>>Although program is still working correctly, but the size(built by Intel C++Compiler) is increased too much. Can anyone
>>give me some explanations? Is this normal or abnormal?

I wouldn't make any speculative statements or suggestions before looking into tachyon_studio sample.

>>I'm using Intel Parallel 2011 Update 1 and Visual Studio 2008.

I'll take a look at the sample project some time later using Intel Parallel Studio 2011 Update 3 and Visual Studio 2005 Professional Edition.

I am able to reproduce Tuan's findings. I will investigate this further and keep you all posted on the same. Thanks Tuan for reporting this observation.

>>...I am able to reproduce Tuan's findings. I will investigate...

Thank you, Anoop. In that case I will simply move on something else. Please keep everybody informed.

You can use dumpbin tool for PE file inspection.Look for the various sections size parameter.

Hi Tuan,

               Could you please check if "Multi-File optimization (/Qipo)" has been enabled? With /Qipo enabled , the size would increase because there would be an mock object file getting created which would be very bulky. So disable the "/Qipo" and see if the size reduces.

Regards,

Sukruth H V

Hi Tuan,

               Forgot to mention, if you see that disabling "/Qipo" doesnt decrease the size, Please do let me know the Options that's been set at your side, You can simply copy paste the whole command line options used (Project-properties-->C/C++ --> Command Line).

Regards,

Sukruth H V

Hi Tuan,

               Would it be possible for you to send a testcase for the 2nd case, where with "/Qipo" the size of the build folder gets *DECREASED*? So that i can have a look at it. Because when i built the tachyon example with and without "/Qipo" option, i could see the difference in size of the build folder( Size increased with the "/Qipo" ). But i didnt see the vice versa case!!

Regards,

Sukruth H V

>>...Would it be possible for you to send a testcase for the 2nd case...

Sukruth, Please take a look at the 1st post in the thread. It says:

>>...C:\Program Files (x86)\Intel\Parallel Studio 2011\Samples\en_US...
>>
>>File size of tachyon.common project...

You should have it on your computer.

Best regards,
Sergey

Hi Sergey,

                  Sure i have it. But i am not able to reproduce the 2nd case that Tuan is experiencing, where the build folder size decreases with "/Qipo" option been enabled.

Regards,

Sukruth H V

Hi Sukruth,

>>...But i am not able to reproduce the 2nd case that Tuan is experiencing...

Do you use Intel Parallel Studio 2011 Update 1 or a different version/update? If you use a different version/update it could be a possible reason why you can't reproduce the 2nd case.

Best regards,
Sergey

Hi Tuan

Like Sukruth rightly pointed out, /Qipo is the reason for increase in binary size. /Qipo does an agressive inlining and so the increase in binary size is expected. But in this case the increase in binary size is way higher and I am trying to nail down what exactly is leading to this extra blot up. You can try the /Qip option instead and you will see a smaller binary than the one generated my default Visual Studio compiler. Also the performance numbers are not compromised by switching from /Qipo to /Qip.

It is interesting that you did encounter a case where using /Qipo decreased the binary size. Please share the testcase when you reproduce that. In the meantime, I will keep you posted on the findngs and proceedings on this issue.

Thanks and Regards
Anoop

Hi,

As you can see Sukruth-v (Intel) and Anoop Madhusoodhanan Prabha (Intel) are taking care of the problem and I hope that they provide you with updates.

Thanks.

PS: As soon as there is a news regarding some problem Intel software engineers provide update. Please be patient.