[petsc-users] Questions about SAWs

[Barry Smith]

> On Sep 2, 2016, at 7:36 PM, Santiago Ospina De Los Rios <sospinar at unal.edu.co> wrote:
> 
> Hello there!
> 
> I'm learning how to use SAWs; three questions:
> 
> 1. Why do I have this output coming out constantly in my terminal while I'm looking the web page? (only when I use -saws_options)
> 
> /MyLibs/PETSc/src/sys/objects/aoptions.c:91: __FUNCT__="PetscOptionCreate_Private" does not agree with __func__="PetscOptionItemCreate_Private"--

   This is our mistake, thanks for letting us know. I have fixed it in the maint and master branches.

> 
> 2. Do I have to do something special to use -saws_options when I'm running in parallel? At the moment hasn't been able to get it running. (only when I use -saws_options)

   We haven't tested it in parallel. It is tricky because the SAWs web server runs only with MPI process zero. You may need to do some coding to get it working well in parallel.

> 
> 3. Where can I find the complete list of options of SAWs? It doesn't appear when one uses -help and I didn't find any user manual or reference relating SAWs with PETSc

   You can run the git command 

git grep PetscStackCallSAWs

which will show all the source files that use SAWS and then find the options from there. I think the main two are 
-snes_monitor saws  and -ksp_monitor_saws

  Barry

> 
> Thank you,
> Santiago
> -- 
> Att:
> 
> Santiago Ospina De Los Ríos
> National University of Colombia