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  • July 16, 2013 at 4:59 pm #53738
    Kevin Scantlan
    Participant

      Our system admin wants to increase memory dynamically on one of our LPARS and wants to know if it will have any impact.  Has anyone had any problems with DLPAR increasing memory?  And if no problem, do we have to bounce Cloverleaf processes for it to take advantage of the memory?

      We have Cloverleaf 5.8.5 and AIX 5.3   .

      Thanks.

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      • July 16, 2013 at 7:31 pm #78791
        Russ Ross
        Participant

          I have increased the size of a file system without shutting down.

          Having said that there is more to be said.

          I initially had our system admins carve out all the avialable memory on the SAN that I’m allowed to physically consume.

          Then I allocate from that physical pool to my file systems I create.

          As long as I have not consumed all my physically allocated space I can grow my file systems when the need might arise without shutting down.

          If my physical pool of disk space runs dry, then I have typically shutdown to increase that.

          I’ve done this over the years running on various IBM machines with AIX.

          Russ Ross
          RussRoss318@gmail.com

        • July 16, 2013 at 8:12 pm #78792
          Kevin Scantlan
          Participant

            I was making a reference to main memory and not disk space.  I probably wasn’t clear.

          • July 16, 2013 at 8:30 pm #78793
            Russ Ross
            Participant

              I have not increased RAM while running live since I have 8GBs which has been enough.

              I have changed the number of CPUs on the fly.

              Russ Ross
              RussRoss318@gmail.com

            • July 17, 2013 at 3:09 pm #78794
              Robert Milfajt
              Participant

                I’ve changed paging space on the fly and it wasn’t an issue.  I suspect you’ll be OK, unless the change requires a reboot.

                Robert Milfajt
                Northwestern Medicine
                Chicago, IL

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