[gmx-users] output logfile

[Mark Abraham]

On 4/12/2011 6:50 AM, Sanku M wrote:
> Hi,
>  It might be a very minor issue but I find in versions of gromacs 
> 4.5.4, the output log file ( in verbose mode) writes the progress of 
> the simulation in a single line ( unlike in previous gromacs 4.0.7 
> version) where it used to write the progress in a new lines. As a 
> result, in gromacs4.5.4, opening a logfile or issuing unix 'tail' 
> command to see last few lines becomes a bit time-consuming as the 
> progress is written in a single line.
>
> An example is shown below for gromacs 4.5.4:
>   ^Mstep 2100, will finish Sat Dec  3 19:55:12 2011vol 0.79  imb F  0% 
> ^Mstep 2200, will finish Sat Dec  3 19:54:59 2011vol 0.80  imb F  1% 
> ^Mstep 2300, will finish Sat Dec  3 19:54:49 2011vol 0.79  imb F  1% 
> ^Mstep 2400, will finish Sat Dec  3 19:54:40 2011vol 0.80  imb F  0% 
> ^Mstep 2500, will finish Sat Dec  3 19:54:31 2011vol 0.80  imb F  1% 
> ^Mstep 2600, will finish Sat Dec  3 19:54:22 2011vol 0.80  imb F  1% 
> ^Mstep 2700, will finish Sat Dec  3
>
> I wonder whether there is an fix for this minor issue.

The behaviour where mdrun appears to write over the previous "will 
finish" line has been in place for many years. In fact, the "old lines" 
are always still there. I think some difference in your workflow must be 
the explanation for your observation.

Mark
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