[Pw_forum] insufficient virtual memory! What to do?

[xzheng2 at ncsu.edu]

Dear all,

When I run pw.x, the following mistake happens. Could you tell me what to
do, please? Thank you very much!

Sincerely,
Xiaohong

[zxh at localhost pwscf]$ run.sh
  running the geometry relaxation for Au16Si...\c
forrtl: severe (41): insufficient virtual memory
Image              PC        Routine            Line        Source
pw.x               0835666C  Unknown               Unknown  Unknown
pw.x               08354B6D  Unknown               Unknown  Unknown
pw.x               08321F86  Unknown               Unknown  Unknown
pw.x               082E2464  Unknown               Unknown  Unknown
pw.x               08307D99  Unknown               Unknown  Unknown
pw.x               08307CD3  Unknown               Unknown  Unknown
pw.x               080D3705  Unknown               Unknown  Unknown
pw.x               0815C08D  Unknown               Unknown  Unknown
pw.x               0815BD81  Unknown               Unknown  Unknown
 done
  cleaning /data/work/pwscf/tmp...\c
 done