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Parallel computing on a personal workstation

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Old   January 6, 2014, 14:10
Default Parallel computing on a personal workstation
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YunJi Choi
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Hi folks,

I have been trying to initiate parallel computing on my personal workstation for awhile, I am not sure if I am doing things right as I am getting some concerning error messages. To give you a background, Star CCM+ is installed on my machine (not on a network drive), I have total four cores and five research license allocated just for my use.

Below is the error message I get when I initiate the parallel computing using the load simulation window;

Starting local server: starccm+ -server -np 4 -mpidriver platform "Y:\\Star_ccm\\output_file\\10_5_CFD_paper\\7_a\\N ew Folder\\simulation5_finer_mesh_Copy@160.sim"
WARNING: No cached password or password provided.
use '-pass' or '-cache' to provide password
Platform-MPI licensed for CD-adapco.
MPI Distribution : Platform Computing MPI-8.1.1.0
Host 0 -- localhost -- Ranks 0-3
Process rank 0 localhost 6044
Total number of processes : 4

STAR-CCM+ 7.04.006 (win64/intel11.1)
License version: 28 March 2012
Required feature version set to 2012.06 or later
Checking license file: 1713@---*
Checking license file: 27000@---*
Unable to list features for license file 27000@---*
Checking license file: 29001@---*
Unable to list features for license file 29001@---*
Checking license file: 28000@---*
Unable to list features for license file 28000@---*
Checking license file: 2100@---*
Unable to list features for license file 2100@---*
Checking license file: 7790@---*
Unable to list features for license file 7790@---*
1 copy of ccmpsuite checked out from 1713@---*
Feature ccmpsuite expires in 183 days

Server::start -host owen233-03:47828
Loading simulation database: Y:\Star_ccm\output_file\10_5_CFD_paper\7_a\New Folder\simulation5_finer_mesh_Copy@160.sim
Loading module: StarMeshing
Loading module: MeshingSurfaceRepair
Loading module: MeshingPipeline
Loading module: StarDualMesher
Loading module: StarResurfacer
Loading module: MetricsModel
Loading module: MotionModel
Loading module: MaterialModel
Loading module: VofModel
Loading module: UserDefinedEos
Loading module: StarSweptMesher
Simulation database saved by:
STAR-CCM+ 7.04.006 (win64/intel11.1) Fri May 25 16:02:30 UTC 2012 Np=4
Loading into:
STAR-CCM+ 7.04.006 (win64/intel11.1) Fri May 25 16:02:30 UTC 2012 Np=4
Simulation database load completed.
Started default macro:
C:\Users\choiyun\AppData\Local\CD-adapco\STAR-CCM+ 7.04.006\var\journal\star8840767282395412608.java
Loading/configuring connectivity (old|new partitions: 4|4)
3 copies of ccmpsuite checked out from 1713@ ---

*I have took server name off of the code.

Reading this error message, my understanding is that (1) I am only able to check out one license for this simulation. Or, could it be that (2) I am only checking out 3 copies of ccmpsuite instead of four that I need. From what I know, unless I have a power session license, I have to have the same number of licenses as number of cores I intend to use. Is this correct? Lastly, it buggs me that it says WARNING: no cached password or password provided. (3) Is this an necessary information running parallel computing in one workstation? if it is, why would my CPU usage be 100% (which indicates that my cores are passing messages to each other without the MPI password)?

I am wondering if anyone else had a similar messages before? I would greatly appreciate your help! I am not sure if I am doing things right, is my magic parallel button working? how could I check?

Last edited by choiyun; January 6, 2014 at 16:32.
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Old   January 6, 2014, 21:12
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DSK
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Are you able to run the simulation without any problem in serial or using just 1 core?

What kind of license do you have? Academic or commercial? You are right that you have to have the same number of licenses as the number of cores you want the simulation to run on, unless you have a power session license. Do you know how many licenses you have?
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Old   January 7, 2014, 06:49
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Oliver Lauer
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Honestly, for me everything looks fine so far.

The client takes the first license at the very beginning (after some error messages finding the right license server).
Afterwards the server takes the remaining three licenses for starting the parallel calculation.

Therefore at least it seems not to be a licensing problem.

I am not sure about running parallel in Windows as we use Linux, but do you see any other error messages?
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Old   January 7, 2014, 17:10
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YunJi Choi
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Yes, I am running it just fine with my network drive. I just want to use my workstation with four cores to speed up my simulation!

I have five commercial license, it is not power session though.

Thank you!
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Old   January 7, 2014, 17:14
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YunJi Choi
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I see, so the error messages were just to find the right license server. I am able to check out four ccmpsuite at the moment (four core computer). This solves all my problems and suspicions.

Thank you so much olauer!
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