Hi, everyone. I am using CESM2.1.5 to test hybrid compilation. First, there were no problems running in pure MPI. However, during multi-threaded testing, I found that the program ran successfully within a single node, but when running on multiple nodes, I encountered the error forrtl: severe (174): SIGSEGV, segmentation fault occurred, and the errors were concentrated in tp_core.F90, sw_core.F90, and cd_core.F90. Therefore, I disabled the threads of the ATM component, but the same error was still reported. I also tried changing ulimit -s and omp_stacksize, but neither worked. I hope you can give me some effective suggestions. Thank you. The following is my run log and env_mach_env_mach_pes.xml: