Dear Sir/Madam I heared that the classic part of maple 11 is more faster than Maple 12 so I decide to install maple 11 but: I cannot install maple 11 in my Notebook. When I Doubleclick on installation it start to extract. but when it reached 100% disappears! I also tested the second theory. in temp folder I double clicked the extracted setup application in windows directory. but no response too! What I need before installation? In addition, after that I installed Maple 12 seccessfully! without any problem! And Also I can Install maple 11 in my office's PC.

I changed my code to multi-threaded type. but my run time increased! and my CPU usage became 65-70%.I think I made a mistake in programming.
but i have a different question too. I read a paper that said: "when you use a matrix or array instead of single integer in maple, your run time will be badly increase, because your total CPU usage will decrease! i't a result of delay in writing matrix element in ram and as CPU has no command to process and is waiting for data from RAM"
i want to know if it is correct or not.