big_malloc.c running, 10 malloc and free 1GB 
about to malloc and free 1GB the 1 time 
about to malloc and free 1GB the 2 time 
about to malloc and free 1GB the 3 time 
about to malloc and free 1GB the 4 time 
about to malloc and free 1GB the 5 time 
about to malloc and free 1GB the 6 time 
about to malloc and free 1GB the 7 time 
about to malloc and free 1GB the 8 time 
about to malloc and free 1GB the 9 time 
about to malloc and free 1GB the 10 time 
about to malloc and free 2000000000 
about to malloc and free 3000000000 
about to malloc and free 4000000000 
about to malloc and free 5000000000 
about to malloc and free 6000000000 
about to malloc and free 7000000000 
try calloc on 800000000 items of size 8 6.4GB 
successful end big_malloc