Experiment 1 was executed on a platform with up to 64 computing nodes plus one master node. Each node is a virtual machine configured as n1-standard-2 instance (2 vCPUs, 7.5 GB memory, CPU Intel Ivy Bridge). The virtual machines were allocated from 13 different availability zones in the Google Cloud: Asia East (3 zones), Europe West (3 zones), US Central (4 zones) e US East (3 zones). For this scalability test, both SparkBLAST and CloudBLAST were executed on platforms with 1, 2, 4, 8, 16, 32, and 64 nodes. The experiment was repeated six times for each platform size. Thus, Experiment 1 encompasses 2×7×6=84 executions in total, which demanded more than 350 h (wall clock) to execute. As an estimate on the amount of the required computational resources, this experiment consumed 2.420 vCPU-hours to execute on the Google Cloud.