       - name: Install sphinx dependencies
-        shell: bash -l {0}
-        run: |
-          conda install sphinx sphinx_rtd_theme
+        run: conda install sphinx sphinx_rtd_theme
+
       - name: Install dpnp dependencies
-        shell: bash -l {0}
         run: |
-          conda install dpctl mkl-devel-dpcpp tbb-devel dpcpp_linux-64 cmake=3.19 cython pytest \
+          conda install dpctl mkl-devel-dpcpp tbb-devel dpcpp_linux-64 cmake cython pytest \
                         -c dppy/label/dev -c intel -c conda-forge
+
       - name: Install cuPy dependencies
-        shell: bash -l {0}
+        run: conda install -c conda-forge cupy cudatoolkit=10.0
+
+      - name: Conda info
         run: |
-          conda install -c conda-forge cupy cudatoolkit=10.0
+          conda info
+          conda list
+
       - name: Build library
-        shell: bash -l {0}
         run: |
           DPLROOT=/opt/intel/oneapi/dpl/latest python setup.py build_clib
           CC=dpcpp python setup.py build_ext --inplace
           python setup.py develop
+
       - name: Build docs
-        shell: bash -l {0}
-        run: |
-          make html
+        run: make html
         working-directory: doc
+
       # https://github.com/marketplace/actions/doxygen-action
       - name: Build backend docs
-        uses: mattnotmitt/doxygen-action@v1
+        uses: mattnotmitt/doxygen-action@v1.9.4
         with:
             working-directory: 'dpnp/backend/doc'
+
       - name: Copy backend docs
         run: cp -r dpnp/backend/doc/html doc/_build/html/backend_doc
+
       # https://github.com/marketplace/actions/github-pages-action
       - name: Deploy docs
+        if: |
+          !github.event.pull_request.head.repo.fork  &&
+          (github.ref == 'refs/heads/master' || (startsWith(github.ref, 'refs/heads/release') == true) || github.event_name == 'push' && contains(github.ref, 'refs/tags/'))
         uses: peaceiris/actions-gh-pages@v3
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/conda-package.yml b/.github/workflows/conda-package.yml
index 798359357183..fb307a54031b 100644
--- a/.github/workflows/conda-package.yml
+++ b/.github/workflows/conda-package.yml
@@ -30,6 +30,11 @@ jobs:
       conda-pkgs: '/home/runner/conda_pkgs_dir/'
 
     steps:
+      - name: Cancel Previous Runs
+        uses: styfle/cancel-workflow-action@0.10.0
+        with:
+          access_token: ${{ github.token }}
+
       - name: Checkout DPNP repo
         uses: actions/checkout@v3
         with:
@@ -95,6 +100,11 @@ jobs:
       conda-pkgs: 'C:\Users\runneradmin\conda_pkgs_dir\'
 
     steps:
+      - name: Cancel Previous Runs
+        uses: styfle/cancel-workflow-action@0.10.0
+        with:
+          access_token: ${{ github.token }}
+
       - name: Checkout DPNP repo
         uses: actions/checkout@v3
         with:
@@ -422,7 +432,9 @@ jobs:
   upload_linux:
     needs: test_linux
 
-    if: ${{github.ref == 'refs/heads/master' || (startsWith(github.ref, 'refs/heads/release') == true) || github.event_name == 'push' && contains(github.ref, 'refs/tags/')}}
+    if: |
+      !github.event.pull_request.head.repo.fork  &&
+      (github.ref == 'refs/heads/master' || (startsWith(github.ref, 'refs/heads/release') == true) || github.event_name == 'push' && contains(github.ref, 'refs/tags/'))
 
     runs-on: ubuntu-latest
 
@@ -452,14 +464,16 @@ jobs:
         run: conda install anaconda-client
 
       - name: Upload
+        run: anaconda --token ${{ env.ANACONDA_TOKEN }} upload --user dppy --label dev ${{ env.PACKAGE_NAME }}-*.tar.bz2
         env:
           ANACONDA_TOKEN: ${{ secrets.ANACONDA_TOKEN }}
-        run: anaconda --token ${{ env.ANACONDA_TOKEN }} upload --user dppy --label dev ${{ env.PACKAGE_NAME }}-*.tar.bz2
 
   upload_windows:
     needs: test_windows
 
-    if: ${{github.ref == 'refs/heads/master' || (startsWith(github.ref, 'refs/heads/release') == true) || github.event_name == 'push' && contains(github.ref, 'refs/tags/')}}
+    if: |
+      !github.event.pull_request.head.repo.fork  &&
+      (github.ref == 'refs/heads/master' || (startsWith(github.ref, 'refs/heads/release') == true) || github.event_name == 'push' && contains(github.ref, 'refs/tags/'))
 
     runs-on: windows-latest
 
@@ -488,6 +502,6 @@ jobs:
         run: conda install anaconda-client
 
       - name: Upload
+        run: anaconda --token ${{ env.ANACONDA_TOKEN }} upload --user dppy --label dev ${{ env.PACKAGE_NAME }}-*.tar.bz2
         env:
           ANACONDA_TOKEN: ${{ secrets.ANACONDA_TOKEN }}
-        run: anaconda --token ${{ env.ANACONDA_TOKEN }} upload --user dppy --label dev ${{ env.PACKAGE_NAME }}-*.tar.bz2
diff --git a/.gitignore b/.gitignore
index ea56758f290b..fda4c1635310 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,6 +8,12 @@ __pycache__/
 # Code project files
 .vscode
 
+# Files from test of code coverage
+coverage.xml
+
+# Backup files kept after git merge/rebase
+*.orig
+
 *dpnp_backend*
 dpnp/**/*.cpython*.so
 dpnp/**/*.pyd
diff --git a/doc/conf.py b/doc/conf.py
index cd7c9a1002e2..34ccf03a25e2 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -27,7 +27,7 @@
 # -- Project information -----------------------------------------------------
 
 project = 'dpnp'
-copyright = '2020, Intel'
+copyright = '2020-2022, Intel'
 author = 'Intel'
 
 # The short X.Y version
@@ -73,7 +73,7 @@
 #
 # This is also used if you do content translation via gettext catalogs.
 # Usually you set "language" from the command line for these cases.
-language = None
+language = 'en'
 
 # List of patterns, relative to source directory, that match files and
 # directories to ignore when looking for source files.
diff --git a/doc/reference/fft.rst b/doc/reference/fft.rst
index 0d3b0999b71e..2af0ee47793d 100644
--- a/doc/reference/fft.rst
+++ b/doc/reference/fft.rst
@@ -57,7 +57,9 @@ Helper routines
    dpnp.fft.rfftfreq
    dpnp.fft.fftshift
    dpnp.fft.ifftshift
-   dpnp.fft.config.set_cufft_callbacks
-   dpnp.fft.config.set_cufft_gpus
-   dpnp.fft.config.get_plan_cache
-   dpnp.fft.config.show_plan_cache_info
+
+   .. fft.config module is not implemented yet
+   .. dpnp.fft.config.set_cufft_callbacks
+   .. dpnp.fft.config.set_cufft_gpus
+   .. dpnp.fft.config.get_plan_cache
+   .. dpnp.fft.config.show_plan_cache_info
diff --git a/doc/reference/ndarray.rst b/doc/reference/ndarray.rst
index 670c312224d5..5fca216ec94c 100644
--- a/doc/reference/ndarray.rst
+++ b/doc/reference/ndarray.rst
@@ -11,4 +11,4 @@ For the basic concept of ``ndarray``\s, please refer to the `NumPy documentation
    :nosignatures:
 
    dpnp.ndarray
-   dpnp.dparray.dparray
+   dpnp.dpnp_array.dpnp_array
diff --git a/doc/reference/polynomials.rst b/doc/reference/polynomials.rst
index ad20cc6ad4bc..d86cedfe49a1 100644
--- a/doc/reference/polynomials.rst
+++ b/doc/reference/polynomials.rst
@@ -13,8 +13,9 @@ Polynomial Module
    :toctree: generated/
    :nosignatures:
 
-   dpnp.polynomial.polynomial.polyvander
-   dpnp.polynomial.polynomial.polycompanion
+   .. polynomial module is not implemented yet
+   .. dpnp.polynomial.polynomial.polyvander
+   .. dpnp.polynomial.polynomial.polycompanion
 
 
 Polyutils
@@ -24,9 +25,10 @@ Polyutils
    :toctree: generated/
    :nosignatures:
 
-   dpnp.polynomial.polyutils.as_series
-   dpnp.polynomial.polyutils.trimseq
-   dpnp.polynomial.polyutils.trimcoef
+   .. polyutils module is not implemented yet
+   .. dpnp.polynomial.polyutils.as_series
+   .. dpnp.polynomial.polyutils.trimseq
+   .. dpnp.polynomial.polyutils.trimcoef
 
 
 Poly1d