LS – Dyna Restart, without having “d3dump01” but the files from d3dump01.0001 and d3dump01.0063

- May 27, 2022 at 9:39 am
  
  elisa.peroglio
  Subscriber
  
  Hello, I have some troubles in running the Ls - Dyna simple restart. In my model there is not cyclical print of a d3dump (the CYCL is equal to 0.0 in the keyword BINARY_D3DUMP), in fact at the end of the simulation I only have d3dump01.
  But the problem is that I don't have exactly the file "d3dump01" while I got 63 files, I think each regarding one single submodel. So how am I suppose to restart the simulations? Running "r=d3dump01", as manual tells, the simulations don't start because it's not finding the file d3dump. I don't think it is correct to launch "r=d3dump01.0063" because I think it is taking only the 63th submodel.... Do you know if there is a way to restart in this conditions? Maybe there is a way to restart by specifying all the 63 d3dumps together?
- May 27, 2022 at 10:19 pm
  
  Andreas Koutras
  Ansys Employee
  
  It seems you're running MPP with 64 cores. To do a simple or a small restart in MPP (details in Manual Vol I, under "Restart Input Data"), please add the command "r=d3dump01" in the execution line. Note that in the restart analysis you must use the same number of cores as in the previous run. The d3dump01.0000 - d3dump01.0063 files need to be in the directory of restart run.
  For example, if you're using Intel MPI, the execution command for a small restart would look like:
  mpiexec -n 64 mppdyna_exe i=restart_input.k r=d3dump01
  I hope this helps.
- May 28, 2022 at 9:55 am
  
  elisa.peroglio
  Subscriber
  
  Hello, thank you very much! So I can use the syntax "r=d3dump01" even if the file "d3dump01" doesn't exist? (while are existing the d3dump01.0001 etc...). And if I'm doing a simple restart, the "restart_input.k" can be the .k file that was used for the very first start of the simulation? Or I have to modify it somewhere?
  Thank you a lot!

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