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High-level synthesis (HLS) shortens the development time of hardware designs and enables faster design space exploration at a higher abstraction level. Optimization of complex applications in HLS is challenging due to the effects of…

Distributed, Parallel, and Cluster Computing · Computer Science 2019-05-13 Jieru Zhao , Tingyuan Liang , Sharad Sinha , Wei Zhang

High-Level Synthesis (HLS) is increasingly popular for hardware design using C/C++ instead of Register-Transfer Level (RTL). To express concurrent hardware behavior in a sequential language like C/C++, HLS tools introduce constructs such as…

Hardware Architecture · Computer Science 2025-08-28 Rishov Sarkar , Cong Hao

High-Level Synthesis has introduced reconfigurable logic to a new world -- that of software development. The newest wave of HLS tools has been successful, and the future looks bright. But is HLS the end-all-be-all to FPGA acceleration? Is…

Hardware Architecture · Computer Science 2021-04-07 Pedro Filipe Silva , João Bispo , Nuno Paulino

The design of efficient hardware accelerators for high-throughput data-processing applications, e.g., deep neural networks, is a challenging task in computer architecture design. In this regard, High-Level Synthesis (HLS) emerges as a…

Hardware Architecture · Computer Science 2021-11-30 Lorenzo Ferretti , Andrea Cini , Georgios Zacharopoulos , Cesare Alippi , Laura Pozzi

High-Level Synthesis (HLS) plays a crucial role in modern hardware design by transforming high-level code into optimized hardware implementations. However, progress in applying machine learning (ML) to HLS optimization has been hindered by…

Hardware Architecture · Computer Science 2025-08-05 Zedong Peng , Zeju Li , Mingzhe Gao , Qiang Xu , Chen Zhang , Jieru Zhao

High-level synthesis (HLS) has freed the computer architects from developing their designs in a very low-level language and needing to exactly specify how the data should be transferred in register-level. With the help of HLS, the hardware…

Hardware Architecture · Computer Science 2021-11-23 Atefeh Sohrabizadeh , Yunsheng Bai , Yizhou Sun , Jason Cong

High-Level Synthesis (HLS) is emerging as a mainstream design methodology, allowing software designers to enjoy the benefits of a hardware implementation. Significant work has led to effective compilers that produce high-quality hardware…

Software Engineering · Computer Science 2015-08-28 Jeffrey Goeders , Steven J. E. Wilton

FPGA-based heterogeneous architectures provide programmers with the ability to customize their hardware accelerators for flexible acceleration of many workloads. Nonetheless, such advantages come at the cost of sacrificing programmability.…

Hardware Architecture · Computer Science 2018-07-05 Jason Cong , Zhenman Fang , Yuchen Hao , Peng Wei , Cody Hao Yu , Chen Zhang , Peipei Zhou

High-Level Synthesis (HLS) enables hardware design from C/C++ kernels but requires extensive transformations, such as restructuring code, inserting pragmas, adapting data types, and repairing non-synthesizable constructs, to achieve…

Hardware Architecture · Computer Science 2025-12-05 Qingyun Zou , Nuo Chen , Yao Chen , Bingsheng He , WengFei Wong

High-level synthesis (HLS) enables designers to customize hardware designs efficiently. However, it is still challenging to foresee the correlation between power consumption and HLS-based applications at an early design stage. To overcome…

Hardware Architecture · Computer Science 2020-09-03 Zhe Lin , Jieru Zhao , Sharad Sinha , Wei Zhang

In recent years, hardware accelerators based on field-programmable gate arrays (FPGAs) have been widely adopted, thanks to FPGAs' extraordinary flexibility. However, with the high flexibility comes the difficulty in design and optimization.…

Hardware Architecture · Computer Science 2022-07-19 Mang Yu , Sitao Huang , Deming Chen

FPGA-based accelerators are becoming more popular for deep neural network due to the ability to scale performance with increasing degree of specialization with dataflow architectures or custom data types. To reduce the barrier for software…

Hardware Architecture · Computer Science 2022-04-12 Syed Asad Alam , David Gregg , Giulio Gambardella , Thomas Preusser , Michaela Blott

Polyhedral optimisation, a methodology that views nested loops as polyhedra and searches for their optimal transformation regarding specific objectives (parallelism, locality, etc.), sounds promising for mitigating difficulties in…

Programming Languages · Computer Science 2021-03-30 Ruizhe Zhao , Jianyi Cheng

C/C++/OpenCL-based high-level synthesis (HLS) becomes more and more popular for field-programmable gate array (FPGA) accelerators in many application domains in recent years, thanks to its competitive quality of results (QoR) and short…

Hardware Architecture · Computer Science 2021-05-07 Yuze Chi , Licheng Guo , Jason Lau , Young-kyu Choi , Jie Wang , Jason Cong

High-Level Synthesis allows hardware designers to create complex RTL designs using C/C++. The traditional HLS workflow involves iterations of C/C++ simulation for partial functional verification and HLS synthesis for coarse timing…

Performance · Computer Science 2023-04-25 Rishov Sarkar , Cong Hao

As the complexity of digital circuits increases, High-Level Synthesis (HLS) is becoming a valuable tool to increase productivity and design reuse by utilizing relevant Electronic Design Automation (EDA) flows, either for…

Cryptography and Security · Computer Science 2023-12-12 Amalia Artemis Koufopoulou , Kalliopi Xevgeni , Athanasios Papadimitriou , Mihalis Psarakis , David Hely

The algorithm-to-hardware High-level synthesis (HLS) tools today are purported to produce hardware comparable in quality to handcrafted designs, particularly with user directive driven or domains specific HLS. However, HLS tools are not…

Distributed, Parallel, and Cluster Computing · Computer Science 2015-08-28 Vinay B. Y. Kumar , Pinalkumar Engineer , Mandar Datar , Yatish Turakhia , Saurabh Agarwal , Sanket Diwale , Sachin B. Patkar

High-level synthesis (HLS) is a design flow that leverages modern language features and flexibility, such as complex data structures, inheritance, templates, etc., to prototype hardware designs rapidly. However, exploring various design…

Hardware Architecture · Computer Science 2024-03-19 Md Rubel Ahmed , Toshiaki Koike-Akino , Kieran Parsons , Ye Wang

High dynamic range (HDR) imaging combines multiple images with different exposure times into a single high-quality image. The image signal processing pipeline (ISP) is a core component in digital cameras to perform these operations. It…

Image and Video Processing · Electrical Eng. & Systems 2021-10-05 Prashant Chaudhari , Franziska Schirrmacher , Andreas Maier , Christian Riess , Thomas Köhler

High-level synthesis (HLS) refers to the automatic translation of a software program written in a high-level language into a hardware design. Modern HLS tools have moved away from the traditional approach of static (compile time) scheduling…

Hardware Architecture · Computer Science 2023-08-23 Aditya Rajagopal , Diederik Adriaan Vink , Jianyi Cheng , Yann Herklotz