iogen - Generate I/O Requests
All Cray Research systems
Iogen is one of the device-beater tools.
open flags: raw, sync, ssd, ldraw, buffered
Number of iterations to run. 0 implies infinite.
Offset mode. One of: random, sequential, reverse.
-o Overlap flag.
output pipe (default is stdout)
specify raw io multiple instead of getting it from the
mounted on device. Only applies to regular files.
System calls to use for I/O. A list of: read, write,
reada, writea, ssread, sswrite
min transfer size
max transfer size
Mark Maule wrote the code.
Glen Overby wrote the man page.