mvapich-1.0.0 : protocol version 8 not known

[Frank Mietke]

Hi,

On Fri, Mar 14, 2008 at 10:43:10AM -0400, Pete Wyckoff wrote:
> louwrens.boonstra at clustervision.com wrote on Fri, 14 Mar 2008 14:03 +0100:
> > Hi, I'm getting this error when running mpiexec on mvapich-1.0.0:
> >
> > mpiexec: Warning: read_ib_one: protocol version 8 not known, but might 
> > still work.
> > mpiexec: read_ib_one: version 6 startup.
> > mpiexec: service_ib_startup: rank 0 in, 7 + 0 left.
> > mpiexec: Error: read_ib_one: mixed version executables (6 and 8), no hope.
> >
> > From earlier messages I understood this has to do with the mvapich version. 
> > Any changed this will be fixed soon for 1.0.0 or should I downgrade to 
> > mvapich-0.9.8 / 0.9.9 ?
> 
> Even though Frank Mietke did the work of figuring out how the new
> version 6 worked in mvapich 1.0 beta, it appears they have changed
> to version 8 for the release.  Frustrating.  Maybe Frank will also
> be interested in looking at this issue.  Help is welcome.

I'm looking at this issue next week and try to provide a patch.
I thought that I checked the release, strange. 

Currently, I'm also integrating the TotalView startup for MPICH2/PMI and will
provide the patch as well. 

I hope everything is ready next week.

Best Regards,
Frank

> 
> In the mean time I've cheked in a patch to fix the "no hope" bug
> above.  It should keep trying even if it doesn't know version 8.
> There is practically no chance that this will solve your problem,
> so please keep using 0.9.9 for a while.
> 
> 		-- Pete
> 
> 
> Modified: trunk/ib.c
> ===================================================================
> --- trunk/ib.c	2008-03-11 18:57:43 UTC (rev 414)
> +++ trunk/ib.c	2008-03-14 14:38:02 UTC (rev 415)
> @@ -26,6 +26,7 @@
>  
>  /* parameters for initial data read from each process */
>  static int version = -1;
> +static int version_as_read = -1;  /* to check for mixed version only */
>  static char *address = 0;
>  static int address_size = 0;
>  static char *pids = 0;
> @@ -251,19 +252,19 @@
>  
>      if (version == -1) {
>  	version = testvers;
> +	version_as_read = testvers;
>  	if (!(version == 1 || version == 2 || version == 3 || version == 5 ||
>  	      version == 6)) {
> -	    warning(
> -	      "%s: protocol version %d not known, but might still work",
> -	      __func__, version);
> +	    warning("%s: protocol version %d not known, but might still work",
> +	            __func__, version);
>  	    version = 6;  /* guess the latest still works */
>  	}
>  	debug(1, "%s: version %d startup%s", __func__, version,
> -	  non_versioned_092 ? " (unversioned)" : "");
> +	      non_versioned_092 ? " (unversioned)" : "");
>      } else {
> -	if (version != testvers)
> +	if (version_as_read != testvers)
>  	    error("%s: mixed version executables (%d and %d), no hope",
> -	      __func__, version, testvers);
> +	          __func__, version_as_read, testvers);
>      }
>      if (rank < 0 || rank >= numtasks)
>  	error("%s: rank %d out of bounds [0..%d)", __func__, rank, numtasks);
> 
> 
> 

-- 
Dipl.-Inf. Frank Mietke     |     Fakultätsrechen- und Informationszentrum
Tel.: 0371 - 531 - 35538    |     Fak. für Informatik
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