It looks like there may be a 64GB system memory limit for this card with current drivers. I can pin the tests to any CPU in the system, as long as I only use memory from CPU0 (64GB of 256GB). Pulling memory from each CPU so the system total is 64GB (16GB/ea) allows tests to run in memory attached to all CPUs. Confirmed adding memory to CPU0 (32GB; system total 80GB) makes tests against CPU3 memory fail.
Is there a better contact than firstname.lastname@example.org
for reporting these problems? I don't even get an automated response from that address.