Reading a file from 32-bit Fluent 15.0 through a UDF for DPM in parallel
 

Hi everyone,

I am currently having a problem reading an external data file with a UDF - DEFINE_DPM_SOURCE.

I am combining Fluent with another C program made from my university that contains 32 bit lib files. So I have only managed to get this working on 32-bit fluent.

The structure of the program is
-Open data file
-Read data file
-Close data file
-Read mass concentrations in fluid
-Compare with data file
-Create mass source at particle

The problem I have is that when I get the message that the UDF cannot read the data file. This only happens in parallel fluent, the program works perfectly in serial however is too slow. I suspect this problem has to do with different nodes opening the data file at the same time.

For DPM I have the option of Message Passing or Shared Memory.

Shared Memory works but is too slow. Message-passing gives me the error. Hybrid is not available for 32-bit.

Is there any way to parallelize this process? Perhaps there is a way to have different nodes read different data files.

Thanks in advance