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-<h2>The <code>upc_all_scatter</code> function</h2>
-
-<h4>Synopsis</h4>
-<pre>
- #include &lt;upc.h&gt;
- #include &lt;upc_collective.h&gt;
- void upc_all_scatter(shared void * restrict dst,
- shared const void * restrict src,
- size_t nbytes,
- upc_flag_t flags);
-
-</pre>
-<p>
-<h4>Description</h4>
-<p>
-The <code>upc_all_scatter </code> function
-copies the ith block of an area of shared
-memory with affinity to a single thread to a block of shared memory with
-affinity to the ith thread. The number of bytes in each block is <code>nbytes</code>.
-<p><code>nbytes</code> must be strictly greater than 0.
-<p>The <code>upc_all_scatter </code> function treats the <code>src</code> pointer as if it pointed to a
-shared memory area with the type:
-<pre>
- shared [] char[nbytes * THREADS]
- </pre>
-<p>and it treats the <code>dst</code> pointer as if it pointed to a shared memory area with
-the type:
-<pre>
- shared [nbytes] char[nbytes * THREADS]
-</pre>
-<p>The target of the <code>dst</code> pointer must have affinity to thread 0.
-<p>The <code>dst</code> pointer is treated as if it has phase 0.
-<p>For each thread i, the effect is equivalent to copying the ith block of <code>nbytes</code>
-bytes pointed to by <code>src</code> to the block of <code>nbytes</code> bytes pointed to by
-<code>dst</code> that
-has affinity to thread i.
-<ul>
-<li>EXAMPLE 1: <code>upc_all_scatter</code> for the dynamic THREADS translation environment.
-<pre>
-#include &lt;upc.h&gt;
-#include &lt;upc_collective.h&gt;
-#define NUMELEMS 10
-#define SRC_THREAD 1
-shared int *A;
-shared [] int *myA, *srcA;
-shared [NUMELEMS] int B[NUMELEMS*THREADS];
-// allocate and initialize an array distributed across all threads
-A = upc_all_alloc(THREADS, THREADS*NUMELEMS*sizeof(int));
-myA = (shared [] int *) &A[MYTHREAD];
-for (i=0; i<NUMELEMS*THREADS; i++)
-myA[i] = i + NUMELEMS*THREADS*MYTHREAD; // (for example)
-// scatter the SRC_THREADÕs row of the array
-srcA = (shared [] int *) &A[SRC_THREAD];
-upc_barrier;
-upc_all_scatter( B, srcA, sizeof(int)*NUMELEMS,
-UPC_IN_NOSYNC | UPC_OUT_NOSYNC);
-upc_barrier;
-</pre>
-<li>EXAMPLE 2: <code>upc_all_scatter</code> for the static THREADS translation environment.
-<pre>
-#include &lt;upc.h&gt;
-#include &lt;upc_collective.h&gt;
-#define NELEMS 10
-shared [] int A[NELEMS*THREADS];
-shared [NELEMS] int B[NELEMS*THREADS];
-
-// Initialize A.
-upc_all_scatter( B, A, sizeof(int)*NELEMS,
-UPC_IN_ALLSYNC | UPC_OUT_ALLSYNC );
-</pre>
-
-</ul>
-<p>&nbsp
-<p>&nbsp
-<p><a href="terms.html">Terms, definitions, and symbols</a><br>
-<p><a href="index.html">Back to index of all UPC functions</a>

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