EXASCALE: HEAD IN THE CLOUDS OR BOTH FEET ON THE GROUND?Bartosz Dobrzelecki, Forkedbranch.euKDM 2016, 27-28.06.2016, Poznań

SCIENTIFIC VS ENGINEERING SIMULATION

Head in the clouds Both feet on the ground

Time variation of the absolute magnetic flux density in a synchornous motor (source: CST AG)

Dark matter layer of the EAGLE simulation (source: The Virgo Consortium)

SCIENTIFIC VS ENGINEERING MINDSETBOUNDARY ELEMENT METHOD FOR ELECTRIC FIELD CALCULATIONS

Head in the clouds Both feet on the ground

▪ We developed new semi-empirical methods – look at our accuracy!

▪ But the accurracy is unparalleled!

▪ But we can’t leave it at ±3% when we can get below ±0.5%!

▪ Yes, nice, but we can’t wait 2 days for the result!

▪ OK, but we know so little about discharge physics that estimating a chance of inception with ±3% is fine for us...

ENGINEERING MINDSET

ENGINEERING MINDSET : ESTIMATION

“Yes, of course duct tape works in a near-vacuum. Duct tape works anywhere. Duct tape is magic and should be worshiped.”

― Andy Weir, The Martian

Watney in the Martian performs estimations in order to survive.

Scientific calculator can still be found on the desk of most simulation engineers.

ENGINEERING SIMULATIONVIRTUAL PROTOTYPING

TYPICAL SIMULATION INFRASTRUCTURE FOR VIRTUAL PROTOTYPING

TYPICAL SIMULATION PROCEDURE

HOW MUCH COMPUTATION?

ENTRY LEVEL HPCBULLX BASED CLUSTERS

High quality package for entry level in-house HPC suitable for engineering companies.

Tested on the job.

bullx Rbullx B500

Air cooling or water-cooled door

High performance interconnect network

File systems and storage bays/solutions

HPC operating envoronment

GPU

BULL SUPERCOMPUTER SUITE

Greatly simplifies deployment, configuration and operation.

Lowers entry barrier for sysadmins.

BENEFITS OF HPC

IS EXASCALE A PRAGMATIC GOAL?

ENTRY LEVEL HPC IS ENOUGH FOR MOST PRODUCT DEVELOPMENT TASKS

CFD (Fluent) FEA (Abaqus)

• Computations on real geometries do not scale well.• Cost of parallel licenses is still prohibitive in many cases.• In-house solvers often need refurbishment to make use of

even the entry level HPC.

source: HPCWire source: ICHEC

WILL ENGINEERING SIMULATION EVER ACHIEVE EXASCALE SCALABILITY?

Will we find out tomorrow?

Towards Exascale Fluid Dynamics Simulations for Industrial Applications

Niclas JanssonKTH Royal Institute of Technology, Sweden

EXASCALE FOR HPC CLOUD

bursting

Many engineering companies will never invest in in-house HPC

BULL EXTREME FACTORY

EXASCALE DATACENTERINFRASTRUCTURE FOR HPC CLOUD

SEQUANA: BUILDING BLOCK OF ANEXASCALE DATA CENTER

Open platform designed for the long-term Integrate current and future technologiesMultiple types of compute nodes (CPUs, GPUs, HPC accelerators)

Scales up to tens of thousands of nodesLarge building blocks to facilitate scaling Embedding the fastest interconnects

Ultra-energy efficientEnhanced DLC

FLEXIBLE ARCHITECTURE SUPPORTING HETEGOGENEITY

KNL Blade

BDW Blade

SKL blade

GPU blade

ARM blade

Knights Landing Blade

Skylake Blade

INDUSTRY 4.0

Massive amounts of data to be integrated and acted upon.

THE EXTRA-LARGE MEMORY SUPER COMPUTER: BULLX S6000 SERIES

2 Haswell EX CPUs 4 Haswell EX CPUs 8 Haswell EX CPUs 16 Haswell EX CPUs

3U Form Factor 6U Form Factor 12U Form Factor 24U Form Factor

Up to 36 cores Up to 72 cores Up to 144 cores Up to 288 cores

Up to 3TB RAM Up to 6TB RAM Up to 12TB RAM Up to 24TB RAM

7 PCI-e Gen3 14 PCI-e Gen3 28 PCI-e Gen3 56 PCI-e Gen3

Active/Passive PS Active/Passive PS Active/Passive PS Active/Passive PS

N.A. HW Partitioning HW Partitioning HW Partitioning

Rear view

BCS2

BCS2

BCS2

BCS2

BCS2

BCS2

BCS2

BCS2

Supports large scale in-memory computations.

Well suited to enable the Industry 4.0 vision.

EXASCALE AND VIRTUAL PROTOTYPING

Head in the clouds

▪ Most solvers used in virtual prototyping do not exascale.

▪ Exascale parallel licenses maycurrently cost exadollars.

▪ Simulation supports estimation in product engineering – there seem to be no grand challenges.

Both feet on the ground

▪ Engineering companies looking for increased compute power may move their simulations directly to the cloud.

▪ Exascale supercomputer may be at the heart of such data center.

▪ Merging BigData and HPC is the way forward in the race for exascale.

Find out more about Atos exascale effort athttp://www.bull.com/extreme_computing

Find out more about streamlining your R&D workflows athttp://forkedbranch.eu