Re: [petsc-users] FAQ about fast interconnect

2025-04-05 Thread Jose E. Roman via petsc-users
If you look at the top500 list, 50% of the machines have Infiniband and 37% Gigabit Ethernet. InfiniBand has a low latency of 3–5 microseconds, which is much lower than Ethernet's 20–80 microseconds. But Ethernet can be a cost-effective solution with reasonably good performance, provided that yo

[petsc-users] FAQ about fast interconnect

2025-03-31 Thread Klaij, Christiaan via petsc-users
The FAQ about the kind of parallel computers or clusters needed to use PETSc states: "any ethernet (even 10 GigE) simply cannot provide the needed performance." Does this statement still hold now that 100 GigE is common? The broader question is that we are buying a new cluster to run our in-hous