Obviously some people do want GPFS, if they can afford it, but Cori uses Lustre
Data model at CERN does not match the one of a supercomputer. CERN data are not processed locally but distributed and spread to ~100 of participating institute in the experiment.
Moreover, "personal opinion", GPFS is crap. It's an old relic from the 90s that has so many quirk and problem of design that it would deserves an entire conference on it. Plus the fact it's proprietary and expensive.
The only reason that make GPFS still alive is that for a long time, the only alternative was Lustre, and Lustre is even worst.
Comments
Data model at CERN does not match the one of a supercomputer. CERN data are not processed locally but distributed and spread to ~100 of participating institute in the experiment.
Moreover, "personal opinion", GPFS is crap. It's an old relic from the 90s that has so many quirk and problem of design that it would deserves an entire conference on it. Plus the fact it's proprietary and expensive.
The only reason that make GPFS still alive is that for a long time, the only alternative was Lustre, and Lustre is even worst.