# Computational Model Builder (CMB)

**URL:** https://discourse.kitware.com/c/cmb/7.md

[Latest](https://discourse.kitware.com/latest.md) · [Categories](https://discourse.kitware.com/categories.md)

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## [About the Computational Model Builder (CMB) category](https://discourse.kitware.com/t/about-the-computational-model-builder-cmb-category/74)

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**Author:** [@brad.davis](https://discourse.kitware.com/u/brad.davis)\
**Replies:** 1\
**Last updated:** [April 7, 2018, 7:53pm UTC](https://discourse.kitware.com/t/about-the-computational-model-builder-cmb-category/74 "2018-04-07T19:53:21Z")

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Computational Model Builder is a suite of applications built on ParaView and SMTK to help you prepare and submit simulations.

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## [Correct way to use CPack to distribute binaries](https://discourse.kitware.com/t/correct-way-to-use-cpack-to-distribute-binaries/889)

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**Author:** [@Yang](https://discourse.kitware.com/u/Yang)\
**Replies:** 2\
**Last updated:** [December 25, 2025, 12:44pm UTC](https://discourse.kitware.com/t/correct-way-to-use-cpack-to-distribute-binaries/889 "2025-12-25T12:44:19Z")

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Hi CMB community, I am new to CPack and I would like to learn it. I see that CMB superbuild has CPack rules implemented but I didn’t find any documentation of how to properly use it. Here is what I found out. There is…

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## [Installing CMB Superbuilder](https://discourse.kitware.com/t/installing-cmb-superbuilder/1652)

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**Author:** [@Kayra](https://discourse.kitware.com/u/Kayra)\
**Replies:** 0\
**Last updated:** [November 30, 2025, 4:10pm UTC](https://discourse.kitware.com/t/installing-cmb-superbuilder/1652 "2025-11-30T16:10:28Z")

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Hello. I am trying to install CMB Superbuilder on Ubuntu 22.04 to use it with the RGG plugin for reactor core design, but I am new to Linux and I am encountering some compilation errors. How can I resolve it? Best Regar…

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## [pvpython and pvbatch executables are not created in the standalone build of CMB](https://discourse.kitware.com/t/pvpython-and-pvbatch-executables-are-not-created-in-the-standalone-build-of-cmb/1646)

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**Author:** [@CsatiZoltan](https://discourse.kitware.com/u/CsatiZoltan)\
**Replies:** 5\
**Last updated:** [November 18, 2025, 4:43pm UTC](https://discourse.kitware.com/t/pvpython-and-pvbatch-executables-are-not-created-in-the-standalone-build-of-cmb/1646 "2025-11-18T16:43:47Z")

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I built the standalone version of CMB, relying on the superbuild of SMTK. My bin directory only contains modelbuilder.conf and the modelbuilder executable. On the other hand, if I build CMB as part of the superbuild, th…

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## [Undo/redo in CMB](https://discourse.kitware.com/t/undo-redo-in-cmb/1647)

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**Author:** [@CsatiZoltan](https://discourse.kitware.com/u/CsatiZoltan)\
**Replies:** 2\
**Last updated:** [November 16, 2025, 7:46am UTC](https://discourse.kitware.com/t/undo-redo-in-cmb/1647 "2025-11-16T07:46:52Z")

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Is there a way to undo (and potentially redo) an operation in CMB? As a concrete example: I select multiple entities in the resources and then assign a colour to them. Then I deselect the entities and perform other oper…

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## [Glitches when assigning colors](https://discourse.kitware.com/t/glitches-when-assigning-colors/1643)

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**Author:** [@CsatiZoltan](https://discourse.kitware.com/u/CsatiZoltan)\
**Replies:** 4\
**Last updated:** [November 12, 2025, 5:27pm UTC](https://discourse.kitware.com/t/glitches-when-assigning-colors/1643 "2025-11-12T17:27:48Z")

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I use the operation smtk::operation::AssignColors in the Operations panel of CMB to assign colors to selected faces. As demonstrated in the video below on the example data file data/model/3d/netcdf/pillbox.ncdf of SMTK, …

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## [Cell and point selection does not work in CMB on SMTK file](https://discourse.kitware.com/t/cell-and-point-selection-does-not-work-in-cmb-on-smtk-file/1639)

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**Author:** [@CsatiZoltan](https://discourse.kitware.com/u/CsatiZoltan)\
**Replies:** 4\
**Last updated:** [November 5, 2025, 2:17pm UTC](https://discourse.kitware.com/t/cell-and-point-selection-does-not-work-in-cmb-on-smtk-file/1639 "2025-11-05T14:17:32Z")

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Hi, I would like to select cells or points in a discrete model imported into CMB. As an example, I considered the knee.smtk file shipped with CMB. I open it in CMB. I can select blocks with the “Select Block” command, b…

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## [Upcoming Live CMB Webinar with Kitware](https://discourse.kitware.com/t/upcoming-live-cmb-webinar-with-kitware/1558)

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**Author:** [@NickBearup](https://discourse.kitware.com/u/NickBearup)\
**Replies:** 0\
**Last updated:** [September 22, 2025, 4:52pm UTC](https://discourse.kitware.com/t/upcoming-live-cmb-webinar-with-kitware/1558 "2025-09-22T16:52:15Z")

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In two weeks, on October 8th, Kitware will be hosting a free live webinar, “Making Waves With Computational Model Builder”. This webinar will be hosted from 12:00pm - 1:00pm EST, and will show you how CMB can transform y…

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## [CMB 3D modeling](https://discourse.kitware.com/t/cmb-3d-modeling/1254)

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**Author:** [@Tomas\_Ribeiro](https://discourse.kitware.com/u/Tomas_Ribeiro)\
**Replies:** 45\
**Last updated:** [May 10, 2024, 2:05pm UTC](https://discourse.kitware.com/t/cmb-3d-modeling/1254 "2024-05-10T14:05:22Z")

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Hi. I´ve been working with the CMB2d example (ModelBuilder-2D — ModelBuilder-2D 1.0.0 documentation), and it seems to work very well. My question is: can I create a custom application (or, more specifically, how would I …

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## [Struggle to get the windtunnel modelbuilder running properly](https://discourse.kitware.com/t/struggle-to-get-the-windtunnel-modelbuilder-running-properly/1230)

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**Author:** [@julien-siguenza](https://discourse.kitware.com/u/julien-siguenza)\
**Replies:** 21\
**Last updated:** [March 15, 2024, 12:15pm UTC](https://discourse.kitware.com/t/struggle-to-get-the-windtunnel-modelbuilder-running-properly/1230 "2024-03-15T12:15:17Z")

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Hi everybody, I am starting using Computational Model Builder and I have some troubles to understand properly how it works. I am working on a Windows11 system with an Ubuntu 22.04 distribution installed trough WSL : I…

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## [Custom Application](https://discourse.kitware.com/t/custom-application/1008)

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**Author:** [@Muhammad\_Saad\_Atique](https://discourse.kitware.com/u/Muhammad_Saad_Atique)\
**Replies:** 16\
**Last updated:** [March 24, 2023, 5:29pm UTC](https://discourse.kitware.com/t/custom-application/1008 "2023-03-24T17:29:41Z")

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Can we create a custom application/gui using CMB like we can in ParaView?

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## [CMB ModelBuilder 23.01 has been released!](https://discourse.kitware.com/t/cmb-modelbuilder-23-01-has-been-released/986)

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**Author:** [@Bob\_Obara](https://discourse.kitware.com/u/Bob_Obara)\
**Replies:** 0\
**Last updated:** [February 24, 2023, 4:00pm UTC](https://discourse.kitware.com/t/cmb-modelbuilder-23-01-has-been-released/986 "2023-02-24T16:00:17Z")

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You can find more information here.

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## [Save state in post-processing](https://discourse.kitware.com/t/save-state-in-post-processing/884)

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**Author:** [@Yang](https://discourse.kitware.com/u/Yang)\
**Replies:** 1\
**Last updated:** [September 19, 2022, 5:56pm UTC](https://discourse.kitware.com/t/save-state-in-post-processing/884 "2022-09-19T17:56:23Z")

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Hi, I created a resource in AEVA and several filters in Post-processing mode. When I save the state and load it back to AEVA, the resource can’t be read correctly with the following message. ( 53.465s) \[paraview …

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## [Need help on superbuild](https://discourse.kitware.com/t/need-help-on-superbuild/874)

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**Author:** [@Yang](https://discourse.kitware.com/u/Yang)\
**Replies:** 8\
**Last updated:** [August 12, 2022, 5:09pm UTC](https://discourse.kitware.com/t/need-help-on-superbuild/874 "2022-08-12T17:09:26Z")

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Dear CMB team, I am having some weird issues with cmb-superbuild. I am executing the following cmake command. Executing command: "C:\\Program Files\\CMake\\bin\\cmake.EXE" --no-warn-unused-cli -DSUPERBUILD\_PACKAGE\_MODE:ST…

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## [How does CMake find all the dependencies installed by cmb-superbuild?](https://discourse.kitware.com/t/how-does-cmake-find-all-the-dependencies-installed-by-cmb-superbuild/862)

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**Author:** [@Yang](https://discourse.kitware.com/u/Yang)\
**Replies:** 6\
**Last updated:** [July 14, 2022, 6:06pm UTC](https://discourse.kitware.com/t/how-does-cmake-find-all-the-dependencies-installed-by-cmb-superbuild/862 "2022-07-14T18:06:19Z")

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Dear CMB community, I am using superbuild to build all the dependencies. I followed the setup on Windows where \<path\_to\_cmb\_superbuild\_install\>/install/bin and \<path\_to\_cmb\_superbuild\_install\>/install/Python are added t…

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## [CMB ModelBuilder 22.04 has been released!](https://discourse.kitware.com/t/cmb-modelbuilder-22-04-has-been-released/833)

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**Author:** [@Bob\_Obara](https://discourse.kitware.com/u/Bob_Obara)\
**Replies:** 1\
**Last updated:** [May 21, 2022, 7:27am UTC](https://discourse.kitware.com/t/cmb-modelbuilder-22-04-has-been-released/833 "2022-05-21T07:27:41Z")

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You can find more information here.

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## [CMB ModelBuilder 21.12 has been released!](https://discourse.kitware.com/t/cmb-modelbuilder-21-12-has-been-released/751)

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**Author:** [@Bob\_Obara](https://discourse.kitware.com/u/Bob_Obara)\
**Replies:** 0\
**Last updated:** [December 30, 2021, 6:23pm UTC](https://discourse.kitware.com/t/cmb-modelbuilder-21-12-has-been-released/751 "2021-12-30T18:23:39Z")

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Please see here for the latest release notes.

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## [CMB Road Map 2021](https://discourse.kitware.com/t/cmb-road-map-2021/631)

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**Author:** [@Bob\_Obara](https://discourse.kitware.com/u/Bob_Obara)\
**Replies:** 1\
**Last updated:** [April 23, 2021, 3:06pm UTC](https://discourse.kitware.com/t/cmb-road-map-2021/631 "2021-04-23T15:06:42Z")

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This topic focuses on changes planned for CMB ModelBuilder. The current target is to have these changes in place by April 30, 2022. Since CMB ModelBuilder directly depends on features / changes to SMTK, this roadmap mus…

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## [ModelBuilder Default Layout](https://discourse.kitware.com/t/modelbuilder-default-layout/287)

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**Author:** [@kellie.corona](https://discourse.kitware.com/u/kellie.corona)\
**Replies:** 5\
**Last updated:** [October 29, 2020, 4:33pm UTC](https://discourse.kitware.com/t/modelbuilder-default-layout/287 "2020-10-29T16:33:04Z")

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We are currently working on updating the ModelBuilder documentation. As part of this process, I am looking for input on the default layout of ModelBuilder. Here is one suggestions I have received so far: I’d appreci…

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## [macOS deployment target](https://discourse.kitware.com/t/macos-deployment-target/353)

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**Author:** [@ben.boeckel](https://discourse.kitware.com/u/ben.boeckel)\
**Replies:** 0\
**Last updated:** [November 26, 2019, 6:25pm UTC](https://discourse.kitware.com/t/macos-deployment-target/353 "2019-11-26T18:25:06Z")

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Currently, 10.13 (High Sierra) is the oldest supported release. We may have dashboards targeting older versions that should be updated to use 10.13 as their targeted version. ParaView policy is to only support what Apple…

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## [Configuration file locations](https://discourse.kitware.com/t/configuration-file-locations/227)

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**Author:** [@tj.corona](https://discourse.kitware.com/u/tj.corona)\
**Replies:** 4\
**Last updated:** [March 6, 2019, 5:02pm UTC](https://discourse.kitware.com/t/configuration-file-locations/227 "2019-03-06T17:02:11Z")

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The ModelBuilder (and ParaView) user settings directories are determined by the following logic (from ParaView’s vtkInitializationHelper\`): Windows: ${APPDATA}/\<APPLICATION\_NAME\>/\<ORGANIZATION\_NAME\>/\* \*NIX: ${XDG\_CO…

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## [CMB v6.0](https://discourse.kitware.com/t/cmb-v6-0/197)

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**Author:** [@tj.corona](https://discourse.kitware.com/u/tj.corona)\
**Replies:** 3\
**Last updated:** [January 10, 2019, 11:24pm UTC](https://discourse.kitware.com/t/cmb-v6-0/197 "2019-01-10T23:24:58Z")

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I am happy to announce that CMB 6.0.0 Release Candidate 1 has now been tagged. The source is available here and binaries will me made available within the next couple of days. Please let us know if you run into any probl…

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## [Updating SMTK on CMB master and release](https://discourse.kitware.com/t/updating-smtk-on-cmb-master-and-release/204)

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**Author:** [@tj.corona](https://discourse.kitware.com/u/tj.corona)\
**Replies:** 0\
**Last updated:** [December 20, 2018, 8:59pm UTC](https://discourse.kitware.com/t/updating-smtk-on-cmb-master-and-release/204 "2018-12-20T20:59:52Z")

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I wanted this to be written down in a place where all who contribute can find it when they need it. CMB has a master and a release branch, and each has a submodule that tracks its respective SMTK branch. The right way to…

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## [Updates to the build system](https://discourse.kitware.com/t/updates-to-the-build-system/201)

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**Author:** [@tj.corona](https://discourse.kitware.com/u/tj.corona)\
**Replies:** 7\
**Last updated:** [December 12, 2018, 7:23pm UTC](https://discourse.kitware.com/t/updates-to-the-build-system/201 "2018-12-12T19:23:48Z")

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After smtk 3.0 and cmb 6.0 are released, I would like to refactor how these two projects are built and tested. Here is a simplified description of the current design: SMTK contains a core library with unit tests cont…

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## [Bring RGG session into CMB6 Design Discussion](https://discourse.kitware.com/t/bring-rgg-session-into-cmb6-design-discussion/192)

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**Author:** [@Haocheng\_Liu](https://discourse.kitware.com/u/Haocheng_Liu)\
**Replies:** 8\
**Last updated:** [December 4, 2018, 9:22pm UTC](https://discourse.kitware.com/t/bring-rgg-session-into-cmb6-design-discussion/192 "2018-12-04T21:22:33Z")

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Reactor modeling capability is introduced into SMTK2 and CMB5. Since now SMTK3&CMB6 should be released anytime soon, this topic is targeted to discuss the functionality and limitation of current rgg(AKA reactor geometry …

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## [New modelbuilder plugin for projects](https://discourse.kitware.com/t/new-modelbuilder-plugin-for-projects/176)

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**Author:** [@johnt](https://discourse.kitware.com/u/johnt)\
**Replies:** 1\
**Last updated:** [December 4, 2018, 2:31pm UTC](https://discourse.kitware.com/t/new-modelbuilder-plugin-for-projects/176 "2018-12-04T14:31:06Z")

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Now that I have started using CMB 6, I think we need to provide naive users more help with building simulation inputs. I propose to do this by adding a “project plugin” to handle most of the resource and other data manag…

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## [Packages](https://discourse.kitware.com/t/packages/167)

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**Author:** [@dcthomp](https://discourse.kitware.com/u/dcthomp)\
**Replies:** 3\
**Last updated:** [October 15, 2018, 1:40pm UTC](https://discourse.kitware.com/t/packages/167 "2018-10-15T13:40:39Z")

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Hi all, I see that a windows package for cmb was pushed last night! Can someone with a Windows box test it? @tj.corona you were trying to justify your laptop yesterday… :slight\_smile: I will submit a MR for the docs th…

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## [Discussion on CMB 6.0 UI Design](https://discourse.kitware.com/t/discussion-on-cmb-6-0-ui-design/162)

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**Author:** [@Bob\_Obara](https://discourse.kitware.com/u/Bob_Obara)\
**Replies:** 0\
**Last updated:** [October 3, 2018, 2:09am UTC](https://discourse.kitware.com/t/discussion-on-cmb-6-0-ui-design/162 "2018-10-03T02:09:56Z")

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As we finish the core functionality of CMB 6.0 and SMTK 3.0 we need to review the current GUI and see where improvements can be made both in the near term and long term time frames in order to improve usability. Your in…

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## [CMB6 - Access resource in related operator?](https://discourse.kitware.com/t/cmb6-access-resource-in-related-operator/143)

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**Author:** [@chart3388](https://discourse.kitware.com/u/chart3388)\
**Replies:** 6\
**Last updated:** [August 22, 2018, 7:53pm UTC](https://discourse.kitware.com/t/cmb6-access-resource-in-related-operator/143 "2018-08-22T19:53:53Z")

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Hi Guys, SMTK / CM question, I am able to create a resource through the Operator panel and assign session in my operator # Create malone Resource rsrc = cheers.malone.Resource.create() # Assign malone sessi…

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## [CMB6 - New Resource operateInternal()](https://discourse.kitware.com/t/cmb6-new-resource-operateinternal/144)

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**Author:** [@chart3388](https://discourse.kitware.com/u/chart3388)\
**Replies:** 4\
**Last updated:** [August 22, 2018, 7:52pm UTC](https://discourse.kitware.com/t/cmb6-new-resource-operateinternal/144 "2018-08-22T19:52:06Z")

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Hi Guys, I am trying to create resource from File -\> New Resource -\> Malone. I am able to open the dialog box, populate the dialog box but when I click apply I am not able to use the operateInternal() function. IE I am …

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