cc6a5a3666
* Added finding quantiles on GPU.
- this includes datasets where weights are assigned to data rows
- as the quantiles found by the new algorithm are not the same
as those found by the old one, test thresholds in
tests/python-gpu/test_gpu_updaters.py have been adjusted.
* Adjustments and improved testing for finding quantiles on the GPU.
- added C++ tests for the DeviceSketch() function
- reduced one of the thresholds in test_gpu_updaters.py
- adjusted the cuts found by the find_cuts_k kernel
41 lines
1.7 KiB
Python
41 lines
1.7 KiB
Python
import numpy as np
|
|
import sys
|
|
import unittest
|
|
|
|
sys.path.append("tests/python")
|
|
import xgboost as xgb
|
|
from regression_test_utilities import run_suite, parameter_combinations, \
|
|
assert_results_non_increasing
|
|
|
|
|
|
def assert_gpu_results(cpu_results, gpu_results):
|
|
for cpu_res, gpu_res in zip(cpu_results, gpu_results):
|
|
# Check final eval result roughly equivalent
|
|
assert np.allclose(cpu_res["eval"][-1], gpu_res["eval"][-1], 1e-2, 1e-2)
|
|
|
|
datasets = ["Boston", "Cancer", "Digits", "Sparse regression",
|
|
"Sparse regression with weights"]
|
|
|
|
class TestGPU(unittest.TestCase):
|
|
def test_gpu_exact(self):
|
|
variable_param = {'max_depth': [2, 6, 15], }
|
|
for param in parameter_combinations(variable_param):
|
|
param['tree_method'] = 'gpu_exact'
|
|
gpu_results = run_suite(param, select_datasets=datasets)
|
|
assert_results_non_increasing(gpu_results, 1e-2)
|
|
param['tree_method'] = 'exact'
|
|
cpu_results = run_suite(param, select_datasets=datasets)
|
|
assert_gpu_results(cpu_results, gpu_results)
|
|
|
|
def test_gpu_hist(self):
|
|
variable_param = {'n_gpus': [-1], 'max_depth': [2, 10], 'max_leaves': [255, 4],
|
|
'max_bin': [2, 256],
|
|
'grow_policy': ['lossguide']}
|
|
for param in parameter_combinations(variable_param):
|
|
param['tree_method'] = 'gpu_hist'
|
|
gpu_results = run_suite(param, select_datasets=datasets)
|
|
assert_results_non_increasing(gpu_results, 1e-2)
|
|
param['tree_method'] = 'hist'
|
|
cpu_results = run_suite(param, select_datasets=datasets)
|
|
assert_gpu_results(cpu_results, gpu_results)
|