HPC User Forum

5 August 2024

Agenda

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• HPC Roadmap/Status Update

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• Open Forum

HPC Roadmap

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• Authorization improvements
• Linux Update - Completing
• New Open OnDemand Version/Features
• New ServiceNow Portal for Partner Universities

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Authorization Improvements

A new FreeIPA LDAP service is being developed for the HPC cluster that will replace the local password and group files. Currently password and group files are rebuilt daily at 6:30pm and syncronized across all the cluster nodes. The new service will allow closer to real time updates for adding and removing HPC cluster access for accounts and HPC group membership.

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LDAP service is fully populated with HPC accounts and groups and is being updated as new accounts and projects are added. Continuing work to address performance issues.

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Continuing to debug issues along with Red Hat - primarily performance related issues vs functionality

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Linux 9 Update

CentOS 7.9 reached end of regular support in June 2024

• Security updates underway today are the last updates for CentOS 7.9
• To maintain security compliance will need to move to new Linux version

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All available cluster login and compute nodes have been updated to Red Hat Enterprise Linux (RHEL) 9.2

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VCL HPC CentOS 7.9 image remains available if needed for helping with debugging

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Linux 9 Compilers

On RHEL 9, generally, recommend to use:

GCC – Use the system GCC. It’s version 11.3.1 and it is pretty recent.

Intel compiler/MPI – Use the 2024 version

module load PrgEnv-intel/2024.1.0

OpenMPI – Use the one built on RHEL 9

module load openmpi-gcc/openmpi5.0.3-gcc11.3.1

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Linux 9 Compilers

On RHEL 9, generally, recommend to NOT use:

• Intel compilers older than 2020
• PGI compilers - use Nvidia compilers

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New Open OnDemand

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• Working on a new Open OnDemand server with the latest release
• Will enable support for interactive application execution from Open OnDemand
• R Studio is the first application that will be deployed via Open OnDemand

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New ServiceNow Portal

• Delayed due to staffing challenges
• Initially will provide access to ServiceNow requests and incidents for accounts from partner universities
• Requests for /usr/local/usrapps directories
• Requests for being added to various software groups
• Requests to add/remove accounts from a project
• Requests for sftp access and public key management
• Submitting and monitoring incidents

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Open Forum

• Comments
• Requests
• Questions

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