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Toiab Zahoor Systems & Core Software
Building High-Performance Freestanding Systems & Simulations

Low-Level Systems, Graphics & Computational Physics

Hi, I'm Toiab Zahoor. I engineer freestanding operating system kernels, SIMD-accelerated engines, real-time CFD fluid solvers, general relativistic astrophysics simulators, and GPU-targeted compiler virtual machines.

x86_64 Freestanding Kernel
AVX-512 SIMD Optimization
D3Q19 3D LBM Fluid Solver
CUDA / Wasm Accelerated VMs
Featured Engineering Projects

Deep Tech Systems Portfolio

x86_64 Kernel C++ / NASM / QEMU

ZweiOS

A high-performance freestanding x86_64 operating system kernel. Features dual ELF & Win32 PE binary execution, VBE GUI compositor with window manager, FAT32/VFS, SMP scheduling, and full TCP/IP networking with TLS.

Dual ELF / PE Loader VBE Compositor TCP/IP & TLS SMP & VMM
Chess Engine C++20 / AVX-512

Zweidrei

Cutting-edge experimental chess engine utilizing AVX-512 vectorization, bitboards, magic bitboard move generation, NNUE (Efficiently Updatable Neural Network) evaluation, and lockless multi-threaded search.

AVX-512 SIMD NNUE Inference Magic Bitboards UCI Protocol
3D Fluid Dynamics C++ / Qt6 / VTK

ZweiCFD

Volumetric 3D Computational Fluid Dynamics suite powered by Lattice Boltzmann Method (D3Q19). Features Signed Distance Field (SDF) geometry, real-time streamline integration, and airfoil polar analysis.

LBM D3Q19 SDF Geometry VTK Visualization GPU Advection
Circuit Simulator C++ Wasm / TypeScript

ZweiLab

Interactive electronics lab and schematic CAD workbench. Solves Modified Nodal Analysis (MNA) in real-time via high-speed C++ WebAssembly with visual breadboard routing and multi-channel oscilloscope.

C++ Wasm MNA Interactive CAD Oscilloscope UI Logic Analyzer
Astrophysics C++17 / raylib / GL

ZweiTron

Relativistic stellar astrophysics simulator. Solves Tolman-Oppenheimer-Volkoff (TOV) differential equations with Runge-Kutta 4, modeling neutron star collapse past the TOV limit into spinning Kerr black holes with jets.

TOV Equations RK4 Numerical Solver Relativistic Beaming raylib 3D Shader
Compiler & GPU VM Rust / CUDA / NVRTC

Zweriz

Custom programming language and bytecode execution runtime written in Rust 2024. Features AST compilation, register/stack bytecode VM, first-class closures, and JIT CUDA kernel execution for parallel evaluation.

Bytecode Compiler Stack & JIT VM CUDA / NVRTC FFI & Closures
Interactive Shell

Direct System Access

Test my projects directly through the interactive web CLI. Type help or click the command badges.

session: toiab@zwei-kernel ~ /bin/sh
Quick run:
Zwei System Environment v2.4 [x86_64 freestanding toolchain]
Type help to view available system commands or click any preset above.
toiab@system:~$
Systems Engineering Capabilities

Core Competencies & Stack

Engineering software from bare silicon and ring 0 kernel structures up to high-speed graphics visualization and distributed algorithms.

Low-Level & Kernel

Freestanding kernels, paging (VMM/PMM), interrupt handling (APIC/IDT), binary loaders (ELF/PE), Ring 3 context switching.

C++ x86_64 ASM NASM QEMU

SIMD & Micro-Optimization

Vectorized compute kernels, AVX-512 / AVX2 intrinsics, lockless atomic data structures, cache line alignment, bitboards.

AVX-512 Intrinsics Lockless TT C++20

Physics & CFD Solvers

Lattice Boltzmann (LBM D3Q19), numerical integration (RK4), relativistic TOV stellar equations, Modified Nodal Analysis (MNA).

LBM CFD RK4 TOV VTK OpenGL

Compilers & Bytecode VMs

Lexical analysis, recursive-descent/Pratt parsers, ASTs, bytecode emission, stack VMs, dynamic FFI, and GPU CUDA execution.

Rust CUDA / NVRTC Wasm Bytecode
About The Developer

Passionate about First-Principles Engineering

I am a software engineer focused on building robust systems from the ground up without relying on black-box abstractions. Whether it's crafting an x86_64 operating system kernel that can run both Linux ELF and Windows Win32 PE binaries, optimizing chess engines with AVX-512 SIMD pipelines, or solving differential relativity equations in real-time raylib visualizations.

My projects emphasize mechanical sympathy, mathematical rigor, clean architecture, and extreme execution speed.

Name Toiab Zahoor
Primary Languages C++, C, Rust, x86_64 ASM, Python, TypeScript
Domains Operating Systems, SIMD, CFD Fluids, Astrophysics, Compilers
Connect

Let's Build Something High Performance

Interested in discussing operating systems architecture, low-level optimization, physics simulation, or collaborating on systems software?