Researcher's Dream

A passion for creating new value through computing innovation

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Portrait of Yusuke Nagasaka

Yusuke Nagasaka

Computing Laboratory
Graduate School of Information Science and Technology
Joined Fujitsu in 2019
My Purpose: Innovation lies beyond accumulation
My hobbies are running, reading and cooking.

Published on December 25, 2023

Motivated by applying tuning to shorten the calculation time, even if just by one second

I majored in informatics at university and worked on research to optimize the performance of matrix calculations in the High Performance Computing (HPC) lab at graduate school. I became obsessed with improving calculation speed through repeated trial and error, such as coming up with new algorithms and tuning software. I was thrilled and delighted to see tangible results, such as calculations that used to take an hour but could be done in just 10 minutes! The experience of being able to produce results on my own gave me confidence, and this is what made me decide to pursue a career as a researcher. My next decision was to continue my research on HPC, and I applied to join Fujitsu, which focuses on R&D in that field.

Challenging joint research on drug discovery technology

Since joining the company, I have been working on software acceleration, and from 2022, I have been participating in a joint research project on drug discovery. In the beginning, I had difficulty understanding what the researchers at the collaborative research sites were talking about, because I lacked knowledge about chemistry and biology. However, through conversations and learning from the people involved, I absorbed knowledge and gradually became able to discuss issues and techniques with confidence. The development of a new drug takes time in units of 5 to 10 years. We believe that the use of computing can dramatically improve the efficiency of new drug development. By combining computing technology with AI, we aim to develop simulation technology that is useful for faster drug discovery. In our joint research with RIKEN, we are using supercomputer Fugaku to build a new IT drug discovery process with an eye toward middle and large-molecular drugs (*1). By widely disseminating this process to pharmaceutical and other companies, we aim to dramatically reduce the time and cost required for new drug development.

Portrait of Yusuke Nagasaka

Combining technologies to shape the future

In weather forecasting, information such as past weather data, changes in atmospheric pressure, and the movement of rain clouds are collected and used to simulate and forecast the weather. For complex computational problems such as weather forecasting, it is important not only to enhance computational resources but also to advance simulation technology. On the other hand, the application of AI, as exemplified by ChatGPT, has recently been advancing rapidly. However, the development of AI models through machine learning, such as deep learning, and the processing of real-time data require the use of computing technology, which in turn requires the enhancement of computing resources to perform enormous calculations. Although computing technology will be an important factor in solving social issues, it is necessary to consider a comprehensive approach by combining multiple technologies, not just individual ones.

Portrait of Yusuke Nagasaka

From trial and error to innovation

I imagine the R&D I am aiming for is like an ocean. First, I believe it is important in research to pursue a particular research area in depth. Expertise related to speeding up matrix calculations and tuning programs in the computing area will be under continuous development. However, as the range of applications expands, I am strongly reminded of the need for knowledge in other areas as well. I am striving to broaden my knowledge base, even if only a little.

The approach to research that I value as a researcher is one of trial and error. I feel it is important to try out what we can, including program implementation and evaluation, and to consider and make progress each time. Although there are times when we don’t manage to achieve good results, I believe that if I keep my mind open to challenges, the experience I have accumulated will lead to new insights and possibilities for innovation. By combining deep expertise with a broad perspective, I hope to innovate technology through my research.

Editor's note

Editor: Xiang Yi Peck, Communication Strategy Division

Yusuke talked about the joys he derived while immersed in R&D of program acceleration during his university years. Despite being busy with work and dedicating a significant amount of time to managerial tasks, Yusuke expressed a desire to go back to his initial research roots and engage in programming when he has some free time. His profound curiosity within his field of expertise serves as a great inspiration and resonates deeply with me.

Titles, numerical values, and proper nouns in this document are those reported when this interview was made.

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