3.8.10 Sun: SunFire

CO5BOLD has been used on the SunFire machines``fire1'', ``fire2'', and ``fire3'' in Uppsala with compiler version ``Sun WorkShop 6 update 2 Fortran 95 6.2 2001/05/15'' an later. An older version was not able to compile CO5BOLD properly. Information about Fortran and the Sun compiler can be found on the Sun Forte page under ``documentation''. Important switches are:

• -openmp: Enable OpenMP.

• -fast -xvector=yes/no: General optimization. On the Sun the -fast option switches on more or less all optimization features of the compiler. That works reasonable well. However, during the compilation of gasinter_routines.f90 (and only there) the switch -xvector=no is requiered!

• -inline=...: Optimization: Routines that should be inlined:
  file rhd_hyd_module.F90: rhd_hyd_avg, rhd_hyd_upwind, rhd_hyd_pred0, rhd_hyd_predm, rhd_hyd_predp, rhd_hyd_alpha, rhd_hyd_constanteq, rhd_hyd_minmodeq, rhd_hyd_minmod, rhd_hyd_vanleereq, rhd_hyd_vanleer, rhd_hyd_superbeeeq, rhd_hyd_superbee, rhd_hyd_ppeq, rhd_hyd_pp, rhd_hyd_hdflux,
  file rhd_lhdrad_module.F90: rhd_rad3d_raylhd, rhd_rad3d_solve, rhd_rad3d_solveeq,
  file rhd_shortrad_module.F90: rhd_shortrad_operator, rhd_shortrad_dtauop.

• -Drhd_shortrad_formal_l01=1: Optimization: split loop for exp(-dtau) computation into two loops. See Sect. 3.7.

• -Drhd_shortrad_dir1_l01=1: Optimization: Transpose arrays and use routine rhd_shortrad_dir3 for rays in x1 direction. See Sect. 3.7.

• -Drhd_hyd_entropyfix_p01=1: Optimization: version with masks (weights). See Sect. 3.7.