allocate memory for fluent
 

i could run my geometry with 1,000,000 cells in fluent; But, for 1.5 millions it gives me this error
" Error: 1000000: Failed to allocate 35.18MB memory (..\..\src\amg.c:2779)

Error Object: ()"

my PC has 8 cpu and 4GB ram memory
what should i do?