Re: Message about timing in *log file.

From: Jim Phillips (
Date: Mon Feb 02 2015 - 00:15:09 CST

It's best to actually run on the actual CPU counts you are considering in
order to measure parallel speedup. Also, run long enough that you see
several "Benchmark time:" lines, which are printed after initial load
balancing so should be more representative of a long run.


On Sun, 1 Feb 2015, Dawid das wrote:

> Dear NAMD experts,
> I have question with quite obvious answer but I want to make sure.
> How should I understand this kind of message in *log file:
> Info: Initial time: 1 CPUs 0.042815 s/step 0.247772 days/ns 62.082 MB memory
> Does it mean that when I use 1CPU then 0.25 days will take for 1 ns of
> simulation?
> So I can easily calculate how much time my simulation will take on e.g. 4
> CPUs and for 5 ns?
> Best wishes,
> Dawid Grabarek

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