Hi SimScale Support / Community,
I am experiencing a repeated issue where a nonlinear static structural simulation remains at 0% and never generates a Solver Log.
I would like to determine whether this is a compute/job-start issue or whether something in the simulation setup prevents the solver from launching.
Simulation setup
- Analysis: Nonlinear static structural
- Geometric nonlinearity: enabled
- Materials: hyperelastic
- Contact: bonded
- Element technology: Automatic
- Mesh order: 1st order
- Mesh size: 74,572 tetrahedra, 20,780 nodes
- No Remote Force is used
- Boundary conditions consist only of one Fixed Support and two Pressure boundary conditions
- The loads are explicitly ramped with pseudo-time
trather than applied instantaneously - Automatic boundary-condition ramping is disabled because the pressure ramp is explicitly defined in the formulas
Run 1 – Nominal_Rest_Diagnostic_v1
- Remained at 0% for approximately 47 minutes
- No Solver Log was generated
- I then requested cancellation
- Cancellation itself took approximately another 30+ minutes
- Final status: Canceled by user / Error 0%
- Event Log stated:
“The run was canceled but the cancellation didn’t finish in time. No core hours will be deducted from your account for this run.” - Final reported core-hour usage: 0.00
Run 2 – Nominal_Rest_Diagnostic_v2
- The page was refreshed before starting the second run
- The simulation setup was left unchanged
- Again remained at 0% for more than 27 minutes
- Again, no Solver Log was generated
- I requested cancellation
- Final elapsed time was approximately 50 minutes
- Final status: Canceled by user / Error 0%
- The same cancellation-timeout message appeared in the Event Log
- Final reported core-hour usage: 0.00
The Event Log did not show a message indicating that the job was waiting for compute resources.
I also contacted the in-product Ray Support agent. It confirmed that:
- standard Pressure boundary conditions applied to many faces do not normally cause this kind of long 0% delay;
- the known preprocessing issue involving many faces mainly concerns Remote Force, which I am not using;
- if a job is waiting for compute resources, this should normally be reflected in the Event Log;
- there is no additional backend job-start status available to the user beyond the Event Log.
My main concern is therefore that in two independent runs the solver apparently never reached the stage where a Solver Log was created.
Could you please help clarify:
- Does the absence of any Solver Log after tens of minutes indicate that the solver/compute job never actually started?
- Is there anything in this setup that could block the solver during preprocessing before the Solver Log is created?
- Could this be a backend/resource-allocation issue even though the Event Log did not show a “waiting for resources” message?
- Would you recommend retrying the same simulation unchanged, or is there a specific setup item I should check first?
I have attached screenshots showing:
- the final status of Run 1;
- the final status of Run 2;
- the mesh information showing 1st-order mesh, 74,572 tetrahedra, and 20,780 nodes.
Project link:
[PASTE PROJECT LINK HERE]
Thank you very much for your help.
