Josh Weinstein jweinst1

🎯

Focusing

On a mission to write the fastest software in the world - 中文名字：马龙

jweinst1 / multi-hash-graph.cpp

Last active February 22, 2026 10:35

design of multi map hash map for graph db

jweinst1 / CMakeLists.txt

Created February 16, 2026 01:03

PyBind11 Example After brew install

	cmake_minimum_required(VERSION 3.14)
	project(kvstore_python LANGUAGES CXX)

	# ----------------------------
	# 1) Find Python
	# ----------------------------
	find_package(Python COMPONENTS Interpreter Development REQUIRED)
	message(STATUS "Python executable: ${Python_EXECUTABLE}")
	message(STATUS "Python include dirs: ${Python_INCLUDE_DIRS}")

jweinst1 / hamming_llm.cpp

Last active February 13, 2026 20:34

Hamming distance based LLM without need for training

	#include <iostream>
	#include <vector>
	#include <string>
	#include <random>
	#include <unordered_map>
	#include <arm_neon.h> // Specialized for your M2 chip

	// 1024-bit vector = 128 bytes = 2 Cache Lines
	// We use alignas(64) to ensure the CPU doesn't cross cache line boundaries
	struct alignas(64) HyperVector {

jweinst1 / basic_probe_map.cpp

Created January 23, 2026 22:01

Basic probing map in C++

jweinst1 / mmap_write_perf_tlb_Test.cpp

Last active January 23, 2026 01:15

Shows performance of TLB mmap writes across 1, 100, and 1024 pages

jweinst1 / tlb_alloc.cpp

Last active January 21, 2026 02:29

A tlb aware slot allocator

jweinst1 / level4_bench.cpp

Last active January 17, 2026 00:13

write o1 hashmap

jweinst1 / 32bit_murmur_10mill.cpp

Last active January 12, 2026 04:48

hashmap for murmur3

jweinst1 / hamming_sep_dist.cpp

Last active December 26, 2025 22:52

and pop count of specific segments of bits for 8 bit dimension vectors

jweinst1 / hamming_centers.cpp

Created December 24, 2025 00:31

sorting bit sets of numbers based on hamming distance