Fig. 9
From: Upgrading a high performance computing environment for massive data processing
Data transfer traces of COMPSs while running Wordcount. a Wordcount on a common file system (C): application ends around 163 s. b Wordcount using the HDFS API (H1): application ends in around 105 s. Blue bars represent the execution of the master and the 8 workers (identified to the left of the vertical axis). Red lines represent data transfers orchestrated by COMPSs during execution. They connect the bar of the two communicating nodes; horizontally, they indicate the duration of each transfer. Vertical lines represent very short data transfers, whose duration is not discernible at that time scale