Further improvements and savings in Jenkins pipeline

Jenkinsfile

@@ -173,8 +173,10 @@ def Doxygen() {
     sh """
     ${dockerRun} ${container_type} ${docker_binary} tests/ci_build/doxygen.sh ${BRANCH_NAME}
     """
-    echo 'Uploading doc...'
-    s3Upload file: "build/${BRANCH_NAME}.tar.bz2", bucket: 'xgboost-docs', acl: 'PublicRead', path: "doxygen/${BRANCH_NAME}.tar.bz2"
+    if (env.BRANCH_NAME == 'master' || env.BRANCH_NAME.startsWith('release')) {
+      echo 'Uploading doc...'
+      s3Upload file: "build/${BRANCH_NAME}.tar.bz2", bucket: 'xgboost-docs', acl: 'PublicRead', path: "doxygen/${BRANCH_NAME}.tar.bz2"
+    }
     deleteDir()
   }
 }
@@ -245,17 +247,24 @@ def BuildCUDA(args) {
     def container_type = "gpu_build"
     def docker_binary = "docker"
     def docker_args = "--build-arg CUDA_VERSION=${args.cuda_version}"
+    def arch_flag = ""
+    if (env.BRANCH_NAME != 'master' && !(env.BRANCH_NAME.startsWith('release'))) {
+      arch_flag = "-DGPU_COMPUTE_VER=75"
+    }
     sh """
-    ${dockerRun} ${container_type} ${docker_binary} ${docker_args} tests/ci_build/build_via_cmake.sh -DUSE_CUDA=ON -DUSE_NCCL=ON -DOPEN_MP:BOOL=ON -DHIDE_CXX_SYMBOLS=ON
+    ${dockerRun} ${container_type} ${docker_binary} ${docker_args} tests/ci_build/build_via_cmake.sh -DUSE_CUDA=ON -DUSE_NCCL=ON -DOPEN_MP:BOOL=ON -DHIDE_CXX_SYMBOLS=ON ${arch_flag}
     ${dockerRun} ${container_type} ${docker_binary} ${docker_args} bash -c "cd python-package && rm -rf dist/* && python setup.py bdist_wheel --universal"
     ${dockerRun} ${container_type} ${docker_binary} ${docker_args} python3 tests/ci_build/rename_whl.py python-package/dist/*.whl ${commit_id} manylinux2010_x86_64
     """
     // Stash wheel for CUDA 10.0 target
     if (args.cuda_version == '10.0') {
       echo 'Stashing Python wheel...'
       stash name: 'xgboost_whl_cuda10', includes: 'python-package/dist/*.whl'
-      path = ("${BRANCH_NAME}" == 'master') ? '' : "${BRANCH_NAME}/"
-      s3Upload bucket: 'xgboost-nightly-builds', path: path, acl: 'PublicRead', workingDir: 'python-package/dist', includePathPattern:'**/*.whl'
+      if (env.BRANCH_NAME == 'master' || env.BRANCH_NAME.startsWith('release')) {
+        echo 'Uploading Python wheel...'
+        path = ("${BRANCH_NAME}" == 'master') ? '' : "${BRANCH_NAME}/"
+        s3Upload bucket: 'xgboost-nightly-builds', path: path, acl: 'PublicRead', workingDir: 'python-package/dist', includePathPattern:'**/*.whl'
+      }
       echo 'Stashing C++ test executable (testxgboost)...'
       stash name: 'xgboost_cpp_tests', includes: 'build/testxgboost'
     }
@@ -289,8 +298,10 @@ def BuildJVMDoc() {
     sh """
     ${dockerRun} ${container_type} ${docker_binary} tests/ci_build/build_jvm_doc.sh ${BRANCH_NAME}
     """
-    echo 'Uploading doc...'
-    s3Upload file: "jvm-packages/${BRANCH_NAME}.tar.bz2", bucket: 'xgboost-docs', acl: 'PublicRead', path: "${BRANCH_NAME}.tar.bz2"
+    if (env.BRANCH_NAME == 'master' || env.BRANCH_NAME.startsWith('release')) {
+      echo 'Uploading doc...'
+      s3Upload file: "jvm-packages/${BRANCH_NAME}.tar.bz2", bucket: 'xgboost-docs', acl: 'PublicRead', path: "${BRANCH_NAME}.tar.bz2"
+    }
     deleteDir()
   }
 }

Jenkinsfile-win64

@@ -10,6 +10,15 @@ def commit_id   // necessary to pass a variable from one stage to another
 
 pipeline {
   agent none
+
+  // Setup common job properties
+  options {
+    timestamps()
+    timeout(time: 240, unit: 'MINUTES')
+    buildDiscarder(logRotator(numToKeepStr: '10'))
+    preserveStashes()
+  }
+
   // Build stages
   stages {
     stage('Jenkins Win64: Initialize') {
@@ -29,7 +38,7 @@ pipeline {
       steps {
         script {
           parallel ([
-            'build-win64-cuda10.0': { BuildWin64() }
+            'build-win64-cuda10.1': { BuildWin64() }
           ])
         }
         milestone ordinal: 2
@@ -40,8 +49,7 @@ pipeline {
       steps {
         script {
           parallel ([
-            'test-win64-cpu': { TestWin64CPU() },
-            'test-win64-gpu-cuda10.1': { TestWin64GPU(cuda_target: 'cuda10_1') }
+            'test-win64-cuda10.1': { TestWin64() },
           ])
         }
         milestone ordinal: 3
@@ -66,14 +74,18 @@ def checkoutSrcs() {
 }
 
 def BuildWin64() {
-  node('win64 && build && cuda10') {
+  node('win64 && cuda10_unified') {
     unstash name: 'srcs'
     echo "Building XGBoost for Windows AMD64 target..."
     bat "nvcc --version"
+    def arch_flag = ""
+    if (env.BRANCH_NAME != 'master' && !(env.BRANCH_NAME.startsWith('release'))) {
+      arch_flag = "-DGPU_COMPUTE_VER=75"
+    }
     bat """
     mkdir build
     cd build
-    cmake .. -G"Visual Studio 15 2017 Win64" -DUSE_CUDA=ON -DCMAKE_VERBOSE_MAKEFILE=ON -DGOOGLE_TEST=ON -DUSE_DMLC_GTEST=ON
+    cmake .. -G"Visual Studio 15 2017 Win64" -DUSE_CUDA=ON -DCMAKE_VERBOSE_MAKEFILE=ON -DGOOGLE_TEST=ON -DUSE_DMLC_GTEST=ON ${arch_flag}
     """
     bat """
     cd build
@@ -91,61 +103,41 @@ def BuildWin64() {
     """
     echo 'Stashing Python wheel...'
     stash name: 'xgboost_whl', includes: 'python-package/dist/*.whl'
-    path = ("${BRANCH_NAME}" == 'master') ? '' : "${BRANCH_NAME}/"
-    s3Upload bucket: 'xgboost-nightly-builds', path: path, acl: 'PublicRead', workingDir: 'python-package/dist', includePathPattern:'**/*.whl'
+    if (env.BRANCH_NAME == 'master' || env.BRANCH_NAME.startsWith('release')) {
+      echo 'Uploading Python wheel...'
+      path = ("${BRANCH_NAME}" == 'master') ? '' : "${BRANCH_NAME}/"
+      s3Upload bucket: 'xgboost-nightly-builds', path: path, acl: 'PublicRead', workingDir: 'python-package/dist', includePathPattern:'**/*.whl'
+    }
     echo 'Stashing C++ test executable (testxgboost)...'
     stash name: 'xgboost_cpp_tests', includes: 'build/testxgboost.exe'
     stash name: 'xgboost_cli', includes: 'xgboost.exe'
     deleteDir()
   }
 }
 
-def TestWin64CPU() {
-  node('win64 && cpu') {
+def TestWin64() {
+  node('win64 && cuda10_unified') {
     unstash name: 'srcs'
     unstash name: 'xgboost_whl'
     unstash name: 'xgboost_cli'
-    echo "Test Win64 CPU"
-    echo "Installing Python wheel..."
-    bat "conda activate && (python -m pip uninstall -y xgboost || cd .)"
-    bat """
-    conda activate && for /R %%i in (python-package\\dist\\*.whl) DO python -m pip install "%%i"
-    """
-    echo "Installing Python dependencies..."
-    bat """
-     conda activate && conda install -y hypothesis && conda upgrade scikit-learn pandas numpy hypothesis
-    """
-    echo "Running Python tests..."
-    bat "conda activate && python -m pytest -v -s --fulltrace tests\\python"
-    bat "conda activate && python -m pip uninstall -y xgboost"
-    deleteDir()
-  }
-}
-
-def TestWin64GPU(args) {
-  node("win64 && gpu && ${args.cuda_target}") {
-    unstash name: 'srcs'
-    unstash name: 'xgboost_whl'
     unstash name: 'xgboost_cpp_tests'
-    echo "Test Win64 GPU (${args.cuda_target})"
+    echo "Test Win64"
     bat "nvcc --version"
     echo "Running C++ tests..."
     bat "build\\testxgboost.exe"
-    echo "Installing Python wheel..."
-    bat "conda activate && (python -m pip uninstall -y xgboost || cd .)"
-    bat """
-    conda activate && for /R %%i in (python-package\\dist\\*.whl) DO python -m pip install "%%i"
-    """
     echo "Installing Python dependencies..."
-    def cuda_short_ver = args.cuda_target.replaceAll('_', '')
+    def env_name = 'win64_' + UUID.randomUUID().toString().replaceAll('-', '')
+    bat "conda env create -n ${env_name} --file=tests/ci_build/win64_conda_env.yml"
+    echo "Installing Python wheel..."
     bat """
-     conda activate && conda install -y hypothesis && conda upgrade scikit-learn pandas numpy hypothesis  && python -m pip install cupy-${cuda_short_ver}
+    conda activate ${env_name} && for /R %%i in (python-package\\dist\\*.whl) DO python -m pip install "%%i"
     """
     echo "Running Python tests..."
+    bat "conda activate ${env_name} && python -m pytest -v -s -rxXs --fulltrace tests\\python"
     bat """
-    conda activate && python -m pytest -v -s --fulltrace -m "(not slow) and (not mgpu)" tests\\python-gpu
+    conda activate ${env_name} && python -m pytest -v -s -rxXs --fulltrace -m "(not slow) and (not mgpu)" tests\\python-gpu
     """
-    bat "conda activate && python -m pip uninstall -y xgboost"
+    bat "conda env remove --name ${env_name}"
     deleteDir()
   }
 }

tests/ci_build/deploy_jvm_packages.sh

@@ -20,16 +20,5 @@ cd jvm-packages
 # Deploy to S3 bucket xgboost-maven-repo
 mvn --no-transfer-progress package deploy -P release-to-s3 -Dspark.version=${spark_version} -DskipTests
 
-# Compile XGBoost4J with Scala 2.11 too
-mvn clean
-# Rename artifactId of all XGBoost4J packages with suffix _2.11
-sed -i -e 's/<artifactId>xgboost\(.*\)_[0-9\.]\+/<artifactId>xgboost\1_2.11/' $(find . -name pom.xml)
-# Modify scala.version and scala.binary.version fields
-sed -i -e 's/<scala\.version>[0-9\.]\+/<scala.version>2.11.12/' $(find . -name pom.xml)
-sed -i -e 's/<scala\.binary\.version>[0-9\.]\+/<scala.binary.version>2.11/' $(find . -name pom.xml)
-
-# Re-build and deploy
-mvn --no-transfer-progress package deploy -P release-to-s3 -Dspark.version=${spark_version} -DskipTests
-
 set +x
 set +e

tests/ci_build/win64_conda_env.yml

@@ -0,0 +1,18 @@
+name: win64_env
+channels:
+- conda-forge
+dependencies:
+- python=3.7
+- numpy
+- scipy
+- matplotlib
+- scikit-learn
+- pandas
+- pytest
+- python-graphviz
+- boto3
+- hypothesis
+- jsonschema
+- pip
+- pip:
+  - cupy-cuda101

tests/python-gpu/test_gpu_demos.py

@@ -1,10 +1,13 @@
 import os
 import subprocess
 import sys
+import pytest
 sys.path.append("tests/python")
+import testing as tm
 import test_demos as td         # noqa
 
 
+@pytest.mark.skipif(**tm.no_cupy())
 def test_data_iterator():
     script = os.path.join(td.PYTHON_DEMO_DIR, 'data_iterator.py')
     cmd = ['python', script]

tests/python/test_plotting.py

@@ -15,7 +15,7 @@
     pass
 
 
-pytestmark = pytest.mark.skipif(**tm.no_matplotlib())
+pytestmark = pytest.mark.skipif(**tm.no_multiple(tm.no_matplotlib(), tm.no_graphviz()))
 
 
 dpath = 'demo/data/'

tests/python/test_with_sklearn.py

@@ -437,6 +437,7 @@ def test_sklearn_api_gblinear():
 
 
 @pytest.mark.skipif(**tm.no_matplotlib())
+@pytest.mark.skipif(**tm.no_graphviz())
 def test_sklearn_plotting():
     from sklearn.datasets import load_iris
 

tests/python/testing.py

@@ -98,6 +98,26 @@ def no_json_schema():
         return {'condition': True, 'reason': reason}
 
 
+def no_graphviz():
+    reason = 'graphviz is not installed'
+    try:
+        import graphviz  # noqa
+        return {'condition': False, 'reason': reason}
+    except ImportError:
+        return {'condition': True, 'reason': reason}
+
+
+def no_multiple(*args):
+    condition = False
+    reason = ''
+    for arg in args:
+        condition = (condition or arg['condition'])
+        if arg['condition']:
+            reason = arg['reason']
+            break
+    return {'condition': condition, 'reason': reason}
+
+
 # Contains a dataset in numpy format as well as the relevant objective and metric
 class TestDataset:
     def __init__(self, name, get_dataset, objective, metric