John T Flanagan

US Patent:

6338083, Jan 8, 2002

Filed:

Aug 20, 1999

Appl. No.:

09/379129

Inventors:

Daniel F. Casper - Poughkeepsie NY
Joseph C. Elliott - Hopwell Junction NY
Robert J. Dugan - Hyde Park NY
John R. Flanagan - Poughkeepsie NY
Giles R. Frazier - Austin TX
Catherine C. Huang - Poughkeepsie NY
Louis W. Ricci - Hyde Park NY

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 1300

US Classification:

709213

Abstract:

The present invention provides for a method of transferring information in a network computing system environment. The network environment includes a main storage coupled to a channel subsystem with a plurality of channels in processing communication with a control unit capable of coupling to a plurality of input/output devices. First packets of data are concurrently sent to and from the main storage. The operation of certain channel functions are also transferred to the control unit so that each command does not require a command response or an end notification response. Finally by certain commands are combined with the associated data of one or more of the data packets. In one embodiment of the present invention, an optical fabric is also in processing communication with said channels and control unit.

US Patent:

6473782, Oct 29, 2002

Filed:

Aug 20, 1999

Appl. No.:

09/379150

Inventors:

Daniel F. Casper - Poughkeepsie NY
Joseph C. Elliott - Hopewell Junction NY
Robert J. Dugan - Hyde Park NY
John R. Flanagan - Poughkeepsie NY
Giles R. Frazier - Austin TX
Catherine C. Huang - Poughkeepsie NY
Louis W. Ricci - Hyde Park NY

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 1300

US Classification:

709201

Abstract:

The present invention provides for a method of transferring information in a network computing system environment. The network environment includes a main storage coupled to a channel subsystem with a plurality of channels which is in processing communication with a control unit capable of coupling to a plurality of input/output devices. At first the packets of data are sent concurrently to and from the main storage. Next execution of certain channel functions are transferred to the control unit so that certain commands can be combined with the data packets in one sequence. Finally only one start data command and only one end command notification needs to be sent before and after a plurality of data packets is transferred respectively. In one embodiment another method is employed in the same network computing system environment having the steps of: fetching said command from said main storage; fetching associated data from said main storage; and transferring said fetched command along with said fetched associated data to said control unit.

US Patent:

6671740, Dec 30, 2003

Filed:

May 12, 2000

Appl. No.:

09/570290

Inventors:

Patricia G. Driever - Poughkeepsie NY
John R. Flanagan - Poughkeepsie NY
Robert P. Jewett - Georgetown TX

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 1300

US Classification:

709249, 710 62

Abstract:

Channel-to-channel communications is provided by integrating channel-to-channel functionality into one or more communication channels of a computing environment which may include heterogenous computer systems. The one or more channels having the integrated CTC function are non-dedicated channels also capable of conventional channel functionality. Work units at such channels are forwarded to either the CTC function or the channel function based on work unit type. Further, a facility is provided for automatically deciding which of the first channel and the second channel is to provide the CTC function for a CTC connection. Partition-to-partition communication can also be accomplished using the integrated CTC function by establishing an internal logical path between a first logical partition and the CTC function and a second logical path between a second logical partition and the CTC function.

US Patent:

6687766, Feb 3, 2004

Filed:

Jan 12, 2000

Appl. No.:

09/481715

Inventors:

Daniel F. Casper - Poughkeepsie NY
Robert J. Dugan - Hyde Park NY
John R. Flanagan - Poughkeepsie NY
Catherine C. Huang - Poughkeepsie NY
Louis W. Ricci - Hyde Park NY

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 1314

US Classification:

710 20, 710 21, 710 29, 714720

Abstract:

The present invention provides a method for fibre channel control units to execute commands locally when a channel sends a repeat execute indicator in conjunction with certain other field settings, wherein the control unit will repeat and chain control words until certain predefined conditions occur.

US Patent:

6687853, Feb 3, 2004

Filed:

May 31, 2000

Appl. No.:

09/583670

Inventors:

Patricia G. Driever - Poughkeepsie NY
John R. Flanagan - Poughkeepsie NY
Paul S. Frazer - Poughkeepsie NY
Catherine C. Huang - Poughkeepsie NY
Bernhard Laubli - Poughkeepsie NY
Louis W. Ricci - Hyde Park NY

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 1100

US Classification:

714 16, 714 43

Abstract:

A method, program product and apparatus for checkpointing for recovery of channels in a data processing system using a protocol which allows for multiplexing operations at the frame level and streaming of commands and data. For unsuccessful retries, the correct primary CCW address is reported back to software indicating the extent to which the channel completed modifying and accessing S/390 storage.

US Patent:

6728772, Apr 27, 2004

Filed:

May 12, 2000

Appl. No.:

09/569755

Inventors:

Patricia G. Driever - Poughkeepsie NY
John R. Flanagan - Poughkeepsie NY
Robert P. Jewett - Georgetown TX

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 1516

US Classification:

709228, 709249, 709250, 370431, 370464

Abstract:

Channel-to-channel communications is provided by integrating channel-to-channel functionality into one or more communication channels of a computing environment which may include heterogenous computer systems. The one or more channels having the integrated CTC function are non-dedicated channels also capable of conventional channel functionality. Work units at such channels are forwarded to either the CTC function or the channel function based on work unit type. Further, a facility is provided for. automatically deciding which of the first channel and the second channel is to provide the CTC function for a CTC connection. Partition-to-partition communication can also be accomplished using the integrated CTC function by establishing an internal logical path between a first logical partition and the CTC function and a second logical path between a second logical partition and the CTC function.

US Patent:

6738921, May 18, 2004

Filed:

Mar 20, 2001

Appl. No.:

09/812321

Inventors:

Tinchee Lo - Fishkill NY
John D. Flanagan - Rhinebeck NY

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 104

US Classification:

713500, 700 1, 700 16, 700 90, 700 14, 714726, 714727, 714731, 714732, 714733, 714734, 713400, 713401, 713601, 713503, 713600, 326 16, 326 29, 326 93, 702117, 327141, 327258, 327259, 327295, 716 6

Abstract:

A clock controller and clock generating method are provided for AC self-test timing analysis of a logic system. The controller includes latch circuitry which receives a DC input signal at a data input, and a pair of continuous out-of-phase clock signals at capture and launch clock inputs thereof. The latch circuitry outputs two overlapping pulses responsive to the DC input signal going high. The two overlapping pulses are provided to waveform shaper circuitry which produces therefrom two non-overlapping pulses at clock speed of the logic system to be tested. The two non-overlapping pulses are a single pair of clock pulses which facilitate AC self-test timing analysis of the logic system.

US Patent:

6859439, Feb 22, 2005

Filed:

May 12, 2000

Appl. No.:

09/569567

Inventors:

Patricia G. Driever - Poughkeepsie NY, US
John R. Flanagan - Poughkeepsie NY, US
Robert P. Jewett - Georgetown TX, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

H04L012/26
G06F015/16

US Classification:

370251, 370419, 709228, 709230, 709250

Abstract:

Channel-to-channel communications is provided by integrating channel-to-channel functionality into one or more communication channels of a computing environment which may include heterogenous computer systems. The one or more channels having the integrated CTC function are non-dedicated channels also capable of conventional channel functionality. Work units at such channels are forwarded to either the CTC function or the channel function based on work unit type. Further, a facility is provided for automatically deciding which of the first channel and the second channel is to provide the CTC function for a CTC connection. Partition-to-partition communication can also be accomplished using the integrated CTC function by establishing an internal logical path between a first logical partition and the CTC function and a second logical path between a second logical partition and the CTC function.