Re: Total vs per-cpu memory
On Thu, 2008-01-31 at 09:12 -0800, Francesco Pietra wrote:
> Hi Len:
> I agree. However, these are no standardized codes. Actually, it is a code in
> development that is faced with extreme situations that could not have been in
> the mind of the developer. Docking a large molecule onto a protein without bias
> is a challenging task, that the program accomplices nicely up to a certain size
> of the ligand. I am pushing the program beyond the limits for which it was
> devised. That "pushing" in order to tell where the program needs to be revised.
> The developer is not putting together known routines, he is inventing the way
> to come out.
>
> That said, you are certainly able to answer my question about how RAM is used
> by a single cpu in my Tyan (all 8 sets of memory occupied) when the other cpus
> are dormant. If not, the only way I can invent is to look at top -i when the
> ligand is large but not so large to induce segmentation fault.
Every memory slot on an Opteron system is "owned" by a particular CPU
socket. If there is no CPU there, then the memory won't work. If there
is a CPU there, but a different CPU requires access to the memory, the
one CPU can "ask" another CPU for access to a block of memory
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