Re: [Starpu-devel] registering handles

[Samuel Thibault <samuel.thibault@inria.fr>]

Hello,

Hatem Ltaief, on mar. 27 mars 2018 07:46:35 +0000, wrote:
> [starpu][_starpu_select_src_node][assert failure] The data for the handle
> 0xb1f6c10 is requested, but the handle does not have a valid value. Perhaps
> some initialization task is missing?

> I am calling my MORSE task like this:
> 
>     for (int nt=0;nt<timestep;nt++) {
>         for (int nd=0;nd<ndomains;nd++) {                                   
>    
>                      
>            printf("\nnt %d nd %d %d %d\n", nt, nd, Unew->mb, Unew->nb);     
>    
>                                
>            MORSE_TASK_iow( Unew, nd, 0, nx, ny, nz, nt );                   
>    
>                      
>         }                                                                   
>    
>                      
>     } 
> 
> and the task is defined as follows:

>   starpu_insert_task(                                                       
>   
>                        
>       starpu_mpi_codelet(codelet),                                          
>   
>                        
>       STARPU_R    , RTBLKADDR(U,float,i,j),                                 
>   

As the error message says, this is reading the value of U[i,j], but was
that initialized?

Samuel