[MPICH] error 66, MPI 1.04p1

[Joe Landman]

Hi Marty:

  Thursday afternoon is looking good.  After 2pm EST.

Joe

Rajeev Thakur wrote:
> An Isend is required to be completed by a Wait. The Wait frees the request
> object returned by the Isend.
> 
> Rajeev 
> 
>> -----Original Message-----
>> From: chong tan [mailto:chong_guan_tan at yahoo.com] 
>> Sent: Monday, August 28, 2006 5:40 PM
>> To: Rajeev Thakur; mpich-discuss at mcs.anl.gov
>> Subject: RE: [MPICH] error 66, MPI 1.04p1
>>
>>
>> Inst Recv supposed to force a sync ? 
>> tan
>>
>>
>> --- Rajeev Thakur <thakur at mcs.anl.gov> wrote:
>>
>>> You are doing too many Isends without calling
>>> MPI_Wait to free the requests.
>>> You need to add MPI_Wait.
>>>
>>> Rajeev 
>>>
>>>> -----Original Message-----
>>>> From: owner-mpich-discuss at mcs.anl.gov 
>>>> [mailto:owner-mpich-discuss at mcs.anl.gov] On Behalf
>>> Of chong tan
>>>> Sent: Monday, August 28, 2006 3:10 PM
>>>> To: mpich-discuss at mcs.anl.gov
>>>> Subject: [MPICH] error 66, MPI 1.04p1
>>>>
>>>> run this liktle test and get error 66.
>>>>
>>>> #define MPICH_IGNORE_CXX_SEEK
>>>> #include "stdio.h"
>>>> #include "mpi.h"
>>>>
>>>>
>>>>
>>>> #define COUNT           200000
>>>> #define DATA_SIZE       2048
>>>>
>>>> main( int *argc, char ***argv )
>>>> {
>>>>    int  rank, nproc ;
>>>>    int  buf[ DATA_SIZE ] ;
>>>>    int  **inbuf ;
>>>>    int  i, j ;
>>>>    char *processor_name ;
>>>>
>>>>    processor_name = new char [
>>> MPI_MAX_PROCESSOR_NAME
>>>> ] ;
>>>>    MPI_Init( argc, argv ) ;
>>>>    rank = MPI::COMM_WORLD.Get_rank( );
>>>>    nproc = MPI::COMM_WORLD.Get_size( );
>>>>
>>>>
>>>>    inbuf = (int **)new int* [ nproc ] ;
>>>>    for( i = 0 ; i < nproc ; i++ ) {
>>>>         inbuf[ i ] = new int[ DATA_SIZE ] ;
>>>>    }
>>>>    if( rank == 0 ) {
>>>>       for( i = 0 ; i < COUNT ; i++ ) {
>>>>         for( j = 1 ; j < nproc ; j++ ) {
>>>>             MPI::COMM_WORLD.Isend( buf, DATA_SIZE,
>>>> MPI::INT, j, 999 ) ;
>>>>             MPI::COMM_WORLD.Recv( inbuf[ j ],
>>>> DATA_SIZE, MPI::INT, j, 999 ) ;
>>>>         }
>>>>       }
>>>>       printf( "MASTER END..\n" ) ;
>>>>    } else {
>>>>       for( i = 0 ; i < COUNT ; i++ ) {
>>>>         for( j = 1 ; j < nproc ; j++ ) {
>>>>             MPI::COMM_WORLD.Isend( buf, DATA_SIZE,
>>>> MPI::INT, j, 999 ) ;
>>>>             MPI::COMM_WORLD.Recv( inbuf[ j ],
>>>> DATA_SIZE, MPI::INT, j, 999 ) ;
>>>>         }
>>>>       }
>>>>       printf( "SLAGE %d END..\n", rank ) ;
>>>>    }
>>>>    MPI::Finalize() ;
>>>> }
>>>>
>>>> mpicxx main.cc
>>>> mpiexec -n 2 a.out
>>>> INTERNAL ERROR: Invalid error class (66)
>>> encountered
>>>> while returning from
>>>> MPI_Recv.  Please file a bug report.  No error
>>> stack
>>>> is available.
>>>> [cli_0]: aborting job:
>>>> Fatal error in MPI_Recv: Error message texts are
>>> not
>>>> available
>>>>
>>>>
>>>>
>>>>
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>>
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-- 
Joseph Landman, Ph.D
Founder and CEO
Scalable Informatics LLC,
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