>Richard L. Hamilton wrote:
>>> C, the standard network stack runs on CPU0 (along
>>> with many other
>>> kernel items), though it might need some tuning for
>>> your particular app.
>>>
>> [...]
>>
>> I thought that at least since FireEngine, the network stack could
>> use multiple CPUs!
>>
Richard L. Hamilton wrote:
C, the standard network stack runs on CPU0 (along
with many other
kernel items), though it might need some tuning for
your particular app.
[...]
I thought that at least since FireEngine, the network stack could
use multiple CPUs!
Oooh! I just looked at the
> C, the standard network stack runs on CPU0 (along
> with many other
> kernel items), though it might need some tuning for
> your particular app.
[...]
I thought that at least since FireEngine, the network stack could
use multiple CPUs!
--
This message posted from opensolaris.org
__
Karel Gardas wrote:
Erik,
thank you once again for very valuable recommendation. I'm distributed systems
guy and plan to use the box for testing various messaging/rpc implementations
with CORBA on the start going thorough various SOAs and MOMs. Now, with CORBA,
MICO concretely (www.mico.org).
Karel Gardas wrote:
Erik,
to be honest I quite don't get what you write here. The reason is engineering.
4 socket server means that 1 cpu is connected to another 2 and forms kind of
ring. Nice simple picture is here:
http://ixbtlabs.com/articles2/cpu/rmma-numa2.html
Now, from this picture I
Erik,
thank you once again for very valuable recommendation. I'm distributed systems
guy and plan to use the box for testing various messaging/rpc implementations
with CORBA on the start going thorough various SOAs and MOMs. Now, with CORBA,
MICO concretely (www.mico.org). Imagine this is just l
Erik,
first of all for all those information provided. I do have some further
questions below.
> For a 4-socket 800-series Opteron, there are two CPU
> "groups" -
> CPU0/CPU1 in group 0, and CPU2/CPU3 in group 1. Each
> group has "local"
> memory, which it can access at about 50ns speeds.
>
Karel Gardas wrote:
Thanks Jan for the nice slides reference. The information is not there
unfortunately. Anyway, as I'm thinking about it more having 4,1,1,1 memory on
boards does not make a difference probably as long as no thread allocates more
than X MB of RAM causing OS to steal a RAM fro
Karel Gardas wrote:
NO NO NO, You never want to do this. Processes that
run on multiple CPUs need to be able to access the
same memory range. Say you had a process load on cpu0
and start running accessing a given memory range and
then it gets kicked off cpu0 due to a interrupt or
some other reaso
> NO NO NO, You never want to do this. Processes that
> run on multiple CPUs need to be able to access the
> same memory range. Say you had a process load on cpu0
> and start running accessing a given memory range and
> then it gets kicked off cpu0 due to a interrupt or
> some other reason and its
Thanks Jan for the nice slides reference. The information is not there
unfortunately. Anyway, as I'm thinking about it more having 4,1,1,1 memory on
boards does not make a difference probably as long as no thread allocates more
than X MB of RAM causing OS to steal a RAM from CPU with 4 GB. So fo
NO NO NO, You never want to do this. Processes that run on multiple CPUs need
to be able to access the same memory range. Say you had a process load on cpu0
and start running accessing a given memory range and then it gets kicked off
cpu0 due to a interrupt or some other reason and its next run
On Fri, Mar 19, 2010 at 06:20:50AM -0700, Karel Gardas wrote:
> Hello,
> for development/testing purposes I've purchased old HP ProLiant DL585 which
> comes with 4 CPU boards of Opterons 875 (dual-core). The problem is that this
> box comes with 4GB RAM which is attached to just one CPU, hence IM
Hello,
for development/testing purposes I've purchased old HP ProLiant DL585 which
comes with 4 CPU boards of Opterons 875 (dual-core). The problem is that this
box comes with 4GB RAM which is attached to just one CPU, hence IMHO NUMA is
quite degenerated to bad SMP here. As a solution I plan to
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