Merge generic device helper functions into gpu set. (#3626)
* Remove the use of old NDevices* functions. * Use GPUSet in timer.h.
This commit is contained in:
trivialfis
Rory Mitchell
parent
3261002099
commit
60787ecebc
@ -6,6 +6,8 @@
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#ifndef XGBOOST_COMMON_COMMON_H_
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#define XGBOOST_COMMON_COMMON_H_
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#include <xgboost/base.h>
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#include <vector>
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#include <string>
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#include <sstream>
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@ -35,6 +37,71 @@ inline std::string ToString(const T& data) {
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return os.str();
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}
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/*
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* Range iterator
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*/
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class Range {
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public:
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class Iterator {
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friend class Range;
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public:
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using DifferenceType = int64_t;
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XGBOOST_DEVICE int64_t operator*() const { return i_; }
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XGBOOST_DEVICE const Iterator &operator++() {
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i_ += step_;
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return *this;
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}
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XGBOOST_DEVICE Iterator operator++(int) {
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Iterator res {*this};
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i_ += step_;
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return res;
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}
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XGBOOST_DEVICE bool operator==(const Iterator &other) const {
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return i_ >= other.i_;
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}
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XGBOOST_DEVICE bool operator!=(const Iterator &other) const {
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return i_ < other.i_;
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}
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XGBOOST_DEVICE void Step(DifferenceType s) { step_ = s; }
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protected:
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XGBOOST_DEVICE explicit Iterator(int64_t start) : i_(start) {}
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XGBOOST_DEVICE explicit Iterator(int64_t start, int step) :
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i_{start}, step_{step} {}
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public:
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int64_t i_;
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DifferenceType step_ = 1;
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};
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XGBOOST_DEVICE Iterator begin() const { return begin_; } // NOLINT
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XGBOOST_DEVICE Iterator end() const { return end_; } // NOLINT
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XGBOOST_DEVICE Range(int64_t begin, int64_t end)
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: begin_(begin), end_(end) {}
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XGBOOST_DEVICE Range(int64_t begin, int64_t end, Iterator::DifferenceType step)
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: begin_(begin, step), end_(end) {}
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XGBOOST_DEVICE bool operator==(const Range& other) const {
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return *begin_ == *other.begin_ && *end_ == *other.end_;
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}
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XGBOOST_DEVICE bool operator!=(const Range& other) const {
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return !(*this == other);
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}
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XGBOOST_DEVICE void Step(Iterator::DifferenceType s) { begin_.Step(s); }
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XGBOOST_DEVICE Iterator::DifferenceType GetStep() const { return begin_.step_; }
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private:
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Iterator begin_;
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Iterator end_;
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};
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} // namespace common
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} // namespace xgboost
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#endif // XGBOOST_COMMON_COMMON_H_
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@ -7,6 +7,10 @@
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#include <thrust/system/cuda/error.h>
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#include <thrust/system_error.h>
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#include <xgboost/logging.h>
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#include "common.h"
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#include "gpu_set.h"
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#include <algorithm>
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#include <chrono>
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#include <ctime>
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@ -28,25 +32,6 @@ namespace dh {
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#define HOST_DEV_INLINE XGBOOST_DEVICE __forceinline__
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#define DEV_INLINE __device__ __forceinline__
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/*
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* Error handling functions
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*/
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#define safe_cuda(ans) ThrowOnCudaError((ans), __FILE__, __LINE__)
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inline cudaError_t ThrowOnCudaError(cudaError_t code, const char *file,
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int line) {
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if (code != cudaSuccess) {
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std::stringstream ss;
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ss << file << "(" << line << ")";
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std::string file_and_line;
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ss >> file_and_line;
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throw thrust::system_error(code, thrust::cuda_category(), file_and_line);
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}
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return code;
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}
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#ifdef XGBOOST_USE_NCCL
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#define safe_nccl(ans) ThrowOnNcclError((ans), __FILE__, __LINE__)
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@ -73,45 +58,20 @@ const T *Raw(const thrust::device_vector<T> &v) { // NOLINT
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return raw_pointer_cast(v.data());
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}
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inline int NVisibleDevices() {
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int n_visgpus = 0;
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dh::safe_cuda(cudaGetDeviceCount(&n_visgpus));
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return n_visgpus;
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}
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inline int NDevicesAll(int n_gpus) {
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int n_devices_visible = dh::NVisibleDevices();
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int n_devices = n_gpus < 0 ? n_devices_visible : n_gpus;
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return (n_devices);
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}
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inline int NDevices(int n_gpus, int num_rows) {
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int n_devices = dh::NDevicesAll(n_gpus);
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// fix-up device number to be limited by number of rows
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n_devices = n_devices > num_rows ? num_rows : n_devices;
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return (n_devices);
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}
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// if n_devices=-1, then use all visible devices
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inline void SynchronizeNDevices(int n_devices, std::vector<int> dList) {
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for (int d_idx = 0; d_idx < n_devices; d_idx++) {
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int device_idx = dList[d_idx];
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safe_cuda(cudaSetDevice(device_idx));
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safe_cuda(cudaDeviceSynchronize());
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}
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}
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inline void SynchronizeAll() {
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for (int device_idx = 0; device_idx < NVisibleDevices(); device_idx++) {
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safe_cuda(cudaSetDevice(device_idx));
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inline void SynchronizeNDevices(xgboost::GPUSet devices) {
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devices = devices.IsEmpty() ? xgboost::GPUSet::AllVisible() : devices;
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for (auto const d : devices.Unnormalised()) {
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safe_cuda(cudaSetDevice(d));
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safe_cuda(cudaDeviceSynchronize());
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}
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}
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inline std::string DeviceName(int device_idx) {
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cudaDeviceProp prop;
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dh::safe_cuda(cudaGetDeviceProperties(&prop, device_idx));
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return std::string(prop.name);
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inline void SynchronizeAll() {
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for (int device_idx : xgboost::GPUSet::AllVisible()) {
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safe_cuda(cudaSetDevice(device_idx));
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safe_cuda(cudaDeviceSynchronize());
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}
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}
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inline size_t AvailableMemory(int device_idx) {
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@ -144,15 +104,8 @@ inline size_t MaxSharedMemory(int device_idx) {
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return prop.sharedMemPerBlock;
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}
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// ensure gpu_id is correct, so not dependent upon user knowing details
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inline int GetDeviceIdx(int gpu_id) {
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// protect against overrun for gpu_id
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return (std::abs(gpu_id) + 0) % dh::NVisibleDevices();
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}
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inline void CheckComputeCapability() {
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int n_devices = NVisibleDevices();
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for (int d_idx = 0; d_idx < n_devices; ++d_idx) {
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for (int d_idx : xgboost::GPUSet::AllVisible()) {
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cudaDeviceProp prop;
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safe_cuda(cudaGetDeviceProperties(&prop, d_idx));
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std::ostringstream oss;
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@ -163,7 +116,6 @@ inline void CheckComputeCapability() {
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}
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}
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DEV_INLINE void AtomicOrByte(unsigned int* __restrict__ buffer, size_t ibyte, unsigned char b) {
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atomicOr(&buffer[ibyte / sizeof(unsigned int)], (unsigned int)b << (ibyte % (sizeof(unsigned int)) * 8));
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}
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@ -199,67 +151,18 @@ DEV_INLINE int UpperBound(const float* __restrict__ cuts, int n, float v) {
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return right;
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}
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/*
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* Range iterator
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*/
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class Range {
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public:
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class Iterator {
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friend class Range;
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public:
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XGBOOST_DEVICE int64_t operator*() const { return i_; }
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XGBOOST_DEVICE const Iterator &operator++() {
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i_ += step_;
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return *this;
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}
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XGBOOST_DEVICE Iterator operator++(int) {
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Iterator copy(*this);
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i_ += step_;
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return copy;
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}
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XGBOOST_DEVICE bool operator==(const Iterator &other) const {
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return i_ >= other.i_;
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}
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XGBOOST_DEVICE bool operator!=(const Iterator &other) const {
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return i_ < other.i_;
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}
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XGBOOST_DEVICE void Step(int s) { step_ = s; }
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protected:
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XGBOOST_DEVICE explicit Iterator(int64_t start) : i_(start) {}
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public:
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uint64_t i_;
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int step_ = 1;
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};
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XGBOOST_DEVICE Iterator begin() const { return begin_; } // NOLINT
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XGBOOST_DEVICE Iterator end() const { return end_; } // NOLINT
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XGBOOST_DEVICE Range(int64_t begin, int64_t end)
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: begin_(begin), end_(end) {}
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XGBOOST_DEVICE void Step(int s) { begin_.Step(s); }
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private:
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Iterator begin_;
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Iterator end_;
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};
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template <typename T>
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__device__ Range GridStrideRange(T begin, T end) {
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__device__ xgboost::common::Range GridStrideRange(T begin, T end) {
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begin += blockDim.x * blockIdx.x + threadIdx.x;
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Range r(begin, end);
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xgboost::common::Range r(begin, end);
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r.Step(gridDim.x * blockDim.x);
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return r;
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}
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template <typename T>
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__device__ Range BlockStrideRange(T begin, T end) {
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__device__ xgboost::common::Range BlockStrideRange(T begin, T end) {
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begin += threadIdx.x;
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Range r(begin, end);
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xgboost::common::Range r(begin, end);
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r.Step(blockDim.x);
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return r;
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}
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122
src/common/gpu_set.h
Normal file
122
src/common/gpu_set.h
Normal file
@ -0,0 +1,122 @@
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/*!
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* Copyright 2018 XGBoost contributors
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*/
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#ifndef XGBOOST_COMMON_GPU_SET_H_
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#define XGBOOST_COMMON_GPU_SET_H_
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#include <xgboost/base.h>
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#include <xgboost/logging.h>
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#include <limits>
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#include <string>
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#include "common.h"
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#include "span.h"
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#if defined(__CUDACC__)
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#include <thrust/system/cuda/error.h>
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#include <thrust/system_error.h>
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#endif
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namespace dh {
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#if defined(__CUDACC__)
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/*
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* Error handling functions
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*/
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#define safe_cuda(ans) ThrowOnCudaError((ans), __FILE__, __LINE__)
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inline cudaError_t ThrowOnCudaError(cudaError_t code, const char *file,
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int line) {
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if (code != cudaSuccess) {
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throw thrust::system_error(code, thrust::cuda_category(),
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std::string{file} + "(" + // NOLINT
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std::to_string(line) + ")");
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}
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return code;
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}
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#endif
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} // namespace dh
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namespace xgboost {
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/* \brief set of devices across which HostDeviceVector can be distributed.
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*
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* Currently implemented as a range, but can be changed later to something else,
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* e.g. a bitset
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*/
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class GPUSet {
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public:
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explicit GPUSet(int start = 0, int ndevices = 0)
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: devices_(start, start + ndevices) {}
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static GPUSet Empty() { return GPUSet(); }
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static GPUSet Range(int start, int ndevices) {
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return ndevices <= 0 ? Empty() : GPUSet{start, ndevices};
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}
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/* \brief ndevices and num_rows both are upper bounds. */
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static GPUSet All(int ndevices, int num_rows = std::numeric_limits<int>::max()) {
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int n_devices_visible = AllVisible().Size();
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ndevices = ndevices < 0 ? n_devices_visible : ndevices;
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// fix-up device number to be limited by number of rows
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ndevices = ndevices > num_rows ? num_rows : ndevices;
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return Range(0, ndevices);
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}
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static GPUSet AllVisible() {
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int n_visgpus = 0;
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#if defined(__CUDACC__)
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dh::safe_cuda(cudaGetDeviceCount(&n_visgpus));
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#endif
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return Range(0, n_visgpus);
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}
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/* \brief Ensure gpu_id is correct, so not dependent upon user knowing details */
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static int GetDeviceIdx(int gpu_id) {
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return (std::abs(gpu_id) + 0) % AllVisible().Size();
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}
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/* \brief Counting from gpu_id */
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GPUSet Normalised(int gpu_id) const {
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return Range(gpu_id, *devices_.end() + gpu_id);
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}
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/* \brief Counting from 0 */
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GPUSet Unnormalised() const {
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return Range(0, *devices_.end() - *devices_.begin());
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}
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int Size() const {
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int res = *devices_.end() - *devices_.begin();
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return res < 0 ? 0 : res;
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}
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int operator[](int index) const {
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CHECK(index >= 0 && index < *(devices_.end()));
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return *devices_.begin() + index;
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}
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bool IsEmpty() const { return Size() == 0; } // NOLINT
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int Index(int device) const {
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CHECK(Contains(device));
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return device - *devices_.begin();
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}
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bool Contains(int device) const {
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return *devices_.begin() <= device && device < *devices_.end();
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}
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common::Range::Iterator begin() const { return devices_.begin(); } // NOLINT
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common::Range::Iterator end() const { return devices_.end(); } // NOLINT
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friend bool operator==(const GPUSet& lhs, const GPUSet& rhs) {
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return lhs.devices_ == rhs.devices_;
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}
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friend bool operator!=(const GPUSet& lhs, const GPUSet& rhs) {
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return !(lhs == rhs);
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}
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private:
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common::Range devices_;
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};
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} // namespace xgboost
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#endif // XGBOOST_COMMON_GPU_SET_H_
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@ -271,7 +271,7 @@ struct GPUSketcher {
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find_cuts_k<<<dh::DivRoundUp(n_cuts_cur_[icol], block), block>>>
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(cuts_d_.data().get() + icol * n_cuts_, fvalues_cur_.data().get(),
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weights2_.data().get(), n_unique, n_cuts_cur_[icol]);
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dh::safe_cuda(cudaGetLastError());
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dh::safe_cuda(cudaGetLastError()); // NOLINT
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}
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}
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@ -311,14 +311,14 @@ struct GPUSketcher {
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has_weights_ ? weights_.data().get() : nullptr, entries_.data().get(),
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gpu_batch_nrows_, num_cols_,
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row_batch.offset[row_begin_ + batch_row_begin], batch_nrows);
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dh::safe_cuda(cudaGetLastError());
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dh::safe_cuda(cudaDeviceSynchronize());
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dh::safe_cuda(cudaGetLastError()); // NOLINT
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dh::safe_cuda(cudaDeviceSynchronize()); // NOLINT
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for (int icol = 0; icol < num_cols_; ++icol) {
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FindColumnCuts(batch_nrows, icol);
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}
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dh::safe_cuda(cudaDeviceSynchronize());
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dh::safe_cuda(cudaDeviceSynchronize()); // NOLINT
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// add cuts into sketches
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thrust::copy(cuts_d_.begin(), cuts_d_.end(), cuts_h_.begin());
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@ -379,7 +379,7 @@ struct GPUSketcher {
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}
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GPUSketcher(tree::TrainParam param, size_t n_rows) : param_(std::move(param)) {
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devices_ = GPUSet::Range(param_.gpu_id, dh::NDevices(param_.n_gpus, n_rows));
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devices_ = GPUSet::All(param_.n_gpus, n_rows).Normalised(param_.gpu_id);
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}
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std::vector<std::unique_ptr<DeviceShard>> shards_;
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@ -11,6 +11,7 @@
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#include <initializer_list>
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#include <vector>
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#include "gpu_set.h"
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#include "span.h"
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// only include thrust-related files if host_device_vector.h
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@ -23,40 +24,6 @@ namespace xgboost {
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template <typename T> struct HostDeviceVectorImpl;
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// set of devices across which HostDeviceVector can be distributed;
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// currently implemented as a range, but can be changed later to something else,
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// e.g. a bitset
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class GPUSet {
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public:
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explicit GPUSet(int start = 0, int ndevices = 0)
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: start_(start), ndevices_(ndevices) {}
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static GPUSet Empty() { return GPUSet(); }
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static GPUSet Range(int start, int ndevices) { return GPUSet(start, ndevices); }
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int Size() const { return ndevices_; }
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int operator[](int index) const {
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CHECK(index >= 0 && index < ndevices_);
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return start_ + index;
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}
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bool IsEmpty() const { return ndevices_ <= 0; }
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int Index(int device) const {
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CHECK(device >= start_ && device < start_ + ndevices_);
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return device - start_;
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}
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bool Contains(int device) const {
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return start_ <= device && device < start_ + ndevices_;
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}
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friend bool operator==(GPUSet a, GPUSet b) {
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return a.start_ == b.start_ && a.ndevices_ == b.ndevices_;
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}
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friend bool operator!=(GPUSet a, GPUSet b) {
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return a.start_ != b.start_ || a.ndevices_ != b.ndevices_;
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}
|
||||
|
||||
private:
|
||||
int start_, ndevices_;
|
||||
};
|
||||
|
||||
|
||||
/**
|
||||
* @file host_device_vector.h
|
||||
* @brief A device-and-host vector abstraction layer.
|
||||
|
||||
@ -7,7 +7,8 @@
|
||||
#include <iostream>
|
||||
#include <map>
|
||||
#include <string>
|
||||
#include <vector>
|
||||
|
||||
#include "gpu_set.h"
|
||||
|
||||
namespace xgboost {
|
||||
namespace common {
|
||||
@ -66,21 +67,21 @@ struct Monitor {
|
||||
this->label = label;
|
||||
}
|
||||
void Start(const std::string &name) { timer_map[name].Start(); }
|
||||
void Start(const std::string &name, std::vector<int> dList) {
|
||||
void Start(const std::string &name, GPUSet devices) {
|
||||
if (debug_verbose) {
|
||||
#ifdef __CUDACC__
|
||||
#include "device_helpers.cuh"
|
||||
dh::SynchronizeNDevices(dList.size(), dList);
|
||||
dh::SynchronizeNDevices(devices);
|
||||
#endif
|
||||
}
|
||||
timer_map[name].Start();
|
||||
}
|
||||
void Stop(const std::string &name) { timer_map[name].Stop(); }
|
||||
void Stop(const std::string &name, std::vector<int> dList) {
|
||||
void Stop(const std::string &name, GPUSet devices) {
|
||||
if (debug_verbose) {
|
||||
#ifdef __CUDACC__
|
||||
#include "device_helpers.cuh"
|
||||
dh::SynchronizeNDevices(dList.size(), dList);
|
||||
dh::SynchronizeNDevices(devices);
|
||||
#endif
|
||||
}
|
||||
timer_map[name].Stop();
|
||||
|
||||
@ -6,6 +6,7 @@
|
||||
#include <thrust/execution_policy.h>
|
||||
#include <thrust/inner_product.h>
|
||||
#include <xgboost/linear_updater.h>
|
||||
#include "../common/gpu_set.h"
|
||||
#include "../common/device_helpers.cuh"
|
||||
#include "../common/timer.h"
|
||||
#include "coordinate_common.h"
|
||||
@ -214,14 +215,14 @@ class GPUCoordinateUpdater : public LinearUpdater {
|
||||
void LazyInitShards(DMatrix *p_fmat,
|
||||
const gbm::GBLinearModelParam &model_param) {
|
||||
if (!shards.empty()) return;
|
||||
int n_devices = dh::NDevices(param.n_gpus, p_fmat->Info().num_row_);
|
||||
int n_devices = GPUSet::All(param.n_gpus, p_fmat->Info().num_row_).Size();
|
||||
bst_uint row_begin = 0;
|
||||
bst_uint shard_size =
|
||||
std::ceil(static_cast<double>(p_fmat->Info().num_row_) / n_devices);
|
||||
|
||||
device_list.resize(n_devices);
|
||||
for (int d_idx = 0; d_idx < n_devices; ++d_idx) {
|
||||
int device_idx = (param.gpu_id + d_idx) % dh::NVisibleDevices();
|
||||
int device_idx = GPUSet::GetDeviceIdx(param.gpu_id + d_idx);
|
||||
device_list[d_idx] = device_idx;
|
||||
}
|
||||
// Partition input matrix into row segments
|
||||
|
||||
@ -102,8 +102,8 @@ class GPURegLossObj : public ObjFunction {
|
||||
|
||||
void Configure(const std::vector<std::pair<std::string, std::string> >& args) override {
|
||||
param_.InitAllowUnknown(args);
|
||||
CHECK(param_.n_gpus != 0) << "Must have at least one device";
|
||||
devices_ = GPUSet::Range(param_.gpu_id, dh::NDevicesAll(param_.n_gpus));
|
||||
// CHECK(param_.n_gpus != 0) << "Must have at least one device";
|
||||
devices_ = GPUSet::All(param_.n_gpus).Normalised(param_.gpu_id);
|
||||
}
|
||||
|
||||
void GetGradient(HostDeviceVector<float>* preds,
|
||||
|
||||
@ -11,6 +11,7 @@
|
||||
#include <xgboost/tree_model.h>
|
||||
#include <xgboost/tree_updater.h>
|
||||
#include <memory>
|
||||
#include "../common/gpu_set.h"
|
||||
#include "../common/device_helpers.cuh"
|
||||
#include "../common/host_device_vector.h"
|
||||
|
||||
@ -464,7 +465,7 @@ class GPUPredictor : public xgboost::Predictor {
|
||||
Predictor::Init(cfg, cache);
|
||||
cpu_predictor->Init(cfg, cache);
|
||||
param.InitAllowUnknown(cfg);
|
||||
devices = GPUSet::Range(param.gpu_id, dh::NDevicesAll(param.n_gpus));
|
||||
devices = GPUSet::All(param.n_gpus).Normalised(param.gpu_id);
|
||||
max_shared_memory_bytes = dh::MaxSharedMemory(param.gpu_id);
|
||||
}
|
||||
|
||||
|
||||
@ -4,6 +4,7 @@
|
||||
#include <xgboost/tree_updater.h>
|
||||
#include <utility>
|
||||
#include <vector>
|
||||
#include "../common/gpu_set.h"
|
||||
#include "param.h"
|
||||
#include "updater_gpu_common.cuh"
|
||||
|
||||
@ -375,7 +376,7 @@ void argMaxByKey(ExactSplitCandidate* nodeSplits, const GradientPair* gradScans,
|
||||
NodeIdT nodeStart, int len, const TrainParam param,
|
||||
ArgMaxByKeyAlgo algo) {
|
||||
dh::FillConst<ExactSplitCandidate, BLKDIM, ITEMS_PER_THREAD>(
|
||||
dh::GetDeviceIdx(param.gpu_id), nodeSplits, nUniqKeys,
|
||||
GPUSet::GetDeviceIdx(param.gpu_id), nodeSplits, nUniqKeys,
|
||||
ExactSplitCandidate());
|
||||
int nBlks = dh::DivRoundUp(len, ITEMS_PER_THREAD * BLKDIM);
|
||||
switch (algo) {
|
||||
@ -498,7 +499,7 @@ class GPUMaker : public TreeUpdater {
|
||||
|
||||
// devices are only used for resharding the HostDeviceVector passed as a parameter;
|
||||
// the algorithm works with a single GPU only
|
||||
GPUSet devices;
|
||||
GPUSet devices_;
|
||||
|
||||
dh::CubMemory tmp_mem;
|
||||
dh::DVec<GradientPair> tmpScanGradBuff;
|
||||
@ -516,7 +517,7 @@ class GPUMaker : public TreeUpdater {
|
||||
maxNodes = (1 << (param.max_depth + 1)) - 1;
|
||||
maxLeaves = 1 << param.max_depth;
|
||||
|
||||
devices = GPUSet::Range(param.gpu_id, dh::NDevicesAll(param.n_gpus));
|
||||
devices_ = GPUSet::All(param.n_gpus).Normalised(param.gpu_id);
|
||||
}
|
||||
|
||||
void Update(HostDeviceVector<GradientPair>* gpair, DMatrix* dmat,
|
||||
@ -526,7 +527,7 @@ class GPUMaker : public TreeUpdater {
|
||||
float lr = param.learning_rate;
|
||||
param.learning_rate = lr / trees.size();
|
||||
|
||||
gpair->Reshard(devices);
|
||||
gpair->Reshard(devices_);
|
||||
|
||||
try {
|
||||
// build tree
|
||||
@ -624,7 +625,7 @@ class GPUMaker : public TreeUpdater {
|
||||
|
||||
void allocateAllData(int offsetSize) {
|
||||
int tmpBuffSize = ScanTempBufferSize(nVals);
|
||||
ba.Allocate(dh::GetDeviceIdx(param.gpu_id), param.silent, &vals, nVals,
|
||||
ba.Allocate(GPUSet::GetDeviceIdx(param.gpu_id), param.silent, &vals, nVals,
|
||||
&vals_cached, nVals, &instIds, nVals, &instIds_cached, nVals,
|
||||
&colOffsets, offsetSize, &gradsInst, nRows, &nodeAssigns, nVals,
|
||||
&nodeLocations, nVals, &nodes, maxNodes, &nodeAssignsPerInst,
|
||||
@ -634,7 +635,7 @@ class GPUMaker : public TreeUpdater {
|
||||
}
|
||||
|
||||
void setupOneTimeData(DMatrix* dmat) {
|
||||
size_t free_memory = dh::AvailableMemory(dh::GetDeviceIdx(param.gpu_id));
|
||||
size_t free_memory = dh::AvailableMemory(GPUSet::GetDeviceIdx(param.gpu_id));
|
||||
if (!dmat->SingleColBlock()) {
|
||||
throw std::runtime_error("exact::GPUBuilder - must have 1 column block");
|
||||
}
|
||||
@ -730,7 +731,7 @@ class GPUMaker : public TreeUpdater {
|
||||
nodeAssigns.Current(), instIds.Current(), nodes.Data(),
|
||||
colOffsets.Data(), vals.Current(), nVals, nCols);
|
||||
// gather the node assignments across all other columns too
|
||||
dh::Gather(dh::GetDeviceIdx(param.gpu_id), nodeAssigns.Current(),
|
||||
dh::Gather(GPUSet::GetDeviceIdx(param.gpu_id), nodeAssigns.Current(),
|
||||
nodeAssignsPerInst.Data(), instIds.Current(), nVals);
|
||||
sortKeys(level);
|
||||
}
|
||||
@ -741,7 +742,7 @@ class GPUMaker : public TreeUpdater {
|
||||
// but we don't need more than level+1 bits for sorting!
|
||||
SegmentedSort(&tmp_mem, &nodeAssigns, &nodeLocations, nVals, nCols,
|
||||
colOffsets, 0, level + 1);
|
||||
dh::Gather<float, int>(dh::GetDeviceIdx(param.gpu_id), vals.other(),
|
||||
dh::Gather<float, int>(GPUSet::GetDeviceIdx(param.gpu_id), vals.other(),
|
||||
vals.Current(), instIds.other(), instIds.Current(),
|
||||
nodeLocations.Current(), nVals);
|
||||
vals.buff().selector ^= 1;
|
||||
|
||||
@ -728,7 +728,7 @@ class GPUHistMaker : public TreeUpdater {
|
||||
param_.InitAllowUnknown(args);
|
||||
CHECK(param_.n_gpus != 0) << "Must have at least one device";
|
||||
n_devices_ = param_.n_gpus;
|
||||
devices_ = GPUSet::Range(param_.gpu_id, dh::NDevicesAll(param_.n_gpus));
|
||||
devices_ = GPUSet::All(param_.n_gpus).Normalised(param_.gpu_id);
|
||||
|
||||
dh::CheckComputeCapability();
|
||||
|
||||
@ -743,7 +743,7 @@ class GPUHistMaker : public TreeUpdater {
|
||||
|
||||
void Update(HostDeviceVector<GradientPair>* gpair, DMatrix* dmat,
|
||||
const std::vector<RegTree*>& trees) override {
|
||||
monitor_.Start("Update", device_list_);
|
||||
monitor_.Start("Update", devices_);
|
||||
GradStats::CheckInfo(dmat->Info());
|
||||
// rescale learning rate according to size of trees
|
||||
float lr = param_.learning_rate;
|
||||
@ -759,17 +759,17 @@ class GPUHistMaker : public TreeUpdater {
|
||||
LOG(FATAL) << "Exception in gpu_hist: " << e.what() << std::endl;
|
||||
}
|
||||
param_.learning_rate = lr;
|
||||
monitor_.Stop("Update", device_list_);
|
||||
monitor_.Stop("Update", devices_);
|
||||
}
|
||||
|
||||
void InitDataOnce(DMatrix* dmat) {
|
||||
info_ = &dmat->Info();
|
||||
|
||||
int n_devices = dh::NDevices(param_.n_gpus, info_->num_row_);
|
||||
int n_devices = GPUSet::All(param_.n_gpus, info_->num_row_).Size();
|
||||
|
||||
device_list_.resize(n_devices);
|
||||
for (int d_idx = 0; d_idx < n_devices; ++d_idx) {
|
||||
int device_idx = (param_.gpu_id + d_idx) % dh::NVisibleDevices();
|
||||
int device_idx = GPUSet::GetDeviceIdx(param_.gpu_id + d_idx);
|
||||
device_list_[d_idx] = device_idx;
|
||||
}
|
||||
|
||||
@ -792,16 +792,16 @@ class GPUHistMaker : public TreeUpdater {
|
||||
shard->InitRowPtrs(batch);
|
||||
});
|
||||
|
||||
monitor_.Start("Quantiles", device_list_);
|
||||
monitor_.Start("Quantiles", devices_);
|
||||
common::DeviceSketch(batch, *info_, param_, &hmat_);
|
||||
n_bins_ = hmat_.row_ptr.back();
|
||||
monitor_.Stop("Quantiles", device_list_);
|
||||
monitor_.Stop("Quantiles", devices_);
|
||||
|
||||
monitor_.Start("BinningCompression", device_list_);
|
||||
monitor_.Start("BinningCompression", devices_);
|
||||
dh::ExecuteShards(&shards_, [&](std::unique_ptr<DeviceShard>& shard) {
|
||||
shard->InitCompressedData(hmat_, batch);
|
||||
});
|
||||
monitor_.Stop("BinningCompression", device_list_);
|
||||
monitor_.Stop("BinningCompression", devices_);
|
||||
|
||||
CHECK(!iter->Next()) << "External memory not supported";
|
||||
|
||||
@ -811,20 +811,20 @@ class GPUHistMaker : public TreeUpdater {
|
||||
|
||||
void InitData(HostDeviceVector<GradientPair>* gpair, DMatrix* dmat,
|
||||
const RegTree& tree) {
|
||||
monitor_.Start("InitDataOnce", device_list_);
|
||||
monitor_.Start("InitDataOnce", devices_);
|
||||
if (!initialised_) {
|
||||
this->InitDataOnce(dmat);
|
||||
}
|
||||
monitor_.Stop("InitDataOnce", device_list_);
|
||||
monitor_.Stop("InitDataOnce", devices_);
|
||||
|
||||
column_sampler_.Init(info_->num_col_, param_);
|
||||
|
||||
// Copy gpair & reset memory
|
||||
monitor_.Start("InitDataReset", device_list_);
|
||||
monitor_.Start("InitDataReset", devices_);
|
||||
|
||||
gpair->Reshard(devices_);
|
||||
dh::ExecuteShards(&shards_, [&](std::unique_ptr<DeviceShard>& shard) {shard->Reset(gpair); });
|
||||
monitor_.Stop("InitDataReset", device_list_);
|
||||
monitor_.Stop("InitDataReset", devices_);
|
||||
}
|
||||
|
||||
void AllReduceHist(int nidx) {
|
||||
@ -1036,12 +1036,12 @@ class GPUHistMaker : public TreeUpdater {
|
||||
RegTree* p_tree) {
|
||||
auto& tree = *p_tree;
|
||||
|
||||
monitor_.Start("InitData", device_list_);
|
||||
monitor_.Start("InitData", devices_);
|
||||
this->InitData(gpair, p_fmat, *p_tree);
|
||||
monitor_.Stop("InitData", device_list_);
|
||||
monitor_.Start("InitRoot", device_list_);
|
||||
monitor_.Stop("InitData", devices_);
|
||||
monitor_.Start("InitRoot", devices_);
|
||||
this->InitRoot(p_tree);
|
||||
monitor_.Stop("InitRoot", device_list_);
|
||||
monitor_.Stop("InitRoot", devices_);
|
||||
|
||||
auto timestamp = qexpand_->size();
|
||||
auto num_leaves = 1;
|
||||
@ -1051,9 +1051,9 @@ class GPUHistMaker : public TreeUpdater {
|
||||
qexpand_->pop();
|
||||
if (!candidate.IsValid(param_, num_leaves)) continue;
|
||||
// std::cout << candidate;
|
||||
monitor_.Start("ApplySplit", device_list_);
|
||||
monitor_.Start("ApplySplit", devices_);
|
||||
this->ApplySplit(candidate, p_tree);
|
||||
monitor_.Stop("ApplySplit", device_list_);
|
||||
monitor_.Stop("ApplySplit", devices_);
|
||||
num_leaves++;
|
||||
|
||||
auto left_child_nidx = tree[candidate.nid].LeftChild();
|
||||
@ -1062,12 +1062,12 @@ class GPUHistMaker : public TreeUpdater {
|
||||
// Only create child entries if needed
|
||||
if (ExpandEntry::ChildIsValid(param_, tree.GetDepth(left_child_nidx),
|
||||
num_leaves)) {
|
||||
monitor_.Start("BuildHist", device_list_);
|
||||
monitor_.Start("BuildHist", devices_);
|
||||
this->BuildHistLeftRight(candidate.nid, left_child_nidx,
|
||||
right_child_nidx);
|
||||
monitor_.Stop("BuildHist", device_list_);
|
||||
monitor_.Stop("BuildHist", devices_);
|
||||
|
||||
monitor_.Start("EvaluateSplits", device_list_);
|
||||
monitor_.Start("EvaluateSplits", devices_);
|
||||
auto splits =
|
||||
this->EvaluateSplits({left_child_nidx, right_child_nidx}, p_tree);
|
||||
qexpand_->push(ExpandEntry(left_child_nidx,
|
||||
@ -1076,21 +1076,21 @@ class GPUHistMaker : public TreeUpdater {
|
||||
qexpand_->push(ExpandEntry(right_child_nidx,
|
||||
tree.GetDepth(right_child_nidx), splits[1],
|
||||
timestamp++));
|
||||
monitor_.Stop("EvaluateSplits", device_list_);
|
||||
monitor_.Stop("EvaluateSplits", devices_);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
bool UpdatePredictionCache(
|
||||
const DMatrix* data, HostDeviceVector<bst_float>* p_out_preds) override {
|
||||
monitor_.Start("UpdatePredictionCache", device_list_);
|
||||
monitor_.Start("UpdatePredictionCache", devices_);
|
||||
if (shards_.empty() || p_last_fmat_ == nullptr || p_last_fmat_ != data)
|
||||
return false;
|
||||
p_out_preds->Reshard(devices_);
|
||||
dh::ExecuteShards(&shards_, [&](std::unique_ptr<DeviceShard>& shard) {
|
||||
shard->UpdatePredictionCache(p_out_preds->DevicePointer(shard->device_idx));
|
||||
});
|
||||
monitor_.Stop("UpdatePredictionCache", device_list_);
|
||||
monitor_.Stop("UpdatePredictionCache", devices_);
|
||||
return true;
|
||||
}
|
||||
|
||||
|
||||
37
tests/cpp/common/test_gpuset.cc
Normal file
37
tests/cpp/common/test_gpuset.cc
Normal file
@ -0,0 +1,37 @@
|
||||
#include "../../../src/common/gpu_set.h"
|
||||
#include <gtest/gtest.h>
|
||||
|
||||
namespace xgboost {
|
||||
|
||||
TEST(GPUSet, Basic) {
|
||||
GPUSet devices = GPUSet::Empty();
|
||||
ASSERT_TRUE(devices.IsEmpty());
|
||||
|
||||
devices = GPUSet{0, 1};
|
||||
ASSERT_TRUE(devices != GPUSet::Empty());
|
||||
EXPECT_EQ(devices.Size(), 1);
|
||||
|
||||
EXPECT_ANY_THROW(devices.Index(1));
|
||||
EXPECT_ANY_THROW(devices.Index(-1));
|
||||
|
||||
devices = GPUSet::Range(1, 0);
|
||||
EXPECT_EQ(devices, GPUSet::Empty());
|
||||
EXPECT_EQ(devices.Size(), 0);
|
||||
EXPECT_TRUE(devices.IsEmpty());
|
||||
|
||||
EXPECT_FALSE(devices.Contains(1));
|
||||
|
||||
devices = GPUSet::Range(2, -1);
|
||||
EXPECT_EQ(devices, GPUSet::Empty());
|
||||
EXPECT_EQ(devices.Size(), 0);
|
||||
EXPECT_TRUE(devices.IsEmpty());
|
||||
|
||||
devices = GPUSet::Range(2, 8);
|
||||
EXPECT_EQ(devices.Size(), 8);
|
||||
devices = devices.Unnormalised();
|
||||
|
||||
EXPECT_EQ(*devices.begin(), 0);
|
||||
EXPECT_EQ(*devices.end(), devices.Size());
|
||||
}
|
||||
|
||||
} // namespace xgboost
|
||||
Loading…
x
Reference in New Issue
Block a user