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Use generic dispatching routine for array interface. (#6672)

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This commit is contained in:
Jiaming Yuan
2021-02-05 09:23:38 +08:00
committed by GitHub
parent a4101de678
commit 1e949110da
4 changed files with 65 additions and 31 deletions
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24
tests/cpp/helpers.h
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@@ -22,6 +22,7 @@
#include "../../src/common/common.h"
#include "../../src/gbm/gbtree_model.h"
#include "../../src/data/array_interface.h"
#if defined(__CUDACC__)
#define DeclareUnifiedTest(name) GPU ## name
@@ -181,6 +182,29 @@ class SimpleRealUniformDistribution {
}
};
template <typename T>
Json GetArrayInterface(HostDeviceVector<T> *storage, size_t rows, size_t cols) {
Json array_interface{Object()};
array_interface["data"] = std::vector<Json>(2);
if (storage->DeviceCanRead()) {
array_interface["data"][0] =
Integer(reinterpret_cast<int64_t>(storage->ConstDevicePointer()));
} else {
array_interface["data"][0] =
Integer(reinterpret_cast<int64_t>(storage->ConstHostPointer()));
}
array_interface["data"][1] = Boolean(false);
array_interface["shape"] = std::vector<Json>(2);
array_interface["shape"][0] = rows;
array_interface["shape"][1] = cols;
char t = ArrayInterfaceHandler::TypeChar<T>();
array_interface["typestr"] = String(std::string{"<"} + t + std::to_string(sizeof(T)));
array_interface["version"] = 1;
return array_interface;
}
// Generate in-memory random data without using DMatrix.
class RandomDataGenerator {
bst_row_t rows_;