Boots – shoes – and leggings
Patent
1996-12-16
1999-03-30
Kim, Kenneth S.
Boots, shoes, and leggings
395557, 39520046, 364134, 711164, G06F 15167
Patent
active
058899472
ABSTRACT:
A multiprocessor computer system comprises a plurality of processors, wherein each processor includes an execution unit, a program counter, a result buffer containing a plurality of entries, each entry being allocated to hold an output value of an instruction executed by the execution unit, and an operation counter containing an operation count that is incremented at least when an instruction storing an output value to the result buffer is executed by the execution unit. A particular entry allocated in the result buffer for a given output value is selected as a function of the operation count at the time the instruction generating that given output value is executed. Each processor further includes a decoder that extracts a processor identifier from an instruction to be executed that identifies one of the plurality of processors, wherein one or more input values of the instruction are retrieved from the result buffer of the identified processor. Each decoder also extracts a displacement value from the instruction to be executed that provides a relative difference between the current operation count of the executing processor and an expected operation count of the identified processor when the desired input values are stored in the result buffer of the identified processor. The decoder generates an access key as a function of the displacement value and the current operation count of the processor executing the instruction and retrieves an input value from the result buffer of the identified processor at the entry indexed by the access key.
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Dillon Andrew J.
International Business Machines - Corporation
Kim Kenneth S.
Russell Brian F.
Salys Casimer K.
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