Method for detecting thread switch events
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United States of America Patent
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-
Aug 7, 2001
Grant Date -
N/A
app pub date -
Dec 31, 1997
filing date -
Dec 31, 1997
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A method for detecting thread switch conditions provides first and second scoreboard bits for each register in a register file. The first scoreboard bit associated with a register is set when a load is generated to return data to the register. The second scoreboard bit is set if the load misses in a selected processor cache. Register read instructions are monitored, and a thread switch condition is indicated when a register read instruction to the register is detected while its first and second scoreboard bits are set.
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