[petsc-users] FAQ about fast interconnect

[Klaij, Christiaan]

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-house CFD solver ReFRESCO. Typical production runs involve
meshes up-to a few hundred million cells with half a dozen to a
dozen equations. Most of the time is spend in KSPSolve. What kind
of interconnect should we consider?

Chris 
dr. ir. Christiaan Klaij
 | Senior Researcher | Research & Development
T +31 317 49 33 44 |  C.Klaij at marin.nl | https://urldefense.us/v3/__http://www.marin.nl__;!!G_uCfscf7eWS!dt6x5cNbKBO3l1-VxdzJE9uFUPtHLCnCR8P_q3-23XmiXKMfKyoNWokTX4wRbgFq3HSDmSVi6AIdO8MFA71dUnQ$ 
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