HPC

HPC Community Survey

Author: Guest blogger
Posted: 30 Mar 2016 | 17:23

This blog article comes from one of our current Phd students: Athina Frantzana, who is researching the obstacles facing women in the HPC community, and how equality can be improved.

The under-representation of women in STEM workforces has been a widely discussed subject in recent years. However, the recording and analysis of data regarding the gender balance of HPC remains rare.

Our study is a preliminary analysis of workforce and research participation in HPC, and aims to quantify the current level of representation of women in HPC and to provide a baseline for evaluating possible reasons and suggesting ways for future changes to the demographics.

Debugging in 5D

Author: Adrian Jackson
Posted: 24 Feb 2016 | 16:41

Or why debugging is hard and parallel debugging doubly so

Computing bug: Grace Hopper's famous bug found in 1947 in a relay in the Mark II computer, taped it to the operations logbook with the annotation "First actual case of bug being found". Image courtesy of the Naval Surface Warfare Center, Dahlgren, VA., 1988. - U.S. Naval Historical Center Online Library Photograph

Debugging programs is hard. I give a lecture on debugging for the Programming Skills module of EPCC's MScs in HPC and HPC with Data Science where we try to point out common programming mistakes, programming strategies for making bugs less likely, and the skills and tools required for investigating, identifying, and fixing bugs.

HPC-CORE simulation software workshop

Author: Adrian Jackson
Posted: 31 Jan 2016 | 23:07
 
Tidal simulation

Lancaster University, 7-8 April 2016

The programme for the HPC-CORE (High Performance Computing-based Computational fluid dynamics for Offshore Renewable Energy) workshop has now been published. This event brings together scientific specialists from Engineering, Atmospheric and Environmental Sciences, and HPC experts to discuss the state of the art for simulation software, and the leading-edge simulations being undertaken with such software.

Fortissimo Marketplace goes public

Author: Mark Sawyer
Posted: 22 Sep 2015 | 15:48

The Fortissimo Marketplace is now open for business.

Fortissmo lowers the barriers for industrial users to access HPC-based simulation by offering the benefits of the cloud computing model (such as pay-per-use), together with support for first time users. Making HPC simulation more accessible to SMEs will increase their competitiveness - one of the key goals of the I4MS programme that supports Fortissimo.

EPCC Roadshow: Big Data and HPC for Life Sciences and Healthcare

Author: George Graham
Posted: 16 Sep 2015 | 15:40

During August and September we ran a series of seminar events across Scotland, in collaboration with three major actors in the Scottish life science sector: BioCity, BioQuarter and BioDundee. 

If you weren’t lucky enough to come to one of our seminars (and the complementary lunch) on the application of HPC and Big Data in life sciences then you might want to catch up by reading the associated case study.

HPC's role in Data Science

Author: Adam Carter
Posted: 12 Sep 2015 | 10:01

I was among those presenting at EPCC's recent Big Data seminars at Edinburgh BioQuarter and BioDundee. Both events provided a good opportunity for me to talk to people about their Big Data problems and their views on what Big Data means to them.

Big Data: What's wrong with HPC?

Author: Adrian Jackson
Posted: 3 Sep 2015 | 17:55

Big Data vs HPC

Whilst I was writing my talk for last week's How to Make Big Data work for your business seminar at Edinburgh BioQuarter, it occurred to me that the way computational simulation codes have evolved over the last 40 years has really been a response to big data issues. 

HPCG: benchmarking supercomputers

Author: Adrian Jackson
Posted: 30 Jul 2015 | 14:40

HPCG

The LINPACK library (often known as HPL) has been used to benchmark large-scale computers for over 20 years, with the results being published in the Top500 list. But does it accurately reflect the performance of real applications?

ParCo Symposium on Xeon Phi experiences

Author: Adrian Jackson
Posted: 20 Jul 2015 | 17:12

ParCo Symposium

Experiences of porting and optimising code for Xeon Phi processors

EPCC is jointly organising a symposium at the ParCo conference on experiences from those working on porting and optimising codes for this architecture about the challenges and successes they have experienced when working with the Xeon Phi, and how these also apply to standard parallel computing hardware.

Day 3 of optimising for the Xeon Phi, moving on to vectorisation

Author: Adrian Jackson
Posted: 11 Jun 2015 | 16:01

Moving from OpenMP to vectorisation and MPI

Reality hit home a bit on the third day of our intensive week working with Colfax to optimise codes for the Xeon Phi.

After further implementation and analysis work it appears that the removal of the allocation and deallocation calls from some of the low level routines in CP2K will improve the OpenMP performance on Xeon and Xeon Phi, but only because there is an issue with the Intel compiler that is causing poor performance. The optimisation can see a reduction in runtime of around 20-30% for the OpenMP code, but only with versions 15 and 16 of the Intel compiler, on v14 there is a much smaller performance improvement.

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