Johannes M Sayre

US Patent:

20060034167, Feb 16, 2006

Filed:

Jul 30, 2004

Appl. No.:

10/903322

Inventors:

Donald Grice - Gardiner NY, US
Dominique Heger - Dripping Springs TX, US
Steven Martin - Poughkeepsie NY, US
Johannes Sayre - Kingston NY, US
Amor Scheftel - Millwood NY, US
Appoloniel Tankeh - Fishkill NY, US

Assignee:

INTERNATIONAL BUSINESS MACHINES CORPORATION - ARMONK NY

International Classification:

H04L 12/26

US Classification:

370229000

Abstract:

A system and method are provided for facilitating zero-copy communications between computing systems of a group of computing systems. The method includes allocating, in a first computing system of the group of computing systems, a pool of privileged communication resources from a privileged resource controller to a communications controller. The communications controller designates the privileged communication resources from the pool for use in handling individual ones of the zero-copy communications, thereby avoiding a requirement to obtain individual ones of the privileged resources from the owner of the privileged resources at setup time for each zero-copy communication.

US Patent:

20090245518, Oct 1, 2009

Filed:

Mar 26, 2008

Appl. No.:

12/056202

Inventors:

Myung M. Bae - Pleasant Valley NY, US
Christopher V. DeRobertis - Hopewell Junction NY, US
Robert K. Gardner - Saugerties NY, US
John R. Hare - Highland NY, US
Felipe Knop - Lagrangeville NY, US
Serban C. Maerean - Ridgefield CT, US
Johannes Sayre - Kingston NY, US
Hemant R. Suri - Poughkeepsie NY, US

International Classification:

H04L 9/16
H04L 9/32
H04K 1/00

US Classification:

380273, 713161

Abstract:

A system to improve communication security in cluster machine processing may include interconnected computers that can jointly process data. The system may also include a shared secret key used by each of the interconnected computers to encrypt, decrypt, and/or authenticate data being sent, or received, from one of the interconnected computers to another of the interconnected computers. The system may further include a new shared secret key used by each of the interconnected computers to encrypt, decrypt, and/or authenticate data being sent, or received, from one of the interconnected computers to another of the interconnected computers. In addition, the new shared secret key may coexist with the shared secret key without adversely affecting the joint processing of data performed by the plurality of interconnected computers.

US Patent:

7543046, Jun 2, 2009

Filed:

May 30, 2008

Appl. No.:

12/130080

Inventors:

Myung M. Bae - Pleasant Valley NY, US
Steven R. Champagne - Carmel IN, US
Robert K. Gardner - Saugerties NY, US
Felipe Knop - Lagrangeville NY, US
Johannes M. Sayre - Kingston NY, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 15/177
G06F 15/173
G06F 15/16
G06F 11/00

US Classification:

709220, 709221, 709222, 709223, 709224, 709225, 709226, 709229, 714 1, 714 2, 714 3, 714 4, 714100, 715734, 715735, 715736

Abstract:

A method for managing node-specific quorum roles in a cluster of nodes. The method comprises assigning a configuration change of node role attributes to a node in the cluster, with each attribute being represented by a bit of a binary value. The binary value corresponding to the specified node role attributes is converted to an integer value and the integer value is stored in a node record associated with the node. The node record is accessed to isolate each bit of the integer value associated with the node and the node role attributes assigned to the node are identified from each of the isolated bits of the integer value associated with the node. A determination of whether the configuration change can be safely supported by a configuration quorum of nodes required to represent the cluster's configuration accurately is made based on the identified node role attributes. An additional determination of whether a required operational quorum of nodes permits access to critical and shared resources is made based on the identified node role attributes. Endorsement for the configuration change is sought from subsystems that may be affected by the configuration change.