公开(公告)号：DE3689990D1

公开(公告)日：1994-09-01

申请号：DE3689990

申请日：1986-05-23

Applicant: IBM

Inventor： HAMMER WILLIAM ELDER ,  SCHWANE WALTER HENRY ,  ZIECINA FREDERICK JOSEPH

IPC: G06F9/46 ,  G06F13/00 ,  G06F15/16 ,  G06F15/177 ,  H04L29/00

Abstract: 0 An interprocess data transfer facility provides transfer of data between two processes. Work requests are represented by notes that are placed on a queue of a server process for performing the work. The requestor process which created a.work request does not trans-fer the work request from storage it controls until requested by the server. The actual transfer of the work request occurs without interaction of the requestor. The use of notes which represent the work requests permits complex queue- ing of notes and hence handling of the requests in the order desired by the server.

公开(公告)号：DE3688893D1

公开(公告)日：1993-09-23

申请号：DE3688893

申请日：1986-05-23

Applicant: IBM

Inventor： SCHWANE WALTER HENRY ,  ZIECINA FREDERICK JOSEPH

IPC: G06F9/46 ,  G06F13/00 ,  G06F15/16 ,  G06F15/177 ,  H04L29/00

Abstract: An interprocess communication facility in a processor system provides for communication of data between at least two processes. The facility supports a plurality of different data transfer modes which are provided by storage management services of the processor or processors. A process interface provides a common interface for each communicating process to select data transfer modes independently of the data transfer mode chosen by the other communicating process. A data access control function is coupled to the process interface and to the storage management services. The data access control function controls the use of the storage management services as a function of the transfer modes chosen by the communicating processes. It is transparent to the processes as to which transfer mode was chosen by each other.

公开(公告)号：DE3853337T2

公开(公告)日：1995-10-05

申请号：DE3853337

申请日：1988-11-08

Applicant: IBM

Inventor： HAMMER WILLIAM ELDER ,  SCHWANE WALTER HENRY ,  ZIECINA FREDERICK JOSEPH

IPC: G06F13/42 ,  G06F9/46 ,  G06F13/28 ,  G06F15/16 ,  G06F15/177

公开(公告)号：SG9495G

公开(公告)日：1995-06-16

申请号：SG9495

申请日：1995-01-21

Applicant: IBM

Inventor： HAMMER WILLIAM ELDER ,  SCHWANE WALTER HENRY ,  ZIECINA FREDERICK JOSEPH

IPC: G06F9/46 ,  G06F9/50 ,  G06F9/54 ,  G06F15/16 ,  G06F15/177

Abstract: The flow of work requests in a server driven process to process communication environment is described. Logical connections between processes and bus managers interfacing bus units (50, 52) to an I/O bus (54) are assigned to connection groups for management by the bus managers. Each bus unit has its own connection groups for the logical connections. Bus unit resources are assigned to each connection group based on performance factors, and a series of bus unit messages are used to control the flow of work so that a group which has no more resources will not accept further work requests. The originator of the work requests will resequence rejected work requests and resend them when the connection group has freed up resources. A further mechanism is provided to facilitate work consistent with the server driven architecture when bus units do not have adequate DMA capabilities. Two ways of reversing control of transfer of work requests and data so that the server need not have master DMA capability are presented. Management of storage in a remote processor is used to transfer work and its associated data into storage accessible by a bus unit with slave DMA capability. The slave DMA bus unit then transfers the information into storage it manages. In another way of reversing the flow, a bus unit message is used to make the original server a requestor. The bus unit message contains information which varies the request sent by the requestor. In this manner, the server, which was the original requestor transfers information using its master DMA capability flow.

公开(公告)号：DE3853337D1

公开(公告)日：1995-04-20

申请号：DE3853337

申请日：1988-11-08

Applicant: IBM

Inventor： HAMMER WILLIAM ELDER ,  SCHWANE WALTER HENRY ,  ZIECINA FREDERICK JOSEPH

IPC: G06F13/42 ,  G06F9/46 ,  G06F13/28 ,  G06F15/16 ,  G06F15/177

公开(公告)号：DE3851507T2

公开(公告)日：1995-03-30

申请号：DE3851507

申请日：1988-09-27

Applicant: IBM

Inventor： HAMMER WILLIAM ELDER ,  SCHWANE WALTER HENRY ,  ZIECINA FREDERICK JOSEPH

IPC: G06F9/46 ,  G06F9/50 ,  G06F9/54 ,  G06F15/16 ,  G06F15/177

Abstract: The flow of work requests in a server driven process to process communication environment is described. Logical connections between processes and bus managers interfacing bus units (50, 52) to an I/O bus (54) are assigned to connection groups for management by the bus managers. Each bus unit has its own connection groups for the logical connections. Bus unit resources are assigned to each connection group based on performance factors, and a series of bus unit messages are used to control the flow of work so that a group which has no more resources will not accept further work requests. The originator of the work requests will resequence rejected work requests and resend them when the connection group has freed up resources. A further mechanism is provided to facilitate work consistent with the server driven architecture when bus units do not have adequate DMA capabilities. Two ways of reversing control of transfer of work requests and data so that the server need not have master DMA capability are presented. Management of storage in a remote processor is used to transfer work and its associated data into storage accessible by a bus unit with slave DMA capability. The slave DMA bus unit then transfers the information into storage it manages. In another way of reversing the flow, a bus unit message is used to make the original server a requestor. The bus unit message contains information which varies the request sent by the requestor. In this manner, the server, which was the original requestor transfers information using its master DMA capability flow.

公开(公告)号：DE3852378D1

公开(公告)日：1995-01-19

申请号：DE3852378

申请日：1988-09-13

Applicant: IBM

Inventor： BATRA SURINDER PAUL ,  HAMMER WILLIAM ELDER ,  MARQUART DAVID WAYNE ,  SCHWANE WALTER HENRY ,  ZIECINA FREDERICK JOSEPH ,  LUSHINSKY GENE ARTHUR

IPC: G06F13/28 ,  G06F13/42 ,  G06F15/16 ,  G06F15/177 ,  G06F9/46

Abstract: The flow of work requests in a server driven process to process communication environment is described. Logical connections between processes and bus managers interfacing bus units (50, 52) to an I/O bus (54) are assigned to connection groups (86, 88) for management by the bus managers. Each bus unit has its own connection groups for the logical connections. Bus unit resources are assigned to each connection group based on performance factors, and a series of bus unit messages are used to control the flow of work so that a group which has no more resources will not accept further work requests. The originator of the work requests will resequence rejected work requests and resend them when the connection group has freed up resources. A further mechanism is provided to facilitate work consistent with the server driven architecture when bus units do not have adequate DMA capabilities. Two ways of reversing control of transfer of work requests and data so that the server need not have master DMA capability are presented. Management of storage in a remote processor is used to transfer work and its associated data into storage accessible by a bus unit with slave DMA capability. The slave DMA bus unit then transfers the information into storage is manages. In another way of reversing the flow, a bus unit message is used to make the original server a requestor. The bus unit message contains information which varies the request sent by the requestor. In this manner, the server, which was the original requestor transfers information using its master DMA capability flow.

公开(公告)号：ES2059555T3

公开(公告)日：1994-11-16

申请号：ES88480039

申请日：1988-09-27

Applicant: IBM

Inventor： HAMMER WILLIAM ELDER ,  SCHWANE WALTER HENRY ,  ZIECINA FREDERICK JOSEPH

IPC: G06F9/46 ,  G06F9/50 ,  G06F9/54 ,  G06F15/16 ,  G06F15/177

Abstract: The flow of work requests in a server driven process to process communication environment is described. Logical connections between processes and bus managers interfacing bus units (50, 52) to an I/O bus (54) are assigned to connection groups for management by the bus managers. Each bus unit has its own connection groups for the logical connections. Bus unit resources are assigned to each connection group based on performance factors, and a series of bus unit messages are used to control the flow of work so that a group which has no more resources will not accept further work requests. The originator of the work requests will resequence rejected work requests and resend them when the connection group has freed up resources. A further mechanism is provided to facilitate work consistent with the server driven architecture when bus units do not have adequate DMA capabilities. Two ways of reversing control of transfer of work requests and data so that the server need not have master DMA capability are presented. Management of storage in a remote processor is used to transfer work and its associated data into storage accessible by a bus unit with slave DMA capability. The slave DMA bus unit then transfers the information into storage it manages. In another way of reversing the flow, a bus unit message is used to make the original server a requestor. The bus unit message contains information which varies the request sent by the requestor. In this manner, the server, which was the original requestor transfers information using its master DMA capability flow.