[Issue] 30B MoE with FSU (slimMoE, slimCachedMoE) fails with `mmap-read=true` option

[EunjuYang]

In the current nntrainer version, it seems the 30B MoE with FSU (slimMoE, slimCachedMoE) have memory issue when mmap-read option is set true. While we are fixing the bug, it is recommended to run the models with mmap-read=false.