Mesh partition error

General
1

Hello, I began to run the pyfr 2.0, versions up to 2.0 run normally. When I did the mesh partition by pyfr partition 30 a.pyfrm ., it comes error.

Traceback (most recent call last):
File “/home/pyfr-2.0/bin/pyfr”, line 8, in
sys.exit(main())
File “/home/pyfr-2.0/lib/python3.10/site-packages/pyfr/main.py”, line 124, in main
args.process(args)
File “/home/pyfr-2.0/lib/python3.10/site-packages/pyfr/main.py”, line 190, in process_partition
mesh, rnum, part_soln_fn = part.partition(mesh, args.progress)
File “/home/pyfr-2.0/lib/python3.10/site-packages/pyfr/partitioners/base.py”, line 393, in partition
vparts = self._partition_graph(graph, self.partwts).tolist()
File “/home/pyfr-2.0/lib/python3.10/site-packages/pyfr/partitioners/metis.py”, line 166, in _partition_graph
part_graph_fn(
File “/home/pyfr-2.0/lib/python3.10/site-packages/pyfr/ctypesutil.py”, line 37, in _errcheck
raise self._statuses[status]
pyfr.partitioners.metis.METISErrorInput

And I didn’t install the metis, so I tried to install metis. I used this patch2 packeg, but the error come out , which is attached below. Could someone help me solve it?

3

I’m pretty sure that this is due to metis not being linked to gklib, you should be able to check by using ldd on the libmetis.so

4

I am not sure if you had seen the error, when I use commond cmake -DCMAKE_INSTALL_PREFIX=/path/to/install in the build file, the error comes out.

f31bed45607db4544e8c6d5b8a33075e_720
f31bed45607db4544e8c6d5b8a33075e_720997×113 77.5 KB

5

As per the install guide:

https://pyfr.readthedocs.io/en/latest/installation.html#parallel

PyFR v2 now requires 5.2 of METIS.

Regards, Freddie.

PS This is not a METIS support forum. If you require support with compiling METIS please open an issue here: GitHub - KarypisLab/METIS: METIS - Serial Graph Partitioning and Fill-reducing Matrix Ordering

1 Like
6

On the other hand, could you tell me how to check by using ldd on the libmetis.so?

With best regards

7

Yes, I also tried the METIS-5.2.1, it comes out the same error.

8

It is almost certain that you have the incorrect version of METIS. This exact error is known to be caused through use of 5.1.

Regards, Freddie.

9

Hi @fei,
In the current git version of metis, at the end of file metis/CMakeLists.txt I find these 4 lines:

# Recursively look for CMakeLists.txt in subdirs.
add_subdirectory("build/xinclude")
add_subdirectory("libmetis")
add_subdirectory("programs")

If the subdirectory “build/xinclude” does not exist, hide that line with # character
PS: I use windows and do not have that subdirectory.