Structured memory coprocessor

1. A computer system comprising:

an interconnect;

a conventional memory;

a processor coupled to the interconnect, wherein the processor requests a memory operation corresponding to the conventional memory over the interconnect for an executing process;

a structured memory;

and

a coprocessor coupled to the interconnect, wherein:

the coprocessor is associated with the structured memory;

the coprocessor is configured to:

intercept the requested memory operation;

determine an execution context for the executing process;

provide direct memory access (“DMA”) to the structured memory with isolation between the executing process and any other process, at least in part by exporting the executing context as a physical page in structured memory; and

translate the requested memory operation corresponding to the conventional memory to be applied to the structured memory.

2. A computer system as recited in claim 1 , further comprising a conventional memory coupled to the interconnect.

3. A computer system as recited in claim 1 , wherein the requested memory operation is addressed within a mapped region.

4. A computer system as recited in claim 1 , wherein the requested memory operation is addressed within a physical address region associated with the coprocessor.

5. A computer system as recited in claim 1 , wherein the requested memory operation is addressed within a physical address region associated with the coprocessor, specified by a developer.

6. A computer system as recited in claim 1 , wherein the requested memory operation is addressed within a physical address region associated with the coprocessor, specified by an operating system.

7. A computer system as recited in claim 1 , wherein the requested memory operation is addressed within a physical address region associated with the coprocessor, transparent to a developer.

8. A computer system as recited in claim 1 , wherein the interconnect is a coherent memory bus.

9. A computer system as recited in claim 1 , wherein the requested memory operation comprises an indirect read or an indirect write.

10. A computer system as recited in claim 1 , wherein the requested memory operation comprises an atomic update operation.

11. A computer system as recited in claim 1 , wherein the requested memory operation represents a key-value pair lookup.

12. A computer system as recited in claim 1 , wherein the structured memory is hierarchical.

13. A computer system as recited in claim 1 , wherein the structured memory is immutable.

14. A computer system as recited in claim 1 , wherein the structured memory is deduplicated.

15. A computer system as recited in claim 1 , wherein the structured memory is content addressable.

16. A computer system as recited in claim 1 , wherein the structured memory provides snapshot checkpointing.

17. A computer system as recited in claim 1 , wherein the structured memory represents a database.

18. A computer system as recited in claim 1 , wherein the structured memory represents a snapshot of state for lock-free execution.

19. A computer system as recited in claim 1 , wherein the structured memory represents an inverted index.

20. A computer system as recited in claim 1 , wherein the structured memory represents a sparse matrix.

21. A computer system as recited in claim 1 , wherein the coprocessor and structured memory represent a memcached server to the processor.

22. A computer system as recited in claim 1 , wherein the coprocessor and structured memory represent a search engine to the processor.

23. A computer system as recited in claim 1 , wherein the coprocessor is further configured to return to the processor a result of the translated memory operation applied to the structured memory.

24. A computer system as recited in claim 1 , wherein the memory operation is a writing operation and the coprocessor applies the writing operation to a transient line before committing the writing operation to the structured memory.

25. A computer system as recited in claim 1 , wherein the coprocessor includes a cache memory.

26. A method comprising:

intercepting a requested memory operation corresponding to a conventional memory for an executing process;

determining an execution context for the executing process;

providing for the executing process direct memory access (“DMA”) to the structured memory with isolation between the executing process and any other process, at least in part by exporting the executing context as a physical page in structured memory; and

translating the requested memory operation corresponding to the conventional memory to be applied to a structured memory.

27. A method as recited in claim 26 , wherein the requested memory operation is addressed within a mapped region.

28. A method as recited in claim 26 , wherein the requested memory operation comprises an atomic update operation.

29. A method as recited in claim 26 , wherein the requested memory operation represents a key-value pair lookup.

30. A method as recited in claim 26 , wherein the structured memory is hierarchical.

31. A method as recited in claim 26 , wherein the structured memory is immutable.

32. A method as recited in claim 26 , wherein the structured memory is deduplicated.

33. A method as recited in claim 26 , wherein the structured memory is content addressable.

34. A method as recited in claim 26 , wherein the structured memory provides snapshot checkpointing.

35. A method as recited in claim 26 , wherein the structured memory represents a database.

36. A method as recited in claim 26 , wherein the structured memory represents a snapshot of state for lock-free execution.

37. A method as recited in claim 26 , wherein the structured memory represents an inverted index.

38. A method as recited in claim 26 , wherein the structured memory represents a sparse matrix.

39. A method as recited in claim 26 , further comprising returning a result of the translated memory operation applied to the structured memory.

40. A method as recited in claim 26 , wherein the requested memory operation is a writing operation and further comprising applying the writing operation to a transient line before committing the writing operation to the structured memory.