Formerly About Advanced Micro Devices Message Board

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Politics : Formerly About Advanced Micro Devices

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To: Scumbria who wrote (96166)	3/1/2000 9:54:00 PM
From: Joe NYC	Read Replies (2) of 1576835

With these 128 bit instruction words, that contain 3 insturctions, isn't there going to be a problem with cache misses? Suppose you have these 3 instruction, each of these instructions needs some data that is sitting somewhere in memory. The compiler does not know where. Suppose 2 of them are in L1, and the third one is not even in L2 and has to be retrieved from main memory. What's going to happen with this instruction? Isn't it going to be stalled until the data is retrieved? I guess in IA-32 architecture, the CPU would be able to execute the first 2 instructions right away. Joe

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