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Memory based cross compare for cross checked systems

  • US 20060123202A1
  • Filed: 12/03/2004
  • Published: 06/08/2006
  • Est. Priority Date: 12/03/2004
  • Status: Active Grant
First Claim
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1. A cross compare system for a multi-processor computer having at least a first and a second processor, comprising:

  • a first layer of buffers comprising a first storage area for storing information from the first processor and a second storage area for storing information from the second processor;

    a second layer of buffers comprising a third storage area for storing the information from said first storage area and the information from said second storage area, and a fourth storage area for storing the information from said first storage area and the information from said second storage area, the information from said first storage area and said second storage area being automatically transferred to said third storage area and said fourth storage area;

    wherein each of said first, second, third, and fourth storage areas comprise at least one buffer allocated only for its storage area, wherein said first processor reads the information from said third storage area and compares data stored in the third storage area from the first storage area with data stored in the third storage area from the second storage area to determine if the information stored in said third storage from the first storage area is substantially identical to the information stored in the third storage area from the second storage area; and

    and wherein said second processor reads the information from said fourth storage area and compares data stored in the fourth storage area from the first storage area with data stored in the fourth storage area from the second storage area to determine if the information stored in said third storage from the first storage area is substantially identical to the information stored in the third storage area from the second storage area.

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