The upc_affinitysize function

Synopsis

    
    #include <upc.h>
    size_t upc_affinitysize(size_t totalsize, 
                            size_t nbytes,
                            size_t threadid);                

Description

The upc_affinitysize function is a convenience function which calculates the exact size of the local portion of the data in a shared object with affinity to threadid.

In the case of a dynamically allocated shared object, the totalsize argument shall be nbytes*nblocks and the nbytes argument shall be nbytes, where nblocks and nbytes are exactly as passed to upc_global_alloc or upc_all_alloc when the object was allocated.

In the case of a statically allocated shared object with declaration:

   shared [b] t d[s];
   
the totalsize argument shall be s * sizeof(t) and the nbytes argument shall be b * sizeof(t). If the block size is indefinite, nbytes shall be 0.

threadid shall be a value in 0..(THREADS-1).

 

 

Terms, definitions, and symbols

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