Parallel Processing Error (UDF)

soheilr · June 11, 2016, 17:06

Hi,
I am trying to use parallel processing for my udf simulation but I have faced with following errors:

- received suspend command for a pmi context that doesn exist unmatched id 1
- the fl process could not be started fluent
- An existing connection was forcibly closed by the remote host

Previously I did not have such an error with this UDF!!!

Please Help me with this error

`e` · June 11, 2016, 17:33

What's your UDF code? Do you get the same error in serial mode or parallel with one process?

soheilr · June 11, 2016, 17:37

Hi,
There is no problem in serial mode.

`e` · June 11, 2016, 17:39

We can't help if you don't provide your source code to spot the error with.

soheilr · June 11, 2016, 17:44

Quote:

Originally Posted by `e`

We can't help if you don't provide your source code to spot the error with.

Here is the UDF!
King Regards

`e` · June 11, 2016, 20:47

The .zip file is corrupted. Simply copy and paste the code within [CODE] tags.

soheilr · June 12, 2016, 03:52

The code is nearly 100-A4 pages! I have to attach it!

soheilr · June 12, 2016, 03:59

I double checked the zip file!
There was no problem and unzipped well!

`e` · June 12, 2016, 04:46

Ok, I've unzipped the file using 7-Zip (Windows was giving an error). There are 4241 lines of code there, you'll need to find where the problem is by debugging. First, find the functions which are causing the issue (comment out or disable them one by one). Second, find the line of code(s) by printing messages to the screen with Message().

soheilr · June 12, 2016, 07:15

In my opinion, this code is fine at all; since it is an official code of ANSYS FLUENT and previously checked by other researchers. Also, I used this udf in parallel mode about 3 months ago without error, on another system. But I do not have access to that system anymore !

`e` · June 12, 2016, 15:52

I saw the UDF was last updated for Fluent 6.3 which was released in 2006. It's likely there's been changes in ANSYS Fluent in the last 10 years which has caused the UDF to break. Have you contacted ANSYS to see if they've released a new update? Try running an older version of Fluent (the one that worked for you in the past). Otherwise, it'd take a while to go through this code and sort out yourself.

`e` · June 13, 2016, 18:36

There's another user, blgypeng, who is now asking about this UDF as well. It sounds like the issue is with how Fluent is sending and receiving data from the GUI.

June 11, 2016, 17:06	Parallel Processing Error (UDF)	#1
soheilr New Member soheil radfar Join Date: Jun 2016 Posts: 11 Rep Power: 9	Hi, I am trying to use parallel processing for my udf simulation but I have faced with following errors: - received suspend command for a pmi context that doesn exist unmatched id 1 - the fl process could not be started fluent - An existing connection was forcibly closed by the remote host Previously I did not have such an error with this UDF!!! Please Help me with this error

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June 11, 2016, 17:33		#2
`e` Senior Member Join Date: Mar 2015 Posts: 892 Rep Power: 18	What's your UDF code? Do you get the same error in serial mode or parallel with one process?

June 11, 2016, 17:37		#3
soheilr New Member soheil radfar Join Date: Jun 2016 Posts: 11 Rep Power: 9	Hi, There is no problem in serial mode.

June 11, 2016, 17:39		#4
`e` Senior Member Join Date: Mar 2015 Posts: 892 Rep Power: 18	We can't help if you don't provide your source code to spot the error with.

June 11, 2016, 20:47		#6
`e` Senior Member Join Date: Mar 2015 Posts: 892 Rep Power: 18	The .zip file is corrupted. Simply copy and paste the code within [CODE] tags.

June 12, 2016, 03:52		#7
soheilr New Member soheil radfar Join Date: Jun 2016 Posts: 11 Rep Power: 9	The code is nearly 100-A4 pages! I have to attach it!

June 12, 2016, 03:59		#8
soheilr New Member soheil radfar Join Date: Jun 2016 Posts: 11 Rep Power: 9	I double checked the zip file! There was no problem and unzipped well!

June 12, 2016, 04:46		#9
`e` Senior Member Join Date: Mar 2015 Posts: 892 Rep Power: 18	Ok, I've unzipped the file using 7-Zip (Windows was giving an error). There are 4241 lines of code there, you'll need to find where the problem is by debugging. First, find the functions which are causing the issue (comment out or disable them one by one). Second, find the line of code(s) by printing messages to the screen with Message().

June 12, 2016, 07:15		#10
soheilr New Member soheil radfar Join Date: Jun 2016 Posts: 11 Rep Power: 9	In my opinion, this code is fine at all; since it is an official code of ANSYS FLUENT and previously checked by other researchers. Also, I used this udf in parallel mode about 3 months ago without error, on another system. But I do not have access to that system anymore !

June 12, 2016, 15:52		#11
`e` Senior Member Join Date: Mar 2015 Posts: 892 Rep Power: 18	I saw the UDF was last updated for Fluent 6.3 which was released in 2006. It's likely there's been changes in ANSYS Fluent in the last 10 years which has caused the UDF to break. Have you contacted ANSYS to see if they've released a new update? Try running an older version of Fluent (the one that worked for you in the past). Otherwise, it'd take a while to go through this code and sort out yourself.

June 13, 2016, 18:36		#12
`e` Senior Member Join Date: Mar 2015 Posts: 892 Rep Power: 18	There's another user, blgypeng, who is now asking about this UDF as well. It sounds like the issue is with how Fluent is sending and receiving data from the GUI.