How to solve the problem of 'insufficient virtual memory'

[Zhanghong_T_]

In CVF 6.6, when I allocate a large array, program can't execute and displays 'insufficient virtual memory'. I have setthe maximum virtual memory to 4096M from Control Panel. Can I do any other thing to avoid this?

Thanks,

Zhanghong Tang

[Steven_L_Intel1]

If you use a 64-bit PC and OS with a compiler that understands it, then you can typically do dynamic allocation of much larger arrays. Note that how large still depends on your system configuration - physical memory and available disk space for the paging file.

[Zhanghong_T_]

Oh thanks!

Is there any requirement for using 64-bit envirnment? A 64-bit PC+Windows2003? Does IVF8.0+VS.net2003 or CVF6.6 support for 64-bit envirnment?

Zhanghong Tang

[Steven_L_Intel1]

Intel Fortran supports Windows Server 2003 on Intel Itanium processors, this is a 64-bit environment. A future version will support Intel processors with Intel Extended Memory 64 Technology, which provides a 64-bit environment. MS hasn't released Windows for this yet, though. CVF is 32-bit only.

[Zhanghong_T_]

Thank you very much!

Zhanghong Tang

[TimP]

Here you could read about Visual Studio for 64-bit OS:

http://lab.msdn.microsoft.com/vs2005/(although most of the stuff there is about 32-bit).

I understand that full Intel Fortran support under 64-bit Visual Studio won't come until that releases. I don't think Steve was talking about a Visual Studio environment.

You should be able to take 32-bit binaries, built on a 32-bit OS installation, and run them on the 64-bit OS. You can't mix 32- and 64-bit .obj and .dll, but the 64-bit Windows includes 32-bit copies of the standard Windows .dll's and DirectX.

Right now, it's difficult to get a copy of the beta x64 Windows 2003, in the version which runs on the Intel platform. The Microsoft SDK is required as a base to develop software on that OS. There is only command line interface, and the ability to set up 32-bit Cygwin for partial support of software builds.

[Zhanghong_T_]

Oh, it seems it is difficult to build my code on 64-bit environment right now...

It's better for me to improve my algorithm and wait...

Thank all of you very much! Every time I can study a lot from you!

Sincerely,

Zhanghong Tang