Thanks, Jed, This worked!
Fande On Wed, Jan 19, 2022 at 11:03 PM Jed Brown <j...@jedbrown.org> wrote: > Fande Kong <fdkong...@gmail.com> writes: > > > On Wed, Jan 19, 2022 at 11:39 AM Jacob Faibussowitsch < > jacob....@gmail.com> > > wrote: > > > >> Are you running on login nodes or compute nodes (I can’t seem to tell > from > >> the configure.log)? > >> > > > > I was compiling codes on login nodes, and running codes on compute nodes. > > Login nodes do not have GPUs, but compute nodes do have GPUs. > > > > Just to be clear, the same thing (code, machine) with PETSc-3.16.1 worked > > perfectly. I have this trouble with PETSc-main. > > I assume you can > > export PETSC_OPTIONS='-device_enable lazy' > > and it'll work. > > I think this should be the default. The main complaint is that timing the > first GPU-using event isn't accurate if it includes initialization, but I > think this is mostly hypothetical because you can't trust any timing that > doesn't preload in some form and the first GPU-using event will almost > always be something uninteresting so I think it will rarely lead to > confusion. Meanwhile, eager initialization is viscerally disruptive for > lots of people. >
