diff --git a/.ci/pipeline/ci.yml b/.ci/pipeline/ci.yml
index 2a887e854a..26a80ba264 100644
--- a/.ci/pipeline/ci.yml
+++ b/.ci/pipeline/ci.yml
@@ -24,6 +24,7 @@ trigger:
     - requirements-doc.txt
     - doc/
     - .ci/pipeline/docs.yml
+    - .circleci/config.yml
 
 pr:
   branches:
@@ -35,6 +36,7 @@ pr:
     - requirements-doc.txt
     - doc/
     - .ci/pipeline/docs.yml
+    - .circleci/config.yml
 
 variables:
   - name: MACOSX_DEPLOYMENT_TARGET
diff --git a/.ci/scripts/describe_system.sh b/.ci/scripts/describe_system.sh
index 6e16e67a99..038a0f7a1b 100755
--- a/.ci/scripts/describe_system.sh
+++ b/.ci/scripts/describe_system.sh
@@ -35,6 +35,10 @@ else
     echo "Unable to get operating system via uname or python/platform"
 fi
 echo
+# meminfo
+if [ -f /proc/meminfo ]; then
+    cat /proc/meminfo
+fi
 # Compilers
 echo "Compilers:"
 if [ -x "$(command -v gcc)" ]; then
diff --git a/.circleci/config.yml b/.circleci/config.yml
index 3731ba0d27..1b462afb89 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -29,7 +29,10 @@ jobs:
           name: Setting up build environment
           command: |
             ls -la
+            sudo apt-get update
+            sudo apt-get install -q -y gcc-10 g++-10
             source ./.circleci/setup_env.sh
+            bash .ci/scripts/describe_system.sh
       - run:
           name: Building daal4py
           command: |
@@ -37,7 +40,7 @@ jobs:
             conda activate bld
             export DALROOT=$CONDA_PREFIX
             export NO_DIST=1
-            python setup.py install --single-version-externally-managed --record=record.txt
+            CC=gcc-10 CXX=g++-10 python setup.py install --single-version-externally-managed --record=record.txt
       - run:
           name: Building sklearnex
           command: |
@@ -70,7 +73,10 @@ jobs:
           name: Setting up build environment
           command: |
             ls -la
+            sudo apt-get update
+            sudo apt-get install -q -y gcc-10 g++-10
             source ./.circleci/setup_env.sh 3.10
+            bash .ci/scripts/describe_system.sh
       - run:
           name: Building daal4py
           command: |
@@ -78,7 +84,7 @@ jobs:
             conda activate bld
             export DALROOT=$CONDA_PREFIX
             export NO_DIST=1
-            python setup.py install --single-version-externally-managed --record=record.txt
+            CC=gcc-10 CXX=g++-10 python setup.py install --single-version-externally-managed --record=record.txt
       - run:
           name: Testing sklearn patches
           no_output_timeout: 20m
diff --git a/scripts/build_backend.py b/scripts/build_backend.py
index 1951a1cd30..024c6a6a8c 100755
--- a/scripts/build_backend.py
+++ b/scripts/build_backend.py
@@ -22,6 +22,8 @@
 import subprocess
 from distutils import log
 from distutils.sysconfig import get_python_inc, get_config_var
+import multiprocessing
+from math import floor
 
 IS_WIN = False
 IS_MAC = False
@@ -177,8 +179,16 @@ def custom_build_cmake_clib(iface, cxx=None, onedal_major_binary_version=1, no_d
             "-DONEDAL_DIST_SPMD:BOOL=ON"
         ]
 
-    import multiprocessing
     cpu_count = multiprocessing.cpu_count()
+    # limit parallel cmake jobs if memory size is insufficient
+    # TODO: add on all platforms
+    if IS_LIN:
+        with open('/proc/meminfo', 'r') as meminfo_file_obj:
+            memfree = meminfo_file_obj.read().split('\n')[1].split(' ')
+            while '' in memfree:
+                memfree.remove('')
+            memfree = int(memfree[1])  # total memory in kB
+        cpu_count = min(cpu_count, floor(max(1, memfree / 2 ** 20)))
 
     make_args = [
         "cmake",