HI Wei, Not sure if anyone has gotten back to you. I was not aware we had a converter from nek500 field files but can see one has been added. Anyway if you post a input file we can see if it also fails for us locally. Best, Spencer. From: nektar-users-bounces@imperial.ac.uk <nektar-users-bounces@imperial.ac.uk> on behalf of Wei He <weiyh.he@gmail.com> Date: Wednesday, 23 October 2024 at 03:47 To: nektar-users <nektar-users@imperial.ac.uk> Subject: [Nektar-users] Failed to read nek5000 data This email from weiyh.he@gmail.com originates from outside Imperial. Do not click on links and attachments unless you recognise the sender. If you trust the sender, add them to your safe senders list<https://spam.ic.ac.uk/SpamConsole/Senders.aspx> to disable email stamping for this address. Dear Nektar++ developers and users, I am planing to use 3D flow datas generated by nek5000. When I run the command on a centos machine, the process fails with errors, as shown below: FieldConvert roCyl_half0.f00100 cyl.fld -------------------------------------------------------------------------- WARNING: There was an error initializing an OpenFabrics device. Local host: master Local device: mlx5_0 -------------------------------------------------------------------------- Field contains unknown variable: X [master:42932] *** Process received signal *** [master:42932] Signal: Aborted (6) [master:42932] Signal code: (-6) [master:42932] [ 0] /lib64/libpthread.so.0(+0xf630)[0x7f85cfcf4630] [master:42932] [ 1] /lib64/libc.so.6(gsignal+0x37)[0x7f85cf94d387] [master:42932] [ 2] /lib64/libc.so.6(abort+0x148)[0x7f85cf94ea78] [master:42932] [ 3] /share/home/user1/nektar++/build/dist/lib64/libFieldUtils.so.5.6.0(_ZN6Nektar10FieldUtils12InputNek50009v_ProcessERN5boost15program_options13variables_mapE+0xe70)[0x7f85d3db2590] [master:42932] [ 4] FieldConvert[0x41e615] [master:42932] [ 5] FieldConvert[0x41b47e] [master:42932] [ 6] /lib64/libc.so.6(__libc_start_main+0xf5)[0x7f85cf939555] [master:42932] [ 7] FieldConvert[0x41dad2] [master:42932] *** End of error message *** Aborted (core dumped) While I also tried a 2D case on my laptop, it neither doesn't pass the procession. I wonder if I did the correct things, and thank you in advance! regards, Wei FieldConvert cylinder2D0.f00100 cyl.fld Field contains unknown variable: X [Harqin:55513] *** Process received signal *** [Harqin:55513] Signal: Abort trap: 6 (6) [Harqin:55513] Signal code: (0) [Harqin:55513] [ 0] 0 libsystem_platform.dylib 0x00000001878fe584 _sigtramp + 56 [Harqin:55513] [ 1] 0 libsystem_pthread.dylib 0x00000001878cdc20 pthread_kill + 288 [Harqin:55513] [ 2] 0 libsystem_c.dylib 0x00000001877daa30 abort + 180 [Harqin:55513] [ 3] 0 libFieldUtils.5.5.0.dylib 0x0000000100a784dc _ZN6Nektar10FieldUtils12InputNek50009v_ProcessERN5boost15program_options13variables_mapE + 5284 [Harqin:55513] [ 4] 0 FieldConvert 0x00000001002f7b5c _Z9RunModuleNSt3__110shared_ptrIN6Nektar10FieldUtils6ModuleEEERN5boost15program_options13variables_mapEb + 820 [Harqin:55513] [ 5] 0 FieldConvert 0x00000001002f24e8 main + 18272 [Harqin:55513] [ 6] 0 dyld 0x0000000187543154 s tart + 2476 [Harqin:55513] *** End of error message *** zsh: abort FieldConvert cylinder2D0.f00100 cyl.fld