[santoshgoku]

Hii,

I am building a 4 node compute cluster for running Fluent using the Windows HPC 2008 software. I am absolutely new to this and had few questions.

1. In the Fluent Launcher, it asks for the Machine List. What is the format of that?
2. I have created a head node, and a compute node (checking for 2 nodes now). When I start Fluent Launcher and input the parameters and try Launching it, no connection takes place. It does show that it is receiving data from the other computer in the Networking box, but it is not getting reflected in Fluent.

Please help me with this, I will come up with more questions once these steps are clear.

Thanks a lot
Santosh

[Jame]

first you must sure that these computers can visit each other in network neiborhood

[tomtomdub]

Hi,

Have you looked at the Fluent guide for HPCS 2008 ?
"Configuring and Launching FLUENT 12.0.16 on Microsoft HPC 2008" http://www.fluentusers.com/support/i...nfaq/hpc12.htm

Did you tryed to passed the diagnostics from HPC Server ?

By the way, with the fluent launcher you shouldn't have to give him a node list, the HPCS scheduler will provide that to Fluent.

Best regards, Tom

[santoshgoku]

No, I do not have that. My institute did not allow access to that website, maybe I will ask them.

If you have a copy, could you please send me.

Thanks a lot

[santoshgoku]

Bump.. Please help.

[santoshgoku]

Please help.

Originally Posted by santoshgoku

Hii,

I am building a 4 node compute cluster for running Fluent using the Windows HPC 2008 software. I am absolutely new to this and had few questions.

1. In the Fluent Launcher, it asks for the Machine List. What is the format of that?
2. I have created a head node, and a compute node (checking for 2 nodes now). When I start Fluent Launcher and input the parameters and try Launching it, no connection takes place. It does show that it is receiving data from the other computer in the Networking box, but it is not getting reflected in Fluent.

Please help me with this, I will come up with more questions once these steps are clear.

Thanks a lot
Santosh

[elbasharat]

Hey... tell me your problem again. i think I can resolve it....


Martin ))

[santoshgoku]

Thanks for posting Martin. But I could solve it. Now set up a 4 node private cluster for Fluent simulations..

[elbasharat]

ok Good ))... Good luck man. I have worked on linux and windows both of them.

[santoshgoku]

Martin,

I had one doubt though. I had to install Fluent on all the 4 nodes, as the MPICH2 package was needed. Is there any other way to do that without installing Fluent in all the machines?

Thank you.

[elbasharat]

Dear !

as MPICH2 (Message passing interface)is the best network protocol or software like for good communication and maximum processor performance as well as memory.

tell me in detail you need to install mpich2 or what else you want?

[santoshgoku]

Martin,

Sorry, you didn't get my question.

In order to run Fluent in parallel, I am using mpich2 as the MPI Architecture.

Now, the Fluent in installed on my Head Node, and all the compute nodes are connected to the Head Node.

Now I am running Parallel-Fluent using the Fluent Launcher. While Launching, it gives an error, MPICH2 not found on the compute nodes.

Hence, I install Fluent in each one of them, and run it again, and now it works.

So, my question is, is it possible to run Parallel -Fluent without installing Fluent in all the compute nodes? If yes, then where can I find the MPICH2 package for the particular Fluent version.

Thank you

[elbasharat]

yeah. you can!

share the head node fluent folder and check if it is accessing from all nodes. then in this share folder of fluent find the multiport folder and see there mpi folder. there is a file of smpd and other files also, copy all files in your system32 or syswow64 (in case of 64 bit) folder.

go to command line and install smpd service by typing

smpd -install

you have to install this service in all your nodes and there is also a file of cluster manager where you can see all your nodes and head node are online highlighted by green line. so

have you got it?

[santoshgoku]

Wow, thanks a lot. Got it perfectly well. I had installed smpd in all the other systems manually after Fluent installation. This idea din't strike me earlier.

Thanks again..

[elbasharat]

ook... good luck friend. tell you have you ever worked on ansys 12 whether on linux or windows HPC ?

[santoshgoku]

No never. I am working on Fluent 6.3 version.

[lalit kumar]

Hi all,
Can any one tell me how to run parallel fluent on 16 processors 2 node cluster using mpi command. I have 8 processors on each node.
thanks frnds

[elbasharat]

first tell me your scenario ...

I mean.. which version of Ansys you are using and what you want to do exactly ?

[m2montazari]

hi all,
I had a question which I cant find any answer in fluent userguide or other helps.
I want to have fluent in parallel mode on some nodes(and each node has some cpu cores) but nodes dont have same operating system. some of them have linux amd64 and some have win64. I dont know if I can spawn nodes or not; and if I can, how should be the machine list; should linux systems and windows systems have same username and password to do that or not?

thsnks for any help

[cesarcg]

Originally Posted by elbasharat

ook... good luck friend. tell you have you ever worked on ansys 12 whether on linux or windows HPC ?

Hi Martin,

I am running Fluent 14 on 2 nodes using Windows 7. I first did a network of these 2 computers; then I set up Fluent and Intel MPI. The Fluent directory is shared in the network as the working directory of Fluent.

I am launching Fluent with 8 processes and it does not hangs when opening. Now it is iterating for the solution but it's taking too long between iterations. I mean, it's kind of pausing after each iteration and it'll take too long to reach convergence if I don't improve this issue. I assume this is due the communication between pcs is delayed or there is a kind of bottleneck in the network. I am please asking you for an advice in this.

Thanks in advance,
César