memory bleeding

[Satish Balay]

If you don't get any output with -trdump - it could mean that all
objects are getting properly destroyed. But the swap usage is a bit
unusual.

You could try the option -trmalloc_log to see how memory is allocate
on the PETSc side. And also -log_summary to see the summary of memory
usage.

Also - is it possible you have malloc() calls in your side of the code
- that could be leaking memory?

you could also comment out all MatSetOption() calls and see if it
makes a difference.

BTW: 2.2.0 is a very old version. You might want to upgrade to the
latest 2.3.1

Satish

On Mon, 8 May 2006, Jordi Marcé Nogué wrote:

> Thanks Barry, 
>  
> I'm using petsc 2.2.0. When I run my program ( " ./myprogram -trdump " or with 
> -trmalloc, -trinfo...) I don't obtain anything... in the screen the code doesn't
> print 
> anything. 
>  
> If I use (for example) "./myprogram -start_on_debugger", in my screen apers gdb
> 
> and runs good... and with another options like -log_trace petsc writes messages
> in 
> my screen. Would I have to activate something in my internal petsc code? 
>  
> best regards, 
> jordi 
>  
>  
>  
>  
>  
>  
> Missatge citat per Barry Smith <bsmith at mcs.anl.gov>: 
>  
> >  
> >     See 
> > 
> http://www-unix.mcs.anl.gov/petsc/petsc-as/documentation/troubleshooting.html 
> > number 12 
> >  
> >     You can run for say a few iterations with the options 
> > -malloc_debug -malloc_dump (in  PETSc 2.3.1. in early releases it had 
> > different names). At PetscFinalize() PETSc will print all the memory 
> > it has allocated that has not been freed and where it was allocated. 
> > This can help determine what objects are not being freed. 
> >  
> >     Barry 
> >  
> > > 
> > > Hi, 
> > > 
> > > I use PETSc, and after 5000 (more or less) iteations in which i solve a 
> > little 
> > > matrix 
> > > (30x30) my swap is totally used!!! I'm sure that when I create my matrices 
> > I 
> > > destroy 
> > > them. Could you help me about it? What happens? What thing I do bad? 
> > > 
> > > Mat K 
> > > MatCreateSeqAIJ(PETSC_COMM_SELF, dim, dim, 9 , PETSC_NULL, &K); 
> > > MatSetFromOptions(K); 
> > > MatSetOption(K, MAT_SYMMETRIC); 
> > > MatSetOption(K, MAT_ROW_ORIENTED); 
> > > MatSetOption(K, MAT_IGNORE_ZERO_ENTRIES); 
> > > MatSetOption(K, MAT_NEW_NONZERO_ALLOCATION_ERR); 
> > > 
> > > ( I use KSP solve, created and destroyed) 
> > > 
> > > MatDestroy(K); 
> > > 
> > > 
> > > Thanks, 
> > > jordi 
> > > ----------- 
> > > Jordi Marcé-Nogué 
> > > Dept. Resistència de Materials i Estructures a l'Enginyeria 
> > > Universitat Politècnica de Catalunya (UPC) 
> > > 
> > > Edifici T45 - despatx 137 
> > > ETSEIAT (Terrassa) 
> > > 
> > > phone: +34 937 398 728 
> > > mail: jordi.marce at upc.edu 
> > > 
> > > 
> > > 
>  
>  
>   
> 
>