Systems for interconnecting and configuring plurality of memory elements by control of mode signals

• US 5,146,606 A
• Filed: 03/21/1990
• Issued: 09/08/1992
• Est. Priority Date: 09/18/1986
• Status: Expired due to Term

• Current Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Original Assignee: Digital Equipment Corporation (HP Inc.)
• Inventors: Grondalski, Robert S.
• Primary Examiner(s): Lee, Thomas C.
• Assistant Examiner(s): Mohamed, Ayni
• Application Number:
  US07/496,886
• Time in Patent Office: 902 Days
• Field of Search: 364/200 MS File, 364/900 MS File
• US Class Current: 712/14
• CPC Class Codes: G06F 15/8023 Two dimensional arrays, e.g. mesh, torus
• CPC Class Codes: G11C 29/006 at wafer scale level, i.e. wafer scale integration [WSI]

Abstract

An array processing system including a plurality of processing elements each including a processor and an associated memory module, the system further including a router network over which each processing element can transfer messages to other random processing elements, a mechanism by which a processor can transmit data to one of four nearest-neighbor processors. In addition, the processing elements are divided into groups each with four processing elements, in which one of the processing elements can access data in the other processing elements'"'"' memory modules. The routing network switches messages in a plurality of switching stages, with each stage connecting to the next stage through communications paths that are divided into groups, each group, in turn being associated with selected address signals. A communications path continuity test circuit associated with each path detects any discontinuity in the communications path and disables the path. Thus, the stage may attempt to transfer a message over another path associated with the same address.

Claims

1. An array processing system comprising:

A. a plurality of processing element means for processing data in response to instructions;

B. a plurality of memory means, corresponding to the number of processing element means, each said memory means for storing data in a plurality of storage locations each identified with a different one of said processing element means, said storage locations addressable by each said processor element means defining the address space for that processor element means; and

C. memory interconnection means connected to all of said processing element means and all of said memory means responsive to address signals defining an address and a mode signal having one of a plurality of conditions for coupling data between said memory means and said processing element means, said memory interconnection means being responsive to a first condition of said mode signal selected from said plurality of conditions for coupling data between each of said processing element means and its identified memory means, and responsive to a second condition of said mode signal selected from said plurality of conditions for coupling data between selected ones of said processing element means and memory means identified with others of said processing element means such that the address space for said selected ones of said processing element means is expanded to include the address space of said other processing element means.

2. An array processing system as defined in claim 1 wherein said plurality of processing element means is divided into a plurality of groups each having a predetermined number of processing element means, said memory interconnection means coupling data between each of said processing element means in each group and the identified memory means in response to said mode signal having said first condition and between a selected one of said processing element means in each group and a said memory means in each group identified with another processing element means in said group in response to said second condition of said mode signal.

3. An array processing system as defined in claim 2 in which said mode signal has a plurality of conditions corresponding to the number of processing element means in a processing element means group, said memory interconnection means including means for selecting the memory means to engage in a transfer in response to the condition of said mode signal.

4. An array processing system as defined in claim 3 in which said memory interconnection means includes a plurality of module interconnection means each connected to a said processing element means in each group and the processing element means'"'"' identified memory means, said module interconnection means comprising:

A. data selector means connected to said selected processing element means and each said memory means in said group for transferring data between said selected processing element means and one of said memory means as determined by the condition of said mode signal; and

B. a plurality of gated transceiver means each connected to one of said other processing element means and the identified memory means enabled to couple data when said mode signal is in said first condition and otherwise disabled.

5. An array processing system as defined in claim 4 in which said memory interconnection means includes means for generating an enabling signal when said mode signal is in said first condition, each said transceiver means including:

A. a memory data transfer line connected to a memory means;

B. a processor data transfer line connected to a processing element means; and

C. pass transistor means connected to said memory data transfer line and said processor data transfer line having an on condition in response to the generation of said enabling signal and otherwise having an off condition.

6. An array processing system as defined in claim 5 further comprising means for supplying power at a predetermined voltage level, each said transceiver means further comprising means responsive to said enabling signal for connecting said processor data transfer line to said power supply means while said enabling signal is not being generated to thereby clamp the voltage of said processor data transfer line.

7. An array processing system as defined in claim 4 wherein said memory interconnection means includes:

A. memory selector means for selecting one of the memory means in each group in response to the condition of said mode signal, said memory means having;

i. a plurality of memory selector output line means each corresponding to one of the memory means in a group and

ii. decoding means responsive to said mode signal for selectively energizing one of said memory selector output line means in response to the condition of said mode signal;

B. each said gated transceiver means comprising;

i. processor data transfer line means connected to said identified processing element means for carrying data signals;

ii. memory data transfer line means connected to said identified memory means for carrying data signals;

iii. gate transistor means connected to said processor data transfer line means, said memory data transfer line means and one of said memory selector output line means for coupling data signals between said processor data transfer line means and said memory data transfer line means in response to the energization of the connected memory selector output line means.

C. said data selector means comprising;

i. selected processor data transfer line means connected to said selected processing element means for carrying data signals;

ii. selected memory data transfer line means connected to said memory means identified with said selected processing element means for carrying data signals; and

iii. a plurality of pass transistor means each connected to said processor data transfer line means and one of said memory data transfer line means or said selected memory data transfer line means for selectively coupling data signals between one of said memory data transfer line means or said selected memory data transfer line means or said processor data transfer line means in response to the energization of the connected memory selector output line means.

10. An array processing system as defined in claim 3 in which said memory interconnection means includes a plurality of module interconnection means each connected to a said processing element means and the processing element means'"'"' identified memory module, said module interconnection means comprising:

A. data selector means connected to said selected processing element means and said memory means identified with the processing element means for transferring data between said selected processing element means and one of said memory means as determined by the condition of said mode signal; and

B. a plurality of gated transceiver means each connected to one of said other processing element means and the identified memory means enabled to couple data when said mode signal is in said first condition and otherwise disabled.

11. An array processing system as defined in claim 10 in which said memory interconnection means includes means for generating an enabling signal when said mode signal is in said first condition, each said transceiver means including:

A. a memory data transfer line connected to a memory means;

B. a processor data transfer line connected to a processing element means; and

C. pass transistor means connected to said memory data transfer line and said processor data transfer line having an on condition in response to the generation of said enabling signal and otherwise having an off condition.

12. An array processing system as defined in claim 11 further comprising means for supplying power at a predetermined voltage level, each said transceiver means further comprising means responsive to said enabling signal for connecting said processor data transfer line to said power supply means while said enabling signal is not being generated to thereby clamp the voltage level of said processor data transfer line.

13. An array processing system as defined in claim 10 wherein said memory interconnection means includes:

A. memory selector means for selecting one of the memory means in response to the condition of said mode signal, said memory selector means having;

i. a plurality of memory selector output line means each corresponding to one of the memory means and

ii. decoding means responsive to said mode signal for selectively energizing one of said memory selector output line means in response to the condition of said mode signal;

B. each said gated transceiver means comprising;

i. processor data transfer line means connected to said identified processing element means for carrying data signals;

ii. memory data transfer line means connected to said identified memory means for carrying data signals;

iii. gate transistor means connected to said processor data transfer line means, said memory data transfer line means and one of said memory selector output line means for coupling data signals between said processor data transfer line means and said memory data transfer line means in response to the energization of the connected memory selector output line means;

C. said data selector means comprising;

i. selected processor data transfer line means connected to said selected processing element means for carrying data signals;

ii. selected memory data transfer line means connected to said memory means identified with said selected processing element means for carrying data signals; and

iii. a plurality of pass transfer means each connected to said processor data transfer line means and one of said memory data transfer line means or said selected memory data transfer line means for selectively coupling data signals between one of said memory data transfer line means or said selected memory data transfer line means and said processor data transfer line means in response to the energization of the connected memory selector output line means.

8. An array processing system comprising:

A. a plurality of processing element means for processing data in response to instructions;

B. a plurality of memory means, corresponding to the number of processing element means, each said memory means for storing data in a plurality of storage locations each identified by an address, each memory means being identified with a different one of said processing element means, said storage locations addressable by each said processor element means defining the address space for that processor element means; and

C. memory interconnection means connected to all of said processing element means and all of said memory means responsive to address signals defining an address and a mode signal having one of a plurality of conditions for coupling data between said memory means and said processing element means, said memory interconnection means being responsive to a first condition of said mode signal selected from said plurality of conditions for coupling data between each of said processing element means and its identified memory means, and responsive to a second condition of said mode signal selected from said plurality of conditions for coupling data between a selected one of said processing element means and a selected one of said memory means identified with another of said processing element means as determined by the condition of said mode signal such that the address space for said selected processing element means is expanded to include the address space of said other processing element means.

9. An array processing system as defined in claim 8 in which said mode signal has a plurality of conditions corresponding to the number of processing element means, said memory interconnection means including memory selector means for selecting the memory means to engage in a transfer in response to the condition of said mode signal.

14. An array processing system as defined in claim 8 wherein the second condition of said mode signal causes said memory interconnection means to decouple the selected memory means from the processing element means with which the selected memory means is identified so as to prevent any data transfer between that processing element and the selected memory means.

15. An array processing system as defined in claim 8 wherein the second condition of said mode signal causes said memory interconnection means to decouple all of said processing element means other than said selected processing element means from the plurality of memory means so as to prevent any data transfer between said other processing elements and any of said memory means.

16. An array processing system as defined in claim 15 wherein any condition of said mode signal other than the first condition of said mode signal causes said memory interconnection means to decouple all of said processing element means other than said selected processing element means from the plurality of memory means so as to prevent any data transfer between said other processing elements and any of said memory means.

17. An array processing system as defined in claim 15 wherein said memory interconnection means couples the selected processor to one of the other memories depending upon the state of the mode signal, there being sufficient number of conditions of the mode signal so that said selected processor can be connected selectively to any of the other memories.