# Mesh partition error **URL:** \ **Category:** General\ **Created:** [15 March 2024 14:39 UTC](https://pyfr.discourse.group/t/mesh-partition-error/1061 "2024-03-15T14:39:49Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![fei](https://avatars.discourse-cdn.com/v4/letter/f/59ef9b/32.png) [@fei](https://pyfr.discourse.group/u/fei)\ **Post date:** [15 March 2024 14:39 UTC](https://pyfr.discourse.group/t/mesh-partition-error/1061/1 "2024-03-15T14:39:49Z")
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? > ---
**Author:** ![WillT](https://avatars.discourse-cdn.com/v4/letter/w/bc79bd/32.png) [@WillT](https://pyfr.discourse.group/u/WillT)\ **Post date:** [15 March 2024 14:45 UTC](https://pyfr.discourse.group/t/mesh-partition-error/1061/3 "2024-03-15T14:45:31Z")
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` ---
**Author:** ![fei](https://avatars.discourse-cdn.com/v4/letter/f/59ef9b/32.png) [@fei](https://pyfr.discourse.group/u/fei)\ **Post date:** [15 March 2024 14:56 UTC](https://pyfr.discourse.group/t/mesh-partition-error/1061/4 "2024-03-15T14:56:38Z")
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](https://global.discourse-cdn.com/free1/uploads/pyfr/original/1X/b4fc33bc5075c277520eb9136978fae2c82054d0.png) ---
**Author:** ![fdw](https://avatars.discourse-cdn.com/v4/letter/f/a587f6/32.png) [@fdw](https://pyfr.discourse.group/u/fdw)\ **Post date:** [15 March 2024 15:16 UTC](https://pyfr.discourse.group/t/mesh-partition-error/1061/5 "2024-03-15T15:16:37Z")
As per the install guide: [https://pyfr.readthedocs.io/en/latest/installation.html#parallel](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](https://github.com/KarypisLab/METIS) ---
**Author:** ![fei](https://avatars.discourse-cdn.com/v4/letter/f/59ef9b/32.png) [@fei](https://pyfr.discourse.group/u/fei)\ **Post date:** [15 March 2024 15:17 UTC](https://pyfr.discourse.group/t/mesh-partition-error/1061/6 "2024-03-15T15:17:48Z")
On the other hand, could you tell me how to check by using `ldd` on the `libmetis.so`? With best regards ---
**Author:** ![fei](https://avatars.discourse-cdn.com/v4/letter/f/59ef9b/32.png) [@fei](https://pyfr.discourse.group/u/fei)\ **Post date:** [15 March 2024 15:20 UTC](https://pyfr.discourse.group/t/mesh-partition-error/1061/7 "2024-03-15T15:20:08Z")
Yes, I also tried the METIS-5.2.1, it comes out the same error. ---
**Author:** ![fdw](https://avatars.discourse-cdn.com/v4/letter/f/a587f6/32.png) [@fdw](https://pyfr.discourse.group/u/fdw)\ **Post date:** [15 March 2024 18:29 UTC](https://pyfr.discourse.group/t/mesh-partition-error/1061/8 "2024-03-15T18:29:37Z")
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. ---
**Author:** ![nnunn](https://avatars.discourse-cdn.com/v4/letter/n/c89c15/32.png) [@nnunn](https://pyfr.discourse.group/u/nnunn)\ **Post date:** [16 March 2024 14:10 UTC](https://pyfr.discourse.group/t/mesh-partition-error/1061/9 "2024-03-16T14:10:51Z")
Hi @fei, In the current git version of metis, at the end of file **metis/CMakeLists.txt** I find these 4 lines: ```auto # 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.