Jorge,
pml/ucx used to be selected when no fast interconnect were detected
(since ucx provides driver for both TCP and shared memory).
These providers are now disabled by default, so unless your machine
has a supported fast interconnect (such as Infiniband),
pml/ucx cannot be used out of the box
Hi,
We routinely build OpenMPI on x86_64-pc-linux-gnu machines from
the sources using gcc and usually everything works fine.
In one case we recently installed Fedora 34 from scratch on an
ASUS G53SX notebook (Intel Core i7-2630QM CPU 2.00GHz ×4 cores,
without any IB device). Next we build
