ERROR: IPC connection error when querying the DB

[justram]

Hello teams,

Issue

I encountered the same IPC connection issue with v0.4.0-alpha.2 as mentioned in #592

I followed the zip package installation guide to install pgvecto.rs.
The issue occurred while using both the flat and hnsw indexes with the relatively small glove_100_cosine dataset.
I also tested the same setup using the pgvector package (v0.7.4) and did not encounter any issues.

Environment Info

I installed PostgreSQL and related packages using conda, as I am unable to use Docker images on my server.

System Info

Ubuntu 22.04.3 LTS
Mem 1.0Ti

To reproduce my environment, you can use the following commands:

conda create -n pg python=3.10
conda activate pg
conda install -c -y conda-forge postgresql=16.4
conda install -c -y conda-forge psycopg 
wget https://github.com/tensorchord/pgvecto.rs/releases/download/v0.4.0-alpha.2/vectors-pg16_x86_64-unknown-linux-gnu_0.4.0-alpha.2.zip
unzip vectors-pg16_x86_64-unknown-linux-gnu_0.4.0-alpha.2.zip -d vectors
cp vectors/vectors.so $(pg_config --pkglibdir)/
cp vectors/vectors--* $(pg_config --sharedir)/extension/
cp vectors/vectors.control $(pg_config --sharedir)/extension/
initdb -D db_pgvecto_rs
pg_ctl -D db_pgvecto_rs -l logfile -o "-F -p 9527" start
psql -d postgres --port 9527 -c 'CREATE ROLE postgres WITH LOGIN SUPERUSER;'
psql -U postgres --port 9527 -c 'ALTER SYSTEM SET shared_preload_libraries = "vectors.so"'
psql -U postgres --port 9527 -c 'ALTER SYSTEM SET search_path TO "$user", public, vectors'
pg_ctl -D db_pgvecto_rs -l logfile -o "-F -p 9527" restart

Any suggestions would be appreciated.