Data Processing In A Computing Environment

• US 20100191923A1
• Filed: 01/29/2009
• Published: 07/29/2010
• Est. Priority Date: 01/29/2009
• Status: Abandoned Application

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Carey, James E., Sanders, Philip J., Archer, Charles J.
• Application Number:
  US12/361,943
• Publication Number:
  US 20100191923A1
• Time in Patent Office: Days
• US Class Current: 711/154
• CPC Class Codes: G06F 12/1036 for multiple virtual address spaces, e.g. segmentation G06F12/1045 takes precedence

Abstract

Methods, apparatus, and products for data processing in a computing environment including allocating, by an operating system for an application, a virtual address spaces with each virtual address space mapped to a same physical address space and each virtual address space associated with an operation; receiving, from the application, an instruction to store a value in a specific virtual address, the specific virtual address contained within one of the allocated virtual address spaces; identifying a physical address associated with the specific virtual address; performing, with the value and the contents of the identified physical address, the operation associated with the virtual address space containing the specific virtual address; and storing a result of the operation in the identified physical address.

Claims

1. A method of data processing in a computing environment, the method comprising:

allocating, by an operating system for an application, a plurality of virtual address spaces, each virtual address space mapped to a same physical address space, each virtual address space associated with an operation;

receiving, from the application, an instruction to store a value in a specific virtual address, the specific virtual address contained within one of the allocated virtual address spaces;

identifying a physical address associated with the specific virtual address;

performing, with the value and the contents of the identified physical address, the operation associated with the virtual address space containing the specific virtual address; and

storing a result of the operation in the identified physical address.

2. The method of claim 1 wherein receiving the instruction, identifying the physical address, performing the operation, and storing the result of the operation in the identified physical address are carried out in computer hardware by a memory management unit.

3. The method of claim 1 wherein:

receiving, from an application, an instruction to store a value in a specific virtual address further comprises intercepting, by a memory access management module, the instruction to store the value in the specific virtual address; and

identifying the physical address, performing the operation, and storing the result of the operation in the identified physical address are carried out in software by the memory access management module.

4. The method of claim 1 wherein the computing environment further comprises:

a hybrid computing environment that includes a host computer having a host computer architecture, an accelerator having an accelerator architecture, the accelerator architecture optimized, with respect to the host computer architecture, for speed of execution of a particular class of computing functions, the host computer and the accelerator adapted to one another for data communications by a system level message passing module.

5. The method of claim 4 wherein:

receiving, from an application, an instruction to store a value in a specific virtual address further comprises receiving, by the system level message passing module, the instruction from a host application program executing on the host computer; and

the method further comprises instructing, by the system level message passing module, the accelerator to perform the operation and store the result in the identified physical address.

6. The method of claim 4 wherein the host computer and the accelerator adapted to one another for data communications by two or more data communications fabrics of at least two different fabric types.

7. An apparatus for data processing in a computing environment, the apparatus comprising a computer processor, a computer memory operatively coupled to the computer processor, the computer memory having disposed within it computer program instructions capable of:

allocating, by an operating system for an application, a plurality of virtual address spaces, each virtual address space mapped to a same physical address space, each virtual address space associated with an operation;

receiving, from the application, an instruction to store a value in a specific virtual address, the specific virtual address contained within one of the allocated virtual address spaces;

identifying a physical address associated with the specific virtual address;

performing, with the value and the contents of the identified physical address, the operation associated with the virtual address space containing the specific virtual address; and

storing a result of the operation in the identified physical address.

8. The apparatus of claim 7 wherein receiving the instruction, identifying the physical address, performing the operation, and storing the result of the operation in the identified physical address are carried out in computer hardware by a memory management unit.

9. The apparatus of claim 7 wherein:

receiving, from an application, an instruction to store a value in a specific virtual address further comprises intercepting, by a memory access management module, the instruction to store the value in the specific virtual address; and

identifying the physical address, performing the operation, and storing the result of the operation in the identified physical address are carried out in software by the memory access management module.

10. The apparatus of claim 7 wherein the computing environment further comprises:

a hybrid computing environment that includes a host computer having a host computer architecture, an accelerator having an accelerator architecture, the accelerator architecture optimized, with respect to the host computer architecture, for speed of execution of a particular class of computing functions, the host computer and the accelerator adapted to one another for data communications by a system level message passing module.

11. The apparatus of claim 10 wherein:

receiving, from an application, an instruction to store a value in a specific virtual address further comprises receiving, by the system level message passing module, the instruction from a host application program executing on the host computer; and

the apparatus further comprises computer program instructions capable of instructing, by the system level message passing module, the accelerator to perform the operation and store the result in the identified physical address.

12. The apparatus of claim 10 wherein the host computer and the accelerator adapted to one another for data communications by two or more data communications fabrics of at least two different fabric types.

13. A computer program product for data processing in a computing environment, the computer program product disposed in a computer readable, signal bearing medium, the computer program product comprising computer program instructions capable of:

allocating, by an operating system for an application, a plurality of virtual address spaces, each virtual address space mapped to a same physical address space, each virtual address space associated with an operation;

receiving, from the application, an instruction to store a value in a specific virtual address, the specific virtual address contained within one of the allocated virtual address spaces;

identifying a physical address associated with the specific virtual address;

performing, with the value and the contents of the identified physical address, the operation associated with the virtual address space containing the specific virtual address; and

storing a result of the operation in the identified physical address.

14. The computer program product of claim 13 wherein receiving the instruction, identifying the physical address, performing the operation, and storing the result of the operation in the identified physical address are carried out in computer hardware by a memory management unit.

15. The computer program product of claim 13 wherein:

receiving, from an application, an instruction to store a value in a specific virtual address further comprises intercepting, by a memory access management module, the instruction to store the value in the specific virtual address; and

identifying the physical address, performing the operation, and storing the result of the operation in the identified physical address are carried out in software by the memory access management module.

16. The computer program product of claim 13 wherein the computing environment further comprises:

a hybrid computing environment that includes a host computer having a host computer architecture, an accelerator having an accelerator architecture, the accelerator architecture optimized, with respect to the host computer architecture, for speed of execution of a particular class of computing functions, the host computer and the accelerator adapted to one another for data communications by a system level message passing module.

17. The computer program product of claim 16 wherein:

receiving, from an application, an instruction to store a value in a specific virtual address further comprises receiving, by the system level message passing module, the instruction from a host application program executing on the host computer; and

the computer program product further comprises computer program instructions capable of instructing, by the system level message passing module, the accelerator to perform the operation and store the result in the identified physical address.

18. The computer program product of claim 16 wherein the host computer and the accelerator adapted to one another for data communications by two or more data communications fabrics of at least two different fabric types.

19. The computer program product of claim 13 wherein the signal bearing medium comprises a recordable medium.

20. The computer program product of claim 13 wherein the signal bearing medium comprises a transmission medium.