Chip industry continues advancing and expanding modern computing systems, resulting in more complex multi-core processors. Conversely, academic projects face scalability challenges due to limited resources, highlighting the need for open-source frameworks that enable innovation and knowledge sharing. Recently, several open-source proposals have emerged, offering flexible and scalable designs, but fail to meet the performance demands of modern High-Performance Computing (HPC) applications. In this project, we present REPTILES, an open-source RISC-V multicore framework based on OpenPiton\thanks. REPTILES interconnects multiple Sargantana cores with the memory hierarchy of OpenPiton. Moreover, we present the new features incorporated in Sargantana and OpenPiton designs to improve the performance of HPC applications. We demonstrate that REPTILES presents suitable scalability, achieving a speedup of 3.1x on average with 4 cores. Additionally, we show that Sargantana's new features increase the performance of vector addition benchmark in a 9.3x.

翻译：芯片产业持续发展并扩展现代计算系统，催生出更复杂的多核处理器。然而，学术项目因资源有限面临可扩展性挑战，亟需能促进创新与知识共享的开源框架。近年来虽涌现出多个提供灵活可扩展设计的开源方案，但均未能满足现代高性能计算（HPC）应用的性能需求。本项目提出REPTILES——一个基于OpenPiton的开源RISC-V多核框架。REPTILES通过OpenPiton存储层次结构实现多个Sargantana核心的互连。同时，我们介绍了为提升HPC应用性能而在Sargantana与OpenPiton设计中新增的特性。实验证明，REPTILES具备良好的可扩展性，4核配置下平均加速比达3.1倍。此外，Sargantana新增特性使向量加法基准测试性能提升9.3倍。