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A programmable arithmetic and logic unit (ALU) comprising a plurality of data selectors, the data selectors having corresponding data input lines; a plurality of ALU function input lines wherein the number of ALU function input lines is equal to the number of data input lines on each of the data sel

A programmable arithmetic and logic unit (ALU) comprising a plurality of data selectors, the data selectors having corresponding data input lines; a plurality of ALU function input lines wherein the number of ALU function input lines is equal to the number of data input lines on each of the data selectors, and each ALU function input line corresponds to one data input line on each of the data selectors; wherein each of the data input lines of each of the data selectors is connected to the corresponding data input lines of each of the other data selectors and to the corresponding ALU function input line.

대표청구항 ▼

A programmable arithmetic and logic unit (ALU) comprising a plurality of data selectors, the data selectors having corresponding data input lines; a plurality of ALU function input lines wherein the number of ALU function input lines is equal to the number of data input lines on each of the data sel

A programmable arithmetic and logic unit (ALU) comprising a plurality of data selectors, the data selectors having corresponding data input lines; a plurality of ALU function input lines wherein the number of ALU function input lines is equal to the number of data input lines on each of the data selectors, and each ALU function input line corresponds to one data input line on each of the data selectors; wherein each of the data input lines of each of the data selectors is connected to the corresponding data input lines of each of the other data selectors and to the corresponding ALU function input line. g is performed if an immediate write option is set. 29. The method of claim 28, wherein the immediate write option is a subsystem parameter that is set at a system level. 30. The method of claim 28, wherein the immediate write option is a bind option that is set at a plan level. 31. The method of claim 28, wherein the immediate write option is set causing the updated data to be written to the group buffer when the updated data is written to the first local buffer pool. 32. The method of claim 28, wherein the immediate write option is set causing the updated data to be written to the group buffer at or before a phase one commit of the first transaction and prior to spawning a second transaction. 33. The method of claim 32, wherein the second transaction is dependent on the data updated by the first transaction. 34. An apparatus for ensuring cache coherency in a database computing system having a plurality of computers coupled together wherein at least one of said plurality of computers executes application logic, the apparatus being part of a first computer among the plurality of computers and comprising: a local buffer pool; and a cache coherency unit coupled to