{"id":140272,"date":"2023-06-16T09:47:41","date_gmt":"2023-06-16T00:47:41","guid":{"rendered":"http:\/\/ee.presscat.kr\/?post_type=research-achieve&p=140272"},"modified":"2026-04-13T16:33:40","modified_gmt":"2026-04-13T07:33:40","slug":"joint-research-by-professor-kim-dongjun-john-kim-and-professor-jung-myoungsoo-from-school-of-ee-is-the-first-to-develop-a-high-performance-modular-ssd-solid-state-drive-system-semiconductor","status":"publish","type":"research-achieve","link":"http:\/\/ee.presscat.kr\/en\/research-achieve\/joint-research-by-professor-kim-dongjun-john-kim-and-professor-jung-myoungsoo-from-school-of-ee-is-the-first-to-develop-a-high-performance-modular-ssd-solid-state-drive-system-semiconductor\/","title":{"rendered":"Joint research by Professor Kim Dongjun (John Kim) and Professor Jung Myoungsoo from School of EE is the first to develop a high-performance, modular SSD (Solid State Drive) system semiconductor."},"content":{"rendered":"

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–\u00a0The development of\u00a0SSD system semiconductors applied with flash-dedicated on-chip network technology\u00a0is expected to provide an upper hand advantage in the\u00a0next-generation high-performance SSD market.<\/span><\/p>\n

–\u00a0Reduction in\u00a0response time by up to 31 times compared to existing systems, and lifespan\u00a0increase\u00a0by 23%.<\/span><\/p>\n

–\u00a0Expected\u00a0to contribute to the improvement of various algorithm performances\u00a0that utilize AI\u00a0research and big data analysis technology.<\/span><\/p>\n

 <\/p>\n

The importance of data\u00a0continues to\u00a0increase\u00a0as more data is needed\u00a0for AI training along with the demand for\u00a0high-performance SSD (Solid State Drive, a storage device using semiconductor memory) products, which are major storage devices for data centers and cloud services. <\/span><\/p>\n

However, high-performance SSD products\u00a0have faced\u00a0the limit of tightly-coupled structures\u00a0making it difficult to maximize\u00a0SSD\u00a0performance.\u00a0<\/span><\/p>\n

 <\/p>\n

To address this problem,\u00a0Professor Kim Dongjun\u00a0(John Kim)’s research team developed the world’s first SSD system semiconductor structure that not only drastically increases\u00a0the read\/write performance of next-generation SSDs through the development of high-performance modular SSD systems, but also extends\u00a0the lifespan of SSDs.\u00a0<\/span><\/p>\n

 <\/p>\n

Professor Kim Dongjun’s team identified the limitations of the tightly-coupled structure inherent in traditional SSD designs, and proposed a de-coupled structure that maximizes performance by building a flash memory dedicated on-chip network inside the SSD based on on-chip network technology, which is mainly used in non-memory system semiconductor designs like CPUs and GPUs.<\/span><\/p>\n

 <\/p>\n

This technology, dubbed \u2018modular SSD,\u2019\u00a0allows packet-based data to be freely transmitted within the chip, which reduces the interdependence of SSD’s front-end and back-end designs and allows for independent design and assembly.<\/span><\/p>\n

*On-chip network\u00a0refers to the packet-based connection structure for elements inside a chip used in system semiconductor design\u00a0such as\u00a0CPUs\u00a0and\u00a0GPUs.\u00a0It\u00a0is one of the essential design elements for high-performance system semiconductors and becomes increasingly important as the size of the semiconductor chip increases.<\/span><\/p>\n

 <\/p>\n

The modular SSD system structure developed by Professor Kim Dongjun’s team\u00a0refers to components near the SSD as\u00a0front-end and\u00a0those\u00a0closer to the flash memory as the back-end, based on the internal components of the SSD controller and the flash memory interface. They proposed a de-coupled structure that minimizes performance degradation by newly constructing a flash memory dedicated on-chip network that allows data movement between flash controllers in the back-end.<\/span><\/p>\n

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By accelerating some functions of the flash translation layer, which is the core element driving the SSD,they created an opportunity to actively overcome the limitations of flash memory\u00a0through hardware.\u00a0<\/span><\/p>\n

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The\u00a0‘modular’ SSD structure\u00a0has an advantage in that the\u00a0de-coupled structure\u00a0does not limit the flash translation layer\u00a0to the characteristics of a particular flash memory and provides the convenience of design that allows independent performance of front-end and back-end designs.<\/span><\/p>\n

 <\/p>\n

Through this, response times were reduced\u00a0by 31 times compared to existing systems\u00a0and SSD lifespan\u00a0was extended\u00a0by about 23% by applying it to SSD bad block management, according to a research team official.<\/span><\/p>\n

 <\/p>\n

This study, in which\u00a0Jiho Kim\u00a0(PhD candidate in the\u00a0School\u00a0of\u00a0EE\u00a0at KAIST)\u00a0participated as the first author and Professor Jung Myoungsoo\u00a0as the co-author, is to be presented at the ’50th IEEE\/ACM International Symposium on Computer Architecture (ISCA 2023)’, the most prestigious international academic conference in the field of computer architecture, held in Orlando, Florida, USA, on June 19th. (Paper titled:\u00a0Decoupled SSD: Rethinking SSD Architecture through Network-based Flash Controllers).<\/span><\/p>\n

 <\/p>\n

Professor Kim Dongjun, who led the research, said, “This research is significant in that it identifies the structural limitations of existing SSDs and applies on-chip network technology centered on system memory semiconductors like CPUs to actively perform necessary tasks with hardware,\u00a0and is expected to\u00a0contribute to the next-generation high-performance SSD market.”<\/span><\/p>\n

He explained the significance of the research,\u00a0adding that\u00a0“the de-coupled structure has various uses as it is not limited to performance alone as an SSD structure that operates for lifespan extension.”<\/span><\/p>\n

 <\/p>\n

An official explained that this research carries significance as it was conducted through the\u00a0collaborative\u00a0research of two world-class researchers: Professor Jeong Myoungsoo, a prominent researcher in the field of computer system storage devices at KAIST, and Professor Kim Dongjun, a\u00a0leading figure\u00a0in the field of computer structure and interconnection networks.<\/span><\/p>\n

 <\/p>\n

\"\"<\/span><\/p>\n

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related news:<\/span><\/div>\n
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Chosun Media : \u00a0\uc131\ub2a5\u00b7\uc218\uba85 \ub192\uc778 \uc870\ub9bd\ud615 SSD \uc2dc\uc2a4\ud15c \ubc18\ub3c4\uccb4 \uccab \uac1c\ubc1c – \uc870\uc120\ube44\uc988 (chosun.com)<\/a>\u00a0<\/span><\/div>\n
Etnews :\u00a0KAIST, \uace0\uc131\ub2a5 \uc870\ub9bd\ud615 SSD \uc2dc\uc2a4\ud15c \ubc18\ub3c4\uccb4 \uac1c\ubc1c\u2026\uc751\ub2f5\uc2dc\uac04\u2193, \uc218\uba85\u2191 – \uc804\uc790\uc2e0\ubb38 (etnews.com)<\/a>\u00a0<\/span><\/div>\n
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