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News Timeline all News Events Research Monthly archives 2024, April 2024, February 2024, January 2023, November 2023, October 2023, September 2023, August 2023, July 2023, June 2023, May 2023, April 2023, March 2023, January 2022, December 2022, November 2022, October 2022, September 2022, July 2022, May 2022, April 2022, January 2021, December 2021, November 2021, September 2021, August 2021, July 2021, June 2021, March 2021, January 2020, November 2020, October 2020, September 2020, August 2020, July 2020, June 2020, April 2020, March 2020, February 2020, January 2019, December 2019, November 2019, September 2019, August 2019, July 2019, May 2019, April 2019, March 2019, February 2019, January 2018, December 2018, November 2018, October 2018, September 2018, August 2018, July 2018, June 2018, May 2018, March 2018, February 2018, January 2017, December 2017, November 2017, October 2017, September 2017, August 2017, July 2017, June 2017, May 2017, March 2017, February 2017, January 2016, December 2016, November 2016, October 2016, September 2016, August 2016, July 2016, June 2016, May 2016, April 2016, March 2016, February 2016, January 2015, December 2015, November 2015, October 2015, September 2015, August 2015, July 2015, June 2015, May 2015, April 2015, March 2015, February 2015, January 2014, November 2014, October 2014, August 2014, July 2014, April 2014, March 2014, February 2014, January 2013, November 2013, August 2013, July 2013, June 2013, May 2013, April 2013, February 2013, January 2012, December 2012, November 2012, October 2012, September 2012, April 2012, March 2012, February The Supercomputer System has been renewed! News: 2023/03/28 In April 2022, the supercomputer system behind the Tohoku Medical Megabank Project underwent a wide-scale system expansion. The supercomputer system has only undergone one update (in June 2018, for the purposes of making it more widely accessible) since it was first put into operation in July 2014. This marks the second significant update since first update. What is included in the new update? -The total number of CPU cores has increasedfrom 8,900 to 14,880, and the capacityof high-speed storage hasaugmentedfrom 29PB to 55PB,resulting in considerably enhanced computing power. -The number of compute nodes per unit in the new system can be easily changed, allowing computing capacity to be dynamically redistributed from units with ample capacity to those with insufficient capacity, resulting in increased flexibility and reduced congestion. -The public unit (Unit A) of the new system can now be accessed from the user's PC via a web browser, providing added convenience.   Details of the New Update The Efficient Usage of Compute Nodes and High-speed Storage ToMMo’s supercomputer stores a variety of data, from highly-sensitive data such as individual-level genome data to low-sensitive data such as allele frequencies. Data must be managed according to its level of sensitivity. To accomplish this, ToMMo’s supercomputer is divided into three units, and the type of data that can be analyzed in each unit is defined. Unit A is for development publicly accessible via internet, Unit B is for data distribution by data visiting, and Unit C is for data preprocessing. The processed data in Unit C is transferred to Unit B for the use from all over Japan by data visiting. In the previous system, different physical compute nodes were deployed for each unit, and each unit was operated independently. This resulted in issues, such as Unit A being congested when being utilized for large amounts of analysis, meanwhile Unit B was completely idle. The unused compute nodes in Unit B could not be used in Unit A, and therefore this raised the challenge of creating a system where nodes were efficiently used. In the new system, all compute nodes are connected to the same physical network, where the isolation of units is implemented virtually. This allows the administrator to easily change the number of compute nodes per unit according to their congestion status. As a result, not only does it increase the flexibility of the supercomputer system, but it also reduces congestion. Like the compute nodes, the storage system in the new system also employs virtual isolation mechanisms. This will lead to greater efficiency in terms of storage usage in the data distribution process at ToMMo. In the previous system, data analyzed in the unit for data preprocessing (Unit C) were copied to the unit for data distribution (Unit B) to provide the data to collaborators. This meant that the same file existed in both Unit B and Unit C, consuming twice as much storage space. In contrast, the new system allows the same file to be used from both Unit B and Unit C, resulting in more efficient use of storage capacity. Changes in the Login System In the unit for data distribution (Unit B) and the unit for data preprocessing (Unit C) of the previous system, in order to achieve secure management of sensitive data (such as genome data), a two-factor authentication was required to log in to the system. First, the user was to log in to a Windows virtual desktop, and then the user was to log in to a Linux compute node to access the supercomputer. This two-step login mechanism was difficult to understand and unpopular with users. The new system allows users to log in directly to the compute node with a single authentication to improve usability. Additionally, the previous system utilized a combination of fingerprint authentication and public key authentication to log in to the system, whereas the new system utilizes two-factor authentication with the user’s ID, password, and their smartphones. To access Unit A of the previous system, users needed to install an SSH client or dedicated connection software on their PC, which made things complicated. On the other hand, the new system has saved users a lot of time and effort by letting them connect through a GUI that can be accessed by opening a URL for Unit A in a web browser. Changes in the Backup System The previous system was equipped with an approximately 29PB LTO tape library for data backup. In addition to the tape library, the new system also contains two new backup systems: an object storage system (rewritable) and an optical disc library (non-rewritable, for long-term storage use). The new system promotes efficient data backup by selecting the backup system based on differences such as whether the data to be backed up can be recreated and the storage period.     Related Link Facilities and Equipment > Supercomputer System News Timeline Tweet About Mission and Outline Background Activities For Community Message from Executive Director Organization and Members Policy Research Cohort Study and Biobank Integrative Genomics Publications Facilities and Equipment Researchers Ethical Issues Specimen &＃038; Data Collection ToMMo's Library News Timeline access & contact sitemap links JAPANESE Large Small A A Copyright(C) Tohoku University Tohoku Medical Megabank Organization All Rights Reserved. sitemap access & contact About Research Ethical Issues Specimen &＃038; Data Collection ToMMo's Library News Timeline access & contact sitemap links Japanese