Velocidade do Cluster: Sustained vs. Peak

Descobri como calcular a velocidade teorica de pico de um cluster. É muito fácil:

Peak GFLOPS = [CPUs] * [CPU clock rate (GHz)] * [CPU floating point issue rate]

O issue rate da sua CPUs descreve quantas operações de ponto flutuante ela pode computar por ciclo.
Um guia simplificado é: (Tipo de CPD: issue rate) Pentium 2: 1, Pentium 4: 2, Athlon XP: 3, Itanium 2: 4.

Por exemplo: 8 Atlhon XP 2800+(2,083 GHz) = 8 * 2,083 * 3 = 49,992 GFLOPS.

No caso do crick são 49,992 GFLOPS PEAK e 14,69 GFLOPS SUSTAINED

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