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sift_1b.cpp
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#include <iostream>
#include <fstream>
#include <queue>
#include <chrono>
#include "hnswlib/hnswlib.h"
#include <unordered_set>
using namespace std;
using namespace hnswlib;
class StopW {
std::chrono::steady_clock::time_point time_begin;
public:
StopW() {
time_begin = std::chrono::steady_clock::now();
}
float getElapsedTimeMicro() {
std::chrono::steady_clock::time_point time_end = std::chrono::steady_clock::now();
return (std::chrono::duration_cast<std::chrono::microseconds>(time_end - time_begin).count());
}
void reset() {
time_begin = std::chrono::steady_clock::now();
}
};
/*
* Author: David Robert Nadeau
* Site: http://NadeauSoftware.com/
* License: Creative Commons Attribution 3.0 Unported License
* http://creativecommons.org/licenses/by/3.0/deed.en_US
*/
#if defined(_WIN32)
#include <windows.h>
#include <psapi.h>
#elif defined(__unix__) || defined(__unix) || defined(unix) || (defined(__APPLE__) && defined(__MACH__))
#include <unistd.h>
#include <sys/resource.h>
#if defined(__APPLE__) && defined(__MACH__)
#include <mach/mach.h>
#elif (defined(_AIX) || defined(__TOS__AIX__)) || (defined(__sun__) || defined(__sun) || defined(sun) && (defined(__SVR4) || defined(__svr4__)))
#include <fcntl.h>
#include <procfs.h>
#elif defined(__linux__) || defined(__linux) || defined(linux) || defined(__gnu_linux__)
#endif
#else
#error "Cannot define getPeakRSS( ) or getCurrentRSS( ) for an unknown OS."
#endif
/**
* Returns the peak (maximum so far) resident set size (physical
* memory use) measured in bytes, or zero if the value cannot be
* determined on this OS.
*/
static size_t getPeakRSS() {
#if defined(_WIN32)
/* Windows -------------------------------------------------- */
PROCESS_MEMORY_COUNTERS info;
GetProcessMemoryInfo(GetCurrentProcess(), &info, sizeof(info));
return (size_t)info.PeakWorkingSetSize;
#elif (defined(_AIX) || defined(__TOS__AIX__)) || (defined(__sun__) || defined(__sun) || defined(sun) && (defined(__SVR4) || defined(__svr4__)))
/* AIX and Solaris ------------------------------------------ */
struct psinfo psinfo;
int fd = -1;
if ((fd = open("/proc/self/psinfo", O_RDONLY)) == -1)
return (size_t)0L; /* Can't open? */
if (read(fd, &psinfo, sizeof(psinfo)) != sizeof(psinfo))
{
close(fd);
return (size_t)0L; /* Can't read? */
}
close(fd);
return (size_t)(psinfo.pr_rssize * 1024L);
#elif defined(__unix__) || defined(__unix) || defined(unix) || (defined(__APPLE__) && defined(__MACH__))
/* BSD, Linux, and OSX -------------------------------------- */
struct rusage rusage;
getrusage(RUSAGE_SELF, &rusage);
#if defined(__APPLE__) && defined(__MACH__)
return (size_t)rusage.ru_maxrss;
#else
return (size_t) (rusage.ru_maxrss * 1024L);
#endif
#else
/* Unknown OS ----------------------------------------------- */
return (size_t)0L; /* Unsupported. */
#endif
}
/**
* Returns the current resident set size (physical memory use) measured
* in bytes, or zero if the value cannot be determined on this OS.
*/
static size_t getCurrentRSS() {
#if defined(_WIN32)
/* Windows -------------------------------------------------- */
PROCESS_MEMORY_COUNTERS info;
GetProcessMemoryInfo(GetCurrentProcess(), &info, sizeof(info));
return (size_t)info.WorkingSetSize;
#elif defined(__APPLE__) && defined(__MACH__)
/* OSX ------------------------------------------------------ */
struct mach_task_basic_info info;
mach_msg_type_number_t infoCount = MACH_TASK_BASIC_INFO_COUNT;
if (task_info(mach_task_self(), MACH_TASK_BASIC_INFO,
(task_info_t)&info, &infoCount) != KERN_SUCCESS)
return (size_t)0L; /* Can't access? */
return (size_t)info.resident_size;
#elif defined(__linux__) || defined(__linux) || defined(linux) || defined(__gnu_linux__)
/* Linux ---------------------------------------------------- */
long rss = 0L;
FILE *fp = NULL;
if ((fp = fopen("/proc/self/statm", "r")) == NULL)
return (size_t) 0L; /* Can't open? */
if (fscanf(fp, "%*s%ld", &rss) != 1) {
fclose(fp);
return (size_t) 0L; /* Can't read? */
}
fclose(fp);
return (size_t) rss * (size_t) sysconf(_SC_PAGESIZE);
#else
/* AIX, BSD, Solaris, and Unknown OS ------------------------ */
return (size_t)0L; /* Unsupported. */
#endif
}
static void
get_gt(unsigned int *massQA, unsigned char *massQ, unsigned char *mass, size_t vecsize, size_t qsize, L2SpaceI &l2space,
size_t vecdim, vector<std::priority_queue<std::pair<int, labeltype >>> &answers, size_t k) {
(vector<std::priority_queue<std::pair<int, labeltype >>>(qsize)).swap(answers);
DISTFUNC<int> fstdistfunc_ = l2space.get_dist_func();
cout << qsize << "\n";
for (int i = 0; i < qsize; i++) {
for (int j = 0; j < k; j++) {
answers[i].emplace(0.0f, massQA[1000 * i + j]);
}
}
}
static float
test_approx(unsigned char *massQ, size_t vecsize, size_t qsize, HierarchicalNSW<int> &appr_alg, size_t vecdim,
vector<std::priority_queue<std::pair<int, labeltype >>> &answers, size_t k) {
size_t correct = 0;
size_t total = 0;
//uncomment to test in parallel mode:
//#pragma omp parallel for
for (int i = 0; i < qsize; i++) {
std::priority_queue<std::pair<int, labeltype >> result = appr_alg.searchKnn(massQ + vecdim * i, k);
std::priority_queue<std::pair<int, labeltype >> gt(answers[i]);
unordered_set<labeltype> g;
total += gt.size();
while (gt.size()) {
g.insert(gt.top().second);
gt.pop();
}
while (result.size()) {
if (g.find(result.top().second) != g.end()) {
correct++;
} else {
}
result.pop();
}
}
return 1.0f * correct / total;
}
static void
test_vs_recall(unsigned char *massQ, size_t vecsize, size_t qsize, HierarchicalNSW<int> &appr_alg, size_t vecdim,
vector<std::priority_queue<std::pair<int, labeltype >>> &answers, size_t k) {
vector<size_t> efs;// = { 10,10,10,10,10 };
for (int i = k; i < 30; i++) {
efs.push_back(i);
}
for (int i = 30; i < 100; i += 10) {
efs.push_back(i);
}
for (int i = 100; i < 500; i += 40) {
efs.push_back(i);
}
for (size_t ef : efs) {
appr_alg.setEf(ef);
StopW stopw = StopW();
float recall = test_approx(massQ, vecsize, qsize, appr_alg, vecdim, answers, k);
float time_us_per_query = stopw.getElapsedTimeMicro() / qsize;
cout << ef << "\t" << recall << "\t" << time_us_per_query << " us\n";
if (recall > 1.0) {
cout << recall << "\t" << time_us_per_query << " us\n";
break;
}
}
}
inline bool exists_test(const std::string &name) {
ifstream f(name.c_str());
return f.good();
}
void sift_test1B() {
int subset_size_milllions = 200;
int efConstruction = 40;
int M = 16;
size_t vecsize = subset_size_milllions * 1000000;
size_t qsize = 10000;
size_t vecdim = 128;
char path_index[1024];
char path_gt[1024];
char *path_q = "../bigann/bigann_query.bvecs";
char *path_data = "../bigann/bigann_base.bvecs";
sprintf(path_index, "sift1b_%dm_ef_%d_M_%d.bin", subset_size_milllions, efConstruction, M);
sprintf(path_gt, "../bigann/gnd/idx_%dM.ivecs", subset_size_milllions);
unsigned char *massb = new unsigned char[vecdim];
cout << "Loading GT:\n";
ifstream inputGT(path_gt, ios::binary);
unsigned int *massQA = new unsigned int[qsize * 1000];
for (int i = 0; i < qsize; i++) {
int t;
inputGT.read((char *) &t, 4);
inputGT.read((char *) (massQA + 1000 * i), t * 4);
if (t != 1000) {
cout << "err";
return;
}
}
inputGT.close();
cout << "Loading queries:\n";
unsigned char *massQ = new unsigned char[qsize * vecdim];
ifstream inputQ(path_q, ios::binary);
for (int i = 0; i < qsize; i++) {
int in = 0;
inputQ.read((char *) &in, 4);
if (in != 128) {
cout << "file error";
exit(1);
}
inputQ.read((char *) massb, in);
for (int j = 0; j < vecdim; j++) {
massQ[i * vecdim + j] = massb[j];
}
}
inputQ.close();
unsigned char *mass = new unsigned char[vecdim];
ifstream input(path_data, ios::binary);
int in = 0;
L2SpaceI l2space(vecdim);
HierarchicalNSW<int> *appr_alg;
if (exists_test(path_index)) {
cout << "Loading index from " << path_index << ":\n";
appr_alg = new HierarchicalNSW<int>(&l2space, path_index, false);
cout << "Actual memory usage: " << getCurrentRSS() / 1000000 << " Mb \n";
} else {
cout << "Building index:\n";
appr_alg = new HierarchicalNSW<int>(&l2space, vecsize, M, efConstruction);
input.read((char *) &in, 4);
if (in != 128) {
cout << "file error";
exit(1);
}
input.read((char *) massb, in);
for (int j = 0; j < vecdim; j++) {
mass[j] = massb[j] * (1.0f);
}
appr_alg->addPoint((void *) (massb), (size_t) 0);
int j1 = 0;
StopW stopw = StopW();
StopW stopw_full = StopW();
size_t report_every = 100000;
#pragma omp parallel for
for (int i = 1; i < vecsize; i++) {
unsigned char mass[128];
int j2=0;
#pragma omp critical
{
input.read((char *) &in, 4);
if (in != 128) {
cout << "file error";
exit(1);
}
input.read((char *) massb, in);
for (int j = 0; j < vecdim; j++) {
mass[j] = massb[j];
}
j1++;
j2=j1;
if (j1 % report_every == 0) {
cout << j1 / (0.01 * vecsize) << " %, "
<< report_every / (1000.0 * 1e-6 * stopw.getElapsedTimeMicro()) << " kips " << " Mem: "
<< getCurrentRSS() / 1000000 << " Mb \n";
stopw.reset();
}
}
appr_alg->addPoint((void *) (mass), (size_t) j2);
}
input.close();
cout << "Build time:" << 1e-6 * stopw_full.getElapsedTimeMicro() << " seconds\n";
appr_alg->saveIndex(path_index);
}
vector<std::priority_queue<std::pair<int, labeltype >>> answers;
size_t k = 1;
cout << "Parsing gt:\n";
get_gt(massQA, massQ, mass, vecsize, qsize, l2space, vecdim, answers, k);
cout << "Loaded gt\n";
for (int i = 0; i < 1; i++)
test_vs_recall(massQ, vecsize, qsize, *appr_alg, vecdim, answers, k);
cout << "Actual memory usage: " << getCurrentRSS() / 1000000 << " Mb \n";
return;
}