v0.1.0

shmem v0.1.0

Zero-copy shared memory key-value store for sharing numpy arrays and raw bytes between Python processes.

Highlights

• put() copies data into shared memory (one memcpy)
• get() returns a read-only zero-copy np.ndarray view — ~3.5μs regardless of data size
• get_mut() returns a writable zero-copy view for in-place mutation
• put_bytes() / get_bytes() for raw bytes with zero-copy memoryview
• Readers-writers locking for safe multi-process access
• Free-list allocator with forward/backward coalescing

Performance (1080p, 6.2 MB)

Operation	Latency
put()	~300 μs
get() (zero-copy)	~3.5 μs
Cross-process throughput	~10 GB/s

Install

uv add shmem@https://github.com/zeeshanhaque21/shmem/releases/download/v0.1.0/shmem-0.1.0-py3-none-any.whl

Requires Python ≥ 3.12 and NumPy ≥ 2.0.