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- cpuset=0,2,4,6 -n 5 max threads for python3 is 15
- cpuset=0,2,4,6,8,10,12,14 -n 5 max threads for python3 is 23
- no cpuset defined (24 cores) -n 5 max threads for python3 is 39
QUESTION: are the system fft libraries (/usr/lib64/libfft*) used by casa-6 or casa-5?
ANSWER: No. I used ls --time=atime --sort=time -r /usr/lib64/libfft* to see if the access time changes after running CASA. They did not. But when running my own installation of CASA6, the fft libraries in that installation did update their access time.