Research and implementation on multi-mode parallel I/O benchmark Jetter
Xiaoxia Zhang · Computer Engineering and Applications Journal · 2008
This paper proposes a new multi-pattern parallel I/O benchmark called Jetter,which evaluates parallel I/O throughput with either the contiguous I/O pattern or the non-contiguous I/O pattern,in either the share-one-file model or the file-per-process model,by either the POSIX interface or the MPI-I/O interface.Jetter helps end users make sense of the pattern performance law and develop efficient applications in a platform.We have evaluated the parallel I/O bandwidth in a 32 CPU shared memory computer with Jetter.The results show that I/O pattern determines throughput.Optimizing I/O model,interface,etc in a pattern will improve bandwidth 2 or 3 times.