[mpich-discuss] mpich 3 shared libraries install

[Balaji, Pavan]

John,

Did you use mpicc, etc., to build your program?  If yes, you shouldn't have to do the below steps.

  -- Pavan

> On Mar 1, 2015, at 9:47 AM, John Hancock <jhancock1975 at gmail.com> wrote:
> 
> I am making a suggestion about an addition to the installation guide. 
> 
> We may want to include some instructions on how to update one's system to use new libraries created as part of the compilation process.
> 
> The mpich 3.1.4 install guide suggests readers may want to run the configure script with a prefix option.
> 
> After installing mpich, I ran the pmandel example program. It terminated with the following error message, "error while loading shared libraries: libmpi.so.12: cannot open shared object file: No such file or directory."
> 
> We found it necessary to update all nodes to use the new libraries created during compilation.
> 
> We needed to add a file to the ld.so.conf.d directory with one line in it containing the path to mpich libraries.  The path to the mpich libraries is <<prefix>>/lib, where <<prefix>> is the prefix used in the configure phase of the installation process. We added this file to all nodes.
> 
> In addition, we needed to run the ldconfig command on all nodes to make the system fully aware of the new libraries.
> 
> After that, we were able to successfully run the pmandel program.
> 
> We may want to include some language in the install guide that informs the reader that it may be necessary to take similar steps to complete the installation process.
> 
> 
> -John
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--
Pavan Balaji  ✉️
http://www.mcs.anl.gov/~balaji

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