{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 21,
   "id": "7da40592-4c80-4775-b965-e758f844393a",
   "metadata": {},
   "outputs": [],
   "source": [
    "import numpy as np\n",
    "import torch\n",
    "import faiss\n",
    "from faiss import write_index, read_index\n",
    "from datasets import load_dataset"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "id": "1049edf4-724e-48f2-95ba-45a957a37761",
   "metadata": {},
   "outputs": [
    {
     "name": "stderr",
     "output_type": "stream",
     "text": [
      "Found cached dataset json (/home/jue@together.xyz/.cache/huggingface/datasets/json/default-708d018dd07be607/0.0.0/8bb11242116d547c741b2e8a1f18598ffdd40a1d4f2a2872c7a28b697434bc96)\n"
     ]
    }
   ],
   "source": [
    "data = load_dataset('json', data_files='/var/cr01_data/danfu_data/rp_data_raw/wikipedia/wiki.jsonl', split='train')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "id": "1ec75e11-566f-4568-8056-77909204453c",
   "metadata": {},
   "outputs": [],
   "source": [
    "embs = np.memmap('../indexed_data/wiki_embs.mmp', shape=(len(data), 768), dtype=np.float16, mode='r')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "id": "ff2724af-1834-4560-9cb7-bf507f111404",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "(29834171, 768)"
      ]
     },
     "execution_count": 6,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "embs.shape"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 7,
   "id": "2159bbfc-0339-4c45-bce9-6722ff70fb71",
   "metadata": {},
   "outputs": [],
   "source": [
    "m = 8\n",
    "ncells = 1000\n",
    "d = embs.shape[-1]\n",
    "quantizer = faiss.IndexFlatIP(d)\n",
    "index = faiss.IndexIVFPQ(quantizer, d, ncells, m, 8)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 8,
   "id": "7420e87e-e6cb-4071-ad35-0d962d4bf13f",
   "metadata": {},
   "outputs": [],
   "source": [
    "index.train(embs[0:10_000_000:10])"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 9,
   "id": "f46987a6-3c20-4e6a-bc2d-3c7320da7fcf",
   "metadata": {},
   "outputs": [],
   "source": [
    "index.add(embs)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 19,
   "id": "e0cca6aa-c880-47b1-8b51-59e5d7bccf8c",
   "metadata": {},
   "outputs": [],
   "source": [
    "_, ids = index.search(embs[100][None], k=5)\n",
    "assert ids[0,0] == 100"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 22,
   "id": "a5225c5f-79d0-4121-b858-575469e4c7b2",
   "metadata": {},
   "outputs": [],
   "source": [
    "write_index(index, '../indexed_data/wiki.index')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 23,
   "id": "b58c7f72-9127-4002-b803-874bb5e2d298",
   "metadata": {},
   "outputs": [],
   "source": [
    "index = read_index('../indexed_data/wiki.index')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 24,
   "id": "c93a91d6-883c-4c5f-8b34-52b6a8871d60",
   "metadata": {},
   "outputs": [],
   "source": [
    "_, ids = index.search(embs[100][None], k=5)\n",
    "assert ids[0,0] == 100"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "02a68288-f6e4-4fff-8975-d76bcffd26d1",
   "metadata": {},
   "outputs": [],
   "source": []
  }
 ],
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