arXiv 2102.048752021-02-17cs.DC

OptSmart：一种空间有效的乐观并发执行智能合约

OptSmart: A Space Efficient Optimistic Concurrent Execution of Smart Contracts

Parwat Singh Anjana, Sweta Kumari, Sathya Peri, Sachin Rathor, Archit Somani

备注：: 43 pages, 13 figure, 1 Table

摘要：

流行的区块链，如以太坊和其他几个区块链，通过用户定义的脚本（称为智能合约）在块中执行复杂的交易。智能合约交易/原子单元（AU）的串行执行无法利用多核处理器的普及所提供的多处理能力。通过向AU的执行添加并发性，我们可以实现更好的效率和更高的吞吐量。在本文中，我们开发了一个并发矿工，提出了一个块执行的AU同时使用乐观的软件transmittance内存系统（STM）。它有效地捕获并发bin中的独立AU和块图（BG）中的依赖AU。稍后，我们提出了一个并发验证器，它使用并发bin和矿工给出的BG来并行和确定性地重新执行相同的AU，以验证所提出的区块。我们严格证明了并发执行的AU的正确性，并取得了显着的性能增益超过国家的最先进的。

英文摘要：

Popular blockchains such as Ethereum and several others execute complex transactions in blocks through user-defined scripts known as smart contracts. Serial execution of smart contract transactions/atomic-units (AUs) fails to harness the multiprocessing power offered by the prevalence of multi-core processors. By adding concurrency to the execution of AUs, we can achieve better efficiency and higher throughput. In this paper, we develop a concurrent miner that proposes a block by executing the AUs concurrently using optimistic Software Transactional Memory systems (STMs). It captures the independent AUs in a concurrent bin and dependent AUs in the block graph (BG) efficiently. Later, we propose a concurrent validator that re-executes the same AUs concurrently and deterministically using a concurrent bin followed by a BG given by the miner to verify the proposed block. We rigorously prove the correctness of concurrent execution of AUs and achieve significant performance gain over the state-of-the-art.

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。

摘要：

英文摘要：

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