l x wrote:
A. That depends. Check your .config file in /usr/src/linux_version/ directory and see if CONFIG_SMP=y is there. If its not there you'll have to recompile the kernel.My question are:
- do we have to recompile Linux 9 (lk2.4) to let it support dual CUPs?
- do we need to modify our code (both kernel drivers and user space application) to take advantage of dual processors?A. Normally you should not have any probems with the user space applications. However if you are using a lot of threads then check for any possible race conditions or deadlocks. And if there are none, you can improve your program efficiency by makeing use of the SMP API
- should we adjust any jumpers on the motherboard to use dual processors?A. Modern motherboards do not require such setting to be done in the hardware. However, it is best to check your motherboard manual and maybe even BIOS settings.
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