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. 2016 Nov 29;10:50. doi: 10.3389/fninf.2016.00050

Table 1.

Expected and measured memory usage.

Name	Memory Usage (expected)	Memory Usage (measured)
	# bytes	N = 6 · 10⁴	12 · 10⁴	24 · 10⁴	6 · 10⁴	12 · 10⁴	24 · 10⁴
`corrcoef`	4(N² + NT)	13.47	53.76	214.81	26.94	107.52
`corr`	4(N² + NT)	13.47	53.76	214.81	26.94	107.52
`IPN_fastCorr`	4(N² + NT)	13.47	53.76	214.81	26.99	107.63
`IPN_calLCAM`	? + 4NT				6.23	24.21	44.33
`FCMAT/half-stored/`r	2N(N − 1) + 8NT	6.82	27.05	107.75	6.83	27.06	107.75
r_t	$2 N (N - 1) + 4 N T + \frac{B}{8} N ⌈ T / B ⌉$	6.76	26.94	107.52	6.77	26.94	107.52
`on-demand/`r	8NT	0.11	0.23	0.46	0.12	0.24	0.46
r_t	$4 N T + \frac{B}{8} N ⌈ T / B ⌉$	0.06	0.12	0.24	0.06	0.12	0.24
`cache-based/`r	4C² + 8NT	0.36	0.48	0.71	0.37	0.48	0.71