[petsc-dev] Using multiple mallocs with PETSc

Jed Brown jed at jedbrown.org
Tue Mar 14 15:23:47 CDT 2017

Barry Smith <bsmith at mcs.anl.gov> writes:

>> On Mar 13, 2017, at 1:27 PM, Jed Brown <jed at jedbrown.org> wrote:
>> Satish Balay <balay at mcs.anl.gov> writes:
>>> stash the metadata for each allocation (and pointers for corresponding
>>> free) in a hash table for all mallocs that we need to track? [this
>>> avoids the wasted 'space' in each alloc.]
>> Sure, but this is just duplicating an implementation of malloc.
>    No it isn't. It is a very thin wrapper around multiple current mallocs.

Meh, the proposal has more storage overhead than malloc().
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