Table 4

Timing and cost for Crossbow experiments using reads from the Wang et al. study [5]

EC2 Nodes

1 master, 10 workers

1 master, 20 workers

1 master, 40 workers

Worker CPU cores

80

160

320

Wall clock time

6 h:30 m

4 h:33 m

2 h:53 m

Approximate cluster setup time

18 m

18 m

21 m

Approximate crossbow time

6 h:12 m

4 h:15 m

2 h:32 m

Approximate cost (US/Europe)

$52.36/$60.06

$71.40/$81.90

$83.64/$95.94

Costs are approximate and based on the pricing as of this writing, that is, $0.68 per extra-large high-CPU EC2 node per hour in the US and $0.78 in Europe. Times can vary subject to, for example, congestion and Internet traffic conditions.

Langmead et al. Genome Biology 2009 10:R134   doi:10.1186/gb-2009-10-11-r134