/
bfloat16_example.py
68 lines (58 loc) · 2.18 KB
/
bfloat16_example.py
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import time
import random
import numpy as np
import tensorflow as tf
from pymilvus import (
connections,
utility,
FieldSchema, CollectionSchema, DataType,
Collection,
)
from pymilvus import MilvusClient
bf16_index_types = ["FLAT"]
default_bf16_index_params = [{"nlist": 128}]
def gen_bf16_vectors(num, dim):
raw_vectors = []
bf16_vectors = []
for _ in range(num):
raw_vector = [random.random() for _ in range(dim)]
raw_vectors.append(raw_vector)
bf16_vector = tf.cast(raw_vector, dtype=tf.bfloat16).numpy()
bf16_vectors.append(bf16_vector)
return raw_vectors, bf16_vectors
def bf16_vector_search():
connections.connect()
int64_field = FieldSchema(name="int64", dtype=DataType.INT64, is_primary=True, auto_id=True)
dim = 128
nb = 3000
vector_field_name = "bfloat16_vector"
bf16_vector = FieldSchema(name=vector_field_name, dtype=DataType.BFLOAT16_VECTOR, dim=dim)
schema = CollectionSchema(fields=[int64_field, bf16_vector])
if utility.has_collection("hello_milvus_fp16"):
utility.drop_collection("hello_milvus_fp16")
hello_milvus = Collection("hello_milvus_fp16", schema, consistency_level="Strong")
_, vectors = gen_bf16_vectors(nb, dim)
hello_milvus.insert([vectors[:6]])
rows = [
{vector_field_name: vectors[6]},
{vector_field_name: vectors[7]},
{vector_field_name: vectors[8]},
{vector_field_name: vectors[9]},
{vector_field_name: vectors[10]},
{vector_field_name: vectors[11]},
]
hello_milvus.insert(rows)
hello_milvus.flush()
for i, index_type in enumerate(bf16_index_types):
index_params = default_bf16_index_params[i]
hello_milvus.create_index(vector_field_name,
index_params={"index_type": index_type, "params": index_params, "metric_type": "L2"})
hello_milvus.load()
print("index_type = ", index_type)
res = hello_milvus.search(vectors[0:10], vector_field_name, {"metric_type": "L2"}, limit=1)
print(res)
hello_milvus.release()
hello_milvus.drop_index()
hello_milvus.drop()
if __name__ == "__main__":
bf16_vector_search()