Ansys fluent in multi core cpu´s
 

Hi all!,

I´m working with ANSYS FLUENT with an i7 with Windows 7, but I have realised that FLUENT only use one core (13% of CPU). How could I make Fluent use all cores?

Thanks ;)

i have to ask. have you set up the simulation to be solved in parallel?

look at the attached image

Yes, I have done it, but when I select parallel (4 processes) fluent shows a warning message and i though parallel was only for more than one PC´s working in parallel.

In this case, why is the message warning?

can you specify what the message says? in my setup i don't get any and i can select where to run the parallel solution, in my local machine or else.

take a look at the screenshots i have attached.

Do you know if you have the parallel licenses to access additional cores? You will need HPC licenses to do this.

The error says:

Warning: No cached password or password provided. Use pass or cache to provide password

Need I an special license?

Thanks all ;)

It might be a licence issue, but try this, it worked for me on an i7/xeon 64-bit Win 7:

Open command prompt (cmd.exe) - Type CMD in start menu search bar.
In Command Prompt, type: cd (fluent folder path)
e.g.: cd C:\Program Files\ANSYS Inc\v121\fluent\ntbin\win64
Press Enter
It should now say: C:\Program Files\ANSYS Inc\v121\fluent\ntbin\win64>
Type: fluent (dimension)(double precision if wanted) (-t(number of parallel cores to be used))
e.g.: fluent 3ddp -t3
Press Enter
This will make fluent run in 3d mode, with Double Precision, using 3 cores (advised on a 4-core machine so you can still use it for basic tasks during solve.)

See if that works :)

Mpi
 

(Assuming you have the parallel licenses)

Did you install the HPMPI software?

Parallel Fluent
 

I have 32 GB ram, Intel Xeon processor X5660, 2.80 GHz, 12 MB cache, 1333 MHz memory, Six-Core (two processors) and win7 . But I couldn't run fluent in parallel (local Machine). Please help me how to run it?

Hi all,

I have installed Fluent 12 on Windows 7 pro (64 bit).

The machine has following specs:

Intel® Core i7 950 Processor (3,06Ghz - 8 MB)
12 GB DDR3 1600 MHz (3 x 4 GB)

I have tried to open a parallel version of fluent (local Machine). When I want to start fluent I got following error:


-------------------------------------------------

Loading "\VMEERTENS-PC\C$\PROGRA~1\ANSYSI~1\v120\fluent\fluent12.0.16\ lib\fl114-64.dmp"
Done
Welcome to ANSYS FLUENT 12.0.16
Copyright 2009 ANSYS Inc.
All Rights Reserved. Unauthorized use, distribution or duplication
is prohibited. ANSYS and FLUENT are trademarks or registered trademarks
of ANSYS, Inc. or its subsidiaries in the United States or other countries.
Loading "\\VMEERTENS-PC\C$\PROGRA~1\ANSYSI~1\v120\fluent\fluent12.0.16\ lib\flprim1119-64.dmp"
Done.
CX_Client_Register (rpc connect): No such file or directory
Error: There is no active application.
Error Object: (grid-valid?)
version>
Interrupting...
Done.
Error: There is no active application.
Error Object: (grid-valid?)

-------------------------------------------------


I tried the other settings under “parallel settings” but I still got the same error message.

I didn’t install any MPI software because I thought it is already integrated in W7.
But after reading some threads I’m not so sure anymore…

Maybe this has something to do with the Fluent prerequisites I installed the first time? If I remember it well, Fluent installed the C++ 2005 version and asked for a change in the control panel for a SP.

If anyone has an idea for successful parallel settings, please let me know.

This could also just be a licensing/MPI problem, but I’m new in it.

Sincerely

Vincent

I need help in Fluent !
 

I have Tow PC'S 8 Cores each, i Have installed Ansys 14 . Now i'm working with Fluent.
How can i use the the tow PC's parallement to use 16 Cores ?.
Do i need any addition license ?
Please help me ....... Many thank's

Only start Fluent with Win command prompt and enter your correct password !

I haven't been fixing ansys for running with 12 cores,
Have you fixed this problems for 16 cores ? Please share how to fix...
Many thanks !

your license is not right ,you must get a good license:)