Inventor
HOUGH ROGER E
US16 patents
Patents
16 patentsUS4604694AAug 5, 1986
Shared and exclusive access control
IBM199 citations99
US5600805AFeb 4, 1997
Pass-through for I/O channel subsystem call instructions for accessing shared resources in a computer system having a plurality of operating systems
IBM208 citations98
US5555414ASep 10, 1996
Multiprocessing system including gating of host I/O and external enablement to guest enablement at polling intervals
IBM217 citations98
US5317705AMay 31, 1994
Apparatus and method for TLB purge reduction in a multi-level machine system
IBM354 citations98
US5414851AMay 9, 1995
Method and means for sharing I/O resources by a plurality of operating systems
IBM273 citations97
US4779188AOct 18, 1988
Selective guest system purge control
IBM218 citations97
US4843541AJun 27, 1989
Logical resource partitioning of a data processing system
IBM493 citations96
US5452455ASep 19, 1995
Asynchronous command support for shared channels for a computer complex having multiple operating systems
IBM117 citations95
US5222215AJun 22, 1993
Cpu expansive gradation of i/o interruption subclass recognition
IBM87 citations95
US5253344AOct 12, 1993
Method and apparatus for dynamically changing the configuration of a logically partitioned data processing system
IBM119 citations94
US5404563AApr 4, 1995
Scheduling normally interchangeable facilities in multiprocessor computer systems
IBM64 citations93
US5381535AJan 10, 1995
Data processing control of second-level quest virtual machines without host intervention
IBM38 citations92
US5371867ADec 6, 1994
Method of using small addresses to access any guest zone in a large memory
IBM30 citations92
US5636373AJun 3, 1997
System for synchronizing logical clock in logical partition of host processor with external time source by combining clock adjustment value with specific value of partition
IBM57 citations91
US5301324AApr 5, 1994
Method and apparatus for dynamic work reassignment among asymmetric, coupled processors
IBM105 citations91
US5367661ANov 22, 1994
Technique for controlling channel operations in a host computer by updating signals defining a dynamically alterable channel program
IBM30 citations88