POSTER CONTACT NAME P5286 Nicolas Delbosc: mnnd leeds.ac...

hot aircreated bythe serverscold air

coming fromthe floor vent

air is exitingat the CRAC unit

servers

(and other engineering applications)

MotivationsFluid Simulation

User Inputs(keyboard, mouse, motion sensors...)

BoundaryConditions

FastVisualisation(3D rendering,graphs, VR...)

Coupled Model

We gratefully acknowledge the support of NVIDIA with the donation of the Tesla K40 GPU used forthis research.

Turbulence Model: Smagorinsky LES

Saving Energy in Data Centers Using Real‐Time SimulationN. Delbosc, A. Khan, J.L. Summers1 2 1

1School of Mechanical Engineering, School of Civil Engineering, University of Leeds, UK2

Lattice Boltzmann Method

Context: up to 40% of the energy spentin Data Centres is on cooling.Objective: to develop a real-time indoorairflow simulation tool allowing: optimisation of ventilation system design, control and prediction of thermal loads. Benchmark Data Center

Real‐Time CFD Model

Performances

Results (live demo)

Tricks for the Tesla K40

Other Applications

References

Acknowlegments

CPU

Tesla C2070

Tesla K40

GTX Titan

GTX Titan Z

GTX 780 Ti

440200

192720

10-20

Brix(GTX 760)

7431515

1480740

7861580

5561785

500 1000 1500double precision single precision

disable ECC: (14% faster)

disable GPU boost: (13% faster)

combined speed increase: +27%

microscopicscale

mesoscopicscale

macroscopicscale

LBM Navier‐StokesParticle

Methods

velocity, pressuredistribution functionsparticles position and momentum

(higher is better)MLUPS

12

3

4

5

6

Velocity Temperature

D3Q19 D3Q6

12

3

4

5

6

advection

Boussinesq

Boussinesq forcing term:

7

8 9

10

11

1213

1415

16

17

18

variableIT loadpowers

flow ratestemperatures

...

Optimized implementation graphics processing unit towards real-time fluid simulation. (CAMWA 2013)http://dx.doi.org/10.1016/j.camwa.2013.10.002http://www.efm.leeds.ac.uk/~mnnd/index.php

nvidia-smi -e 0

nvidia-smi -ac 3004,875

The framework can be used for other applications.

example: hospital

CONTACT NAME

Nicolas Delbosc: mnnd@leeds.ac.ukPOSTER

P5286

CATEGORY: COMPUTATIONAL PHYSICS - CP20