miner does not support affinity mask of more than 64 cores?
Correct. The CLI is limited to 64 bit integers. The 64 bit mask is repeated for CPUs 64 to 127, 128 to 191, etc.
On windows the mask used is the size of a CPU group (CPU groups not supported with prebuilt binaries) and is
repeated accordingly for each group if the group size is less than 64.
I can't think of a practical case where affinity would not be repeating pattern and require all unique bits.
If you have a CPU with more than 64 threads I would be interested in your experience.
dual cpu with 64 cores. now I disable auto-affinity and use taskset in Ubuntu, but I haven’t figured out how to do it in Hive OS yet