Mesmo Hardware, Mais de 15Gflops!

Após instalar o Rocks 4.1 no ultimo sábado consegui rodar o HPL graças aos binários para Athlon que um dos desenvolvedores do Rocks me enviou.

Houve um incidente muito curioso. Após completar a primeira etapa do HPL a régua de energia elétrica desarmou desligando todo o cluster. Quando os oitos nós estão com carga máxima o cluster consome 1056W. Os danos não foram grandes, apenas uma placa de vídeo.


A regua não aguentou os mais de 1000W e desarmou


Rodar o hpl é simples.

1 - Copie para o home do seu usuário os arquivos HPL e machines.

2 - $ export P4_GLOBMEMSIZE=100000000

3 - $ /opt/mpich/gnu/bin/mpirun -np 8 -machinefile machines /opt/hpl/gnu/bin/xhpl





A melhor marca foi 1.527e+01 Gflops!


A melhora de desempenho em relação ao teste feito em fevereiro deve-se principalmete ao overclock da memória. Agora ela esta operando a 333MHz contra 266MHz do teste de fevereiro.

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