multi-core processor support in XP embedded?

  • Thread starter Thread starter iant
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I

iant

Anyone know where I can find out about XP embedded's support for dual core
and quad core processors?
For example, can I force components to start in specific cores, can I "ban"
the OS from running in certain cores?
 
iant said:
Anyone know where I can find out about XP embedded's support for dual
core and quad core processors?
Click to expand...

You just need to use the right HAL component for your hardware.

For example, can I force components to start in specific cores, can I
"ban" the OS from running in certain cores?
Click to expand...

If there is some way to do it on XP Pro, and I don't think there is,
then it will be possible on XPe.

There is no extra feature of XPe that I'm aware of to allow this either.
 
I can only speak first-hand about dual-core. Use GetProcessAffinityMask and
SetProcessAffinityMask for query and assignment of processes to specific
cores. I think that consistent with Window's annoying preference to be
non-deterministic (even XPe) the system may undermine the choices you make
if it decides there's a better way to balance the load but this has not been
a problem for me because my application consists of two instances of the
same compute intensive application so my processes stay on different cores
where I put them.

Query System\CurrentControlSet\Control\Session
Manager\Environment\NUMBER_OF_PROCESSORS if you need to determine whether
your system is multi-core. As the previous poster stated you need to use an
appropriate HAL but I found that tap.exe selected the right one.

Luke
 
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