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Primeur weekly 2017-07-24

Focus

20th Birthday celebrating OpenMP still welcoming new members ...

Fujitsu's processor roadmap is hitting new targets for Deep Learning ...

Focus on Europe

New FPGA programming method delivers five times more computing power ...

Gazprom Neft to utilise capacity at the St Petersburg Polytechnic University supercomputer ...

Tenfold connectivity increase between Ukraine and European research and education network ...

Newly improved Brain Simulation Platform now online ...

Joeri van Leeuwen received a grant and in-kind expertise from the eScience Center for his astronomy project AA-ALERT ...

Middleware

Bright Computing and Brazil-based AMT sign partnership agreement ...

Hardware

7th International Women in HPC workshop ...

IBM scientists observe elusive gravitational effect in solid-state physics ...

New Supermicro Rack Scale Design (RSD) supports high-density, high-performance pooled NVMe storage ...

Inspur announced the new M5 series servers to get businesses ready for the new era of intelligent computing ...

Women, leadership and Flash - Panel and networking event ...

Applications

3D models help scientists gauge flood impact ...

Pulses of electrons manipulate nanomagnets and store information ...

Flashes of light on the dark matter ...

Titan simulations show importance of close 2-way coupling between human and Earth systems ...

A firefly's flash inspires new nanolaser light ...

Simulation reveals universal signature of chaos in ultracold reactions ...

Massive simulation shows HIV capsid interacting with its environment ...

ANSYS, Saudi Aramco and KAUST shatter supercomputing record ...

Scientists use "Piz Daint" simulations to track heavy summer precipitation from the Mediterranean ...

Fernanda Foertter elected SIG HPC Education Vice Chair ...

The Cloud

IBM expands global Cloud data centre presence with four new facilities ...

The Cloud comes to you: AT&T to power self-driving cars, AR/VR and other future 5G applications through edge computing ...

Teradata acquires San Diego-based start-up StackIQ to strengthen Teradata Everywhere and IntelliCloud capabilities ...

IBM mainframe ushers in new era of data protection ...

Solarflare lets server racks match connectivity of a human neuron ...

New high speed interface connects IBM Z to IBM storage systems ...

Oracle significantly expands Cloud at Customer with PaaS and SaaS services to help customers in their journey to the Cloud ...

20th Birthday celebrating OpenMP still welcoming new members


19 Jun 2017 Frankfurt - At the ISC 2017 Conference in Frankfurt, Germany,Primeur Magazinehad the opportunity to talk with Michael Klemm, CEO of the OpenMP Architectural Review Board (ARB), at the occasion of the 20th anniversary of OpenMP. Michael Klemm is leading the ARB members, influencing the business decisions of the OpenMP Corporation. This is the entity that owns the OpenMP trademark, the OpenMP specification, and the whole process around defining the OpenMP language. OpenMP is about parallel processing and about making parallel processing easier.

OpenMP is a major player in HPC. It is a shared memory threading model that complements and blends with MPI message parsing. OpenMP is celebrating its 20th birthday and looks back on a good history of enabling HPC in two decades. OpenMP differs from MPI in the sense that it is on the cluster level. It originated from distributed memory and message parsing and now has some form of shared memory support as well. Traditionally, OpenMP was the model to do the threading within the node and have MPI on top of that, to communicate with other cluster nodes.

Currently, OpenMP 4.5 is the latest specification. Last year, OpenMP released a technical report as a kind of alpha release of the upcoming OpenMP 5.0 specification. OpenMP is planning to have another technical report at the Supercomputing Conference in November 2017, which will be the better release. In Spring 2018, OpenMP is aiming to launch what is called the "Public Comment Period". OpenMP by then will have the ready-to-be-released specification and will ask the community for feedback, for concerns they might have with the new version and whatever errors and bugs they may find. After this process, in 2018, OpenMP is going to release, at Supercomputing Conference as well, the 5.0 specification. This is going to be the next major piece in the OpenMP history.

OpenMP is now working on a tools' interface. This is already in the alpha version where it is being finalized. You can have performance tools and have a well-defined interface into the OpenMP implementation, so that any OpenMP tool can talk to any OpenMP implementation and provide some context information about the performance behaviour of the application. OpenMP is also working on a debugger interface. This is basically the same idea, but now for correctness tools. In addition, there are lots of refinements of existing features. OpenMP is working on rebasing the C++ language to be C++14. Right now, it is C++89. That is a major lifting to ensure that OpenMP is still compatible with the latest developments of the languages that it supports.

OpenMP also supports Fortran 2003. Most of the features OpenMP is working on are for the 2008 support. Michael Klemm and his team are trying to evolve OpenMP along those lines as well. There are also additional features in terms of tasking support. The developers added already in the alpha release a support for task reduction so that you can have a full task tree unfolding and then do a global aggregation of partial results into a global result. This is something that OpenMP has had for two decades in the work sharing construct but which was missing from the tasking construct.

A key aspect of OpenMP always is to make it a good language that is expressive and capable of expressing what you need in your applications. OpenMP is trying to follow along, not only with the hardware trends to make sure that OpenMP is the programming model of choice to program the latest and greatest but also future hardware, but also with trends of more complexity in terms of what the application wants from the programming model.

OpenMP tries to stay hardware-agnostic. The team doesn't want to have OpenMP for some specific hardware because when the trend is over, OpenMP would become irrelevant. The team in OpenMP 4.0 introduced the offload model, meant to support anything that takes data or some crunching on it and send it back to the host. That model already fits FPGAs, GPUs, coprocessors, and whatever is coming. The only question is how you can map the baseline code, like Fortran code, to the underlying hardware. OpenMP itself doesn't make any assumptions or any big assumptions about the underlying hardware. You may restrict yourself to a subset of Fortran or C++ but from an OpenMP perspective, the goal is to try and be as agnostic as possible.

Currently, there are 29 ARB members within OpenMP, which are the contributing organisations. OpenMP has several vendors - big names like IBM, NVIDIA, Intel, and ARM, just to name a few because there are much more - and there are big user organisations like Lawrence Livermore, Sandia, Oak Ridge National Laboratories, and Barcelona Supercomputing Center, that also contribute from a research perspective. Overall, the involvement is about 50 to 60 people, individuals who are coming from these institutions to support the language development.

OpenMP is an open organisation that welcomes feedback. OpenMP is looking for new members. If there is an institution out there that wants to be more involved with OpenMP, the team is happy to talk to them on different levels. They can come to OpenMP and provide feedback. There are conferences and workshops. There is OpenMPCon, which is the users' community conference, in conjunction with IWOMP, the international workshop on OpenMP, which is the research conference with scientific papers. You can engage with OpenMP through those channels.

There is an OpenMP website where you can find information and also send contact information so that the team can follow up, just in case somebody is interested in joining as a member. The next conference is starting on 18 September 2017 at Stony Brook University, New York. IWOMP traditionally is on a three-year traveling cadence, visiting Asia, Europe and America. OpenMPCon follows along. This year, it is America.

Primeur Magazinehoped to see Michael Klemm in 20 years from now, celebrating the 40th anniversary. Michael Klemm hoped to see exascale by then.

Ad Emmen

Back to Table of contents

Primeur weekly 2017-07-24

Focus

20th Birthday celebrating OpenMP still welcoming new members ...

Fujitsu's processor roadmap is hitting new targets for Deep Learning ...

Focus on Europe

New FPGA programming method delivers five times more computing power ...

Gazprom Neft to utilise capacity at the St Petersburg Polytechnic University supercomputer ...

Tenfold connectivity increase between Ukraine and European research and education network ...

Newly improved Brain Simulation Platform now online ...

Joeri van Leeuwen received a grant and in-kind expertise from the eScience Center for his astronomy project AA-ALERT ...

Middleware

Bright Computing and Brazil-based AMT sign partnership agreement ...

Hardware

7th International Women in HPC workshop ...

IBM scientists observe elusive gravitational effect in solid-state physics ...

New Supermicro Rack Scale Design (RSD) supports high-density, high-performance pooled NVMe storage ...

Inspur announced the new M5 series servers to get businesses ready for the new era of intelligent computing ...

Women, leadership and Flash - Panel and networking event ...

Applications

3D models help scientists gauge flood impact ...

Pulses of electrons manipulate nanomagnets and store information ...

Flashes of light on the dark matter ...

Titan simulations show importance of close 2-way coupling between human and Earth systems ...

A firefly's flash inspires new nanolaser light ...

Simulation reveals universal signature of chaos in ultracold reactions ...

Massive simulation shows HIV capsid interacting with its environment ...

ANSYS, Saudi Aramco and KAUST shatter supercomputing record ...

Scientists use "Piz Daint" simulations to track heavy summer precipitation from the Mediterranean ...

Fernanda Foertter elected SIG HPC Education Vice Chair ...

The Cloud

IBM expands global Cloud data centre presence with four new facilities ...

The Cloud comes to you: AT&T to power self-driving cars, AR/VR and other future 5G applications through edge computing ...

Teradata acquires San Diego-based start-up StackIQ to strengthen Teradata Everywhere and IntelliCloud capabilities ...

IBM mainframe ushers in new era of data protection ...

Solarflare lets server racks match connectivity of a human neuron ...

New high speed interface connects IBM Z to IBM storage systems ...

Oracle significantly expands Cloud at Customer with PaaS and SaaS services to help customers in their journey to the Cloud ...