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Dell HPC Lustre Storage solution with Intel Omni-Path
IOzone Sequential Reads -
iozone -i 1 -c -e -w -r 1024K -I -s $Size -t $Thread -+n -+m /root/list.$Thread
IOzone IOPS Random Reads / Writes –
iozone -i 2 -w -c -O -I -r 4K -s $Size -t $Thread -+n -+m /root/list.$Thread
IOzone Command Line
Arguments
Description
-i 0
Write test
-i 1
Read test
-i 2
Random IOPS test
-+n
No retest
-c
Includes close in the timing calculations
-e
Includes flush in the timing calculations
-r
Records size
-s
File size
-+m
Location of clients to run IOzone on when in clustered mode
-I
Use O_Direct
-w
Does not unlink (delete) temporary file
-+n
No retests selected
-O
Return results in OPS
The O_Direct command line parameter (“-I”) allows us to bypass the cache on the compute nodes
where the IOzone threads are running.
MDtest - Metadata
Files Operations -
mpirun -np $Threads -rr --hostfile /share/mdt_clients/mdtlist.$Threads /share/mdtest/mdtest.intel
-v -d /mnt/lustre/perf_test24-1M -i $Reps -b $Dirs -z 1 -L -I $Files -y -u -t -F
MDtest
Command Line Arguments
Description
-d
the directory in which the tests will run
-v
verbosity (each instance of option increments by one)
-i
number of iterations the test will run
-b
branching factor of hierarchical directory structure
-z
depth of hierarchical directory structure
-L
files only at leaf level of tree
-I
number of items per directory in tree
-y
sync file after writing
-u
unique working directory for each task
-t
time unique working directory overhead
-F
perform test on files only (no directories)
-D
perform test on directories only (no files)
References
Dell Storage for HPC with Intel EE for Lustre Solution Brief
http://salesedge.dell.com/doc?id=0901bc82808e334f&ll=d&pm=160376162
Dell HPC Lustre Solution Configuration Guide
* Contact your Dell Sales Rep for this document
Dell PowerVault MD3420
http://www.dell.com/support/home/us/en/04/product-support/product/powervault-
md3420/research