1 Reply Latest reply on Sep 20, 2012 12:13 AM by marshalll

    very poor ecc efficiency on w9000

    jinhou

      Hello all,

      W9000 is the first AMD platform support ECC feature, however, I found that the ECC efficiency is very poor for memory intensive workloads. The overhead is large than 100% for most  memory intensive workloads. Does anyone know the reasons?

       

       

      Thanks

        • Re: very poor ecc efficiency on w9000
          marshalll

          Correct single bit memory errors in hardware.

          ECC memory maintains a memory system virtually

          free from single-bit errors: the data read from each

          word is always the same as the data that had been

          written to it, even if a single bit actually stored, or

          more in some cases, has been flipped to the wrong

          state. Some non-ECC memory with parity support

          allows errors to be detected, but not corrected;

          otherwise errors that may occur are

          not detected.