diff --git a/paddle/scripts/paddle_build.sh b/paddle/scripts/paddle_build.sh
index d1db8feb217528b8f9422cd7e6bbcb0771245603..39676b916e50470ac9774f3564b4bdc3a8fcb20f 100755
--- a/paddle/scripts/paddle_build.sh
+++ b/paddle/scripts/paddle_build.sh
@@ -229,6 +229,7 @@ function cmake_base() {
         -DWITH_CNCL=${WITH_CNCL:-OFF}
         -DWITH_XPU=${WITH_XPU:-OFF}
         -DWITH_MLU=${WITH_MLU:-OFF}
+        -DWITH_IPU=${WITH_IPU:-OFF}
         -DLITE_GIT_TAG=release/v2.10
         -DWITH_UNITY_BUILD=${WITH_UNITY_BUILD:-OFF}
         -DWITH_XPU_BKCL=${WITH_XPU_BKCL:-OFF}
@@ -280,6 +281,7 @@ EOF
         -DLITE_GIT_TAG=release/v2.10 \
         -DWITH_XPU=${WITH_XPU:-OFF} \
         -DWITH_MLU=${WITH_MLU:-OFF} \
+        -DWITH_IPU=${WITH_IPU:-OFF} \
         -DWITH_CNCL=${WITH_CNCL:-OFF} \
         -DXPU_SDK_ROOT=${XPU_SDK_ROOT:-""} \
         -DWITH_LITE=${WITH_LITE:-OFF} \
@@ -1283,6 +1285,8 @@ function card_test() {
         CUDA_DEVICE_COUNT=$(rocm-smi -i | grep GPU | wc -l)
     elif [ "${WITH_MLU}" == "ON" ];then
         CUDA_DEVICE_COUNT=1
+    elif [ "${WITH_IPU}" == "ON" ];then
+        CUDA_DEVICE_COUNT=1
     else
         CUDA_DEVICE_COUNT=$(nvidia-smi -L | wc -l)
     fi
@@ -2240,6 +2244,130 @@ set -ex
     fi   
 }
 
+function parallel_test_base_ipu() {
+    mkdir -p ${PADDLE_ROOT}/build
+    cd ${PADDLE_ROOT}/build/python/paddle/fluid/tests/unittests/ipu
+    if [ ${WITH_TESTING:-ON} == "ON" ] ; then
+    cat <<EOF
+    ========================================
+    Running unit ipu tests ...
+    ========================================
+EOF
+
+set +x
+        test_cases=$(ctest -N -V) # get all test cases
+        get_quickly_disable_ut||disable_ut_quickly='disable_ut'   # indicate whether the case was in quickly disable list
+        while read -r line; do
+            if [[ "$line" == "" ]]; then
+                continue
+            fi
+            read testcase <<< $(echo "$line"|grep -oEi "\w+$")
+            if [[ "$single_card_tests" == "" ]]; then
+                single_card_tests="^$testcase$"
+            else
+                single_card_tests="$single_card_tests|^$testcase$"
+            fi
+        done <<< "$test_cases";
+
+        ut_actual_total_startTime_s=`date +%s`
+
+        card_test "$single_card_tests" 1 # run cases 1 job each time with single IPU
+        collect_failed_tests
+
+        # add unit test retry for IPU
+        rm -f $tmp_dir/*
+        exec_times=0
+        retry_unittests_record=''
+        retry_time=4
+        exec_time_array=('first' 'second' 'third' 'fourth')
+        parallel_failed_tests_exec_retry_threshold=120
+        exec_retry_threshold=30
+        is_retry_execuate=0
+        rerun_ut_startTime_s=`date +%s`
+        if [ -n "$failed_test_lists" ];then
+            if [ ${TIMEOUT_DEBUG_HELP:-OFF} == "ON" ];then
+                bash $PADDLE_ROOT/tools/timeout_debug_help.sh "$failed_test_lists"    # cat logs for tiemout uts which killed by ctest
+            fi
+            need_retry_ut_str=$(echo "$failed_test_lists" | grep -oEi "\-.+\(.+\)" | sed 's/(.\+)//' | sed 's/- //' )
+            need_retry_ut_arr=(${need_retry_ut_str})
+            need_retry_ut_count=${#need_retry_ut_arr[@]}
+            retry_unittests=$(echo "$failed_test_lists" | grep -oEi "\-.+\(.+\)" | sed 's/(.\+)//' | sed 's/- //' )
+            while ( [ $exec_times -lt $retry_time ] )
+                do
+                    if [[ "${exec_times}" == "0" ]] ;then
+                        if [ $need_retry_ut_count -lt $parallel_failed_tests_exec_retry_threshold ];then
+                            is_retry_execuate=0
+                        else
+                            is_retry_execuate=1
+                        fi
+                    elif [[ "${exec_times}" == "1" ]] ;then
+                        need_retry_ut_str=$(echo "$failed_test_lists" | grep -oEi "\-.+\(.+\)" | sed 's/(.\+)//' | sed 's/- //' )
+                        need_retry_ut_arr=(${need_retry_ut_str})
+                        need_retry_ut_count=${#need_retry_ut_arr[@]} 
+                        if [ $need_retry_ut_count -lt $exec_retry_threshold ];then
+                            is_retry_execuate=0
+                        else
+                            is_retry_execuate=1
+                        fi
+                    fi
+                    if [[ "$is_retry_execuate" == "0" ]];then
+                        set +e
+                        retry_unittests_record="$retry_unittests_record$failed_test_lists"
+                        failed_test_lists_ult=`echo "${failed_test_lists}" |grep -Po '[^ ].*$'`
+                        set -e
+                        if [[ "${exec_times}" == "1" ]] || [[ "${exec_times}" == "3" ]];then
+                            if [[ "${failed_test_lists}" == "" ]];then
+                                break
+                            else
+                                retry_unittests=$(echo "$failed_test_lists" | grep -oEi "\-.+\(.+\)" | sed 's/(.\+)//' | sed 's/- //' )
+                            fi
+                        fi
+                        echo "========================================="
+                        echo "This is the ${exec_time_array[$exec_times]} time to re-run"
+                        echo "========================================="
+                        echo "The following unittest will be re-run:"
+                        echo "${retry_unittests}"                    
+                        for line in ${retry_unittests[@]} ;
+                            do
+                                tmp_one_tmp="$( echo $single_card_tests | grep -oEi $line )"
+
+                                if [[ "$tmp_one_tmp" != ""  ]]; then
+                                    if [[ "$one_card_retry" == "" ]]; then
+                                        one_card_retry="^$line$"
+                                    else
+                                        one_card_retry="$one_card_retry|^$line$"
+                                    fi
+                                fi
+
+                            done
+
+                        if [[ "$one_card_retry" != "" ]]; then
+                            card_test "$one_card_retry" 1 # run cases 1 job each time with single GPU
+                        fi
+                        exec_times=$[$exec_times+1]
+                        failed_test_lists=''
+                        collect_failed_tests
+                        rm -f $tmp_dir/*
+                        one_card_retry=''
+                    else 
+                        break
+                    fi
+
+                done
+        fi
+
+        rerun_ut_endTime_s=`date +%s`
+        
+        echo "ipipe_log_param_Rerun_TestCases_Total_Time: $[ $rerun_ut_endTime_s - $rerun_ut_startTime_s ]s" >> ${PADDLE_ROOT}/build/build_summary.txt
+        ut_actual_total_endTime_s=`date +%s`
+        echo "ipipe_log_param_actual_TestCases_Total_Time: $[ $ut_actual_total_endTime_s - $ut_actual_total_startTime_s ]s" >> ${PADDLE_ROOT}/build/build_summary.txt
+        if [[ "$EXIT_CODE" != "0" ]]; then
+            show_ut_retry_result
+        fi
+set -ex
+    fi   
+}
+
 function parallel_test() {
     mkdir -p ${PADDLE_ROOT}/build
     cd ${PADDLE_ROOT}/build
@@ -2257,6 +2385,8 @@ function parallel_test() {
         parallel_test_base_npu
     elif [ "$WITH_MLU" == "ON" ];then
         parallel_test_base_mlu
+    elif [ "$WITH_IPU" == "ON" ];then
+        parallel_test_base_ipu
     else
         parallel_test_base_cpu ${PROC_RUN:-1}
     fi
@@ -3022,6 +3152,11 @@ function main() {
         parallel_test
         check_coverage
         ;;
+      check_ipu_coverage)
+        cmake_gen_and_build ${PYTHON_ABI:-""} ${parallel_number}
+        parallel_test
+        check_coverage
+        ;;
       reuse_so_cicheck_py35)
         reuse_so_cache
         parallel_test
diff --git a/python/paddle/fluid/tests/unittests/ipu/CMakeLists.txt b/python/paddle/fluid/tests/unittests/ipu/CMakeLists.txt
index 959700ad743b40420200b56055354279386a9a7c..79a2430a161703348824d8e4e687bf85569c408a 100644
--- a/python/paddle/fluid/tests/unittests/ipu/CMakeLists.txt
+++ b/python/paddle/fluid/tests/unittests/ipu/CMakeLists.txt
@@ -4,5 +4,11 @@ if(WITH_IPU)
 
     foreach(TEST_OP ${TEST_OPS})
         py_test_modules(${TEST_OP} MODULES ${TEST_OP})
+        # set all UTs timeout to 200s
+        set_tests_properties(${TEST_OP} PROPERTIES TIMEOUT 200)    
     endforeach(TEST_OP)
+
+    set_tests_properties(test_conv_op_ipu PROPERTIES TIMEOUT 300)
+    set_tests_properties(test_elemetwise_x_op_ipu PROPERTIES TIMEOUT 300)
+    set_tests_properties(test_reduce_x_op_ipu PROPERTIES TIMEOUT 600)
 endif()
diff --git a/python/paddle/fluid/tests/unittests/ipu/test_activation_x_op.py b/python/paddle/fluid/tests/unittests/ipu/test_activation_x_op.py
deleted file mode 100644
index 58a88c113fc0b6b82c1c58d50a1b0824cb530632..0000000000000000000000000000000000000000
--- a/python/paddle/fluid/tests/unittests/ipu/test_activation_x_op.py
+++ /dev/null
@@ -1,126 +0,0 @@
-#  Copyright (c) 2021 PaddlePaddle Authors. All Rights Reserved.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#    http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-import unittest
-
-import numpy as np
-import paddle
-import paddle.fluid as fluid
-import paddle.fluid.compiler as compiler
-import paddle.nn.functional as F
-import paddle.optimizer
-import paddle.static
-from paddle.fluid.tests.unittests.ipu.op_test_ipu import (IPUOpTest,
-                                                          np_dtype_to_fluid_str)
-
-paddle.enable_static()
-
-
-@unittest.skipIf(not paddle.is_compiled_with_ipu(),
-                 "core is not compiled with IPU")
-class TestRelu(IPUOpTest):
-    def setUp(self):
-        self.set_atol()
-        self.set_training()
-        self.init_op()
-
-    def init_op(self):
-        self.op = paddle.fluid.layers.relu
-
-    def set_feed_attr(self):
-        self.feed_shape = [x.shape for x in self.feed.values()]
-        self.feed_list = list(self.feed.keys())
-        self.feed_dtype = [
-            np_dtype_to_fluid_str(x.dtype) for x in self.feed.values()
-        ]
-
-    def _test_base(self, run_ipu=True):
-        scope = fluid.core.Scope()
-        main_prog = paddle.static.Program()
-        startup_prog = paddle.static.Program()
-        SEED = self.SEED
-        main_prog.random_seed = SEED
-        startup_prog.random_seed = SEED
-
-        with fluid.scope_guard(scope):
-            with paddle.static.program_guard(main_prog, startup_prog):
-                x = paddle.static.data(
-                    name=self.feed_list[0],
-                    shape=self.feed_shape[0],
-                    dtype=self.feed_dtype[0])
-                out = self.op(x, **self.attrs)
-
-                fetch_list = [out.name]
-
-            if run_ipu:
-                place = paddle.IPUPlace()
-            else:
-                place = paddle.CPUPlace()
-            exe = paddle.static.Executor(place)
-            exe.run(startup_prog)
-
-            if run_ipu:
-                feed_list = self.feed_list
-                ipu_strategy = paddle.static.IpuStrategy()
-                ipu_strategy.SetGraphConfig(is_training=self.is_training)
-                program = compiler.IpuCompiler(
-                    main_prog,
-                    ipu_strategy=ipu_strategy).compile(feed_list, fetch_list)
-            else:
-                program = main_prog
-
-            result = exe.run(program, feed=self.feed, fetch_list=fetch_list)
-            return result[0]
-
-    def run_test_base(self):
-        res0 = self._test_base(False)
-        res1 = self._test_base(True)
-
-        self.assertTrue(
-            np.allclose(
-                res0.flatten(), res1.flatten(), atol=self.atol))
-
-        self.assertTrue(res0.shape == res1.shape)
-
-    def test_case0(self):
-        self.feed = {
-            "x": np.random.uniform(size=[1, 3, 10, 10]).astype('float32'),
-        }
-        self.attrs = {}
-        self.set_feed_attr()
-        self.run_test_base()
-
-
-class TestTanh(TestRelu):
-    def init_op(self):
-        self.op = F.tanh
-
-
-class TestLog(TestRelu):
-    def init_op(self):
-        self.op = paddle.fluid.layers.log
-
-
-class TestSigmoid(TestRelu):
-    def init_op(self):
-        self.op = F.sigmoid
-
-
-class TestSqrt(TestRelu):
-    def init_op(self):
-        self.op = paddle.fluid.layers.sqrt
-
-
-if __name__ == "__main__":
-    unittest.main()
diff --git a/python/paddle/fluid/tests/unittests/ipu/test_batch_norm_op_ipu.py b/python/paddle/fluid/tests/unittests/ipu/test_batch_norm_op_ipu.py
index 1dab958c1ecbc806df94c651cf4a2d6cd82f3ddb..c640cd441f1b2589bcc3ffa466b865d1fb34c582 100644
--- a/python/paddle/fluid/tests/unittests/ipu/test_batch_norm_op_ipu.py
+++ b/python/paddle/fluid/tests/unittests/ipu/test_batch_norm_op_ipu.py
@@ -115,7 +115,7 @@ class TestBase(IPUOpTest):
 
 class TestCase1(TestBase):
     def set_atol(self):
-        self.atol = 1e-7
+        self.atol = 1e-6
         self.rtol = 1e-6
         self.atol_fp16 = 1e-3
         self.rtol_fp16 = 1e-3
@@ -129,7 +129,7 @@ class TestCase1(TestBase):
 
 class TestCase2(TestBase):
     def set_atol(self):
-        self.atol = 1e-7
+        self.atol = 1e-6
         self.rtol = 1e-6
         self.atol_fp16 = 1e-3
         self.rtol_fp16 = 1e-3
diff --git a/python/paddle/fluid/tests/unittests/ipu/test_ipu_fp16_support.py b/python/paddle/fluid/tests/unittests/ipu/test_ipu_fp16_support.py
deleted file mode 100644
index aa6c05dc59a87f844c19912be484a4b007f0adfc..0000000000000000000000000000000000000000
--- a/python/paddle/fluid/tests/unittests/ipu/test_ipu_fp16_support.py
+++ /dev/null
@@ -1,109 +0,0 @@
-#  Copyright (c) 2021 PaddlePaddle Authors. All Rights Reserved.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#    http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-import unittest
-
-import numpy as np
-import paddle
-import paddle.fluid as fluid
-import paddle.fluid.compiler as compiler
-import paddle.optimizer
-import paddle.static
-from paddle.fluid.tests.unittests.ipu.op_test_ipu import (IPUOpTest,
-                                                          np_dtype_to_fluid_str)
-
-paddle.enable_static()
-
-
-@unittest.skipIf(not paddle.is_compiled_with_ipu(),
-                 "core is not compiled with IPU")
-class TestBase(IPUOpTest):
-    def setUp(self):
-        self.set_atol()
-        self.set_feed()
-        self.set_feed_attr()
-        self.set_attrs()
-
-    def set_feed(self):
-        np_data = np.random.uniform(low=-1, high=1, size=[1, 3, 100, 100])
-        self.feed_ipu = {"x": np_data.astype('float16')}
-        self.feed_cpu = {"x": np_data.astype('float32')}
-
-    def set_feed_attr(self):
-        self.feed_shape = [x.shape for x in self.feed_cpu.values()]
-        self.feed_list = list(self.feed_cpu.keys())
-        self.feed_dtype = [
-            np_dtype_to_fluid_str(x.dtype) for x in self.feed_cpu.values()
-        ]
-
-    def set_attrs(self):
-        self.attrs = {}
-
-    def _test_base(self, run_ipu=True):
-        scope = fluid.core.Scope()
-        main_prog = paddle.static.Program()
-        startup_prog = paddle.static.Program()
-        SEED = self.SEED
-        main_prog.random_seed = SEED
-        startup_prog.random_seed = SEED
-
-        with fluid.scope_guard(scope):
-            with paddle.static.program_guard(main_prog, startup_prog):
-                x = paddle.static.data(
-                    name=self.feed_list[0],
-                    shape=self.feed_shape[0],
-                    dtype=self.feed_dtype[0])
-                conv1 = paddle.static.nn.conv2d(
-                    x, num_filters=3, filter_size=3, bias_attr=False)
-                conv2 = paddle.static.nn.conv2d(
-                    x, num_filters=3, filter_size=3, bias_attr=False)
-                add1 = conv1 + conv2
-                conv3 = paddle.static.nn.conv2d(
-                    add1, num_filters=8, filter_size=8, bias_attr=False)
-                out = paddle.fluid.layers.relu(conv3, **self.attrs)
-                fetch_list = [out.name]
-            if run_ipu:
-                place = paddle.IPUPlace()
-            else:
-                place = paddle.CPUPlace()
-            exe = paddle.static.Executor(place)
-            exe.run(startup_prog)
-
-            feed = self.feed_ipu if run_ipu else self.feed_cpu
-            if run_ipu:
-                feed_list = self.feed_list
-                ipu_strategy = paddle.static.IpuStrategy()
-                ipu_strategy.SetGraphConfig(is_training=False)
-                ipu_strategy.SetHalfConfig(enable_fp16=True)
-                program = compiler.IPUCompiledProgram(
-                    main_prog,
-                    ipu_strategy=ipu_strategy).compile(feed_list, fetch_list)
-            else:
-                feed_list = self.feed_list
-                program = main_prog
-            result = exe.run(program, feed=feed, fetch_list=fetch_list)
-            return result[0]
-
-    def test_base(self):
-        res0 = self._test_base(False)
-        res1 = self._test_base(True)
-
-        self.assertTrue(res0.shape == res1.shape)
-        mae = np.mean(np.abs(res0.flatten() - res1.flatten()))
-        print("mae is ", mae)
-        self.assertTrue(mae < 0.001)
-
-
-if __name__ == "__main__":
-    unittest.main()