add cuda

rin/miner/gpu/RinHash-cuda/README.md

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+# RinHash CUDA Implementation
+
+🚀 High-performance GPU implementation of RinHash – an ASIC-resistant hashing algorithm designed for RinCoin mining.
+
+## 🔧 Algorithm Overview
+
+RinHash is a custom Proof-of-Work algorithm designed to resist ASICs by combining three cryptographic hash functions:
+
+1. **BLAKE3** – Fast and modern hashing.
+2. **Argon2d** – Memory-hard password hashing (64KB, 2 iterations).
+3. **SHA3-256** – Secure final hash.
+
+The final output is a 32-byte SHA3-256 digest of the Argon2d result, which itself is applied to the BLAKE3 hash of the input block header.
+
+---
+
+## 💻 CUDA Implementation
+
+This repository contains a full GPU-based implementation of RinHash, ported to CUDA for use in high-efficiency miners. Key features include:
+
+- Full GPU parallelization of BLAKE3, Argon2d, and SHA3-256
+- Memory-hard Argon2d executed entirely on device memory
+- Batch processing support for multiple nonces
+- Matching hash output with official CPU implementation
+
+---