xgboost/tests/cpp/helpers.cc
Thejaswi 85b2fb3eee [GPU-Plugin] Integration of a faster version of grow_gpu plugin into mainstream (#2360)
* Integrating a faster version of grow_gpu plugin
1. Removed the older files to reduce duplication
2. Moved all of the grow_gpu files under 'exact' folder
3. All of them are inside 'exact' namespace to avoid any conflicts
4. Fixed a bug in benchmark.py while running only 'grow_gpu' plugin
5. Added cub and googletest submodules to ease integration and unit-testing
6. Updates to CMakeLists.txt to directly build cuda objects into libxgboost

* Added support for building gpu plugins through make flow
1. updated makefile and config.mk to add right targets
2. added unit-tests for gpu exact plugin code

* 1. Added support for building gpu plugin using 'make' flow as well
2. Updated instructions for building and testing gpu plugin

* Fix travis-ci errors for PR#2360
1. lint errors on unit-tests
2. removed googletest, instead depended upon dmlc-core provide gtest cache

* Some more fixes to travis-ci lint failures PR#2360

* Added Rory's copyrights to the files containing code from both.

* updated copyright statement as per Rory's request

* moved the static datasets into a script to generate them at runtime

* 1. memory usage print when silent=0
2. tests/ and test/ folder organization
3. removal of the dependency of googletest for just building xgboost
4. coding style updates for .cuh as well

* Fixes for compilation warnings

* add cuda object files as well when JVM_BINDINGS=ON
2017-06-06 09:39:53 +12:00

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#include "./helpers.h"
std::string TempFileName() {
return std::tmpnam(nullptr);
}
bool FileExists(const std::string name) {
struct stat st;
return stat(name.c_str(), &st) == 0;
}
long GetFileSize(const std::string filename) {
struct stat st;
stat(filename.c_str(), &st);
return st.st_size;
}
std::string CreateSimpleTestData() {
std::string tmp_file = TempFileName();
std::ofstream fo;
fo.open(tmp_file);
fo << "0 0:0 1:10 2:20\n";
fo << "1 0:0 3:30 4:40\n";
fo.close();
return tmp_file;
}
void CheckObjFunction(xgboost::ObjFunction * obj,
std::vector<xgboost::bst_float> preds,
std::vector<xgboost::bst_float> labels,
std::vector<xgboost::bst_float> weights,
std::vector<xgboost::bst_float> out_grad,
std::vector<xgboost::bst_float> out_hess) {
xgboost::MetaInfo info;
info.num_row = labels.size();
info.labels = labels;
info.weights = weights;
std::vector<xgboost::bst_gpair> gpair;
obj->GetGradient(preds, info, 1, &gpair);
ASSERT_EQ(gpair.size(), preds.size());
for (int i = 0; i < static_cast<int>(gpair.size()); ++i) {
EXPECT_NEAR(gpair[i].grad, out_grad[i], 0.01)
<< "Unexpected grad for pred=" << preds[i] << " label=" << labels[i]
<< " weight=" << weights[i];
EXPECT_NEAR(gpair[i].hess, out_hess[i], 0.01)
<< "Unexpected hess for pred=" << preds[i] << " label=" << labels[i]
<< " weight=" << weights[i];
}
}
xgboost::bst_float GetMetricEval(xgboost::Metric * metric,
std::vector<xgboost::bst_float> preds,
std::vector<xgboost::bst_float> labels,
std::vector<xgboost::bst_float> weights) {
xgboost::MetaInfo info;
info.num_row = labels.size();
info.labels = labels;
info.weights = weights;
return metric->Eval(preds, info, false);
}