On Fri, 11 Aug 2023, Jed Brown wrote: > Jacob Faibussowitsch <jacob....@gmail.com> writes: > > > More generally, it would be interesting to know the breakdown of installed > > CUDA versions for users. Unlike compilers etc, I suspect that cluster > > admins (and those running on local machines) are much more likely to be > > updating their CUDA toolkits to the latest versions as they often contain > > critical performance improvements. > > One difference is that some sites (not looking at you at all, ALCF) still run > pretty ancient drivers and/or have broken GPU-aware MPI with all but a > specific ancient version of CUDA (OLCF, LLNL). With a normal compiler, you > can choose to use the latest version, but with CUDA, people are firmly stuck > on old versions. >
Well Nvidia keeps phasing out support for older GPUs in newer CUDA releases - so unless GPUs are upgraded - they can't really upgrade (to latest) CUDA versions .. [this is in addition to the usual reasons admins don't do software upgrades... Ignore clusters - our CUDA CI machine has random stability issues - so we had to downgrade/freeze cuda/driver versions to keep the machine functional] Satish
