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Surely you can get more memory/IO/CPU on a mainframe than a commodity server, no?
by azinman2 6y ago
Surely you can get more memory/IO/CPU on a mainframe than a commodity server, no?
- wolf550e 6y agoNo. A mainframe is not a supercomputer. You can get more cores, more dram, more iops for less money if you don't need high reliability in a single machine (because your software handles nodes failing) and if you don't need compatibility with binaries from the 60s. The chip is impressive, because they don't skimp on costs, because they sell them for a million a pop, but consider how many ryzen on xeon cores you can get for that price, with all the cool DRAM and IO tech you want. https://en.wikichip.org/wiki/ibm/microarchitectures/z15 https://en.wikichip.org/wiki/ibm/microarchitectures/z15 compare with: https://en.wikichip.org/wiki/intel/xeon_platinum https://en.wikichip.org/wiki/intel/xeon_platinum https://en.wikichip.org/wiki/intel/microarchitectures/cascade_lake https://en.wikichip.org/wiki/intel/microarchitectures/cascad...
- tyingq 6y agoMax cores is 190, so no on CPU. Memory and IO, perhaps, but it's unusual to put more into a single partition than you would into a typical large X86-64 server. And it's a lot more pricey.