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 Marc? Nogu? 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 Marc?-Nogu? > > > Dept. Resist?ncia de Materials i Estructures a l'Enginyeria > > > Universitat Polit?cnica de Catalunya (UPC) > > > > > > Edifici T45 - despatx 137 > > > ETSEIAT (Terrassa) > > > > > > phone: +34 937 398 728 > > > mail: jordi.marce at upc.edu > > > > > > > > > > > > > >
