I am very glad and honored to receive your reply.This is the first time I've posted a question. I am sorry that some of the content is not very clear.
I use the compset F2000climo(CAM-only F compset) to run a case.I changed nothing and ran the same case with different numbers of nodes(each node has 28 cores).Their results vary widely. For example, temperatures can vary by five degrees or more in winter.The version is CESM2.1.3.
I don't know what to do about it.Looking forward to your reply.THANK U,sir.