[Nek5000-users] logfile

Fri Mar 30 08:45:30 CDT 2018

Some random observations/comments from the logfile:

- Please use the latest offical replease (available as a tarball) instead of the master branch on GitHub
- Your're using a dimensional setup with (unreasonably) tight tolerances (as discussed)
- Is your flow incompressible?

-----Original message-----
> From:nek5000-users at lists.mcs.anl.gov <nek5000-users at lists.mcs.anl.gov>
> Sent: Friday 30th March 2018 15:33
> To: nek5000-users at lists.mcs.anl.gov
> Subject: Re: [Nek5000-users] logfile
> 
> Please find the attached link with permissions enabled
>  logfile <https://drive.google.com/file/d/1co21p9SNAq_Vs0YQgSp9Y_PeAWvOfem3/view?usp=drive_web>or try the link:
> 
> https://drive.google.com/file/d/1co21p9SNAq_Vs0YQgSp9Y_PeAWvOfem3/view?usp=sharing <https://drive.google.com/file/d/1co21p9SNAq_Vs0YQgSp9Y_PeAWvOfem3/view?usp=sharing>
> 
> On Fri, Mar 30, 2018 at 6:54 PM,  <nek5000-users at lists.mcs.anl.gov <mailto:nek5000-users at lists.mcs.anl.gov>> wrote:
> Can you please change the permissions such that everyone with the link can read it. Thanks!
> 
> -----Original message-----
> > From:nek5000-users at lists.mcs.anl.gov <mailto:From%3Anek5000-users at lists.mcs.anl.gov> <nek5000-users at lists.mcs.anl.gov <mailto:nek5000-users at lists.mcs.anl.gov>>
> > Sent: Friday 30th March 2018 13:42
> > To: nek5000-users at lists.mcs.anl.gov <mailto:nek5000-users at lists.mcs.anl.gov>
> > Subject: Re: [Nek5000-users] logfile
> >
> > Please find the link for the logfile
> >  logfile <https://drive.google.com/file/d/17OwfMBxok-h5Uy2QWtKGnQUYVBEiG5wC/view?usp=drive_web <https://drive.google.com/file/d/17OwfMBxok-h5Uy2QWtKGnQUYVBEiG5wC/view?usp=drive_web>>
> >
> > On Fri, Mar 30, 2018 at 4:59 PM,  <nek5000-users at lists.mcs.anl.gov <mailto:nek5000-users at lists.mcs.anl.gov> <mailto:nek5000-users at lists.mcs.anl.gov <mailto:nek5000-users at lists.mcs.anl.gov>>> wrote:
> > Can you please attach your logfile?
> >
> >
> > -----Original message-----
> > > From:nek5000-users at lists.mcs.anl.gov <mailto:From%3Anek5000-users at lists.mcs.anl.gov> <mailto:From%3Anek5000-users at lists.mcs.anl.gov <mailto:From%253Anek5000-users at lists.mcs.anl.gov>> <nek5000-users at lists.mcs.anl.gov <mailto:nek5000-users at lists.mcs.anl.gov> <mailto:nek5000-users at lists.mcs.anl.gov <mailto:nek5000-users at lists.mcs.anl.gov>>>
> > > Sent: Friday 30th March 2018 13:21
> > > To: nek5000-users at lists.mcs.anl.gov <mailto:nek5000-users at lists.mcs.anl.gov> <mailto:nek5000-users at lists.mcs.anl.gov <mailto:nek5000-users at lists.mcs.anl.gov>>
> > > Subject: Re: [Nek5000-users] logfile
> > >
> > > Thanks for the information.
> > >
> > > In my calculation, I am using a variable viscosity formulation. The
> > > viscosity depends on the temperature. As the run proceeds the initial
> > > residual for the TEMP gradually rises from 1E+03 until at around at
> > > the value 6E+07, the logfile shows an error for non-positive
> > > diffusivity. I have checked the temperature distribution which has no
> > > such value so as to make the diffusivity negative (or zero). Please
> > > indicate what I may be doing wrong.
> > >
> > > Thank you
> > > Swarandeep
> > >
> > > On Fri, Mar 30, 2018 at 3:30 PM,  <nek5000-users at lists.mcs.anl.gov <mailto:nek5000-users at lists.mcs.anl.gov> <mailto:nek5000-users at lists.mcs.anl.gov <mailto:nek5000-users at lists.mcs.anl.gov>>> wrote:
> > > >
> > > >>Step   1520, t= 7.6000000E-02, DT= 5.0000000E-05, C=  0.072 5.3831E+03 3.5403E+00
> > > > timestep, time, dt, Courant Number, elapsed solver time, solver time of last time iteration
> > > >
> > > >>1520  Hmholtz TEMP      12   3.8789E-11   4.5120E+07   1.0000E-10
> > > > timestep, solve type, iteration counter, final residual, initial residual, solver tolerance
> > > >
> > > > ...
> > > >
> > > >
> > > > -----Original message-----
> > > >> From:nek5000-users at lists.mcs.anl.gov <mailto:From%3Anek5000-users at lists.mcs.anl.gov> <mailto:From%3Anek5000-users at lists.mcs.anl.gov <mailto:From%253Anek5000-users at lists.mcs.anl.gov>> <nek5000-users at lists.mcs.anl.gov <mailto:nek5000-users at lists.mcs.anl.gov> <mailto:nek5000-users at lists.mcs.anl.gov <mailto:nek5000-users at lists.mcs.anl.gov>>>
> > > >> Sent: Friday 30th March 2018 11:52
> > > >> To: nek5000-users at lists.mcs.anl.gov <mailto:nek5000-users at lists.mcs.anl.gov> <mailto:nek5000-users at lists.mcs.anl.gov <mailto:nek5000-users at lists.mcs.anl.gov>>
> > > >> Subject: Re: [Nek5000-users] logfile
> > > >>
> > > >> The following is my logfile entry (sample lines). The first line is
> > > >> understandable. What do the values in the third and following lines
> > > >> denote?
> > > >>
> > > >>
> > > >> ------------------------------------------------------
> > > >> Step   1520, t= 7.6000000E-02, DT= 5.0000000E-05, C=  0.072 5.3831E+03
> > > >> 3.5403E+00
> > > >>              Solving for Hmholtz scalars
> > > >>        1520  Hmholtz TEMP      12   3.8789E-11   4.5120E+07   1.0000E-10
> > > >>        1520  Scalars done  7.6000E-02  8.3823E-02
> > > >>              Solving for fluid
> > > >>        1520  Helmh3 fluid      17   3.6594E-11   4.7524E-01   1.0000E-10
> > > >>        1520  U-PRES gmres     120   1.3494E-08   4.5675E-06
> > > >> 1.0000E-10   7.8799E-01   3.0171E+00
> > > >>        1520  Fluid done  7.6000E-02  3.3650E+00
> > > >> --------------------------------------------------------
> > > >>
> > > >> On Fri, Mar 30, 2018 at 3:05 PM,  <nek5000-users at lists.mcs.anl.gov <mailto:nek5000-users at lists.mcs.anl.gov> <mailto:nek5000-users at lists.mcs.anl.gov <mailto:nek5000-users at lists.mcs.anl.gov>>> wrote:
> > > >> > I am not sure what you are talking about?
> > > >> >
> > > >> > -----Original message-----
> > > >> >> From:nek5000-users at lists.mcs.anl.gov <mailto:From%3Anek5000-users at lists.mcs.anl.gov> <mailto:From%3Anek5000-users at lists.mcs.anl.gov <mailto:From%253Anek5000-users at lists.mcs.anl.gov>> <nek5000-users at lists.mcs.anl.gov <mailto:nek5000-users at lists.mcs.anl.gov> <mailto:nek5000-users at lists.mcs.anl.gov <mailto:nek5000-users at lists.mcs.anl.gov>>>
> > > >> >> Sent: Friday 30th March 2018 10:30
> > > >> >> To: nek5000-users at lists.mcs.anl.gov <mailto:nek5000-users at lists.mcs.anl.gov> <mailto:nek5000-users at lists.mcs.anl.gov <mailto:nek5000-users at lists.mcs.anl.gov>>
> > > >> >> Subject: [Nek5000-users] logfile
> > > >> >>
> > > >> >> Hi Neks,
> > > >> >>
> > > >> >>      What are the entries in the logfile that is output from running
> > > >> >> the code.  Please let me know where the entries are determined in the
> > > >> >> code.
> > > >> >>
> > > >> >> Thanks
> > > >> >> Swarandeep
> > > >> >> _______________________________________________
> > > >> >> Nek5000-users mailing list
> > > >> >> Nek5000-users at lists.mcs.anl.gov <mailto:Nek5000-users at lists.mcs.anl.gov> <mailto:Nek5000-users at lists.mcs.anl.gov <mailto:Nek5000-users at lists.mcs.anl.gov>>
> > > >> >> https://lists.mcs.anl.gov/mailman/listinfo/nek5000-users <https://lists.mcs.anl.gov/mailman/listinfo/nek5000-users> <https://lists.mcs.anl.gov/mailman/listinfo/nek5000-users <https://lists.mcs.anl.gov/mailman/listinfo/nek5000-users>>
> > > >> >>
> > > >> > _______________________________________________
> > > >> > Nek5000-users mailing list
> > > >> > Nek5000-users at lists.mcs.anl.gov <mailto:Nek5000-users at lists.mcs.anl.gov> <mailto:Nek5000-users at lists.mcs.anl.gov <mailto:Nek5000-users at lists.mcs.anl.gov>>
> > > >> > https://lists.mcs.anl.gov/mailman/listinfo/nek5000-users <https://lists.mcs.anl.gov/mailman/listinfo/nek5000-users> <https://lists.mcs.anl.gov/mailman/listinfo/nek5000-users <https://lists.mcs.anl.gov/mailman/listinfo/nek5000-users>>
> > > >> _______________________________________________
> > > >> Nek5000-users mailing list
> > > >> Nek5000-users at lists.mcs.anl.gov <mailto:Nek5000-users at lists.mcs.anl.gov> <mailto:Nek5000-users at lists.mcs.anl.gov <mailto:Nek5000-users at lists.mcs.anl.gov>>
> > > >> https://lists.mcs.anl.gov/mailman/listinfo/nek5000-users <https://lists.mcs.anl.gov/mailman/listinfo/nek5000-users> <https://lists.mcs.anl.gov/mailman/listinfo/nek5000-users <https://lists.mcs.anl.gov/mailman/listinfo/nek5000-users>>
> > > >>
> > > > _______________________________________________
> > > > Nek5000-users mailing list
> > > > Nek5000-users at lists.mcs.anl.gov <mailto:Nek5000-users at lists.mcs.anl.gov> <mailto:Nek5000-users at lists.mcs.anl.gov <mailto:Nek5000-users at lists.mcs.anl.gov>>
> > > > https://lists.mcs.anl.gov/mailman/listinfo/nek5000-users <https://lists.mcs.anl.gov/mailman/listinfo/nek5000-users> <https://lists.mcs.anl.gov/mailman/listinfo/nek5000-users <https://lists.mcs.anl.gov/mailman/listinfo/nek5000-users>>
> > > _______________________________________________
> > > Nek5000-users mailing list
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> > >
> > _______________________________________________
> > Nek5000-users mailing list
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> >
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