You start with BLAS being a factor 2 off, and then go to PETSc, and are another couples of factors off, and then the actual app the scientist wrote, which many use all of the above and the kitchen sink, where every piece and the pieces they use are all a couple of factors off, and then your scientist app is at 0.01% of peak.
If you have used Sierra since the beginning, we have seen significant performance increases over the years, because the people using it have actually been discovering and then either getting IBM to fix, or fixing themselves, most of the software.
Compared with Power 10, I'd say that Power 9 is "mainstream" (many clusters available), and from the Power 9 CPUs in existence, IBM's are the most mainstream of them all.
Take the Power 10 ISA, build your own CPU that significantly differs from IBM's, and good luck with optimizing all the software above. It can be done, and dumping it on a couple of HPC sites where then scientists and staff won't have any change but to use it for 4-6 years is a good way to get that done.
But for a private company that just wants to deliver value, ARM is just a much better deal, cause it saves them from having to do any of this.
If you have used Sierra since the beginning, we have seen significant performance increases over the years, because the people using it have actually been discovering and then either getting IBM to fix, or fixing themselves, most of the software.
Compared with Power 10, I'd say that Power 9 is "mainstream" (many clusters available), and from the Power 9 CPUs in existence, IBM's are the most mainstream of them all.
Take the Power 10 ISA, build your own CPU that significantly differs from IBM's, and good luck with optimizing all the software above. It can be done, and dumping it on a couple of HPC sites where then scientists and staff won't have any change but to use it for 4-6 years is a good way to get that done.
But for a private company that just wants to deliver value, ARM is just a much better deal, cause it saves them from having to do any of this.