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Enabling NUMA in Windows Server 2003 x64

 
 
=?Utf-8?B?RGF2aWQgS2FudGVy?=
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      07-15-2006
Hi,

I am relatively new to using Windows Server, and I'm having a little trouble
getting NUMA optimizations to work. I've read a bit about Window's SRAT, but
I don't know is needed to enable it. Right now, I have a 4 socket system,
with 8 processors, and the performance is horrible because the system is not
using any NUMA optimizations.

Thanks in advance for any help!

David
 
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mabra
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      07-16-2006
Hi !

Although I am not NUMA specialist, I am using a Tyan MoBo and the SRAT
settings are in the BIOS and disabled by default [possibly, because I
use a dual-core and not dual processors].

Just a hint.

Best regards,
Manfred

David Kanter wrote:
> Hi,
>
> I am relatively new to using Windows Server, and I'm having a little trouble
> getting NUMA optimizations to work. I've read a bit about Window's SRAT, but
> I don't know is needed to enable it. Right now, I have a 4 socket system,
> with 8 processors, and the performance is horrible because the system is not
> using any NUMA optimizations.
>
> Thanks in advance for any help!
>
> David

 
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=?Utf-8?B?RGF2aWQgS2FudGVy?=
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      07-16-2006


"mabra" wrote:

> Hi !
>
> Although I am not NUMA specialist, I am using a Tyan MoBo and the SRAT
> settings are in the BIOS and disabled by default [possibly, because I
> use a dual-core and not dual processors].
>
> Just a hint.
>
> Best regards,
> Manfred


You only need the SRAT when you have multiple processors. I have a 4 socket
(8 processor) system. I have memory interleave disabled (i.e. the system
should use the SRAT), however, the performance is horrible and I'm almost
certain its due to not using the SRAT.

Does anyone know how to:
1. Check if the SRAT/NUMA optimizations are being used?
2. Turn them on?

My understanding is that it should be automatic if you are using Windows
Server 2003 EE x64, but I'm not seeing that happen.

Thanks,

David
 
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Peter Lawton
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      07-16-2006
If you run SiSoft Sandra benchmark software on the machine it'll display the
NUMA information on the "Hardware" / "Mainboard" Information tab, or if you
run the "Cache & Memory" benchmark.

Peter Lawton

"David Kanter" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
>
>
> "mabra" wrote:
>
>> Hi !
>>
>> Although I am not NUMA specialist, I am using a Tyan MoBo and the SRAT
>> settings are in the BIOS and disabled by default [possibly, because I
>> use a dual-core and not dual processors].
>>
>> Just a hint.
>>
>> Best regards,
>> Manfred

>
> You only need the SRAT when you have multiple processors. I have a 4
> socket
> (8 processor) system. I have memory interleave disabled (i.e. the system
> should use the SRAT), however, the performance is horrible and I'm almost
> certain its due to not using the SRAT.
>
> Does anyone know how to:
> 1. Check if the SRAT/NUMA optimizations are being used?
> 2. Turn them on?
>
> My understanding is that it should be automatic if you are using Windows
> Server 2003 EE x64, but I'm not seeing that happen.
>
> Thanks,
>
> David



 
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=?Utf-8?B?RGF2aWQgS2FudGVy?=
Guest
Posts: n/a
 
      07-16-2006
Peter,

Thanks for the response, I appreciate it.

> If you run SiSoft Sandra benchmark software on the machine it'll display the
> NUMA information on the "Hardware" / "Mainboard" Information tab, or if you
> run the "Cache & Memory" benchmark.


Is there any way around this? Could I poke around the system configuration
info to find the same stuff (obviously I can't get the same data from a
memory benchmark...).

The reason I ask is that I would *strongly* prefer not to install anything
on the machine other than what is currently on it.

For instance, wouldn't the task manager look slightly different for a NUMA
aware system?

DK

> Peter Lawton
>
> "David Kanter" <(E-Mail Removed)> wrote in message
> news:(E-Mail Removed)...
> >
> >
> > "mabra" wrote:
> >
> >> Hi !
> >>
> >> Although I am not NUMA specialist, I am using a Tyan MoBo and the SRAT
> >> settings are in the BIOS and disabled by default [possibly, because I
> >> use a dual-core and not dual processors].
> >>
> >> Just a hint.
> >>
> >> Best regards,
> >> Manfred

> >
> > You only need the SRAT when you have multiple processors. I have a 4
> > socket
> > (8 processor) system. I have memory interleave disabled (i.e. the system
> > should use the SRAT), however, the performance is horrible and I'm almost
> > certain its due to not using the SRAT.
> >
> > Does anyone know how to:
> > 1. Check if the SRAT/NUMA optimizations are being used?
> > 2. Turn them on?
> >
> > My understanding is that it should be automatic if you are using Windows
> > Server 2003 EE x64, but I'm not seeing that happen.
> >
> > Thanks,
> >
> > David

>
>
>

 
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Peter Lawton
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Posts: n/a
 
      07-16-2006
I don't know how Sandra detects the NUMA parameters I'm afraid, although it
doesn't have to actually run the benchmark to detect them, they're on the
Information tab before you even run the benchmark, so I assume it must read
them from the BIOS and system somehow.

I haven't noticed any difference in Task Manger on our Opteron HP DL585
servers, that definately are using NUMA, from our older Intel HP DL580 Intel
based servers that aren't NUMA.

Peter Lawton

"David Kanter" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> Peter,
>
> Thanks for the response, I appreciate it.
>
>> If you run SiSoft Sandra benchmark software on the machine it'll display
>> the
>> NUMA information on the "Hardware" / "Mainboard" Information tab, or if
>> you
>> run the "Cache & Memory" benchmark.

>
> Is there any way around this? Could I poke around the system
> configuration
> info to find the same stuff (obviously I can't get the same data from a
> memory benchmark...).
>
> The reason I ask is that I would *strongly* prefer not to install anything
> on the machine other than what is currently on it.
>
> For instance, wouldn't the task manager look slightly different for a NUMA
> aware system?
>
> DK
>
>> Peter Lawton
>>
>> "David Kanter" <(E-Mail Removed)> wrote in message
>> news:(E-Mail Removed)...
>> >
>> >
>> > "mabra" wrote:
>> >
>> >> Hi !
>> >>
>> >> Although I am not NUMA specialist, I am using a Tyan MoBo and the SRAT
>> >> settings are in the BIOS and disabled by default [possibly, because I
>> >> use a dual-core and not dual processors].
>> >>
>> >> Just a hint.
>> >>
>> >> Best regards,
>> >> Manfred
>> >
>> > You only need the SRAT when you have multiple processors. I have a 4
>> > socket
>> > (8 processor) system. I have memory interleave disabled (i.e. the
>> > system
>> > should use the SRAT), however, the performance is horrible and I'm
>> > almost
>> > certain its due to not using the SRAT.
>> >
>> > Does anyone know how to:
>> > 1. Check if the SRAT/NUMA optimizations are being used?
>> > 2. Turn them on?
>> >
>> > My understanding is that it should be automatic if you are using
>> > Windows
>> > Server 2003 EE x64, but I'm not seeing that happen.
>> >
>> > Thanks,
>> >
>> > David

>>
>>
>>



 
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