Last updated: April. 18, 2025

Interests

• Hardware Acceleration(GPU, AMD AI Engine)
• Cryptography(Homomorphic Encryption)
• Systems Software(unikernel, WebAssembly, MLIR)

Publications

International Conferences

1. Ai Nozaki, Takuya Kojima, Hiroshi Nakamura, Hideki Takase, “An Acceleration of Homomorphic Encryption for GPUs focusing on Polynomial-graph” (Poster), Symposium on Low-Power and High-Speed Chips and Systems (COOL Chips 28), Tokyo, Japan, April, 2025 (Featured Poster Award)
2. Ai Nozaki, Takuya Kojima, Hiroshi Nakamura, Hideki Takase, “A Study on Number Theoretic Transform Acceleration on AMD AI Engine”, 16th International Symposium on Embedded Multicore/Many-core Systems-on-Chip (MCSoC), Kuala Lumpur, Malaysia, December, 2024, doi: 10.1109/MCSoC64144.2024.00060.
3. Soichiro Ueda, Ai Nozaki, Daisuke Kotani, Yasuo Okabe, “Mewz: Lightweight Execution Environment for WebAssembly with High Isolation and Portability using Unikernels”, The 2nd Workshop on Hot Topics in System Infrastructure (HotInfra), Austin, USA, November, 2024, https://arxiv.org/html/2411.01129v1.
4. Ai Nozaki, Takuya Kojima, Hiroshi Nakamura, Hideki Takase, “MLIR-based Homomorphic Encryption Compiler for GPUs”, International Symposium on Highly-Efficient Accelerators and Reconfigurable Technologies (HEART), Porto, Portugal, June, 2024, doi: 10.1145/3665283.3665343.

Japanese Domestic Conferences

1. Ai Nozaki, Takuya Kojima, Hiroshi Nakamura, Hideki Takase, “Homomorphic Encryption Compiler for GPUs for Enhancing Data Reuse focusing on Polynomial Operation Graphs”, ETNET2025, Kagoshima, Mar.2025.
2. Motoharu Tsuboi, Ai Nozaki, Takuya Kojima, Hiroshi Nakamura, Hideki Takase, “Accelerating Number Theoretic Transform on AMD AI Engine focusing on Twiddle Factor”, ETNET2025, Kagoshima, Mar.2025.
3. Ai Nozaki, Takuya Kojima, Hiroshi Nakamura, Hideki Takase, “Exploring AMD AI Engine for Accelerating Number Theoretic Transform”, SWoPP2024, Tokushima, Aug.2024. (IPSJ SIGARC Young Researcher Award)
4. Soichiro Ueda, Ai Nozaki, Daisuke Kotani, Toshio Okabe, “Lightweight Execution Environment for WebAssembly with High Isolation and Portability using Unikernels”, SWoPP2024, Tokushima, Aug.2024. (IPSJ SIGOS Young Researcher Award)
5. Marin Matsumoto, Ai Nozaki, Arisa Tsuji, Hideki Takase, Masato Oguchi, “Improving Client-Side Operations in Fully Homomorphic Encryption over the Torus with Single Board Computers”, SWoPP2024, Tokushima, Aug.2024.
6. Ai Nozaki, Takuya Kojima, Hiroshi Nakamura, Hideki Takase, “A Homomorphic Encryption Compiler for GPUs using MLIR”, ETNET2024, Nagasaki, Mar.2024. (IPSJ SIGARC Young Researcher Award, IPSJ Computer Science Research Award for Young)
7. Hiroto Imachi, Ai Nozaki, “Implementation and evaluation of BLAS on MN-Core accelerator”, Technical Report (HPC), Okinawa, Dec.2023.

Awards

1. Featured Poster Award, COOL Chips 28, April, 2025
2. IPSJ SIGARC Young Researcher Award, August, 2024 (HP)
3. IPSJ SIGARC Young Researcher Award, March, 2024 (HP)
4. IPSJ Computer Science Research Award for Young, March, 2024 (HP)

Activities

1. Instructor at the IPA Security Camp, WebAsembly Lab, Aug.2024 (link)
2. Keynote at CloudNative Days Summer, “Next-Generation Cloud Infrastructure: The Present and Future of Wasm”, Jul.2024 (slide(Japanese))
3. IPA MITOU program, “Unikernel degisned for Wasm and Wasm Compiler”, 2023 (link)
4. Talk at Association of Young Scientists in Information Science, “Unikernel degisned for Wasm and Wasm Compiler”, Sep.2023 (slide)
5. Internship at Prefered Network: “Implementation and evaluation of BLAS on MN-Core accelerato”, Aug.2023 (Blog(Japanese))
6. Cybozu Lab Youth program, Developping AArch64 emulator, 2022 (GitHub)
7. NICT SecHack365 program, Developping XDP-based packet analyzing tool, 2021 (Poster)
8. Internship at Google Chrome, 2020年
9. IPA Security Camp, 2020年

Softwares

1. Mewz: Unikernel for WebAssembly GitHub, CloudNative Computing Foundation landscape
2. Wasker: AoT compiler for WebAssembly GitHub
3. AArch64 Emulator (Experimental) GitHub
4. XDP-based tool (Experimental) GitHub