Table 4

BLAST performance for large databases gives the average times (n = 3) for a W.ND-BLAST project to complete when querying 50 sequences on Class E machines against a 1.5 GB nucleotide database (too large to fit in physical memory). The times, shown in minutes and seconds, show a relatively large decrease in execution time when the number of machines is increased from one to seven nodes.

Sequence Number

Database Size

Number of Machines

Total Time(mm:ss)

50

1.59 GB

1

63:57

50

1.59 GB

7

12:14

Dowd et al. BMC Bioinformatics 2005 6:93   doi:10.1186/1471-2105-6-93