Re: Galaxy shared memory size

From: Mike Naime (mnaime_at_kc.rr.com)
Date: 07/21/04 

Date: Wed, 21 Jul 2004 01:13:24 GMT

Scott:

We stopped using Galaxy because we need a CD drive for
installation/upgrade/maintenance reasons. If you do not need the physical
devices that belong to the primary galaxy instance, then go for it.

I have not setup shared memory on my 1280's. All of my systems are (hard
implicit) soft partitions. What I found when partitioning a 1280 was that
the memory allocation was linked to the CPU's that are active in the
partitions. This is because the CPU "Owns" the memory installed into it's
CPU drawer. So, when you install the hardware, you have to really look at
how you might want to partition it, and move your memory dimms accordingly.

Mike Naime

Scott Greig <jsgreig@geminaq.com> wrote in message
news:XD9Lc.16493$Vw3.943614@news20.bellglobal.com...
> Hello all
>
> I'm about to configure my first Galaxy (ES47 Model 4).
> My thought was to have a single hard partition, with
> two soft partitions, using SMCI (Shared Memory Cluster
> Interconnect) as the cluster interconnect.
>
> There will only be 4 GB of memory. Both instances
> will boot from a common system disk - applications
> will also share disks (MSA1000).
>
> I'm considering a 64MB shared memory area, but this is
> only a guess - I have no guidelines (nor are there any in
> the Alpha Partitioning and Galaxy Guide).
>
> My question - is this enough? Should I consider 128MB?
> The application is NOT Galaxy aware - at least not yet!
>
> Cheers,
> Scott
>
>

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