Secure and efficient application data processing

Patent metadata

Field	Value
Publication number	US-10698854-B1
Application number	US-201916286905-A
Country	US
Kind code	B1
Filing date	Feb 27, 2019
Priority date	Feb 27, 2019
Publication date	Jun 30, 2020
Grant date	Jun 30, 2020

Abstract

A system architecture is provided and includes first and second processing units respectively communicative with an on-chip coherency unit and an accelerator communicative with the on-chip coherency unit. The accelerator is configured to execute an operation responsive to a call issued by one of the first and second processing units. The first processing unit is configured to set an asynchronous operation flag (AOF) to indicate that the second processing unit is to conduct an operation for the first processing unit. The second processing unit is configured to respond to the AOF by building scatter gather lists and subsequently issuing the call and feeding the scatter gather lists to the accelerator to facilitate execution of the operation by the accelerator.

First claim

What is claimed is:

1. A system architecture, comprising:
first and second processing units respectively communicative with an on-chip coherency unit; and
an accelerator communicative with the on-chip coherency unit,
the accelerator being configured to execute an operation responsive to a call issued by one of the first and second processing units,
the first processing unit being configured to set an asynchronous operation flag (AOF) to indicate that the second processing unit is to conduct an operation for the first processing unit,
the second processing unit being configured to respond to the AOF by building scatter gather lists and subsequently issuing the call and feeding the scatter gather lists to the accelerator to facilitate execution of the operation by the accelerator
wherein the scatter gather lists comprise absolute addresses and associated lengths for source data and target data of the operation.

2. The system architecture according to claim 1 , wherein the first and second processing units are each respectively provided as ones of multiple processing units respectively communicative with the on-chip coherency unit via first interfaces.

3. The system architecture according to claim 1 , wherein the on-chip coherency unit is communicative with external processors and controllers.

4. The system architecture according to claim 1 , further comprising page buffer units (PBUs) respectively communicative with the on-chip coherency unit via second interfaces and a memory core.

5. The system architecture according to claim 1 , wherein the accelerator is communicative with the on-chip coherency unit via a second interface comprising a direct memory access (DMA)-like interface.

6. The system architecture according to claim 1 , wherein the operation comprises a compression or decompression operation.

7. The system architecture according to claim 1 , wherein the first processing unit is further configured to:
determine whether to operate in one of a synchronous mode or an asynchronous mode;
issue the call in an event the first processing unit determines that the synchronous mode should be in effect; and
set the AOF in an event the first processing unit determines that the asynchronous mode should be in effect.

8. The system architecture according to claim 1 , wherein the absolute addresses of the source data are non-consecutive in absolute address space and the absolute addresses of the target data are non-consecutive in absolute address space.

9. The system architecture according to claim 1 , wherein the absolute addresses of the source data are non-sequential and the absolute addresses of the target data are non-sequential.

10. A system architecture, comprising:
one or more drawers, each of which comprises one or more central processors (CPs) and one or more system controllers (SCs) and each of the one or more CPs comprising:
an accelerator configured to execute data compression or decompression faster than the first and second processing units responsive to a call issued by one of the first and second processing units,
the first processing unit being configured to set an asynchronous operation flag (AOF) to indicate that the second processing unit is to conduct a compression or decompression operation for the first processing unit,
the second processing unit being configured to respond to the AOF by building scatter gather lists and subsequently issuing the call and feeding the scatter gather lists to the accelerator to facilitate execution of the data compression or decompression by the accelerator,
wherein the scatter gather lists comprise absolute addresses and associated lengths for source data and target data of the data compression or decompression.

11. The system architecture according to claim 10 , wherein:
the one or more drawers are communitive with each other, and
the on-chip coherency unit of each of the one or more CPs of each of the one or more drawers is communicative with the one or more CPs and the one or more SCs of the corresponding drawer.

12. The system architecture according to claim 10 , wherein the first and second processing units of each of the one or more CPs of each of the one or more drawers are provided as ones of multiple processing units respectively communicative with a corresponding on-chip coherency unit via first interfaces.

13. The system architecture according to claim 10 , wherein each of the one or more CPs of each of the one or more drawers further comprises page buffer units (PBUs) respectively communicative with a corresponding on-chip coherency unit via second interfaces and a memory core.

14. The system architecture according to claim 10 , wherein the accelerator of each of the one or more CPs of each of the one or more drawers is communicative with a corresponding on-chip coherency unit via a second interface comprising a direct memory access (DMA)-like interface.

15. The system architecture according to claim 10 , wherein the compression or decompression operation comprises a DEFLATE operation.

16. The system architecture according to claim 10 , wherein the first processing unit is further configured to:
determine whether to operate in one of a synchronous mode or an asynchronous mode;
issue the call in an event the first processing unit determines that the synchronous mode should be in effect; and
set the ACF in an event the first processing unit determines that the asynchronous mode should be in effect.

17. The system architecture according to claim 10 , wherein the absolute addresses of the source data are non-consecutive and the absolute addresses of the target data are non-consecutive.

18. The system architecture according to claim 17 , wherein the absolute addresses of the source data are non-sequential in absolute address space and the absolute addresses of the target data are non-sequential in absolute address space.

19. A non-transitory computer program product, comprising:
a processing circuit; and
a memory unit having executable instructions stored thereon, which, when executed cause the processing circuit to execute a method of securely and efficiently executing data compression or decompression, the method comprising:
determining whether to operate in one of a synchronous mode or an asynchronous mode;
setting an asynchronous operation flag (AOF) in an event the determining indicates that the asynchronous mode should be in effect; and
building scatter gather lists to be fed to an accelerator to facilitate execution of the data compression or decompression by the accelerator in response to the setting of the AOF,
wherein:
the scatter gather lists comprise absolute addresses and associated lengths for source data and target data of the data compression or decompression, and
the absolute addresses of the source data are non-consecutive and the absolute addresses of the target data are non-consecutive.

20. A computer-implemented method of securely and efficiently executing data compression or decompression, the computer-implemented method comprising:
determining whether to operate in one of a synchronous mode or an asynchronous mode;
setting an asynchronous operation flag (AOF) in an event the determining indicates that the asynchronous mode should be in effect; and
building scatter gather lists to be fed to an accelerator to facilitate execution of the data compression or decompression by the accelerator in response to the setting of the AOF,
wherein:
the scatter gather lists comprise absolute addresses and associated l

Assignees

• IBM

Inventors

• Weishaupt Simon
• Klein Matthias
• Usenbinz Stefan
• Sofia Anthony Thomas

Classifications

• H03M7/30

  Compression (speech analysis-synthesis for redundancy reduction G10L19/00; for image communication H04N); Expansion; Suppression of unnecessary data, e.g. redundancy reduction · CPC title

• G06F13/4068 Primary

  Electrical coupling · CPC title

• G06F9/3004

  to perform operations on memory · CPC title

• G06F9/3877 Primary

  using a secondary processor, e.g. coprocessor (peripheral processor G06F13/12) · CPC title

• G06F13/20

  for access to input/output bus · CPC title