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ARCHER2 Weekly Newsletter

By ARCHER2 Service on January 18, 2023

Tags: newsletters 

Porting OptClim Optimisation system to ARCHER2

Online webinar, Wednesday 18th January 2023, 3pm

The webinar describes the porting of software to help researchers to respond to uncertainty in climate and Earth-system models in two ways. Firstly, OptClim software permits researchers to optimise parameters in three prominent earth system models: CESM, MITgcm-based models and UKESM. Secondly we have developed closely-related software for “particle filtering” (PF) in which an ensemble of UKESM runs is used to track historical data.

The webinar will:

  • Explain the rationale for the OPTCLIM and PF software
  • Outline its porting to ARCHER2 and the extensions that tailored the system for MITgcm, CESM and UKESM models.
  • Introduce GeosMeta, a system previously developed for capturing metadata and provenance, and explain how it was used with UKESM and its own workflow server as a message-passing service.
  • Orient potential users.

More details and join link

This online session is open to all.

OPTIMET: an HPC Code for Modelling Nonlinear Optical Response of Arbitrary Clusters of Nanoparticles on ARCHER2

Online webinar, Wednesday 25th January 2023, 3pm

Computational modelling of interaction of light with clusters of nanoparticles is a notoriously challenging problem, chiefly because of the vectorial nature of the electromagnetic field, the existence of multiple scales at which the field must be described, such as in the near-, intermediate-, and far-field regions, the large parameter space needed to describe the nanoparticles in the cluster, and the complex, multi-scattering processes undergone by optical waves propagating within the nanoparticle cluster.

This computational complexity is further enhanced if nonlinear optical processes are considered.

In this talk, I will briefly introduce the numerical method used to model computationally such complex interactions, the so-called multiple-scattering matrix (MSM) method, and an HPC code (OPTIMET), which has been developed with eCSE support and implements the MSM method.

In particular, I will present the main structure of the code, describe the main steps of a numerical simulation, and discuss its scaling properties with respect to the number of nanoparticles in the cluster and number of cores as established on ARCHER2.

Several examples of numerical simulations of the linear and nonlinear optical response of certain nanoparticle clusters will be presented, too.

More details an join link : https://www.archer2.ac.uk/training/courses/230125-optimet-vt/

This online session is open to all.

International HPC Summer School 2023 – Atlanta, Georgia, U.S., July 9-14, 2023

Graduate students and postdoctoral scholars from institutions in Canada, Europe, Japan, Australia and the United States are invited to apply for the 12th International High Performance Computing (HPC) Summer School, to be held on July 9-14, 2023 in Atlanta, Georgia, USA, hosted by the Extreme Science and Engineering Discovery Environment.

More details on the website.

The deadline for registration is January 31 2023.

ARCHER2 9th Embedded CSE (eCSE) call

We are very pleased to announce that the 9th ARCHER2 eCSE call (ARCHER2-eCSE09) is now open for proposals. The deadline for submitting documents for technical evaluation is 16:00 on 21st February 2023 with the final deadline for proposal submission being 16:00 on 14th March 2023.

Embedded CSE (eCSE) support provides funding for RSEs (Research Software Engineers, PDRAs or equivalent) to carry out software development of codes to be run on the ARCHER2 system.

Projects can be requested for up to 18 person months of effort per project. We hope that this recent increase in the effort available per project will provide researchers with the opportunity to carry out more in depth improvements to software and to allow for an increase in the scope of a project’s objectives. There is flexibility in the way the effort is requested. For example, a project may have more than one person working on it or the effort could be spread over a greater number of calendar months, i.e. a staff member could work on the project at less than 100% alongside other commitments or it could be worked on by a staff member who doesn’t work full time. Please just get in contact with the ARCHER2 Service Desk if you wish to discuss possible scenarios.

The code(s) may already be running on ARCHER2, where the aim is to improve performance or scalability, to add functionality or to improve the usability and maintainability, or the code(s) may be running elsewhere (e.g. on a Tier-2 system) and the proposal could be to bring the software up to a level where it would perform well on ARCHER2.

For this call, software which results in research which is within the remit of EPSRC is eligible. Funding can be requested for staff located at the institution of the PI, third parties, or can include staff from the centralised CSE support team or a mixture of the above.

More details of how to apply are available by following the link to the eCSE calls page together with details of the application and review process, assessment criteria eligibility, etc.

eCSE call dates

Deadline for submitting eCSE09 documents for technical evaluation: 16:00 on Tuesday 21st February 2023

Deadline for final eCSE09 submission: 16:00 Tuesday 14th March 2023

A recent webinar includes a walk through of the submission of a proposal.

Recently added Known Issues

The “Known Issues” page of the ARCHER2 Documentation https://docs.archer2.ac.uk/known-issues/ lists all current open known issues including a description of the issue, its symptoms and any work-arounds.

  • No recent issues

Upcoming ARCHER2 Training

Further details of upcoming training

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Recordings of past courses and virtual tutorials