Learning Forum

[Atish Gawale]

Hello,

I am running simulation using *CESE and *CHEMISTRY keywords. I am able to run simulation on double precision SMP but get errors while running simulation with double precision MMP.  This error is related to chemistry convergence. My model has ~0.4million elements. 

Regards,

Atish

[Reno Genest]

Hello Atish,

Could you post a screenshot of  the error message you get when running MPP dp?

 

Also, which solver are you using? Could you post a screenshot of the LS-DYNA banner at the top of the d3hsp file?

 

Reno.

[Atish Gawale]

Hi Reno,

Below error is mentioned in d3hsp file.

*** Error 100116 (CESE+116) (processor # 0)
        3749355 errors detected in CESE solver during step = 1
 
 *** Error 100118 (CESE+118) (processor # 0)
     Errors detected in CESE solver integration step.
     Please check each processor's message file for details.

while output terminal shows below error.

*** Error 150209 (CHEM+209)
     Chemistry EOS nonlinear temperature solver failed to converge.
     Error code = 50 Last iterate temperature = NaN

LS Dyna banner for smp d and mpp d R13 version is shown below. 

[Reno Genest]

Hello Atish,

Please try with the most recent version R14.1. Also, note that R15 will be released very soon (within a few days). If you have an email address you can share with me, I can send you a DEV version of the solver.

In addition, please check in all mesXXXX files for a more meaningful error message. Sometimes, a meaningful error message is written in one of the mesXXXX files. You will get one mesXXXX file per core run in MPP; so, if you ran on many cores, it can be tedious to check all mesXXXX files for error messages. You can use the following web app to upload all your mesXXXX files and extract the error messages automatically:

https://nagasairam112-check-dyna-errors-error-dyna-check-rq20je.streamlit.app/

 

Let me know how it goes.

 

Reno.

[Atish Gawale]

 

Thanks Reno. I will check with R14.1 version.

 

[Reno Genest]

Hello Atish,

Ok, sounds good. I will send you the latest DEV solver via SecureTransfer. 

 

Let me know how it  goes.

 

Reno.

[Atish Gawale]

Hi Reno,

I copied path to mpi file and getting error related to mpiexe. Am I missing anything in the solver path or expression?

'mpiexec' is not recognized as an internal or external command.

[Reno Genest]

Hello Atish,

Have you found meaningful error messages in the mesXXXX files? If so, please post the error message here.

 

Thanks.

 

Reno.

[Reno Genest]

Hello Atish,

 

What error messge are you getting? Do you have Intel MPI installed on your machine? Try to point to the complete path for the mpiexec file:

"C:\Program Files (x86)\Intel\oneAPI\mpi\2021.8.0\bin\mpiexec.exe" -np 4 

 

Let me know how it goes.

 

 

Reno.

[Atish Gawale]

Yes. I installed intel MPI on my machine. I am sharing LS run and errors described below.

Regards,
Atish

[Reno Genest]

Hello Atish,

You cannot run this LS-DYNA executable on Windows. The executable I sent  you is for Linux. Try on Linux and let me know how it goes.

The LS-DYNA banner you sent me indicated a Linux OS and so this is why I sent you the Linux version of LS-DYNA.

 

Reno.

[Atish Gawale]

Hi Reno,

Could you help me which mpp R14.1 version shall I install on Linux system? There are several directories listed below.

For example if I select ifort 190 sse2/, then do I need to install and try run with intelmpi, openmpi and platformmpi? or only mpp d intelmpi should be enough. 

Regards,

Atish

[Reno Genest]

Hello Atish,

I would try sse2 or avx2. For the MPI, it depends which one you have installed on your machine. If you use Intel MPI, then download LS-DYNA for Intel MPI.

Let me know how it goes.

 

Reno.