"For example, the new Linux 4.14 enables supercomputers to use Heterogeneous Memory Management (HMM). This enables GPUs and CPUs to access a process's shared ad

"For example, the new Linux 4.14 enables supercomputers to use Heterogeneous Memory Management (HMM). This enables GPUs and CPUs to access a process's shared address space. Exactly 102 of the Top500 are using now using GPU accelerator/co-processor technology. All of these will perform better, thanks to HMM": it sounds like some of the 500 supercomputers use Linux 4.14. I guess none of them uses Linux 4.14 yet.