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BSP/CGM Algorithms - USP

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The <strong>BSP</strong> Model<br />

7/24<br />

• Parâmetros:<br />

– n : tamanho do problema.<br />

– p: número de processadores com memória local.<br />

– L: tempo máximo de um superpasso (periodicidade)<br />

- latência.<br />

– g: taxa de eficiência da computação/comunicação.<br />

• Custo (superpasso i): w i + gh i + L, w i = max{L, t 1 , . . . , t p }<br />

e h i = max{L, c 1 , . . . , c p }<br />

• Custo Total: W + gH + LT , W = ∑ p<br />

i=1 w i, H = ∑ p<br />

i=1 h i.

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