[mpich-discuss] Please help, Error with MPI_scatter

[Rajeev Thakur]

If you are not using a count value that large, something else is wrong in your code. (Derived datatypes won't help.)


On Apr 20, 2012, at 9:23 AM, diana adiyani ahmad wrote:

> Hi,
> 
> Can you show how to using derived datatypes?
>  
> Diana Adiyani Ahmad
> R&D SerindIT Com UUM Sdn Bhd
> 04-9190197 
> 
> From: Jayesh Krishna <jayesh at mcs.anl.gov>
> To: diana adiyani ahmad <daa_adiaz5728 at yahoo.com>; mpich-discuss at mcs.anl.gov 
> Cc: Najah Abdul Rahman <najah.silvercs at gmail.com>; shura Asshura <nurulasshura at yahoo.com> 
> Sent: Friday, April 20, 2012 4:09 AM
> Subject: Re: [mpich-discuss] Please help, Error with MPI_scatter
> 
> Hi,
> Looks like you are running on a 32-bit machine and hit by the max size of an integer used for count argument in the Scatter call (Is the count = 2576980378 ?). Try using derived datatypes.
> 
> Regards,
> Jayesh
> 
> ----- Original Message -----
> From: "diana adiyani ahmad" <daa_adiaz5728 at yahoo.com>
> To: mpich-discuss at mcs.anl.gov
> Cc: "Najah Abdul Rahman" <najah.silvercs at gmail.com>, "shura Asshura" <nurulasshura at yahoo.com>
> Sent: Thursday, April 19, 2012 3:46:57 AM
> Subject: Re: [mpich-discuss] Please help, Error with MPI_scatter
> 
> 
> 
> 
> My coding is at attachment. 
> 
> 
> Thank you. 
> 
> Diana Adiyani Ahmad 
> R&D SerindIT Com UUM Sdn Bhd 
> 
> 04-9190197 
> 
> 
> 
> 
> 
> 
> From: diana adiyani ahmad <daa_adiaz5728 at yahoo.com> 
> To: "mpich-discuss at mcs.anl.gov" <mpich-discuss at mcs.anl.gov> 
> Cc: Najah Abdul Rahman <najah.silvercs at gmail.com>; shura Asshura <nurulasshura at yahoo.com> 
> Sent: Thursday, April 19, 2012 12:52 PM 
> Subject: [mpich-discuss] Please help, Error with MPI_scatter 
> 
> 
> 
> 
> 
> I have a big problem with MPI, this is the error : 
> ------------------------------------------------------------------------ 
> 
> 
> Microsoft Windows XP [Version 5.1.2600] 
> (C) Copyright 1985-2001 Microsoft Corp. 
> 
> C:\Documents and Settings\user>cd C:\Documents and Settings\user\My Documents\Vi 
> sual Studio 2008\Projects\MPICH\Debug 
> 
> C:\Documents and Settings\user\My Documents\Visual Studio 2008\Projects\MPICH\De 
> bug>mpiexec -hosts 2 192.168.1.12 192.168.1.43 mpich.exe 
> Fatal error in PMPI_Scatter: Invalid count, error stack: 
> PMPI_Scatter(791): MPI_Scatter(sbuf=00000000, scount=-429496730, MPI_INT, rbuf=0 
> 0000000, rcount=-429496730, MPI_INT, root=0, MPI_COMM_WORLD) failed 
> PMPI_Scatter(728): Negative count, value is -429496730 
> 
> job aborted: 
> rank: node: exit code[: error message] 
> 0: 192.168.1.12: 1: process 0 exited without calling finalize 
> 1: 192.168.1.43: 123 
> 
> 
> Diana Adiyani Ahmad 
> R&D SerindIT Com UUM Sdn Bhd 
> 
> 04-9190197 
> 
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