Changed how the -l option works. Now you choose the type of datapacket
-l i incompressible data packets
-l incompressible incompressible data packets
-l timestamp timestamped data packets
-l t timestamped data packets
-l offset offset data packets
-l o offset data packets
-G option now is either the seed for the incompressible random packets
or the timestamp, depending on the input to the -l option.
-G will no long timestamp packets on its own without the additon of -l timestamp or -l t
I kept shorter versions of the options for the sake of typing sanity.
GPFS supports a "gpfs_fcntl" method for hinting various things,
including "i'm about to write this block of data". Let's see if, for
the cost of a few system calls, we can wrangle the GPFS locking system
into allowing concurrent access with less overhead. (new IOR parameter
gpfsHintAccess)
Also, drop all locks on a file immediately after open/creation in the
shared file case, since we know all processes will touch unique regions
of the file. It may or may not be a good idea to release all file locks
after opening. Processes will then have to re-acquire locks already
held. (new IOR parameter gpfsReleaseToken)
Karsten Weiss