IOR-3.1.0: MPI Coordinated Test of Parallel I/O ior WARNING: fsync() only available in POSIX/MMAP. Using value of 0. Began: Mon Jun 18 10:09:38 2018 Command line used: /home/users/kunkel/io-500-dev/bin/ior -w -C -Q 1 -g -G 27 -k -e -t 2048k -b 20g -F -o /home/users/kunkel/io-500-dev/datafiles/io500.2018.06.18-10.09.35/ior_easy/ior_file_easy Machine: Linux host162.jc.rl.ac.uk Test 0 started: Mon Jun 18 10:09:38 2018 Summary: api = MPIIO (version=3, subversion=1) test filename = /home/users/kunkel/io-500-dev/datafiles/io500.2018.06.18-10.09.35/ior_easy/ior_file_easy access = file-per-process ordering in a file = sequential offsets ordering inter file= constant task offsets = 1 clients = 64 (4 per node) repetitions = 1 xfersize = 2 MiB blocksize = 20 GiB aggregate filesize = 1280 GiB access bw(MiB/s) block(KiB) xfer(KiB) open(s) wr/rd(s) close(s) total(s) iter ------ --------- ---------- --------- -------- -------- -------- -------- ---- write 3703 20971520 2048.00 0.187317 353.78 0.029692 353.98 0 Max Write: 3702.80 MiB/sec (3882.67 MB/sec) Summary of all tests: Operation Max(MiB) Min(MiB) Mean(MiB) StdDev Max(OPs) Min(OPs) Mean(OPs) StdDev Mean(s) Test# #Tasks tPN reps fPP reord reordoff reordrand seed segcnt blksiz xsize aggsize API RefNum write 3702.80 3702.80 3702.80 0.00 1851.40 1851.40 1851.40 0.00 353.98095 0 64 4 1 1 1 1 0 0 1 21474836480 2097152 1374389534720 MPIIO 0 Finished: Mon Jun 18 10:15:32 2018