is this as expected using the ccx_static compilation from http://www.dhondt.de/calculix_2.21_4win.zip ?
model: freq_test.inp from verification library
*ERROR in arpack: the PARDISO library is not linked
Are you sure you didn’t use ccx_dynamic ?
Yes, I’m using the ccx_static. Running with spooles or Pastix is ok.
I’m on windows 11 o/s.
Just read the read_me installation file from Rafal, result is as expected.