sure, no problem. but I guess svn maybe easier. since there is some images file to run it. Can you use svn to clone it? it is: https://subversion.xray.aps.anl.gov/detpool/SUFENGNIU/MPI_Compression just make, you need two terminals to run it. one terminal type: ./run.perl main the second terminal type: ./udp_client 55Fe_run5.tif which is that the first terminal send the data, the second terminal receive it and process it. Thank you so much. Due to my limited knowledge I didn't find out where is the problem. once again, thanks a lot! Sufeng On Tue, Jul 23, 2013 at 6:00 PM, Pavan Balaji <[email protected]> wrote:

Can you send us a simple program that gives this error?

-- Pavan

On 07/23/2013 05:55 PM, Sufeng Niu wrote:

...

Hello,

I used MPI_Win_free, and it returns error code: 45, Invalid MPI_Win. I checked all my code, but I still cannot find out where is the problem. I was wondering any one can give a suggestion?

I defined win as MPI_Win win;

in RMA, I create a sub communicator: MPI_FOR_WORLD MPI_Win_create(image_buff, 2*image_info->image_size***sizeof(uint16), sizeof(uint16), MPI_INFO_NULL, MPI_FOR_WORLD, win);

In other MPI_FOR_WORLD process: MPI_Win_create(MPI_BOTTOM, 0, sizeof(uint16), MPI_INFO_NULL, MPI_FOR_WORLD, win);

I use MPI_Get, just as normal thing. no mem violation.

free it as MPI_Win_free(&win);

I still cannot figure out why it keeps saying MPI_Win_free failed. Thank you very much for any suggestions.

-- Best Regards, Sufeng Niu ECASP lab, ECE department, Illinois Institute of Technology Tel: 312-731-7219 <tel:312-731-7219>

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-- Pavan Balaji http://www.mcs.anl.gov/~balaji

-- Best Regards, Sufeng Niu ECASP lab, ECE department, Illinois Institute of Technology Tel: 312-731-7219