In mdx II, the Interoperable Node Group, built on VMware ESXi, is provided for interoperability with mdx I. Within the Joint Usage/Research Center for Interdisciplinary Large-scale Information Infrastructures (JHPCN), only the Interoperable Node Group is available for use.
| Interoperable Node Group 6 nodes (43.008 TFLOPS) |
– CPU: 2 × Intel Xeon Platinum 8480+ Processor (2.0 GHz, 56 cores) – Theoretical peak performance (per node): 7.168 TFLOPS -Main memory: 512 GB * Same configuration as the Standard Compute Node Group |
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Unlike the Standard Compute Node Group or GPU Node Group, the Interoperable Node Group does not provide a user portal!
Therefore, the configuration and startup of virtual machines are handled by the system administrators.
Also, please note that the instructions on the Usage Guide page mainly apply to Standard Compute Nodes and GPU Nodes, and cannot be applied to the Interoperable Node Group(JHPCN).
Quick Flow to Start Using the Service
This quick flow provides an overview of the steps required to begin using the service. For detailed procedures and important notes, please refer to the information below.
If you have any questions, please feel free to use our Contact Form or Online User Consultation.
Application for Use
Access to the virtual machine will be via SSH public key authentication.
After submitting your application, please reply to the automatic notification email with your public key file attached.
*Please be sure to include your JHPCN project number in the key file name (e.g., jh26xxxx_id_rsa.pub).
mdx II JHPCN Resource Application Form
*At the time the application is approved, the mdx shared points will be deemed to have been consumed.
*Please complete your application for the use of JHPCN resources for FY2026 by February 2027.
How to Access Virtual Machines
For SSH access, use the private key corresponding to the SSH public key you provided at the time of VM creation.
Below is a basic example of an SSH command:
| $ ssh -i <SSH private key> -l <initial username> <Floating IP of VM> Example) $ ssh -i jh26xxxx_id_rsa -l mdxuser 192.50.2.123 |
* Do not change the IP address configured on the VM; doing so will make it inaccessible.
* On the first connection, when prompted with “Are you sure you want to continue connecting?”, confirm the destination is correct and enter yes.