[MXNET-908] Enable minimal OSX Travis build (v1.3.x)

.travis.yml

@@ -1,108 +1,32 @@
-sudo: false
+sudo: true
 
 language: cpp
 
+cache: ccache
+
 os:
-  # - linux
   - osx
 
-osx_image: xcode8
-
-env:
-  # code analysis
-  # - TASK=lint
-  # build mxnet.so with CUDA
-  # - TASK=build
-  # run tests/cpp
-  - TASK=cpp_test
-  # run tests/python
-  - TASK=python_test
-  - TASK=r_test
-  # - TASK=julia JULIA_VER=0.4
-  # - TASK=scala_test
-
-  # TODO, R test, distributed test, clang, more g++ versions
+osx_image: xcode9.4
 
 matrix:
   include:
-    - # os: linux
-      # dist: trusty
-      # env: TASK=perl_test
     - os: osx
-      ## sudo is required because
-      ## prexexisting packages conflict
-      ## with new ones.
-      ## would be nice to have macports
-      ## on travis osx, it has all needed perl packages
-      sudo: required
-      env: TASK=perl_test
-#       env: TASK=julia JULIA_VER=0.4
-#     - os: linux
-#       env: TASK=build
-#     - os: linux
-#       env: TASK=cpp_test
-#     - os: linux
-#       env: TASK=python_test
-#     - os: linux
-#       env: TASK=r_test
-#     - os: linux
-#       env: TASK=scala_test
-
-# dependent apt packages
-addons:
-  apt:
-    sources:
-      - ubuntu-toolchain-r-test
-    packages:
-      - doxygen
-      - wget
-      - git
-      - libcurl4-openssl-dev
-      - unzip
-      - libatlas-dev
-      - libopencv-dev
-      - gcc-4.8
-      - g++-4.8
-      - python-numpy
-      - python-nose
-      - python3-numpy
-      - python3-dev
-      - python3-nose
-      - python-h5py
-      - python3-h5py
-      - graphviz
-      - libmouse-perl
-      - pdl
-      - cpanminus
-      - swig
-      - libgraphviz-perl
 
 before_install:
-  - export NVCC_PREFIX=${HOME}
-  - source dmlc-core/scripts/travis/travis_setup_env.sh
   - export PYTHONPATH=${PYTHONPATH}:${PWD}/python
-  - export MAVEN_SKIP_RC=true
-  - export MAVEN_OPTS="-Xmx512m -XX:MaxPermSize=256m -XX:-UseGCOverheadLimit -XX:+CMSClassUnloadingEnabled -XX:+UseConcMarkSweepGC"
 
 install:
-  - source tests/travis/setup.sh
-
+  - brew install ccache
+  - export PATH="/usr/local/opt/ccache/libexec:$PATH"
+  - source ci/travis/install.sh
+
+# We build with 2 concurrent jobs to match the number of cores present on MacOS virutal machines.
+# nproc does not report the correct number of cores reliably in Travis, so using nproc is not
+# recommended.
+# https://docs.travis-ci.com/user/reference/overview/
 script:
-  - tests/travis/run_test.sh
-
-cache:
-  directories:
-    - ${HOME}/.cache/usr
-
-before_cache:
-  - dmlc-core/scripts/travis/travis_before_cache.sh
-
-after_failure:
-  - tests/travis/travis_after_failure.sh
-
-notifications:
-# Emails are sent to the committer's git-configured email address by default,
-  email:
-    on_success: change
-    on_failure: always
-  #slack: dmlc:NmroCzntCiWOuxUZpii40USd
+  - export MXNET_STORAGE_FALLBACK_LOG_VERBOSE=0
+  - mv make/osx.mk config.mk
+  - make -j 2
+  - python -m nose --verbose tests/python/unittest/

tests/travis/travis_after_failure.sh → ci/travis/install.sh

@@ -17,10 +17,14 @@
 # specific language governing permissions and limitations
 # under the License.
 
-
-if [ ${TASK} == "r_test" ]; then
-    echo "Print the install log..."
-    cat mxnet.Rcheck/*.out
-    echo "Print the check log..."
-    cat mxnet.Rcheck/*.log
+if [ ${TRAVIS_OS_NAME} == "osx" ]; then
+    brew update
+    brew install opencv
+    brew install python3
+    brew install fftw
+    brew install libpng
+    brew install ImageMagick
+    brew install swig
+    python -m pip install --user nose numpy cython scipy requests mock
+    python3 -m pip install --user nose numpy cython scipy requests mock
 fi

src/initialize.cc

@@ -60,7 +60,7 @@ class LibraryInitializer {
         // Make children single threaded since they are typically workers
         dmlc::SetEnv("MXNET_CPU_WORKER_NTHREADS", 1);
         dmlc::SetEnv("OMP_NUM_THREADS", 1);
-#if MXNET_USE_OPENCV
+#if MXNET_USE_OPENCV && !__APPLE__
         cv::setNumThreads(0);  // disable opencv threading
 #endif  // MXNET_USE_OPENCV
         engine::OpenMP::Get()->set_enabled(false);