Hello,
Could you follow the forum usage recommendations and provide the relevant logs ?
On the cluster, are you starting the code from the GUI or "code_saturne submit" ? Is the post-install (etc/code_saturne.cfg) step done ?
Regards,
Yvan
Search found 4100 matches
- Fri Mar 22, 2024 4:05 am
- Forum: code_saturne usage
- Topic: Code_Saturne on hpc
- Replies: 5
- Views: 7630
- Mon Mar 18, 2024 2:24 am
- Forum: code_saturne usage
- Topic: Strange Halting at Half Total Iterations
- Replies: 9
- Views: 6063
Re: Strange Halting at Half Total Iterations
Hello, Yes, this is the default : except for test runs of 10 iterations or less, there is a checkpoint every 1/4 of the total number of iterations required. Again, do you know if there was an "upgrade"/maintenance of some librairies on your cluster ? Do you have access to other MPI librari...
- Fri Mar 15, 2024 12:27 pm
- Forum: code_saturne usage
- Topic: Strange Halting at Half Total Iterations
- Replies: 9
- Views: 6063
Re: Strange Halting at Half Total Iterations
Hello, With version 8.1, you should not have the code_saturne "race condition" bug. So this might be a problem in the system. Did you reproduce it a second time ? On our machine, we had the issue with OpenMPI 4 and 4.1 (less frequent with 4.1), but this depends on lower level elements of t...
- Thu Mar 14, 2024 4:39 pm
- Forum: code_saturne usage
- Topic: Strange Halting at Half Total Iterations
- Replies: 9
- Views: 6063
Re: Strange Halting at Half Total Iterations
Hello, I forgot to ask/you forgot to remind me which version of the code you are using. There was in issue in the restart code some time ago (more then 2 years if I remember) where we could also have a race condition leading to the behavior you observe. Otherwise, if the issue only happened once, tr...
- Wed Mar 13, 2024 7:22 pm
- Forum: code_saturne usage
- Topic: Strange Halting at Half Total Iterations
- Replies: 9
- Views: 6063
Re: Strange Halting at Half Total Iterations
Hello, What type of machine/compute environment are you running on, how many MPI ranks do you use, and how long has the code been running ? This seems to be a hang when writing an intermediate checkpoint file, and may have similarities with some issues we encountered on a cluster following a system ...
- Tue Mar 12, 2024 11:34 am
- Forum: code_saturne usage
- Topic: Add source term. Need help
- Replies: 1
- Views: 2146
Re: Add source term. Need help
Hello,
Yes, check in body forces.
Yvan
Yes, check in body forces.
Yvan
- Mon Mar 11, 2024 2:18 pm
- Forum: code_saturne usage
- Topic: Scalars and RIJ ssg
- Replies: 4
- Views: 2248
Re: Scalars and RIJ ssg
Hello,
I have suggested to some colleagues more expert in.the turbulence modeling of the code to check this post... I'll ping them again.
Best regards,
Yvan
I have suggested to some colleagues more expert in.the turbulence modeling of the code to check this post... I'll ping them again.
Best regards,
Yvan
- Mon Mar 11, 2024 2:16 pm
- Forum: code_saturne usage
- Topic: Skin friction coefficient calculation
- Replies: 5
- Views: 5432
Re: Skin friction coefficient calculation
Hello,
Yes the analysis seems correct to me. If anyone with better knowledge of this part of the code has additional details to provide, they ae welcome...
Best regards,
Yvan
Yes the analysis seems correct to me. If anyone with better knowledge of this part of the code has additional details to provide, they ae welcome...
Best regards,
Yvan
- Mon Mar 11, 2024 2:14 pm
- Forum: code_saturne usage
- Topic: streamwise periodicity
- Replies: 26
- Views: 28323
Re: streamwise periodicity
Hello, There are some user examples in.the documentation but they may not be sufficient. When.the code starts a new time step, the current value is copied into val_pre and the new value is computed. What I suspect is happening in your case is that when the source term user-defined function is called...
- Fri Mar 08, 2024 12:51 pm
- Forum: code_saturne usage
- Topic: streamwise periodicity
- Replies: 26
- Views: 28323
Re: streamwise periodicity
Hello, Yes, you seem to be using the standard temperature resolution. Do not forget that for enthalpy, you also need to multiply by density and CP. If this is missing your sink term might simply be too small ? What are the other factors (boundary and initial conditions) influencing enthalpy here ? B...