HPC research

Global or local - which is best?

Author: Adrian Jackson
Posted: 9 Oct 2019 | 17:30

Selfish performance

Sharing of resources has challenges for the performance and scaling of large parallel applications. In the NEXTGenIO project we have been focusing specifically on I/O and data management/storage costs, working from the realisation that current filesystems will struggle to efficiently load and store data from millions of processes or tasks all requesting different data sets or bits of information.

Optimizing CPU oversubscribed reductions

Author: Guest blogger
Posted: 6 Sep 2019 | 11:17

Gladys Utrera was an HPC Europa3 visitor to EPCC from 1st of July to the 3rd of August 2019. She has been an HPC Europa visitor before - in this brief blog article she tells us what she did this time.

Hi! My name is Gladys Utrera and I currently work at the Computer Architecture Department of the Universitat Politècnica de Catalunya in Barcelona, Spain. There I combine teaching of parallel computing and operating systems subjects with research on HPC topics and parallel programming models. Thanks to the HPC-Europa3 programme I could spend four weeks at the EPCC in the University of Edinburgh with my host Mark Bull who is a very well-known expert in my research areas. This is my third research visit to EPCC, and the second as an HPC-Europa visitor. 

My research involves executions on large multi-core node clusters. In addition, performance evaluations on machines with different architectures characteristics like ARCHER and Cirrus, enrich my results greatly. 

Benchmarking MPI implementations on ARM

Author: Nick Brown
Posted: 30 Aug 2019 | 11:32

The recent installation of Fulhame, the ARM HPC machine based here in EPCC as part of the Catalyst UK programme, raises plenty of interesting opportunities for exploring the HPC software ecosystem for ARM. One such aspect is the relative performance of different MPI implementations on these machines and this is what I was talking about last week at the MVAPICH User Group (MUG) workshop.

My HPC-Europa visit to Cambridge

Author: Guest blogger
Posted: 29 Jul 2019 | 16:27

Hi! My name is Concetta Cozza. I am a PhD student in Life Science at University ‘Magna Graecia’ of Catanzaro. This summer I visited the research group of Professor Michele Vendruscolo based at the University of Cambridge for three months with the HPC-Europa3 transnational access programme.

PRACE Summer of HPC 2019

Author: Mario Antonioletti
Posted: 29 Jul 2019 | 14:55

PRACE Summer of HPC (SoHPC) offers summer placements at HPC centres across Europe to late-stage undergraduates and/or Masters students. Up to twenty top applicants from across Europe spend two months working on projects related to PRACE technical or industrial work. Here are the three SoHPC visitors who are collaborating on projects with EPCC staff. 

Evaluation of a phase diagram with a novel technique in an HPC-Europa3 funded collaboration

Author: Guest blogger
Posted: 19 Jul 2019 | 09:22

György Hantal was an HPC-Europa3 visitor from 18th March to 17th May 2019.

I am György Hantal (pictured here with Durham castle in the background), a postdoctoral researcher from the University of Vienna. I was an HPC-Europa3 visitor for two months, hosted by Dr. Lívia Bartók-Pártay at the University of Reading's Department of Chemistry and supported by EPCC in Edinburgh.

Preparing programming models for Exascale

Author: Daniel Holmes
Posted: 18 Jun 2019 | 15:03

To make future heterogeneous systems easier to use efficiently, the EPiGRAM-HS project is improving and extending existing programming models with Exascale potential. We are working with the MPI and GASPI programming models primarily, but also applying our changes to HPC applications like Nek5000, OpenIFS and iPIC3D, and AI frameworks like TensorFlow and Caffe. We expect the trend towards specialisation of hardware will continue and therefore large machines will become more and more heterogeneous.

NEXTGenIO at ISC High Performance 2019

Author: Catherine Inglis
Posted: 6 Jun 2019 | 14:34

The highly successful NEXTGenIO project is now drawing to a close after nearly four years. EPCC colleagues will be at ISC19 presenting the results of the project at a booth presentation, a BoF, and a workshop presentation. Come along and find out more!

Launch of EPCC’s Women in HPC UK chapter

Author: Lorna Smith
Posted: 28 May 2019 | 13:58

Women in HPC (WHPC) was set up in 2013 to tackle the problem of diversity in HPC through research and education. EPCC initiated the WHPC programme and EPSRC supported the initiative. We were therefore very pleased to be accepted as one of the first WHPC chapters, developing a chapter that encompasses all of the UK. We held a successful launch event in May, with attendees from different organisation from across the UK.

HPC Certification Programme: the HPC environment survey

Author: Weronika Filinger
Posted: 26 Apr 2019 | 13:31

We are embarking on a survey of the HPC environment and would appreciate your input! Jean-Thomas Acquaviva, DDN Storage, explains the background below.

Supercomputers are helping us to solve the world greatest challenges but who is helping us to harness the computational power of supercomputers?

The HPC Certification Forum is a community effort that aims to provide an international certification programme for the skills needed by practitioners  to harness supercomputers. It aims to clearly categorise, define, and examine competencies, which will be beneficial to all stake-holders involved in training and education. To make this effort relevant to the whole HPC community, a number of online surveys and polls will be created to capture and estimate the importance of the various tools, technologies, and skills expected from HPC practitioners. 

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