In this section you find information about occurring warnings and errors. As we are continuously gathering information on how/when warnings and errors occur and under which circumstances this site will constantly be updated with new information.

You can find Warning & Error codes displayed in the Studies tab by double clicking on the Generative Design Status or in the log files in the result folder in your workspace (log_error.log & log_warning.log).

Please contact the MSC Apex Support (mscapex.support@mscsoftware.com) if a warning or error occurs which is not yet listed here or cannot be averted by applying the compiled help.

Information regarding the “Analysis Readiness” checks can be found here.

W5754bb78

GPU solver was not requested, using CPU solver only.

This is an information regarding the usage of GPU solving. The GPU solving was not activated.

W75eebb60

GPU computation was requested but is unavailable due to license limitations, using CPU solver only.

This is an information regarding the usage of GPU solving. To use GPU Solving an additional license is necessary. Please check your licenses in Options → License Manager or deactivate GPU solving in the Options → Application Settings - Generative Design Solver.

W7c60aa30

GPU computation was requested but no devices were found, using CPU solver only.

W03bfd378

GPU computation was requested, using up to … GPU(s).

W255de448

Found … voxels outside of valid design space … removed them.

Optimization run continues.

Please contact MSC Apex Support.

W244ff728

Cannot map voxel …

The loads and boundary conditions could not be mapped to the voxel model and might not be considered in the optimisation anymore. LBCs should always be applied to Non-Design Spaces. These ensure a correct consideration of the LBCs during the optimisation.

W6f682328

Cannot copy output file. … does not exist as regular file

This might occur while performing a Command Line optimisation. While the SwitchAddRemove (schedule.iterations.OutputDuplicateInErode.outputMode, schedule.iterations.OutputDuplicateInGrow.outputMode) option is active only every second iteration is visible as an result. In this case the iteration could not be copied but the optimisation will continue. To remedy this situation delete the output folder and start the optimisation anew.

W73209b30

Copying output file … would override …

This might occur while performing a Command Line optimisation. While the SwitchAddRemove (schedule.iterations.OutputDuplicateInErode.outputMode, schedule.iterations.OutputDuplicateInGrow.outputMode) option is active only every second iteration is visible as an result. In this case the iteration could not be copied but the optimisation will continue. To remedy this situation delete the output folder and start the optimisation anew.

W7c691a00

Unable to copy output file …

This might occur while performing a Command Line optimisation. While the SwitchAddRemove (schedule.iterations.OutputDuplicateInErode.outputMode, schedule.iterations.OutputDuplicateInGrow.outputMode) option is active only every second iteration is visible as an result. In this case the iteration could not be copied but the optimisation will continue. To remedy this situation delete the output folder and start the optimisation anew.

W6df456e8

Carve intersection is disabled. The fallback intersection method will take place instead.

We8bf37f1

Remeshing failed, mesh was not changed. The optimisation will continue without creating a remesh.

W1511c540

Sewing resolution … exceeds rasterization resolution … adjusting threshold from … to …

The model is very big (galactic size) and cannot be imported in the software. Check you unit system and dimensions.

W62b92548

Conflicting local coordinate systems at symmetry boundary.

The symmetry plane is too close to a Non-Design Space which experiences LBCs which refer to another local coordinate system. The symmetry or the local coordinates might not be taken into consideration.

W2641b610

Symmetry causes all remaining DOF … to be fixed

The optimisation has reduced nearly all material which is not a fixation or part of the symmetry plane. All remaining elements are fixated. The applied force might be too small in comparison to the stress goal which ensures the reduction of almost all the material. Please reconsider your model set up.

W213b4638

FEM forces in … are zero

There are no forces applied to the design, forces are zero, point of application is fixated in the same event as the force is applied or forces were forgotten to place in one event. Please, check your model set up.

W416620d0

FEM matrix solution failed (error … fails to achieve target margin … after … of … iterations.

The FEM could not be solved sufficiently because of the model set up. Please reconsider your model set up and try again.

W4c1a8f98

FEM matrix solution failed (error … fails to achieve target margin …

The FEM could not be solved sufficiently because of the model set up. Please reconsider your model set up and try again.

W6bef1a88

Low memory, reducing preallocation amount … attempts left.

Memory storage is checked. If not enough memory is available, less memory storage is checked. If there isn’t enough memory storage available to do the allocation an Error (Eb20f3210) will be occur.

W644693f8

Time estimation has become inconsistent, expect inaccuracies.

For Restarts and Two-Stage Optimisations the time estimation is inaccurate.

W5cfd1878

Solving matrix … via extern solver … failed.

Using CPU solver only

W36faacc8

Error detecting available memory / low available memory … GB

There are two possible reasons for this warning:

1. The available memory cannot be detected because of the operating system.

2. There isn’t even enough memory available to let the optimisation start.

Make sure that there is more memory available or reduce the complexity.

W4ebe0a20

… Projected memory requirement exceeds available memory - complexity … is too high. Theoretical limit: complexity … recommended: …

This is a feasibility check regarding the input complexity value. The chosen complexity value is too high to be calculated on this machine. A certain maximum complexity value is recommended.

W4ff53240

… Optimization will likely run out of memory - available … GB, projected need … absolute maximum … recommended maximum …

This is a feasibility check regarding the input complexity value. The chosen complexity value is too high to be calculated on this machine. A certain maximum complexity value is recommended.

W648041c8

Retained volumes occupy a significant portion of design space … volume 50% which increases the calculation time as well as the needed memory. Please reduce the complexity to reduce the calculation time and memory. Retained volumes will occupy about … GB of memory with current settings.

W76bd49a8

Unable to compute centroid for geometry … using bounding box center instead

A “corrupt” STL/PLY file was supplied for a Mask named in the warning text. Depending on other mask settings (whether the surface is to be used / filled), different centroids / centers of gravity are computed. This warning indicates all those attempts have failed and instead the bounding box center is used.

This can happen if the input has degenerate triangles or is not a closed surface. Please check the input files or replace these if possible.

W2e4e8b88

boundary condition is dislodged - no active elements …

A boundary condition was disconnected. A reconnect and other connection strategies were unsuccessful. Please check you model set up and make some adjustments for a feasible model.

W33559448

License feature(s) have become invalid, checking out again in … seconds.

They will be checked out again in … seconds.

W5b09c550

event … has no connected boundary conditions.

The Event … has no connected boundary conditions. The Event will be ignored from now on.

W5b820290

geometry … is not used by anything

The geometry … is not used by anything in the configuration file and will not be considered in the optimisation.

W244ee728

coordinate system … is not used by anything

The defined coordinate system … is not used by anything in the configuration file and will not be considered in the optimisation.

W41d43530

Missing density for space … setting to …

The density is set to the value listed in the warning message.

W1fb6cc10

Config entry 'calculationType' is deprecated, please use 'shapeQuality' instead.

W384d5280

Config entry 'designType' is deprecated, please use 'strutDensity' instead.

W74060730

fullPivHouseholderQr failed, attempting next solver

Different methods for solving FE equation systems are being used. This one did not work so continuing to the next method.

W760bf120

colPivHouseholderQr failed, attempting next solver

Different methods for solving FE equation systems are being used. This one did not work so continuing to the next method.

W777a0bc8

completeOrthogonalDecomposition failed, attempting next solver

Different methods for solving FE equation systems are being used. This one did not work so continuing to the next method.

W041b3b18

CG failed

Different methods for solving FE equation systems are being used. This one did not work so continuing to the next method.

W31b28cd8

Build space geometry is not also design

This might occur while performing a Command Line optimisation. The defined build space geometry is not defined as the design geometry. Therefore, the geometry needed for the intersection is not available and thus no intersection geometry is available. Please adjust the Configuration File.

W2f07aa98

Geometry … is not used by anything

This might occur while performing a Command Line optimisation. A geometry is not used in the optimisation. Please adjust the Configuration File.

W38a529d0

Failure criterion … is not used by anything

This might occur while performing a Command Line optimisation. The Failure Criterion is not used in the optimisation. Please adjust the Configuration File.

W6c825a00

Material is not valid. Condition 1 failed for Isotropic material …

W6c825a01

Material is not valid. Condition 2 failed for Isotropic material …

W6c825b00

Material is not valid. Condition 1 failed for transversal isotropic material …

W6c825b01

Material is not valid. Condition 2 failed for transversal isotropic material …

W6c825b02

Material is not valid. Condition 3 failed for transversal isotropic material …

W6c825b03

Material is not valid. Condition 4 failed for transversal isotropic material …

W6c825b05

Material is not valid. Condition 6 failed for transversal isotropic material …

W6c825b04

Material is not valid. Condition 5 failed for transversal isotropic material …

W6c825b06

Material is not valid. Condition 7 failed for transversal isotropic material …

W6c825c00

Material is not valid. Condition 1 failed for orthotropic material …

W6c825c01

Material is not valid. Condition 2 failed for orthotropic material …

W6c825c02

Material is not valid. Condition 3 failed for orthotropic material …

W6c825c03

Material is not valid. Condition 4 failed for orthotropic material …

W6c825c04

Material is not valid. Condition 5 failed for orthotropic material …

W6c825c05

Material is not valid. Condition 6 failed for orthotropic material …

W6c825c06

Material is not valid. Condition 7 failed for orthotropic material …

W6c825c07

Material is not valid. Condition 8 failed for orthotropic material …

W6c825c08

Material is not valid. Condition 9 failed for orthotropic material …

W6c825c09

Material is not valid. Condition 10 failed for orthotropic material …

W6c825c10

Material is not valid. Condition 11 failed for orthotropic material …

W6c825c11

Material is not valid. Condition 12 failed for orthotropic material …

W6c825c12

Material is not valid. Condition 13 failed for orthotropic material …

W6493a120

The configuration file entry 'solverMaxMemory' is deprecated, please use 'complexity' instead.

W1b158cd8

Unfeasible FEM setup: Insufficient … fixed DOF.

Make sure that the model is appropriately fixated. A fixation needs to be applied in every global coordinate direction.

W1e44f6f0

Implausible FEM setup: No free DOF.

The whole Design Space is fixated so no material will be reduced.

W364cd738

Implausible FEM setup: Fixation space is poorly conditioned.

Make sure that the model is appropriately fixated. A fixation needs to be applied in every global coordinate direction.

W6d49ffc0

Unfeasible FEM setup: Missing fixation in one or more directions.

Make sure that the model is appropriately fixated. A fixation needs to be applied in every global coordinate direction.

W207f9b58

Smoothening of Isosurface data not available for …

Please contact MSC Apex Support.

W1535d930

Intermittent file system error …

The relocation of a file did not work. The simulation will continue.

W3080a2f0

Finalizing file << fn.u8string << failed

The relocation of several files did not work.

W39837ad0

Unused config entry …

The command is incorrect or was deprecated and will be not be considered in the optimization.

W7b364d00

Resolution … and complexity … specified together - ignoring complexity.

The resolution command is higher prioritised and outweighs the Complexity input.

W25081f18

Failure criterion Von Mises is not valid. The Tensile Strength is lower or equal zero for material …

Please change the material values according to the valid material conditions.

W0f25e2a0

Failure criterion Tsai Wu is not valid. One value is lower or equal zero for material …

Please change the material values according to the valid material conditions.

W7c709bf0

Failure criterion Tsai Wu is not valid. One value is lower or equal zero, or for Fxy, F_yz and F_zx not between -1 and 1 for material …

Please change the material values according to the valid material conditions.

W7b99b450

Failure criterion Tsai Hill is not valid. One value is lower or equal zero for material …

Please change the material values according to the valid material conditions.

W760ca740

Failure criterion Tsai Hill is not valid. One value is lower or equal zero for material …

Please change the material values according to the valid material conditions.

W658f5544

Adding autogenerated interface for boundary condition …

An Interface was not created for one or more boundary condition faces. For these faces an Interface was automatically generated to guarantee a satisfying result.

This will happen for every displacement constraint because the interface surface and the constraint surface do not have to be the same.

W5fa5cf20

Some events are missing preserved fixations, attempting to compensate by setting preserve on …

The optimisation will continue to run with the changes mentioned above. If these changes are not representing the model set up you anticipated, please adjust your model set up in the “Keep Non-Design Spaces” panel.

W5acd8220

Some events are missing fixations.

Adjust your model set up so that every Event has fixations in all three main directions (or local coordinate systems main direction) included.

W17b312a1

Nastran file … at … corrupted. Trying to rerun nastran

For eigenfrequency optimisations MSC Nastran is called in the background. In this case the .h5 is defect. Make sure the correct path to MSC Nastran is defined in the application settings (path to nastXXXX.exe)

W17b312a2

Nastran file … h5 not found in … Trying to rerun nastran

For eigenfrequency optimisations MSC Nastran is called in the background. In this case the .h5 couldn’t be found. Make sure the correct path to MSC Nastran is defined in the application settings (path to nastXXXX.exe)

W1ee5aa1b

First frequency … Hz is significantly below frequency constraint… Hz

The first calculated eigenfrequency of the full Design Space is lower than the chosen frequency constraint. The optimisation logic isn’t able to reduce material in this case. There is a workaround on the frequency help page.

W26473bd0

Detail specified together with either complexity or resolution - using detail for optimization

Detail and Complexity are both set. Detail is used.

W312309f8

error computing new UFI for …. voxels

Please contact MSC Apex Support.

W3203a74e

unable to remove file …

Access to a specific file was denied. The file couldn’t be deleted.

W4fb68977

symmetry not supported with frequency conditions

The hard symmetry isn’t supported for eigenfrequency optimisations.

W5b09c551

condition-based frequency-analysis event … must have at least one condition

At least one displacement constraint / fixation is needed for a eigenfrequency optimisation.

W6b26eae6

frequency failures cannot be extracted without input frequencies

MSC Nastran hasn’t found any eigenfrequencies in the given range. The optimisation continues. The first calculated eigenfrequency is much higher than the entered Frequency Constraint.

W757e1585

Could not load Nastran result for nastran frequency event. Reason …. Proceeding as if empty

MSC Nastran hasn’t found any eigenfrequencies in the given range. The optimisation continues. The first calculated eigenfrequency is much higher than the entered Frequency Constraint.

We8be37f1

Smoothing failed, mesh was not changed

The smoothing algorithm failed for this iteration. The optimisation continues.

E7f716c48

This Error is only produced after another Error was encountered. The optimisation algorithm tried to continue despite the previous Error but could not continue. The optimisation fails with this Error although the primary Error is the reason for the terminated optimisation.

E4ebe0a20

Projected memory requirement exceeds available memory - complexity … (detail …) is too high. Theoretical limit: complexity … (detail …), recommended: complexity … (detail …)

The chosen complexity value is too high to be calculated on this machine. A certain maximum complexity value is recommended. Have a look here.

Eb20f3415

boundary condition is missing elements

A Non-Design Space was removed and the applied boundary conditions are not considered

The Design Space has lost the connection to the force/constraint application point. The model is no longer complete and it doesn’t make sense to continue with the optimisation.

Make sure that the Keep Non Design function is activated. Increase the Complexity or increase the Safety Factor.

Eb20f3980

Missing config entry …

The configuration file is missing an entry or command. Please check your entries in the Advanced User Settings or if you are using the Command Line Optimisation please check the Configuration File. You can find all commands for the Advanced User Settings here and the Configuration File here.

E58799450

unexpected error writing file file_name.ply:

One of the result files cannot be written. This can happen while using parallelization (default). This can be resolved by adding following Advanced User Settings commands:

E724493a8

Unable to open file … for writing

There are no privileges to access a file which is needed. Please check where the project folder is placed in which all the results are written. Network drives and cloud storage (e.g. OneDrive) are not recommended.

E3ee97ff0

supportReductionIntensity … is out of bounds 0-10.

Please adjust the Intensity value of the Support Reduction according to the boundaries.

E449a19a0

invalid supportReductionMode … expected off, passive, reactive or active.

Please set the Support Reduction Mode to one of the supported modes.

E4a364e88

missing / incompatible strutDensity setting for use with support avoidance.

If you are using the Support Reduction, you need to define a Strut Density.

W6e184ce8

Permanently shutting down soft symmetry because all dimensions have become unsalvagably asymmetric.

Eb20f33c1

LicenseConstraintException    failed to acquire … count … instances of … feature.

A license for the GD Engine and/or the GPU calculation couldn’t be acquiered. Please check your licenses.

E0850d340

Attempted to write a checkpoint on unpaused job.

Restart file could not be written at this point in the optimisation. Please have a look at the prior error code which shows the primary reason for the failed optimisation.

E16808658

Legacy config format is disabled.

Please export the Scenario again (version 2022.1 or newer) to generate the supported json file format.

W1a123238

Symmetry coordinate systems are deprecated and will be removed in 2022.4 release. Use configuration.principalCoordinateSystem instead.

This can only happen when the configuration file was manually adjusted and a command line optimisation executed. The symmetry coordinate system has been replaced by a general principal coordinate system. Have a look at the Configuration File page for further information.

E18f03ac8

Given symmetry coordinate system and principal coordinate system conflict.

This can only happen when the configuration file was manually adjusted and a command line optimisation executed. The symmetry coordinate system has been replaced by a general principal coordinate system. Have a look at the Configuration File page for further information.

W2cc566c0

Fixed … reshaping error(s) - boundary violations … threshold exceeded …

Information message that the algorithm corrected some errors in the file. The optimisation continues as before.

E79aa1a40

Fractured design space - make sure the model consists of only a single, connected body.

Occurs mainly if no Interface is placed between Design Space and Retained Volume.

E413ccf6b

point mass … refers to non-existing geometry …

Make sure the point mass refers to a geometry.

E72deb9d2

Using RBE2 point masses with linear-static analyses is not supported yet

RBE2 isn’t supported for static load cases / events yet. It is supported for frequency load cases / events.

E7d830f0a

Point masses without position are not supported yet

A point mass has to have a defined position.

E40a1d044

Nastran directory could not be created

Please contact the MSC support.

E56b33469

Unable to export Nastran model: Incompatible FEA setup

Please contact the MSC support.

E56b33470

Unable to export Nastran model: not enough data modes

Please contact the MSC support.

E61ad1352

NastranExport.h5 formatting error: Path << path << not found in nastran data sets

Please contact the MSC support.

E53eeff00

feature … is unavailable

Please contact the MSC support.

E2f8f1750

Nastran requires paths to not contain space characters under GNU/Linux

Please do not use space characters in paths under Linux.

Escalations

E45ca3ab0

W45ca3ab0

Start candidate volume far exceeds design volume - check scaling.

One reason for a large difference between the volumes is the unit system. Make sure the start space geometry is in SI units and start the optimisation anew.

GPU Solving CUDA Solver Warnings & Errors

W5c7572a0

No operational GPU found for solving input (insufficient free memory).

Check the memory status of your GPU and terminate other programs that might affect the GPU memory.

W24850de8

Error Closing worker thread socket.

CUDA Solver is terminated although the optimisation is still running.

The optimisation will continue and fall back to local CPU solving.

Check the status of your CUDA Solver.

Please contact MSC Apex Support.