Catalyst2 and ascent

In Situ Support
1

Hello

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

2

Are you asking if Ascent Insitu will support the catalyst2 API?
Ascent is a different project than ParaView, you may want to ask this on their discussion board.

Somewhat orthogonal to your question, we are working to build a catalyst2 backend inside paraview that responds to ascent actions.

3

Hi Dan

In Catalyst 2, there is "node[“catalyst_load/implementation”] = “xxx”. Up to now, I’ve been using paraview for xxx. I’m wondering if “ascent” is now supported?

I heard that there was some work going on to support that and I was wondering what the status is and where I can get more information.

4

Hi Pascal,
That was the first part of my answer. You should check that with Ascent developers.Seems this is where you could ask this question:
https://github.com/Alpine-DAV/ascent/discussions

Dan

5

That sounds good. I’ll check there and come back here if there are issues.

6

I talked to Cyrus and found examples at: https://github.com/Alpine-DAV/ascent/tree/v0.9.2/src/examples/ascent-catalyst-mpi

7

Great. Thanks for sharing this. Good to know Ascent is providing a catalyst2 interface.

8

I am using the spack build of libcatalyst; libcatalyst@2.0.0-rc3, and it has the following libraries:
libcatalyst-paraview.so libcatalyst-stub.so libcatalyst-vtk.so

However, ascent is looking for libcatalyst-ascent.so.

I tried to build libcatalyst from https://gitlab.kitware.com/paraview/catalyst and that gave me:
libcatalyst-double.so libcatalyst-external_conduit.so libcatalyst-internal_conduit.so libcatalyst-stub.so in install/lib64/catalyst

How do I get libcatalyst-ascent.so?

9

While libcatalyst provides the API, the actual implementation would be provided by Ascent. So look inside an Ascent build or install dir.

10

Hey Pascal,
The way to generate libcatalyst-ascent.so is to build ascent with the necessary paths.
If you have installed Catalyst, then you’ll provide -DCATALYST_DIR=<path to catalyst> while building Ascent. Let me know if it works for you.
Unfortunately, I don’t think the Ascent built using Spack supports the backend yet. But, I’ll talk to Cyrus and get it added.

1 Like
11

Hi Abhishek

Having in Spack would be great!

For now, what I have done is run build_Ascent and set build_catalyst:=true in https://github.com/Alpine-DAV/ascent/blob/develop/scripts/build_ascent/build_ascent.sh

This builds libcatalyst and creates libcatalyst-ascent.so. This works with the catalyst example in ascent but I still need to try with one of my example programs.

12

Perfect! Please do let me know if you have any problems running Ascent scripts through Catalyst.
I’ll be publishing a blog post about it sometime this week and will be including more documentation.