SCBI_MapReduce, a New Ruby Task-Farm Skeleton for Automated Parallelisation and Distribution in Chunks of Sequences: The Implementation of a Boosted Blast+

Table 3

Analysis of compression and encryption of the same real-world sequence jobs in Table 1. Both the execution times (in seconds) and the percent of this time used by the manager are provided.

Cores	Execution time^a (s)				Manager time (%)
	1X	100X	250X	2000X	1X	100X	250X	2000X
2^b	9482	8178	7270	10279	4.73	0.56	0.58	0.44
4	4619	4307	3814	5234	2.76	0.47	0.49	0.39
8	2359	2156	2165	3145	1.76	0.43	0.43	0.35
16	1274	1085	1142	1692	1.54	0.42	0.40	0.33
32	913	553	571	905	2.40	0.51	0.52	0.37
64	821	282	294	540	3.54	0.57	0.55	0.43
128	709	163	173	346	3.87	0.62	0.61	0.39

 ^aCompression was performed with ZLib and encrypted with AES-256; any other method installed on computers can be used.
^bThere is no need of compression or encryption using one single core.