Changes to the ASPIRE 2A+ System from 2 Jun 2025

Dear ASPIRE2A+ Users,
 
We would like to inform you of upcoming changes to the ASPIRE 2A+ system, effective 2 June 2025. These updates are part of our ongoing efforts to improve resource management, performance monitoring, and user experience.
 
What’s Changing?
 
1.PBS Queue Structure Update
Starting 2 June 2025, all jobs submitted to the normal queue will be automatically routed to one of the following new queues based on the job’s characteristics:
  • aidev Queue – For development and interactive workloads
    • Max Walltime: 12 hours
    • GPU Limit: Up to 8 GPUs
    • Ideal for: Testing, debugging, and short interactive sessions.
  • aiq1 Queue – For small batch jobs
    • Max Walltime: 24 hours
    • GPU Limit: Up to 7 GPUs
    • Ideal for: Short production runs and low-GPU batch jobs.
  • aiq2 Queue – For large batch jobs
    • Max Walltime: 120 hours (5 days)
    • GPU Requirement: Minimum of 8 GPUs
    • Ideal for: Long-running, resource-intensive jobs.
 
What You Need to Do:
Continue submitting jobs to the normal queue as usual. The system will automatically route your job to the appropriate queue based on the requested GPU count and walltime. We encourage reviewing your job scripts to ensure that they align with the new queue definitions.
 
2.Change in dcgmi Access Permissions
From 2 June 2025, the dcgmi (NVIDIA Data Center GPU Manager) tool will no longer be executable by regular users.
 
 
This change is necessary to ensure the accuracy of system-wide, system-level GPU performance monitoring. If your workflows rely on dcgmi, please contact the our Helpdesk for alternative solutions or assistance.
 
Summary of Actions
  1. Review and adjust your job scripts to align with the new queue definitions.
  2. Avoid using dcgmi in user applications or scripts.
  3. Reach out to the Helpdesk if you need help adapting to these changes.
 
Please contact our Helpdesk via the Service Desk Portal or email us at [email protected] if you have any questions.
 
Thank you.
 
Warm regards,
The NSCC Team

[Follow-up for NSCC VPN Users] Update to NSCC VPN Server URL – Effective from 9 May 2025, 6:00 PM

Dear NSCC Users,
 
Please be informed that the NSCC VPN server URL for accessing NSCC services has been updated.
 
New VPN Server URL: vpn1.nscc.sg
Effective Date and Time: 9 May 2025, 6:00 PM
 
We advise all users to update their VPN configuration to use the new URL as soon as possible to ensure smooth access to NSCC resources. The previous VPN server URL will be phased out soon.
 
For assistance with updating your VPN settings, please refer to the relevant guide below:
 
Alternatively, you may contact the NSCC Helpdesk via the Service Desk Portal or email us at [email protected] if you have any questions.
 
Thank you for your attention and cooperation.
 
Warm regards,
The NSCC Team 

[Completed] Urgent Scheduled Maintenance for NSCC VPN Service on 9 May 2025, 3PM to 6PM

Dear NSCC Users,
 
We are pleased to announce that the urgent scheduled system maintenance on the NSCC VPN Service has been completed.
 
Impact to NSCC VPN Users:
  • There is a change to the VPN server URL for users accessing the HPC system. Kindly refer to the follow-up email for more information.

    Should you have any questions or need assistance, please contact our Helpdesk via the Service Desk Portal or email us at [email protected] if you have any questions.

    Thank you for your understanding and patience.

    Warm regards,
    The NSCC Team

    Urgent Scheduled Maintenance for NSCC VPN Service on 9 May 2025, 3PM to 6PM

    Dear NSCC Users,

    We wish to inform you of an upcoming urgent scheduled system maintenance for NSCC VPN Service to enhance its long-term reliability, uptime, and stability.

    Maintenance Details:

    • Start: 9 May 2025 (Monday), 3:00 PM SGT
    • End: 9 May 2025 (Monday), 6:00 PM SGT
    • Duration: 3 hours

    Purpose:

    • To perform SSL Certificate renewal on NSCC VPN Server.

    Impact During the Maintenance Period:

    • During this period, VPN users may experience slight disruption on the NSCC VPN connection.

    We apologise for any inconvenience this may cause and thank you for your understanding. Should you have any questions or need assistance, please contact our Helpdesk via the Service Desk Portal or email us at [email protected] if you have any questions.

    Thank you for your understanding and patience.

    Warm regards,
    The NSCC Team