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Date:	Fri, 28 Feb 2014 16:26:59 +0800 (CST)
From:	Christian Wagner <wagner AT mail DOT sysu DOT edu DOT cn>
To:	cygwin AT cygwin DOT com
Message-ID:	<741432400.5622627.1393576019270.JavaMail.root@mail.sysu.edu.cn>
Subject:	1.7.4-1 upgrade of OpenMPI packages caused MPI to stop on Windows 7
MIME-Version:	1.0

I am using an up to date Windows 7 system with cygwin 64 bit installed. I've installed via the cygwin interface all current cygwin packages except mail and audio. cygwin\bin is added to the Windows environment. OpenMPI is added to PATH (cygwin64\bin) and LD_LIBRARY_PATH (cygwin64\lib).

Problem:
After installing the cygwin x86_64 OpenMPI updates i.e. version 1.7.4-1, both mpirun and mpiexec were broke (after typing the commands and waiting a couple of seconds no errors or prompts appeared, it just passed on to the command prompt. Before the upgrade and after the repair both commands give feedback citing that there is nothing to be executed). A Gromacs installation using OpenMPI also was broke.

Solution: revert to cygwin x86_64 OpnMPI version 1.7.1-2. All of the above problems were solved.

I am not a programmer, so I could unfortunately not narrow down the cause of this behavior.

Best regards,
Chris Wagner

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