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Parallel performance prediction for multigrid codes on distributed memory architectures

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Figure

Fig. 1. Partitioning of a coarse and a fine mesh across four processors by assigning ablock of rows to each processor
Fig. 2. Domain partitions for algorithms m1 and m2. The dummy rows of processor phave indexes 0, n + 2 and 0, n + 1 for m1 and m2, respectively
Table 1. Parameters (a, b) and (α, β, γ) of the Tcomm models (4) and (5) respectively,obtained for np = 4 and for N(4) = 512,
Fig. 3. Linear model(both in seconds) on T = Tcomp + a + bN for Time predicted, and Time measured np = 64 processors, N(64) = 2048,
+2

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