[petsc-dev] Using multiple mallocs with PETSc

Barry Smith bsmith at mcs.anl.gov
Fri Mar 10 11:09:09 CST 2017


> On Mar 10, 2017, at 9:58 AM, Lisandro Dalcin <dalcinl at gmail.com> wrote:
> 
> 
> On 10 March 2017 at 03:19, Barry Smith <bsmith at mcs.anl.gov> wrote:
>     PetscMallocRegister(malloc,realloc,free,&basicmalloc);
>     PetscMallocRegister(PetscMallocDebug,PetscReallocDebug,PetscFreeDebug,&debugmalloc);
>     PetscMallocRegister(PetscMallocHBW,PetscReallocHBW,PetscFreeHBW,&hbwmalloc);
> 
> I'm wondering whether we should also handle calloc() here, and implement PetscCalloc properly. As I understand it, calloc != malloc+memset, and the differences might be important in multicore+multithreading scenarios and the first-touch policy.

   Could be done.


> 
> 
> -- 
> Lisandro Dalcin
> ============
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