Multithreading implementation -- assign thread to a specific processor?

In article <ub**************@TK2MSFTNGP11.phx.gbl>, Rob R. Ainscough wrote:

Is it possible to assign threads to a specific CPU ID? I'm attempting to
provide performance benefits for 2 and 4 CPU systems and would like to
assign specific threads to a processor, is this possible with .NET? Can't
seem to find anything that would not include such support? API (aka
unmanaged) solution?

Thanks, Rob.

Maybe System.Thread.ProcessorAffinity?

--
Tom Shelton [MVP]
OS Name: Microsoft Windows XP Professional
OS Version: 5.1.2600 Service Pack 2 Build 2600
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"Rob R. Ainscough" <ro*****@pacbell.net> schrieb:

Is it possible to assign threads to a specific CPU ID? I'm attempting to
provide performance benefits for 2 and 4 CPU systems and would like to
assign specific threads to a processor, is this possible with .NET?

(Based on a post by Thomas Scheidegger [MVP].)

'Process.ProcessorAffinity'
<URL:http://msdn.microsoft.com/library/en-us/cpref/html/frlrfSystemDiagnosticsProcessClassProcessorAffinit yTopic.asp>

'ProcessThread.ProcessorAffinity'
<URL:http://msdn.microsoft.com/library/en-us/cpref/html/frlrfSystemDiagnosticsProcessThreadClassProcessorA ffinityTopic.asp>

'ProcessThread.IdealProcessor'
<URL:http://msdn.microsoft.com/library/en-us/cpref/html/frlrfSystemDiagnosticsProcessThreadClassIdealProce ssorTopic.asp>

Determining the number of processors:

\\\
Imports System
..
..
..
.... = Environment.GetEnvironmentVariable("NUMBER_OF_PROC ESSORS")
///

..NET 2.0: 'Environment.ProcessorCount'.

--
M S Herfried K. Wagner
M V P <URL:http://dotnet.mvps.org/>
V B <URL:http://dotnet.mvps.org/dotnet/faqs/>

Thank you, exactly what I needed. .NET 2.0 -- perfect!

Rob.

"Herfried K. Wagner [MVP]" <hi***************@gmx.at> wrote in message
news:OM**************@TK2MSFTNGP11.phx.gbl...

"Rob R. Ainscough" <ro*****@pacbell.net> schrieb:

Is it possible to assign threads to a specific CPU ID? I'm attempting to
provide performance benefits for 2 and 4 CPU systems and would like to
assign specific threads to a processor, is this possible with .NET?

(Based on a post by Thomas Scheidegger [MVP].)

'Process.ProcessorAffinity'
<URL:http://msdn.microsoft.com/library/en-us/cpref/html/frlrfSystemDiagnosticsProcessClassProcessorAffinit yTopic.asp>

'ProcessThread.ProcessorAffinity'
<URL:http://msdn.microsoft.com/library/en-us/cpref/html/frlrfSystemDiagnosticsProcessThreadClassProcessorA ffinityTopic.asp>

'ProcessThread.IdealProcessor'
<URL:http://msdn.microsoft.com/library/en-us/cpref/html/frlrfSystemDiagnosticsProcessThreadClassIdealProce ssorTopic.asp>

Determining the number of processors:

\\\
Imports System
.
.
.
... = Environment.GetEnvironmentVariable("NUMBER_OF_PROC ESSORS")
///

.NET 2.0: 'Environment.ProcessorCount'.

--
M S Herfried K. Wagner
M V P <URL:http://dotnet.mvps.org/>
V B <URL:http://dotnet.mvps.org/dotnet/faqs/>