Caffe make runtest failed 2 tests when using Intel MKL on Ubuntu 16.04

[Truong Dang Manh]

Hi, I'm trying to buid Caffe using Intel MKL (2018 update 1) on Ubuntu 16.04. Make all and make test were fine, but when I run "make runtest" 2 tests failed:
[  FAILED  ] 2 tests, listed below:
[  FAILED  ] NetTest/0.TestFromTo, where TypeParam = caffe::CPUDevice<float>
[  FAILED  ] NetTest/1.TestFromTo, where TypeParam = caffe::CPUDevice<double>

 2 FAILED TESTS
Makefile:533: recipe for target 'runtest' failed
make: *** [runtest] Error 1

Here are the detailed results:
src/caffe/test/test_net.cpp:1446: Failure
Value of: *loss_ptr
  Actual: 6.90054
Expected: loss
Which is: 7.02086
src/caffe/test/test_net.cpp:1446: Failure
Value of: *loss_ptr
  Actual: 6.90054
Expected: loss
Which is: 7.02086
[  FAILED  ] NetTest/1.TestFromTo, where TypeParam = caffe::CPUDevice<double> (6 ms)

src/caffe/test/test_net.cpp:1446: Failure
Value of: *loss_ptr
  Actual: 6.92081
Expected: loss
Which is: 6.95296
src/caffe/test/test_net.cpp:1446: Failure
Value of: *loss_ptr
  Actual: 6.92081
Expected: loss
Which is: 6.95296
[  FAILED  ] NetTest/0.TestFromTo, where TypeParam = caffe::CPUDevice<float> (102 ms)

Please help me, thank you very much