How can I solve a speed matlab execution in a multicore PC?

Hi there,

I currently bought a PC with an i7-6cores(windows8) to run matlab (simulations) but I found it runs my application very much slower than my old laptop with Intel Core2. I understand that one way to speed the execution would be using special coding (parfor, ...) but I think there is another problem that I can not identify.

Is there a similar problem as the one I just described? Is there a possible fix for that?

Thank you very for any help you can provide me.

Juan

[Jan]

You did not provide any useful detail of your program and the computers. It could be the virus scanner, or a cache line collision, or the hard disk, or the Matlab version, ...

[Juan Carlos Aviles]

Jan, thank you very much for your prompt comment. Actually, I run the same matlab application (RF propagation calculations) using matlab version 13a (64bit) in the PC(i7-3930K, 3.2GHz) and a Toshiba Satellite laptop equipped with an i7 4700MQ-CPU 2.4GHz. Additionally I run the application in a Toshiba and in addition I run the application in my old Toshiba Satellite A204-s4797) using Matlab 11b.

The result I get is that the old laptop takes 40 minutos, the newer laptop 2h 15 minutes and the PC around 5 hours. I noticed that the number of processes, threads and handles in the newer laptop doubles the corresponding values in the PC. I hope this data provides useful info.

Thanks again for any help,

Juan

[Juan Carlos Aviles]

Jan, I am sorry. I made a mistake repeating part of the info in the third and fourth line

Juan

[Bashar Issa]

Hi. The memory in each computer is obviously important factor. The hard disk access speed if very important, so is MATLAB installed in the same disk where the code is saved or separate hard disk? Finally, there is always an overhead time when using multiple cores which will lengthen time if code is not really a complicated one (e.g. serial tasks rather than parallel). Regards

Answer 1

[Marko Gulin]

In my case, hard disk drive was a bottleneck. After I've installed SSD, MATLAB, as well as all other programs, run much much faster!!! :)

[Juan Carlos Aviles]

Marko,

Thank you very much for your input, I will check it.

Best regards,

Juan