[Pw_forum] Is it necessary to clear outdir / wfcdir before calculation?

[WF]

Thanks for your advices, I will remove the output if it is not necessary. 

I am sorry that I don't notice that the title contains a newline mark of
which only the first line is copied in my message sent, so it doesn't work
properly, i.e. no previous message or affiliation.

Best regards,

Wu F

-----------------------------------------------------------
F, Wu
College of Chemistry and Molecular Engineering
Peking University
----------------------------------------------------------