TAGGED: ls-dyna, ls-prepost, restart, restarting-analysis
May 27, 2022 at 9:39 amelisa.peroglioSubscriberHello, 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 pmAndreas KoutrasAnsys 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 amelisa.peroglioSubscriberHello, 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!
- You must be logged in to reply to this topic.
Boost Ansys Fluent Simulations with AWS
Computational Fluid Dynamics (CFD) helps engineers design products in which the flow of fluid components is a significant challenge. These different use cases often require large complex models to solve on a traditional workstation. Click here to join this event to learn how to leverage Ansys Fluids on the cloud, thanks to Ansys Gateway powered by AWS.
Earth Rescue – An Ansys Online Series
The climate crisis is here. But so is the human ingenuity to fight it. Earth Rescue reveals what visionary companies are doing today to engineer radical new ideas in the fight against climate change. Click here to watch the first episode.
Subscribe to the Ansys Blog to get great new content about the power of simulation delivered right to your email on a weekly basis. With content from Ansys experts, partners and customers you will learn about product development advances, thought leadership and trends and tips to better use Ansys tools. Sign up here.
- explicit dynamics
- Explicit dynamics ERRORS
- turning simulation
- getting zero maximum and minimum stress value in explicit analysis
- How do get Full values instead of just minimum and maximum ?
- How to figure out impact force in Explicit Dynamic Analysis
- Monte Carlo Simulation
- Euler Domain Restricting Simulation
- Running an explicit dynamics simulation on a composite plate
- Which analysis to use for dynamic and quasi-static compression of auxetic structures?
© 2023 Copyright ANSYS, Inc. All rights reserved.