[petsc-users] Question about PETSC

[Barry Smith]

> On Mar 16, 2017, at 4:56 AM, Валентин Егоров <egorow.walentin at gmail.com> wrote:
> 
> Thank you for answering, I will try. 
> Sincerely, 
>   Valentin
> 
> Matt is correct. The best way to get into PETSc is by studying the example codes provided in the source tree.
> 
> As a precursor to studying fortran examples, you should take a look at this page and decided which PETSc-fortran approach you wish to use:
> 
> http://www.mcs.anl.gov/petsc/petsc-current/docs/manualpages/Sys/UsingFortran.html

   Since you are just starting with PETSc I highly recommend you DO NOT read the above since we have vastly simplified the usage of PETSc from Fortran. You should read 

http://www.mcs.anl.gov/petsc/petsc-dev/docs/manualpages/Sys/UsingFortran.html

and  download PETSc via 

git clone -b master https://bitbucket.org/petsc/petsc petsc
  
and look at the documentation at

 http://www.mcs.anl.gov/petsc/petsc-master/docs/index.html


   
> 
> Thanks,
>   Dave
> 
> 
>   Thanks,
> 
>      Matt
> 
> On Thu, Mar 16, 2017 at 12:37 AM, Валентин Егоров <egorow.walentin at gmail.com> wrote:
> Hello! 
> My name is Valentin Egorov. I am from Russia. And I have a question for you about PETSC. I would like to make a programm on Fortran with PETSC, but I can't. I have a matrix 400*400. I have also vector B with 400 elements. I need to solve linear equations. Could you help me to do it. I can't understand how use PETSC in Fortran? In fortran programm? And where to put matrix elements?
> 
> Sincerely, Valentin Egorov!
> 
> 
> 
> -- 
> What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead.
> -- Norbert Wiener
>