Fix test_gpu_coordinate. (#3974)

* Fix test_gpu_coordinate.

* Use `gpu_coord_descent` in test.
* Reduce number of running rounds.

* Remove nthread.

* Use githubusercontent for r-appveyor.

* Use githubusercontent in travis r tests.

appveyor.yml

@@ -49,7 +49,7 @@ install:
     - ps: |
         if($env:target -eq 'rmingw' -or $env:target -eq 'rmsvc') {
           #$ErrorActionPreference = "Stop"
-          Invoke-WebRequest http://raw.github.com/krlmlr/r-appveyor/master/scripts/appveyor-tool.ps1 -OutFile "$Env:TEMP\appveyor-tool.ps1"
+          Invoke-WebRequest https://raw.githubusercontent.com/krlmlr/r-appveyor/master/scripts/appveyor-tool.ps1 -OutFile "$Env:TEMP\appveyor-tool.ps1"
           Import-Module "$Env:TEMP\appveyor-tool.ps1"
           Bootstrap
           $DEPS = "c('data.table','magrittr','stringi','ggplot2','DiagrammeR','Ckmeans.1d.dp','vcd','testthat','lintr','knitr','rmarkdown')"

tests/python-gpu/test_gpu_linear.py

@@ -3,31 +3,41 @@ import pytest
 import unittest
 
 sys.path.append('tests/python/')
-import test_linear
-import testing as tm
+import test_linear              # noqa: E402
+import testing as tm            # noqa: E402
 
 
 class TestGPULinear(unittest.TestCase):
 
-    datasets = ["Boston", "Digits", "Cancer", "Sparse regression",
-                "Boston External Memory"]
+    datasets = ["Boston", "Digits", "Cancer", "Sparse regression"]
+    common_param = {
+        'booster': ['gblinear'],
+        'updater': ['gpu_coord_descent'],
+        'eta': [0.5],
+        'top_k': [10],
+        'tolerance': [1e-5],
+        'alpha': [.005, .1],
+        'lambda': [0.005],
+        'coordinate_selection': ['cyclic', 'random', 'greedy']}
 
     @pytest.mark.skipif(**tm.no_sklearn())
     def test_gpu_coordinate(self):
-        variable_param = {
-            'booster': ['gblinear'],
-            'updater': ['coord_descent'],
-            'eta': [0.5],
-            'top_k': [10],
-            'tolerance': [1e-5],
-            'nthread': [2],
-            'alpha': [.005, .1],
-            'lambda': [0.005],
-            'coordinate_selection': ['cyclic', 'random', 'greedy'],
-            'n_gpus': [-1]
-        }
-        for param in test_linear.parameter_combinations(variable_param):
+        parameters = self.common_param.copy()
+        parameters['n_gpus'] = [1]
+        for param in test_linear.parameter_combinations(parameters):
             results = test_linear.run_suite(
-                param, 200, self.datasets, scale_features=True)
+                param, 150, self.datasets, scale_features=True)
+            test_linear.assert_regression_result(results, 1e-2)
+            test_linear.assert_classification_result(results)
+
+    @pytest.mark.mgpu
+    @pytest.mark.skipif(**tm.no_sklearn())
+    def test_gpu_coordinate_mgpu(self):
+        parameters = self.common_param.copy()
+        parameters['n_gpus'] = [-1]
+        parameters['gpu_id'] = [1]
+        for param in test_linear.parameter_combinations(parameters):
+            results = test_linear.run_suite(
+                param, 150, self.datasets, scale_features=True)
             test_linear.assert_regression_result(results, 1e-2)
             test_linear.assert_classification_result(results)

tests/python/test_linear.py

@@ -72,7 +72,7 @@ class TestLinear(unittest.TestCase):
                           'feature_selector': ['cyclic', 'shuffle',
                                                'greedy', 'thrifty']}
         for param in parameter_combinations(variable_param):
-            results = run_suite(param, 200, self.datasets, scale_features=True)
+            results = run_suite(param, 150, self.datasets, scale_features=True)
             assert_regression_result(results, 1e-2)
             assert_classification_result(results)
 

tests/travis/run_test.sh

@@ -94,7 +94,7 @@ if [ ${TASK} == "r_test" ]; then
         sudo ln -s /usr/local/lib/gcc/7 /usr/local/gfortran/lib/gcc/x86_64-apple-darwin15/6.1.0
     fi
 
-    curl -OL http://raw.github.com/craigcitro/r-travis/master/scripts/travis-tool.sh
+    curl -OL https://raw.githubusercontent.com/craigcitro/r-travis/master/scripts/travis-tool.sh
     chmod 755 ./travis-tool.sh
     ./travis-tool.sh bootstrap
     make Rpack