[gpu4] N card fake input
[gpu4] Small bug
[gpu4] Performance boost
[gpu4] Terse expression
[gpu4] With db
[gpu4] Finetune?
[gpu4] Performance test without update
[gpu4] Enable one_gpu_id
[gpu4] Stupid mistake.. Now IO is overlapping
[gpu4] Rename`
[gpu4] Simplify model code
[gpu4] Compatability?
[master] Merge branch 'gpu4'