1. An apparatus comprising:
at least one hardware processor core;
a sectored dynamic random access memory (DRAM) cache coupled to the at least one hardware processor core, the sectored DRAM cache including a plurality of micro-sectors assignable to threads to be executed by the at least one hardware processor core; and
storage for a plurality of micro-sector tags to be used in addressing a micro-sector.
2. The apparatus of claim 1, further comprising:
storage for a not-recently-used information associated with a thread to be executed by the at least one hardware processor core.
3. The apparatus of claim 1, wherein the DRAM cache is an L4 cache.
4. The apparatus of claim 1, wherein the DRAM cache is shared with a graphics core.
5. The apparatus of claim 1, wherein a physical sector of a DRAM cache page to include a plurality of micro-sectors.
6. The apparatus of claim 1, wherein a micro-sector cache block to include data, valid, and dirty information.
7. The apparatus of claim 1, further comprising:
a memory controller in the at least one processor core to access the DRAM cache.
8. The apparatus of claim 1, further comprising:
a memory controller external to the at least one processor core to access the DRAM cache and accessible by all of the processor cores.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A database system including:
a source cluster for providing a cluster shared spool file for consumption by a target module belonging to a target cluster;
an interconnect for receiving the spool file and exporting the spool file for consumption by the target module.
2. A system according to claim 1 wherein each cluster interacts with an associated storage device.
3. A system according to claim 2 wherein the spool file is written to the associated storage device of the target cluster.
4. A system according to claim 3 wherein the spool file is written to a common disk area of the associated storage device.
5. A system according to claim 3 wherein the target cluster includes a plurality of access modules and the spool file is accessible by any of these modules.
6. A system according to claim 4 wherein the spool file is accessed only by the target module.
7. A system according to claim 6 wherein the plurality of modules includes a plurality of target modules.
8. A system according to claim 7 wherein each cluster is defined by one or more nodes for carrying the modules, and node sharing of spools is enabled such that when a given module carried by a given node reads the spool file, one or more further modules carried by that given node share a common memory copy of the spool file.
9. A system according to claim 1 wherein the spool file is a redistribution spool file for consumption by the target module such that the row is effectively redistributed to the target module.
10. A system according to claim 9 wherein only the target module consumes the redistribution spool file.
11. A system according to claim 1 wherein the spool file is a duplication spool file for consumption by the target module such that the row is effectively duplicated to the target module.
12. A system according to claim 11 wherein there is a plurality of target modules and the cluster shared spool file is available for consumption by each of the target modules such that the row is duplicated to each of the target modules.
13. A system according to claim 1 wherein each cluster is a clique.
14. A system according to claim 1 including a plurality of source clusters, the source clusters being synchronized such that they each provide their respective spool file substantially simultaneously.
15. A system according to claim 1 wherein a shipping module reads the spool file from a source storage device andor writes the spool file to the interconnect and a recipient module reads the spool file from the interconnect and writes the spool file to a target storage device.
16. A system according to claim 15 wherein the shipping module is a source module.
17. A system according to claim 15 wherein the recipient module is the target module.
18. A method for managing shared cluster-shared spool files in a multi-cluster database system, the method including the steps of:
receiving the spool file from a source cluster; and
providing the spool file for consumption by a target access module of a target cluster.