Bug Fix For Program ndown (posted 5/4/12)
Problem: With the use of default hypsometric_opt = 2 option (introduced in 3.4), program ndown broke down. Because of this change in the default option, do not use 3.4 ndown for model data created prior to 3.4. However one may explicitly set hypsometric_opt = 1 in namelist section &domains to allow 3.4 ndown to work with old data.
Solution: Download the corrected version of module_initialize_real.F-3.4 to WRFV3/dyn_em/ directory and recompile.
Incorrect Sounding in Fire Example (posted 5/4/12)
Problem: The input_sounding file provided in test/em_fire/two_fires directory in 3.4 is incorrect, which will cause running ideal.exe to fail.
Solution: Please downlownd the correct <
file here.
Compile V3.4 with ifort (posted 4/6/12)
Problem: With the use of ifort 10.1, the model may seg fault with RRTMG radiation options with default compiler option.
Solution: Reduce the optimization level from -O3 to -O2 appears to resolve the problem.
OpenMP And MPI For Some Physics in V3.4 (posted 4/6/12)
Problem: Certain physics options do not work correctly with OpenMP or MPI compile. These are
- mp_physics = 9 (Milbrandt-Yau scheme) (OpenMP)
- sf_urban_physics = 2 (BEM) (OpenMP)
- ishallow = 1
(OpenMP and MPI)
- sf_surface_physics = 8 (SSiB LSM, OpenMP)
- bl_pbl_physics = 10 (TEMF PBL, some systems)
- bl_pbl_physics = 5,6, together with sf_sfclay_physics = 5 (MYNN, and MYNN sfclay, serial vs MPI on some systems)
- mp_physics = 7 (Goddard GCE microphysics, serial vs MPI some systems)
There is no known problem with these physics options if OpenMP or MPI is not used.
Solution: Do not attempt to use the above listed options with OpenMP or MPI compile.
