Task Balanced Workflow Scheduling Technique considering Task Processing Rate in Spot Market

Table 1

Information of resource types.

Instance type; name	Compute; unit	Virtual; cores	Spot price; min	Spot price; average	Spot price; max
m1.small; (Standard)	1 EC2	1 core; (1 EC2)	$0.038	$0.040	$0.053
m1.large; (Standard)	4 EC2	2 cores; (2 EC2)	$0.152	$0.160	$0.168
m1,xlarge; (Standard)	8 EC2	4 cores; (2 EC2)	$0.076	$0.080	$0.084
c1.medium; (High-CPU)	5 EC2	2 cores; (2.5 EC2)	$0.304	$0.323	$1.52
c1.xlarge; (High-CPU)	20 EC2	8 cores; (2.5 EC2)	$0.532	$0.561	$0.588
m2.xlarge; (High-Memory)	6.5 EC2	2 cores; (3.25 EC2)	$0.532	$0.561	$0.588
m2.2xlarge; (High-Memory)	13 EC2	4 cores; (3.25 EC2)	$0.532	$0.561	$0.588
m2.4xlarge; (High-Memory)	26 EC2	8 cores; (3.25 EC2)	$1.064	$1.22	$1.176