Table 3 The computed lower bounds Tlb in seconds
From: A MapReduce-based Adjoint method for preventing brain disease
HDFS size (GB) | Cholesky (s) | Indirect TSQR (s) | Direct TSQR (s) | Householder QR (s) | MR-AM (s) |
|---|---|---|---|---|---|
32 | 802 | 802 | 1232 | 8224 | 625 |
64 | 536 | 536 | 618 | 10,055 | 467 |
128 | 366 | 366 | 10,475 | 30,994 | 450 |