Inter-Site Testing Sample Clauses

Inter-Site Testing. At the time of writing these tests are still ongoing and only preliminary results are available. These are using DKRZ as a source and replicating data to JSC using iRODS irsync command. The results are shown in Figure 20. These preliminary results show that to 30 concurrent threads irsyc performs well for intersite transfers, with throughput dropping from 45 MB/s for 5 concurrent transfers to 31MB/sec for 30 concurrent transfers of 2GB files. However, based on previous tests between INGV and CINECA we know that there is a database limitation that occurs which prevents more than a certain number of transfers occurring concurrently. This limitation is based on database configuration and can be mitigated to an extent by using different configurations or preventing too many concurrent transfers, but is a scalability limitation in the use of iRODS for bulk transfers.