UMAT for Abaqus on 64 bit Windows

[aamirmub]

Hi,

I have a machine with 64bit Windows XP and Abaqus 6.9 64bit installed. I wrote a umat on another machine, which has 32bit Windows XP and Abaqus. Can I compile a shared .dll library of my umat on 32bit machine and run it on 64bit machine. The 64bit machine doesn't have fortran compiler. If this is not possible, what software do I require for 64bit machine to run umat e.g intel fortran and visual studio.

Thanks for your help.

Regards

Aamir

[Jorgen]

I have no tried that, but it can probably be done.

First, however, I do not believe that a 32-bit UMAT in dll-format would on a computer with a 64-bit OS.

The approach I would try to accomplish what you are trying to do is as follows:

1) The Intel Fortran compiler typically installs both a 32-bit and 64-bit compiler, even if the host computer is only running 32-bit Windows.

2) Compiler your UMAT into object format using the 64-bit compiler

3) Link the dll file using a 64-bit linker and the appropriate Abaqus 64-bit libraries (which you can copy from your 64-bit computer)

4) Copy and use the 64-bit dll file on your 64-bit computer.

Note 1: It is not a trivial task to accomplish these tasks. It will take some experties to figure out the compile and linking commands.

Note 2: I basically use this approach to compile by 32-bit and 64-bit dll-libraries, but I have not tried to compile the code using a cross-platform compiler.

-Jorgen

[jimstian]

Hi and thank you for an excellent Forum.

I am having problems getting Abaqus 6.9-2 to work with Intel Fortran Compiler 10.1.011 and MS Visual Studio 2005 in Windows 7. The programs are installed in the correct order, and I have changed or added the necessary environmental variables in windows. I also added the Intel Fortran batch file, ifortvars.bat, to the Abaqus cmd window. This approach worked nicely in Windows XP, but with Windows 7 I get a LNK2001 error and a LNK2019 error when I am trying to run a UMAT. I can't seem to understand what is going wrong. Any ideas?

Jim

[Jorgen]

I am not sure what you would get those errors.
One thought, are you sure that MS VS 2005 works in Win 7?

-Jorgen

[jimstian]

Yes, MS VS 2005 works fine in Windows 7. My problem was finally solved by installing the x64 compiler tools in MS VS 2005 (which is not included in the default installation).

Jim

[YTian]

Hi,

I have a machine with 64bit Windows XP and Abaqus 6.9 64bit installed. I wrote a umat on another machine, which has 32bit Windows XP and Abaqus. Can I compile a shared .dll library of my umat on 32bit machine and run it on 64bit machine. The 64bit machine doesn't have fortran compiler. If this is not possible, what software do I require for 64bit machine to run umat e.g intel fortran and visual studio.

Thanks for your help.

Regards

Aamir

Hi, Aamir
I tried to compile my user subroutine into DLL but i failed getting it running couple of years ago. At last I used oject file rather than DLL.
I am curious about your question and very eager to know the possiblity of compliling a user subroutine into DLL.
regards
Tian