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Achievements

Achievement: Pull Sharkx2Achievement: QuickdrawAchievement: YOLO

Achievements

Achievement: Pull Sharkx2Achievement: QuickdrawAchievement: YOLO

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Yudis-bit/README.md

Yudistira Putra

Systems Software Engineer - Compilers · GPU · Firmware · Correctness

C · C++ · Rust
LLVM / AMDGPU · Vulkan · QEMU / x86_64 · RISC-V / OpenSBI · secp256k1

Email · LinkedIn · GitHub

I work where small mistakes become real failures: compiler backends, validation layers, emulators, firmware, and cryptographic code. I reproduce the bug, reduce it, fix the boundary, and leave a regression test behind.

reproduce → reduce → understand → fix → test → upstream

Upstream Work

Project Contribution Status
LLVM / AMDGPU Stopped TFE/LWE image loads from entering SILoadStoreOptimizer merge candidates; added MIR regressions. MERGED
Vulkan Validation Layers Added a bounds guard to static descriptor validation, preventing an out-of-bounds access; added C++ regression coverage. MERGED
OpenSBI / SBI ecall Bounded sbi_ecall_get_extensions_str() to caller capacity; added an SBIUNIT redzone test. MERGED
bitcoin-core / secp256k1 Added CHECKMEM coverage for schnorrsig_sign_custom, including a custom nonce callback. MERGED
OpenSBI / RPMI Proposed bounded copying for fixed-size shared-memory queue names. OPEN
QEMU / x86_64 Independently validated long-mode handling of legacy segment override prefixes. TESTED-BY
Code4rena / Swafe Credited co-finder of M-04: replayable recovery requests could block later recovery; mitigation confirmed. CO-FINDER

Projects

Project Purpose
ecc-audit-engine Reproducible secp256k1 differential testing, failure minimization, replay, and dynamic-trace research.
ArkheionX Local-first smart-contract review infrastructure that turns repositories into deterministic review context.
bitpeek Client-side binary workbench for inspecting, editing, comparing, and interpreting raw bytes.

Focus

Compiler backends · GPU validation · virtualization · RISC-V firmware · cryptographic software · regression infrastructure

Open to full-time, contract, and scoped systems work in C, C++, and Rust.

Pinned Loading

  1. arkheionx arkheionx Public

    Local-first review infrastructure for smart contract security.

    Python 4

  2. Cognitive-Routing-Protocol Cognitive-Routing-Protocol Public

    Seeded Python simulation exploring adaptive routing with Multi-Armed Bandit RL. Compares cognitive router against Dijkstra baseline. Includes reference Solidity NodeRegistry contract.

    Python

  3. Yudis-bit Yudis-bit Public

    Systems software and correctness engineer. C/C++/Rust, compilers, GPU validation, cryptographic differential testing, and local-first review tooling.