[Pw_forum] Estimation of cpu time required without actually doing the calculation

Prasenjit Ghosh prasenjit.jnc at gmail.com
Tue Jun 21 17:09:03 CEST 2011

Dear all,

Is there some way to estimate the time required for doing an scf iteration
using pw.x, without actually performing the calculation ?

I tried to make an estimate following the guideline given in the manual and
compared it with the actual CPU time required......the two results are not
matching......I am getting an abnormally high estimate of the CPU time
required........most probably I am doing something wrong.

By the way, in what units will I get the time by using the procedure
mentioned in the manual?

With regards,


Assistant Professor,
First floor, Central Tower, Sai Trinity Building
Garware Circle, Sutarwadi, Pashan
Pune, Maharashtra 411021, India

Phone: +91 (20) 2590 8203
Fax: +91 (20) 2589 9790
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