# In Situ Support

**URL:** https://discourse.paraview.org/c/in-situ-support/8.md?page=1

[Latest](https://discourse.paraview.org/latest.md) · [Categories](https://discourse.paraview.org/categories.md) · [Tags](https://discourse.paraview.org/tags.md)

**Page:** 2

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## [Building ParaView with int64 MPI enabled](https://discourse.paraview.org/t/building-paraview-with-int64-mpi-enabled/15561)

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**Author:** [@Alexandre\_Minot](https://discourse.paraview.org/u/Alexandre_Minot)\
**Replies:** 4\
**Last updated:** [October 15, 2024, 9:42pm UTC](https://discourse.paraview.org/t/building-paraview-with-int64-mpi-enabled/15561 "2024-10-15T21:42:43Z")

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Hello, We got the following error saving a slice of a large case with Catalyst. The error seems to be coming from the CGNS writer, which would have been called by the CGNS Extractor. vtkMPICommunicator.cxx:205 WARN| …

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## [Conduit Node from Catalyst Conduit Node](https://discourse.paraview.org/t/conduit-node-from-catalyst-conduit-node/15242)

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**Author:** [@Andy\_Bauer](https://discourse.paraview.org/u/Andy_Bauer)\
**Replies:** 4\
**Last updated:** [September 3, 2024, 5:07pm UTC](https://discourse.paraview.org/t/conduit-node-from-catalyst-conduit-node/15242 "2024-09-03T17:07:27Z")

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Is there a way to get a conduit Node from a catalyst\_conduit Node in Python?

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## [catalyst\_execute returns catalyst\_status\_ok even if pipeline execution fails](https://discourse.paraview.org/t/catalyst-execute-returns-catalyst-status-ok-even-if-pipeline-execution-fails/15289)

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**Author:** [@gsabhishek](https://discourse.paraview.org/u/gsabhishek)\
**Replies:** 2\
**Last updated:** [August 26, 2024, 7:45am UTC](https://discourse.paraview.org/t/catalyst-execute-returns-catalyst-status-ok-even-if-pipeline-execution-fails/15289 "2024-08-26T07:45:34Z")

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I noticed that the catalyst\_execute returns a catalyst\_status\_ok even if a pipeline execute fails. Is there any plan in future, to return an error code when ExecutePipelines fails ? I was thinking of returning a false …

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## [Multi-block inspector with simple](https://discourse.paraview.org/t/multi-block-inspector-with-simple/13801)

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**Author:** [@Kim\_Namhyun](https://discourse.paraview.org/u/Kim_Namhyun)\
**Replies:** 0\
**Last updated:** [January 26, 2024, 6:13am UTC](https://discourse.paraview.org/t/multi-block-inspector-with-simple/13801 "2024-01-26T06:13:36Z")

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Firstly, thank you for all who help me everytime I post question here. I have simple question. I just curious if it is possible to use multi-block inspector with paraivew.simple module? In paraview, multi-block inspec…

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## [Missing support for coordset fields in Mesh blueprint](https://discourse.paraview.org/t/missing-support-for-coordset-fields-in-mesh-blueprint/14077)

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**Author:** [@utkarsh.ayachit](https://discourse.paraview.org/u/utkarsh.ayachit)\
**Replies:** 3\
**Last updated:** [May 31, 2024, 1:55pm UTC](https://discourse.paraview.org/t/missing-support-for-coordset-fields-in-mesh-blueprint/14077 "2024-05-31T13:55:01Z")

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To understand the issue, let’s take a look at a typical Unstructured Grid blueprint for specifying data arrays associated with points. coordsets: coords0: type: "explicit" values: x: \[....\] …

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## [Subsetting Data for in situ visualization](https://discourse.paraview.org/t/subsetting-data-for-in-situ-visualization/14675)

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**Author:** [@Muzafarwani](https://discourse.paraview.org/u/Muzafarwani)\
**Replies:** 1\
**Last updated:** [May 21, 2024, 9:48am UTC](https://discourse.paraview.org/t/subsetting-data-for-in-situ-visualization/14675 "2024-05-21T09:48:43Z")

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I want to know can Paraview/Catalyst handle a scenario where Paraview is used for in situ visualization and a mesh is defined for a variable and visualization happens for x time steps out of N time steps for one variable…

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## [Paraview 5.12 MacOS build missing paraview.simple.Conduit](https://discourse.paraview.org/t/paraview-5-12-macos-build-missing-paraview-simple-conduit/14642)

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**Author:** [@jappa](https://discourse.paraview.org/u/jappa)\
**Replies:** 7\
**Last updated:** [May 21, 2024, 9:12am UTC](https://discourse.paraview.org/t/paraview-5-12-macos-build-missing-paraview-simple-conduit/14642 "2024-05-21T09:12:30Z")

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Hi Before I attempt to build paraview on MacOS from source, is there any reason why the MacOS build from the download link does not include paraview.simple.Conduit? I am attempting to connect a paraview client on MacOS…

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## [Not able to set flag for track order while creating a group.](https://discourse.paraview.org/t/not-able-to-set-flag-for-track-order-while-creating-a-group/14496)

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**Author:** [@mrx](https://discourse.paraview.org/u/mrx)\
**Replies:** 5\
**Last updated:** [April 26, 2024, 7:58am UTC](https://discourse.paraview.org/t/not-able-to-set-flag-for-track-order-while-creating-a-group/14496 "2024-04-26T07:58:30Z")

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Hi, I am trying to create VTKHDF group with track order flag(like we do in python). I am creating a C++ API, so trying to add the flags while creating a group. I tried to use both C++ based and C based functions from H…

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## [View mode shapes - Error opening file &returned failure for request](https://discourse.paraview.org/t/view-mode-shapes-error-opening-file-returned-failure-for-request/14455)

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**Author:** [@Heike1](https://discourse.paraview.org/u/Heike1)\
**Replies:** 1\
**Last updated:** [April 22, 2024, 9:26am UTC](https://discourse.paraview.org/t/view-mode-shapes-error-opening-file-returned-failure-for-request/14455 "2024-04-22T09:26:15Z")

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Dear reader, I am new to ParaView. I am playing around with OpenFast ( NREL open-source wind turbine simulation tool) and trying to visualize different states. Some representations work really well :slight\_smile: Howe…

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## [Not able to Visualise PointData/CellData in Paraview](https://discourse.paraview.org/t/not-able-to-visualise-pointdata-celldata-in-paraview/14325)

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**Author:** [@mrx](https://discourse.paraview.org/u/mrx)\
**Replies:** 7\
**Last updated:** [April 4, 2024, 7:03am UTC](https://discourse.paraview.org/t/not-able-to-visualise-pointdata-celldata-in-paraview/14325 "2024-04-04T07:03:34Z")

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Hi, I am creating a vtkhdf writer. Although I am able to load the geometry in Paraview, but I am not able to see the datasets in PointData/CellData. I am creating a MultiBlockDataSet with UnstructuredGrid data inside of…

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## [How to change orientation of skybox with paraview (like vtk renderer)](https://discourse.paraview.org/t/how-to-change-orientation-of-skybox-with-paraview-like-vtk-renderer/13758)

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**Author:** [@Kim\_Namhyun](https://discourse.paraview.org/u/Kim_Namhyun)\
**Replies:** 6\
**Last updated:** [January 26, 2024, 6:16am UTC](https://discourse.paraview.org/t/how-to-change-orientation-of-skybox-with-paraview-like-vtk-renderer/13758 "2024-01-26T06:16:55Z")

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I am testing skybox with python paraview.simple I notice that orientation up of skybox is always Y-axis. (I expect that Z-axis) So, when I load 3d model skybox looks like being ratated. I found the solution with vtk r…

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## [Conduit Data Source](https://discourse.paraview.org/t/conduit-data-source/13770)

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**Author:** [@utkarsh.ayachit](https://discourse.paraview.org/u/utkarsh.ayachit)\
**Replies:** 2\
**Last updated:** [January 23, 2024, 1:37pm UTC](https://discourse.paraview.org/t/conduit-data-source/13770 "2024-01-23T13:37:31Z")

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CATALYST\_DATA\_DUMPS is an excellent way to debug catalyst instrumentation. When set, catalyst dumps out all conduit datasets to a directory and then one is expected to use catalyst\_replay to replay the simulation. What I…

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## [Catalyst super slow with Live Visualization](https://discourse.paraview.org/t/catalyst-super-slow-with-live-visualization/13694)

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**Author:** [@Juan\_Jose\_Casafranca](https://discourse.paraview.org/u/Juan_Jose_Casafranca)\
**Replies:** 15\
**Last updated:** [January 23, 2024, 9:51am UTC](https://discourse.paraview.org/t/catalyst-super-slow-with-live-visualization/13694 "2024-01-23T09:51:34Z")

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I am trying to perform live visualization using Catalyst. I was having some issues with my simulation code, so I decided to test the Catalyst grid example. https://gitlab.kitware.com/paraview/paraview/-/tree/master/Exam…

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## [Supporting arbitrary schemas with programmable conduit-based producer](https://discourse.paraview.org/t/supporting-arbitrary-schemas-with-programmable-conduit-based-producer/13759)

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**Author:** [@utkarsh.ayachit](https://discourse.paraview.org/u/utkarsh.ayachit)\
**Replies:** 3\
**Last updated:** [January 22, 2024, 5:27pm UTC](https://discourse.paraview.org/t/supporting-arbitrary-schemas-with-programmable-conduit-based-producer/13759 "2024-01-22T17:27:44Z")

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I am working on a Fortran code and attempting to use Catalyst to pass the along for insitu processing. My final objective is multi-pronged, I am potentially looking into developing custom catalyst implementations for tar…

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## [Multimesh protocol show nothing in ParaView](https://discourse.paraview.org/t/multimesh-protocol-show-nothing-in-paraview/13686)

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**Author:** [@Juan\_Jose\_Casafranca](https://discourse.paraview.org/u/Juan_Jose_Casafranca)\
**Replies:** 2\
**Last updated:** [January 15, 2024, 2:35pm UTC](https://discourse.paraview.org/t/multimesh-protocol-show-nothing-in-paraview/13686 "2024-01-15T14:35:41Z")

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I am trying to show my simulation in ParaView. I am using the multimesh protocol as my data is organized hierarchically. However, I can’t see anything ParaView. The dataset I received is completely empty. My conduit nod…

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## [Transient aware extractor](https://discourse.paraview.org/t/transient-aware-extractor/13680)

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**Author:** [@Juan\_Jose\_Casafranca](https://discourse.paraview.org/u/Juan_Jose_Casafranca)\
**Replies:** 2\
**Last updated:** [January 12, 2024, 10:08am UTC](https://discourse.paraview.org/t/transient-aware-extractor/13680 "2024-01-12T10:08:08Z")

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I am preparing my simulation code to use catalyst. I use the multimesh protocol representing a hierarchy of vtkUnstructuredGrid. I have two use cases: First, I want to perform live visualization, as I sometimes debug t…

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## [vtkMultiBlockDataSet with vtkUnstructuredGrid blueprint](https://discourse.paraview.org/t/vtkmultiblockdataset-with-vtkunstructuredgrid-blueprint/13668)

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**Author:** [@Juan\_Jose\_Casafranca](https://discourse.paraview.org/u/Juan_Jose_Casafranca)\
**Replies:** 8\
**Last updated:** [January 11, 2024, 6:19pm UTC](https://discourse.paraview.org/t/vtkmultiblockdataset-with-vtkunstructuredgrid-blueprint/13668 "2024-01-11T18:19:25Z")

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I have a simulation where I have several solid objects organized hierarchically (for example, wheels of a car). I want to enable live visualization using catalyst, and I want to create a vtkMultiBlockDataset hierarchy wi…

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## [Catalyst2: Artifacts on Processes Boundaries](https://discourse.paraview.org/t/catalyst2-artifacts-on-processes-boundaries/13489)

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**Author:** [@cartagena](https://discourse.paraview.org/u/cartagena)\
**Replies:** 4\
**Last updated:** [December 14, 2023, 1:44pm UTC](https://discourse.paraview.org/t/catalyst2-artifacts-on-processes-boundaries/13489 "2023-12-14T13:44:45Z")

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I am trying to visualize a particle simulation with in-situ Catalyst2 support, and while it is correct on single core (produced image is consistent with what ParaView creates), in multi-core setting I am getting artifact…

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## [Starting pvserver with mpirun](https://discourse.paraview.org/t/starting-pvserver-with-mpirun/13419)

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**Author:** [@tladd](https://discourse.paraview.org/u/tladd)\
**Replies:** 2\
**Last updated:** [December 3, 2023, 8:42pm UTC](https://discourse.paraview.org/t/starting-pvserver-with-mpirun/13419 "2023-12-03T20:42:05Z")

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I have extracted the paraview binaries from the latest release ParaView-5.12.0-RC1-MPI-Linux-Python3.10-x86\_64/ I can view remotely using pvserver + paraview, but I cannot start pvserver in parallel. It tries to open …

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## [Paraview Output Data Issue](https://discourse.paraview.org/t/paraview-output-data-issue/13372)

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**Author:** [@liu\_amber](https://discourse.paraview.org/u/liu_amber)\
**Replies:** 0\
**Last updated:** [November 29, 2023, 10:01am UTC](https://discourse.paraview.org/t/paraview-output-data-issue/13372 "2023-11-29T10:01:28Z")

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Hello Paraview users, I am currently using REEF3D and visualizing my simulation results through Paraview. In dealing with 3D problems, I have used filters to select “Integrate Variables” in data analysis, obtaining wate…

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## [Catalyst2 and ascent](https://discourse.paraview.org/t/catalyst2-and-ascent/13223)

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**Author:** [@zetwal](https://discourse.paraview.org/u/zetwal)\
**Replies:** 11\
**Last updated:** [November 20, 2023, 7:17pm UTC](https://discourse.paraview.org/t/catalyst2-and-ascent/13223 "2023-11-20T19:17:49Z")

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Hello Is there an example of catayst2 working with an ascent backend?

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## [Create a channel for vtkMultiBlock](https://discourse.paraview.org/t/create-a-channel-for-vtkmultiblock/13264)

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**Author:** [@robertsawko](https://discourse.paraview.org/u/robertsawko)\
**Replies:** 3\
**Last updated:** [November 17, 2023, 11:33am UTC](https://discourse.paraview.org/t/create-a-channel-for-vtkmultiblock/13264 "2023-11-17T11:33:20Z")

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Hello, I am writing a Catalyst2 adapter for a particle-in-cell code. Catalyst has channels to pass different type of information. My original idea was to have a channel for mesh and for particle separately, but then I r…

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## [Catalyst2 and grouping output](https://discourse.paraview.org/t/catalyst2-and-grouping-output/13224)

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**Author:** [@zetwal](https://discourse.paraview.org/u/zetwal)\
**Replies:** 3\
**Last updated:** [November 10, 2023, 4:36pm UTC](https://discourse.paraview.org/t/catalyst2-and-grouping-output/13224 "2023-11-10T16:36:59Z")

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Hello I’m using the gridwriter.py sample script to write data out from Catalyst. The issue is as the number of ranks increases, the number of output files also goes up. Is there a way to group data from several ranks to…

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## [\[Catalyst2|MeshBlueprint\] multiple meshes that share vertices](https://discourse.paraview.org/t/catalyst2-meshblueprint-multiple-meshes-that-share-vertices/8971)

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**Author:** [@menno](https://discourse.paraview.org/u/menno)\
**Replies:** 1\
**Last updated:** [November 1, 2023, 5:09pm UTC](https://discourse.paraview.org/t/catalyst2-meshblueprint-multiple-meshes-that-share-vertices/8971 "2023-11-01T17:09:21Z")

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Is it possible to define multiple meshes/blocks that share the same vertices array? In our case we have a single list of vertices, from which we define the volume cells (as polyhedra) but also all the boundaries (as poly…

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## [Catalyst 2.0 Documentation Resources 📑](https://discourse.paraview.org/t/catalyst-2-0-documentation-resources/13142)

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**Author:** [@Christos\_Tsolakis](https://discourse.paraview.org/u/Christos_Tsolakis)\
**Replies:** 0\
**Last updated:** [October 30, 2023, 5:29pm UTC](https://discourse.paraview.org/t/catalyst-2-0-documentation-resources/13142 "2023-10-30T17:29:03Z")

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A number of new and updated documentation resources have been created or updated for Catalyst 2.0 and the ParaViewCatalyst implementation: Catalyst 2.0: Documentation about the base Catalyst library, the backbone of all…

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## [Catalyst Adios without MPI](https://discourse.paraview.org/t/catalyst-adios-without-mpi/13006)

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**Author:** [@Juan\_Jose\_Casafranca](https://discourse.paraview.org/u/Juan_Jose_Casafranca)\
**Replies:** 8\
**Last updated:** [October 10, 2023, 8:28am UTC](https://discourse.paraview.org/t/catalyst-adios-without-mpi/13006 "2023-10-10T08:28:33Z")

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I am trying to use AdiosCatalyst (https://gitlab.kitware.com/paraview/adioscatalyst) in my simulation to perform in situ visualization. In order to do so, I have compiled catalyst (https://gitlab.kitware.com/paraview/ca…

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## [how you use python script to hide a block selected](https://discourse.paraview.org/t/how-you-use-python-script-to-hide-a-block-selected/12874)

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**Author:** [@ntian](https://discourse.paraview.org/u/ntian)\
**Replies:** 9\
**Last updated:** [September 20, 2023, 1:00pm UTC](https://discourse.paraview.org/t/how-you-use-python-script-to-hide-a-block-selected/12874 "2023-09-20T13:00:56Z")

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With the blocks created, could i use python script to hide a selected block. I am using the following code to find the block 0, and do not know how to hide it. Thank you for the help active\_source = paraview.simple.Get…

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## [Are print statements disabled on non zero ranks in python pipelines?](https://discourse.paraview.org/t/are-print-statements-disabled-on-non-zero-ranks-in-python-pipelines/12787)

<div class="topic-metadata">

**Author:** [@Alexandre\_Minot](https://discourse.paraview.org/u/Alexandre_Minot)\
**Replies:** 4\
**Last updated:** [September 13, 2023, 8:06pm UTC](https://discourse.paraview.org/t/are-print-statements-disabled-on-non-zero-ranks-in-python-pipelines/12787 "2023-09-13T20:06:42Z")

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I have the following code in my python script: if(rank == 0): print("print from rank 0") os.system("echo echo rank 0") comm.Barrier() if(rank == 1): print("print from rank 1") os.system("echo echo rank 1…

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## [Catalyst 2: Add Fortran examples](https://discourse.paraview.org/t/catalyst-2-add-fortran-examples/7541)

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**Author:** [@gha3mi](https://discourse.paraview.org/u/gha3mi)\
**Replies:** 6\
**Last updated:** [August 17, 2023, 2:55pm UTC](https://discourse.paraview.org/t/catalyst-2-add-fortran-examples/7541 "2023-08-17T14:55:41Z")

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I would like to use Paraview Catalyst in my Fortran project. Could you give me an example or would you please help me prepare an example?

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## [TimeStep instead of TimeValue for File Name](https://discourse.paraview.org/t/timestep-instead-of-timevalue-for-file-name/12628)

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**Author:** [@jameil\_k](https://discourse.paraview.org/u/jameil_k)\
**Replies:** 1\
**Last updated:** [August 9, 2023, 4:31pm UTC](https://discourse.paraview.org/t/timestep-instead-of-timevalue-for-file-name/12628 "2023-08-09T16:31:43Z")

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Hi! How can change the File Name of the catalyst extractor to TimeValue instead of TimeStep? Thanks!

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