[Wien] lapw0 error fora heavy compound

[samaneh javan]

Dear users,
  I am calculating a heavy compound which has more than 50 atoms, But I have
this error at the frdt itteration on running lapw0;
0: ALLOCATE: 1289945088 bytes requested; not enough memory

How can I solve this problem?
Thanks in advance for your help
Sama javan
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