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 Aug 20 19:11:31 2018 Command line used: /var/opt/cray/dws/mounts/batch/6335677_striped_scratch/bin/ior -r -R -C -Q 1 -g -G 27 -k -e -t 47008 -b 47008 -s 344787 -o /var/opt/cray/dws/mounts/batch/6335677_striped_scratch/datafiles/io500.2018.08.20-18.33.55/ior_hard/IOR_file Machine: Linux nid00143 Test 0 started: Mon Aug 20 19:11:31 2018 Summary: api = MPIIO (version=3, subversion=1) test filename = /var/opt/cray/dws/mounts/batch/6335677_striped_scratch/datafiles/io500.2018.08.20-18.33.55/ior_hard/IOR_file access = single-shared-file ordering in a file = sequential offsets ordering inter file= constant task offsets = 1 clients = 80 (8 per node) repetitions = 1 xfersize = 47008 bytes blocksize = 47008 bytes aggregate filesize = 1207.57 GiB access bw(MiB/s) block(KiB) xfer(KiB) open(s) wr/rd(s) close(s) total(s) iter ------ --------- ---------- --------- -------- -------- -------- -------- ---- read 7163 45.91 45.91 0.006607 172.62 0.011041 172.64 0 Max Read: 7162.59 MiB/sec (7510.52 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 read 7162.59 7162.59 7162.59 0.00 159771.12 159771.12 159771.12 0.00 172.64046 0 80 8 1 0 1 1 0 0 344787 47008 47008 1296619783680 MPIIO 0 Finished: Mon Aug 20 19:14:24 2018