# Error during computation **URL:** \ **Category:** General Questions\ **Created:** [December 13, 2022, 1:11pm UTC](https://prepomax.discourse.group/t/error-during-computation/616 "2022-12-13T13:11:46Z")\ **Posts on this page:** 20\ **Page:** 1
**Author:** ![Michal](https://avatars.discourse-cdn.com/v4/letter/m/34f0e0/32.png) [@Michal](https://prepomax.discourse.group/u/Michal)\ **Post date:** [December 13, 2022, 1:11pm UTC](https://prepomax.discourse.group/t/error-during-computation/616/1 "2022-12-13T13:11:46Z")
I have used Spooles solver since task is very large and have tied contacts (nonlinear) ![712](https://global.discourse-cdn.com/free1/uploads/prepomax/original/1X/2c2c5904831b72af2aec73013d93b39822be760d.jpeg) ---
**Author:** ![FEAnalyst](https://yyz2.discourse-cdn.com/free1/user_avatar/prepomax.discourse.group/feanalyst/32/688_2.png) [@FEAnalyst](https://prepomax.discourse.group/u/FEAnalyst)\ **Post date:** [December 13, 2022, 1:56pm UTC](https://prepomax.discourse.group/t/error-during-computation/616/2 "2022-12-13T13:56:32Z")
If it’s large then I’d rather use PaStiX or Pardiso. Did you try the latter ? ---
**Author:** ![Michal](https://avatars.discourse-cdn.com/v4/letter/m/34f0e0/32.png) [@Michal](https://prepomax.discourse.group/u/Michal)\ **Post date:** [December 13, 2022, 1:59pm UTC](https://prepomax.discourse.group/t/error-during-computation/616/3 "2022-12-13T13:59:19Z")
both for pardiso and pastix memory error best regards ---
**Author:** ![FEAnalyst](https://yyz2.discourse-cdn.com/free1/user_avatar/prepomax.discourse.group/feanalyst/32/688_2.png) [@FEAnalyst](https://prepomax.discourse.group/u/FEAnalyst)\ **Post date:** [December 13, 2022, 2:18pm UTC](https://prepomax.discourse.group/t/error-during-computation/616/4 "2022-12-13T14:18:53Z")
I removed the other duplicated topic, let’s keep the discussion here since there’s no sign of PrePoMax’s fault yet. Can you share the file or show some screenshots with the model ? ---
**Author:** ![Michal](https://avatars.discourse-cdn.com/v4/letter/m/34f0e0/32.png) [@Michal](https://prepomax.discourse.group/u/Michal)\ **Post date:** [December 13, 2022, 2:30pm UTC](https://prepomax.discourse.group/t/error-during-computation/616/5 "2022-12-13T14:30:18Z")
right now I’m recalculating by using Pastix best regards ---
**Author:** ![Michal](https://avatars.discourse-cdn.com/v4/letter/m/34f0e0/32.png) [@Michal](https://prepomax.discourse.group/u/Michal)\ **Post date:** [December 13, 2022, 2:36pm UTC](https://prepomax.discourse.group/t/error-during-computation/616/6 "2022-12-13T14:36:04Z")
what would you suggest : using tied constrains instead of tie contact and nonlinearity ? but I obtain not resolved tie constrains by using search tool surface to surface when I use tied contact this problem not exists more detailed tutorial for this tool with more comlex models would be usefull ---
**Author:** ![Michal](https://avatars.discourse-cdn.com/v4/letter/m/34f0e0/32.png) [@Michal](https://prepomax.discourse.group/u/Michal)\ **Post date:** [December 13, 2022, 2:58pm UTC](https://prepomax.discourse.group/t/error-during-computation/616/7 "2022-12-13T14:58:01Z")
![713](https://global.discourse-cdn.com/free1/uploads/prepomax/original/1X/7fadefb3c9fd85f838831c5f76034e2acc94aecc.jpeg) ![714](https://global.discourse-cdn.com/free1/uploads/prepomax/original/1X/51502a50624601c73ae816d14746e47d1978afc3.jpeg) with pastix solver also failure ---
**Author:** ![FEAnalyst](https://yyz2.discourse-cdn.com/free1/user_avatar/prepomax.discourse.group/feanalyst/32/688_2.png) [@FEAnalyst](https://prepomax.discourse.group/u/FEAnalyst)\ **Post date:** [December 13, 2022, 4:04pm UTC](https://prepomax.discourse.group/t/error-during-computation/616/8 "2022-12-13T16:04:17Z")
The mesh is extremely fine. How many elements does it have ? Did you try with a much coarser mesh ? ---
**Author:** ![Michal](https://avatars.discourse-cdn.com/v4/letter/m/34f0e0/32.png) [@Michal](https://prepomax.discourse.group/u/Michal)\ **Post date:** [December 13, 2022, 4:28pm UTC](https://prepomax.discourse.group/t/error-during-computation/616/9 "2022-12-13T16:28:01Z")
this structure consist of steel plates (box section)so I think that mesh is not so accurate as you think for steel plates shell modeling is ok but in prepomax it is not strong developed, I think that at lest 4 elements should be across thickness direction, also wedge and bricks elements are not supported in PPM .Main problem is for me with size of model and constraints or contacts (glued / welded surfaces ) no possibility to decrease size best regards ---
**Author:** ![FEAnalyst](https://yyz2.discourse-cdn.com/free1/user_avatar/prepomax.discourse.group/feanalyst/32/688_2.png) [@FEAnalyst](https://prepomax.discourse.group/u/FEAnalyst)\ **Post date:** [December 13, 2022, 4:37pm UTC](https://prepomax.discourse.group/t/error-during-computation/616/10 "2022-12-13T16:37:01Z")
The geometry is quite complex but maybe you could simplify it a bit and mesh it with shell elements if it’s thin-walled. Solid meshes for such structures can get huge. ---
**Author:** ![Michal](https://avatars.discourse-cdn.com/v4/letter/m/34f0e0/32.png) [@Michal](https://prepomax.discourse.group/u/Michal)\ **Post date:** [December 13, 2022, 4:54pm UTC](https://prepomax.discourse.group/t/error-during-computation/616/11 "2022-12-13T16:54:48Z")
good tutorial regarding constraints /contact is needed badly , especially with not trivial examples with complex geometry with some exceptions etc… ---
**Author:** ![Michal](https://avatars.discourse-cdn.com/v4/letter/m/34f0e0/32.png) [@Michal](https://prepomax.discourse.group/u/Michal)\ **Post date:** [December 14, 2022, 1:40pm UTC](https://prepomax.discourse.group/t/error-during-computation/616/12 "2022-12-14T13:40:00Z")
I have been using PPM / calculix for over 6 months , I have noticed that maybye not PPM but calculix for sure have problems with large models . I tried different solvers but situation still remains the same . for medium compact models it is good solution . I hope that software will be developed ---
**Author:** ![ANYS](https://yyz2.discourse-cdn.com/free1/user_avatar/prepomax.discourse.group/anys/32/7737_2.png) [@ANYS](https://prepomax.discourse.group/u/ANYS)\ **Post date:** [December 14, 2022, 2:53pm UTC](https://prepomax.discourse.group/t/error-during-computation/616/13 "2022-12-14T14:53:43Z")
Hi Michal, > [@FEAnalyst](#): > > How many elements does it have ? ¿Have you tried the Pardiso Out of core version? I have solve up to 1.5M nodes models without issue. ---
**Author:** ![Matej](https://avatars.discourse-cdn.com/v4/letter/m/a698b9/32.png) [@Matej](https://prepomax.discourse.group/u/Matej)\ **Post date:** [December 14, 2022, 3:15pm UTC](https://prepomax.discourse.group/t/error-during-computation/616/14 "2022-12-14T15:15:16Z")
> [@Michal](#): > > calculix for sure have problems with large models . We were able to run simulations of up to 3 million elements, but we used a Linux environment on an HPC machine. We did not test larger models, so I can not say how they perform. ---
**Author:** ![Michal](https://avatars.discourse-cdn.com/v4/letter/m/34f0e0/32.png) [@Michal](https://prepomax.discourse.group/u/Michal)\ **Post date:** [December 14, 2022, 5:37pm UTC](https://prepomax.discourse.group/t/error-during-computation/616/15 "2022-12-14T17:37:58Z")
where can I finf out of core version ? ---
**Author:** ![Michal](https://avatars.discourse-cdn.com/v4/letter/m/34f0e0/32.png) [@Michal](https://prepomax.discourse.group/u/Michal)\ **Post date:** [December 14, 2022, 5:58pm UTC](https://prepomax.discourse.group/t/error-during-computation/616/16 "2022-12-14T17:58:18Z")
of course where can I find ---
**Author:** ![Michal](https://avatars.discourse-cdn.com/v4/letter/m/34f0e0/32.png) [@Michal](https://prepomax.discourse.group/u/Michal)\ **Post date:** [December 14, 2022, 8:53pm UTC](https://prepomax.discourse.group/t/error-during-computation/616/17 "2022-12-14T20:53:18Z")
Where can I get Pardiso out of core ersion ? ---
**Author:** ![ANYS](https://yyz2.discourse-cdn.com/free1/user_avatar/prepomax.discourse.group/anys/32/7737_2.png) [@ANYS](https://prepomax.discourse.group/u/ANYS)\ **Post date:** [December 14, 2022, 11:18pm UTC](https://prepomax.discourse.group/t/error-during-computation/616/18 "2022-12-14T23:18:33Z")
> **[\*too many cutbacks \*STATIC analysis NGLEOM = ON](https://calculix.discourse.group/t/too-many-cutbacks-static-analysis-ngleom-on/779/12)** > > OK. Yea certainly get linear working first. I can’t think of any other reason displacement would be zero everywhere else though. Could you show a zoomed in deformed view of the displaced face and its transition to the undeformed area? I don’t know... ---
**Author:** ![Michal](https://avatars.discourse-cdn.com/v4/letter/m/34f0e0/32.png) [@Michal](https://prepomax.discourse.group/u/Michal)\ **Post date:** [December 15, 2022, 9:07am UTC](https://prepomax.discourse.group/t/error-during-computation/616/19 "2022-12-15T09:07:38Z")
could you provide me with pardiso ooc version ---
**Author:** ![FEAnalyst](https://yyz2.discourse-cdn.com/free1/user_avatar/prepomax.discourse.group/feanalyst/32/688_2.png) [@FEAnalyst](https://prepomax.discourse.group/u/FEAnalyst)\ **Post date:** [December 18, 2022, 9:52pm UTC](https://prepomax.discourse.group/t/error-during-computation/616/20 "2022-12-18T21:52:40Z")
Check this website: [http://www.tu.kielce.pl/~rokach/instr/ppm\_main.htm](http://www.tu.kielce.pl/~rokach/instr/ppm_main.htm) [Next page](https://prepomax.discourse.group/t/error-during-computation/616.md?page=2)