[mvapich-discuss] Building MVAPICH2 1.8a2/1.7 difficulties with PGI 12.2

[Jonathan Perkins]

On Fri, Feb 24, 2012 at 02:10:36PM -0600, Thomas Rothrock CTR SMDC SimCtr/GaN Corporation wrote:
> This is a problem in PGI 12.2-0 and affects more than just the MVAPICH2 1.8 trunk.  My first workaround was the following patch:
> 
>         --- mvapich2-a/src/pm/hydra/tools/topo/hwloc/hwloc/src/distances.c 2011-10-27 01:28:25.000000000 -0500
>         +++ mvapich2-b/src/pm/hydra/tools/topo/hwloc/hwloc/src/distances.c 2012-02-24 13:18:41.000000000 -0600
>         @@ -10,7 +10,13 @@
>          #include <private/private.h>
>          #include <private/debug.h>
> 
>         +#if (defined (_GNU_SOURCE)&&(__PGIC__==12)&&(__PGIC_MINOR__==2))
>         +#undef _GNU_SOURCE
>         +#include <float.h>
>         +#define _GNU_SOURCE
>         +#else
>          #include <float.h>
>         +#endif
> 
>          /* called during topology init */
>          void hwloc_topology_distances_init(struct hwloc_topology *topology)
> 
> 
> I received the following response from PGI earlier today:
> 
>         Unfortunately, the correction did not make it into the 12.2 release
> 
>         In the two files listed below,
> 
>         change
>         #if !defined(_GNU_SOURCE)
>         to
>         #if !defined(_GNU_SOURCE) || !defined(__cplusplus)
> 
>         /opt/pgi/linux86-64/12.2/include/float.h
>         /opt/pgi/linux86-64/12.2/include/limits.h
> 
> The latter is likely the best workaround, but relies on you being able to modify the PGI 12.2 installation on affected systems.

Tom, thanks for updating the list with your work around and PGI's
response.

Matt, can you verify whether this works for you or not?  Thanks in
advance.

-- 
Jonathan Perkins
http://www.cse.ohio-state.edu/~perkinjo