[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[ESPResSo-users] different outcomes for CPU and GPU

From: Renáta Tóthová
Subject: [ESPResSo-users] different outcomes for CPU and GPU
Date: Mon, 22 Jun 2015 10:02:37 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.7.0

Hello, Espresso developers,

I am a member of the Cell-in-fluid research group in Slovakia and I have encountered this problem: I have run the simulation in periodic channel with fluid only. There were only bottom and top wall and fluid flowed due to external force in x direction in the channel. In first case, the fluid was computed using CPU - command lbfluid cpu. In second case, the fluid was computed using GPU - command lbfluid gpu. In both cases, there is Poiseuille/parabolic flow in the channel, but the values of velocity differ in the two outputs. The values are from a stable flow, after several thousand integration steps. The GPU calculations run on Nvidia Tesla machine. I have used current espresso master branch from github.

In the attachment, I am sending you the tcl script I have used.
Do you know what could be the issue?

Please, let me know. Thank you.
Have a nice day,

Renata Tothova

Attachment: testCpuGpuFluid.tcl
Description: Text Data

reply via email to

[Prev in Thread] Current Thread [Next in Thread]