mdtest

History

Rob Latham aa604c1d38 Teach IOR about GPFS hints (gpfs_fcntl) 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)	2013-10-03 18:07:49 -07:00
..
Makefile.am	Fix "make dist"	2012-01-08 20:31:01 -08:00
USER_GUIDE	Teach IOR about GPFS hints (gpfs_fcntl)	2013-10-03 18:07:49 -07:00

Rob Latham aa604c1d38 Teach IOR about GPFS hints (gpfs_fcntl)

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)

2013-10-03 18:07:49 -07:00

Makefile.am

Fix "make dist"

2012-01-08 20:31:01 -08:00

USER_GUIDE

Teach IOR about GPFS hints (gpfs_fcntl)

2013-10-03 18:07:49 -07:00