Excellent - thanks! Now if only the OpenMP people would be so reasonable...sigh.
> On Mar 18, 2020, at 10:26 AM, Zhang, William <wilzh...@amazon.com> wrote: > > Hello, > > We're getting the topology info using the opal_hwloc_topology object, we > won't be doing our own discovery. > > William > > On 3/17/20, 11:54 PM, "devel on behalf of Ralph Castain via devel" > <devel-boun...@lists.open-mpi.org on behalf of devel@lists.open-mpi.org> > wrote: > > CAUTION: This email originated from outside of the organization. Do not > click links or open attachments unless you can confirm the sender and know > the content is safe. > > > > Hey folks > > I saw the referenced "new feature" on the v5 feature spreadsheet and > wanted to ask a quick question. Is the OFI MTL going to be doing its own > hwloc topology discovery for this feature? Or is it going to access the > topology info via PMIx and the OPAL hwloc abstraction? > > I ask because we know that having every proc do its own topology discovery > is a major problem on large-core systems (e.g., KNL or Power9). If OFI is > going to do an hwloc discovery operation, then we need to ensure this doesn't > happen unless specifically requested by a user willing to pay that price (and > it was significant). > > Can someone from Amazon (as the item is assigned to them) please clarify? > Ralph > > > >
