Combine multi Cores into SIngle Core Processing , on linux , Possible?

Programming for linux: Combine multi Cores into SIngle Core Processing , on linux , Possible? on newest questions tagged linux – Stack Overflow

I am thinking about an idea , where a lagacy application needing To run on full performance on Core i7 cpu. Is there any linux software / utility to combine all cores for that application, so it can process at some higher performance than using only 1 core?

the application is readpst and it only uses 1 Core for Processing outlook PST files.

Its ok if i can’t use all cores , it will be fine if can use like 3 cores.

Possible? or am i drunk?

I will rewrite it to use multiple cores if my C knowledge on multi forking is good.

source: http://stackoverflow.com/questions/5398946/combine-multi-cores-into-single-core-processing-on-linux-possible
Programming for linux: programming-for-linux