I have a question on how to run two or more Mathematica jobs on one laptop. For example, I use a local kernel to run a job. Then I open another job and choose Kernel configuration option and choose alternative local kernel to run another job. Then I found the first job is stopped. The number labels in front of the current bracket disappears. This makes me very upset. Because the computation is very expensive, it costs me three days. But then I switch the kernel to the original local, the number label comes back, but I am wondering this operation actually has killed the computation, which cannot continue as before, though the title still shows running, but it is a lie. I keep waiting for two hours without any output results. Does anyone have experience on it?