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<link title="Mpi" rel="Chapter" href="Mpi.html"><title>Index of values</title>
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<h1>Index of values</h1>
<table>
<tr><td align="left"><br>A</td></tr>
<tr><td><a href="Mpi.html#VALallgather">allgather</a> [<a href="Mpi.html">Mpi</a>]</td>
<td></td></tr>
<tr><td><a href="Mpi.html#VALallgather_float">allgather_float</a> [<a href="Mpi.html">Mpi</a>]</td>
<td></td></tr>
<tr><td><a href="Mpi.html#VALallgather_float_array">allgather_float_array</a> [<a href="Mpi.html">Mpi</a>]</td>
<td><div class="info">
The <code class="code">Mpi.allgather*</code> functions behave like the corresponding
<code class="code">Mpi.gather*</code> functions, except that the result of the gather
operation is available at all nodes, not only at the root node.
</div>
</td></tr>
<tr><td><a href="Mpi.html#VALallgather_int">allgather_int</a> [<a href="Mpi.html">Mpi</a>]</td>
<td></td></tr>
<tr><td><a href="Mpi.html#VALallgather_int_array">allgather_int_array</a> [<a href="Mpi.html">Mpi</a>]</td>
<td></td></tr>
<tr><td><a href="Mpi.html#VALallreduce_float">allreduce_float</a> [<a href="Mpi.html">Mpi</a>]</td>
<td></td></tr>
<tr><td><a href="Mpi.html#VALallreduce_float_array">allreduce_float_array</a> [<a href="Mpi.html">Mpi</a>]</td>
<td><div class="info">
The <code class="code">Mpi.allreduce_*</code> operations are similar to the
corresponding <code class="code">Mpi.reduce_*</code> operations, except that the result
of the reduction is made available at all nodes.
</div>
</td></tr>
<tr><td><a href="Mpi.html#VALallreduce_int">allreduce_int</a> [<a href="Mpi.html">Mpi</a>]</td>
<td></td></tr>
<tr><td><a href="Mpi.html#VALallreduce_int_array">allreduce_int_array</a> [<a href="Mpi.html">Mpi</a>]</td>
<td></td></tr>
<tr><td><a href="Mpi.html#VALany_source">any_source</a> [<a href="Mpi.html">Mpi</a>]</td>
<td><div class="info">
The special values of the <code class="code">tag</code> and <code class="code">src</code> arguments of
<code class="code">Mpi.receive</code>, <code class="code">Mpi.receive_status</code> and <code class="code">Mpi.probe</code>,
indicating that any message tag is acceptable (for <code class="code">Mpi.any_tag</code>)
or any message source is acceptable (for <code class="code">Mpi.any_source</code>).
</div>
</td></tr>
<tr><td><a href="Mpi.html#VALany_tag">any_tag</a> [<a href="Mpi.html">Mpi</a>]</td>
<td></td></tr>
<tr><td align="left"><br>B</td></tr>
<tr><td><a href="Mpi.html#VALbarrier">barrier</a> [<a href="Mpi.html">Mpi</a>]</td>
<td><div class="info">
<code class="code">Mpi.barrier comm</code> suspends the calling process until all
nodes in communicator <code class="code">comm</code> are executing <code class="code">Mpi.barrier comm</code>.
</div>
</td></tr>
<tr><td><a href="Mpi.html#VALbroadcast">broadcast</a> [<a href="Mpi.html">Mpi</a>]</td>
<td><div class="info">
<code class="code">Mpi.broadcast d root comm</code> broadcasts data <code class="code">d</code> from node
with rank <code class="code">root</code> in <code class="code">comm</code> to all other nodes in <code class="code">comm</code>.
</div>
</td></tr>
<tr><td><a href="Mpi.html#VALbroadcast_float">broadcast_float</a> [<a href="Mpi.html">Mpi</a>]</td>
<td></td></tr>
<tr><td><a href="Mpi.html#VALbroadcast_float_array">broadcast_float_array</a> [<a href="Mpi.html">Mpi</a>]</td>
<td><div class="info">
Specialized versions of <code class="code">Mpi.broadcast</code> for integers, floats,
arrays of integers and arrays of floats.
</div>
</td></tr>
<tr><td><a href="Mpi.html#VALbroadcast_int">broadcast_int</a> [<a href="Mpi.html">Mpi</a>]</td>
<td></td></tr>
<tr><td><a href="Mpi.html#VALbroadcast_int_array">broadcast_int_array</a> [<a href="Mpi.html">Mpi</a>]</td>
<td></td></tr>
<tr><td><a href="Mpi.html#VALbroadcast_opt">broadcast_opt</a> [<a href="Mpi.html">Mpi</a>]</td>
<td><div class="info">
Same as <code class="code">Mpi.broadcast</code>, except that the data (first argument)
is provided as an option type.
</div>
</td></tr>
<tr><td align="left"><br>C</td></tr>
<tr><td><a href="Mpi.html#VALcart_coords">cart_coords</a> [<a href="Mpi.html">Mpi</a>]</td>
<td><div class="info">
The inverse operation of <code class="code">Mpi.cart_rank</code>.
</div>
</td></tr>
<tr><td><a href="Mpi.html#VALcart_create">cart_create</a> [<a href="Mpi.html">Mpi</a>]</td>
<td><div class="info">
<code class="code">Mpi.cart_create comm dims periodic reorder</code> embeds a cartesian
topology (multi-dimensional grid) on the nodes of
communicator <code class="code">comm</code>, and return a
new communicator with that information attached.
</div>
</td></tr>
<tr><td><a href="Mpi.html#VALcart_rank">cart_rank</a> [<a href="Mpi.html">Mpi</a>]</td>
<td><div class="info">
<code class="code">Mpi.cart_rank comm coords</code> return the rank of the node in
the cartesian topology <code class="code">comm</code> that is at coordinates <code class="code">coords</code>.
</div>
</td></tr>
<tr><td><a href="Mpi.html#VALcolor_none">color_none</a> [<a href="Mpi.html">Mpi</a>]</td>
<td><div class="info">
In <code class="code">Mpi.comm_split</code>, a node can pass <code class="code">Mpi.color_none</code> as the
<code class="code">col</code> argument to indicate that it does not want to be part
of any of the new communicators.
</div>
</td></tr>
<tr><td><a href="Mpi.html#VALcomm_compare">comm_compare</a> [<a href="Mpi.html">Mpi</a>]</td>
<td><div class="info">
Compare two communicators and return <code class="code">true</code> if they are the same,
<code class="code">false</code> otherwise.
</div>
</td></tr>
<tr><td><a href="Mpi.html#VALcomm_create">comm_create</a> [<a href="Mpi.html">Mpi</a>]</td>
<td><div class="info">
<code class="code">Mpi.comm_create comm group</code> creates a communicator
whose nodes are those described in <code class="code">group</code>.
</div>
</td></tr>
<tr><td><a href="Mpi.html#VALcomm_group">comm_group</a> [<a href="Mpi.html">Mpi</a>]</td>
<td><div class="info">
<code class="code">Mpi.comm_group comm</code> returns the group of all nodes belonging
to the communicator <code class="code">comm</code>, with the same ranks as in <code class="code">comm</code>.
</div>
</td></tr>
<tr><td><a href="Mpi.html#VALcomm_rank">comm_rank</a> [<a href="Mpi.html">Mpi</a>]</td>
<td><div class="info">
Return the rank of the calling node in the given communicator.
</div>
</td></tr>
<tr><td><a href="Mpi.html#VALcomm_size">comm_size</a> [<a href="Mpi.html">Mpi</a>]</td>
<td><div class="info">
Return the size (number of nodes) in the given communicator.
</div>
</td></tr>
<tr><td><a href="Mpi.html#VALcomm_split">comm_split</a> [<a href="Mpi.html">Mpi</a>]</td>
<td><div class="info">
<code class="code">Mpi.comm_split comm col key</code> splits the communicator into
several communicators based on the values of <code class="code">col</code> and
<code class="code">key</code> at every node.
</div>
</td></tr>
<tr><td><a href="Mpi.html#VALcomm_world">comm_world</a> [<a href="Mpi.html">Mpi</a>]</td>
<td><div class="info">
The global communicator.
</div>
</td></tr>
<tr><td align="left"><br>D</td></tr>
<tr><td><a href="Mpi.html#VALdims_create">dims_create</a> [<a href="Mpi.html">Mpi</a>]</td>
<td><div class="info">
<code class="code">Mpi.dims_create numnodes hints</code> helps determining a
suitable <code class="code">dims</code> argument to <code class="code">Mpi.cart_create</code>
given a number of nodes <code class="code">numnodes</code>, the number of
dimensions required, and optional constraints.
</div>
</td></tr>
<tr><td align="left"><br>G</td></tr>
<tr><td><a href="Mpi.html#VALgather">gather</a> [<a href="Mpi.html">Mpi</a>]</td>
<td><div class="info">
<code class="code">Mpi.gather d root comm</code> gathers the values of the <code class="code">d</code> argument
at all nodes onto node <code class="code">root</code>, and returns those values as an
array.
</div>
</td></tr>
<tr><td><a href="Mpi.html#VALgather_float">gather_float</a> [<a href="Mpi.html">Mpi</a>]</td>
<td><div class="info">
Specialized versions of <code class="code">Mpi.gather</code> for integers and floats.
</div>
</td></tr>
<tr><td><a href="Mpi.html#VALgather_float_array">gather_float_array</a> [<a href="Mpi.html">Mpi</a>]</td>
<td><div class="info">
Specialized versions of <code class="code">Mpi.gather</code> for arrays of integers and
arrays of floats.
</div>
</td></tr>
<tr><td><a href="Mpi.html#VALgather_int">gather_int</a> [<a href="Mpi.html">Mpi</a>]</td>
<td></td></tr>
<tr><td><a href="Mpi.html#VALgather_int_array">gather_int_array</a> [<a href="Mpi.html">Mpi</a>]</td>
<td></td></tr>
<tr><td><a href="Mpi.html#VALgroup_difference">group_difference</a> [<a href="Mpi.html">Mpi</a>]</td>
<td><div class="info">
Union, intersection and set difference over groups.
</div>
</td></tr>
<tr><td><a href="Mpi.html#VALgroup_excl">group_excl</a> [<a href="Mpi.html">Mpi</a>]</td>
<td><div class="info">
<code class="code">Mpi.group_excl group ranks</code> returns the subset of <code class="code">group</code>
containing the nodes whose ranks are not given in the array
<code class="code">ranks</code>.
</div>
</td></tr>
<tr><td><a href="Mpi.html#VALgroup_incl">group_incl</a> [<a href="Mpi.html">Mpi</a>]</td>
<td><div class="info">
<code class="code">Mpi.group_incl group ranks</code> returns the subset of <code class="code">group</code>
containing the nodes whose ranks are given in the array <code class="code">ranks</code>.
</div>
</td></tr>
<tr><td><a href="Mpi.html#VALgroup_intersection">group_intersection</a> [<a href="Mpi.html">Mpi</a>]</td>
<td></td></tr>
<tr><td><a href="Mpi.html#VALgroup_range_excl">group_range_excl</a> [<a href="Mpi.html">Mpi</a>]</td>
<td><div class="info">
<code class="code">Mpi.group_range_excl group ranges</code> returns the subset of <code class="code">group</code>
containing the nodes whose ranks do not belong to the ranges
listed in <code class="code">ranges</code>.
</div>
</td></tr>
<tr><td><a href="Mpi.html#VALgroup_range_incl">group_range_incl</a> [<a href="Mpi.html">Mpi</a>]</td>
<td><div class="info">
<code class="code">Mpi.group_range_incl group ranges</code> returns the subset of <code class="code">group</code>
containing the nodes whose ranks belong to the ranges
listed in <code class="code">ranges</code>.
</div>
</td></tr>
<tr><td><a href="Mpi.html#VALgroup_rank">group_rank</a> [<a href="Mpi.html">Mpi</a>]</td>
<td><div class="info">
Return the rank of the calling node in the given group.
</div>
</td></tr>
<tr><td><a href="Mpi.html#VALgroup_size">group_size</a> [<a href="Mpi.html">Mpi</a>]</td>
<td><div class="info">
Return the size (number of nodes) in the given group.
</div>
</td></tr>
<tr><td><a href="Mpi.html#VALgroup_translate_ranks">group_translate_ranks</a> [<a href="Mpi.html">Mpi</a>]</td>
<td><div class="info">
<code class="code">Mpi.group_translate_ranks g1 ranks g2</code> translates the ranks
of a number of nodes from one group to another.
</div>
</td></tr>
<tr><td><a href="Mpi.html#VALgroup_union">group_union</a> [<a href="Mpi.html">Mpi</a>]</td>
<td></td></tr>
<tr><td align="left"><br>P</td></tr>
<tr><td><a href="Mpi.html#VALprobe">probe</a> [<a href="Mpi.html">Mpi</a>]</td>
<td><div class="info">
<code class="code">Mpi.probe src tag comm</code> blocks until a message is available
on communicator <code class="code">comm</code>, with source and tag matching the
<code class="code">src</code> and <code class="code">tag</code> arguments as described in <code class="code">Mpi.receive</code>.
</div>
</td></tr>
<tr><td align="left"><br>R</td></tr>
<tr><td><a href="Mpi.html#VALreceive">receive</a> [<a href="Mpi.html">Mpi</a>]</td>
<td><div class="info">
<code class="code">Mpi.receive src tag comm</code> blocks until a message is available,
and returns the data contained in that message.
</div>
</td></tr>
<tr><td><a href="Mpi.html#VALreceive_float">receive_float</a> [<a href="Mpi.html">Mpi</a>]</td>
<td></td></tr>
<tr><td><a href="Mpi.html#VALreceive_float_array">receive_float_array</a> [<a href="Mpi.html">Mpi</a>]</td>
<td><div class="info">
Specialized versions of <code class="code">Mpi.send</code> and <code class="code">Mpi.receive</code>
for communicating integers, floating-point numbers,
arrays of integers, and arrays of floating-point numbers.
</div>
</td></tr>
<tr><td><a href="Mpi.html#VALreceive_int">receive_int</a> [<a href="Mpi.html">Mpi</a>]</td>
<td></td></tr>
<tr><td><a href="Mpi.html#VALreceive_int_array">receive_int_array</a> [<a href="Mpi.html">Mpi</a>]</td>
<td></td></tr>
<tr><td><a href="Mpi.html#VALreceive_status">receive_status</a> [<a href="Mpi.html">Mpi</a>]</td>
<td><div class="info">
Same as <code class="code">Mpi.receive</code>, but returns a triple <code class="code">(d, src, tag)</code>
where <code class="code">d</code> is the data associated with the message,
<code class="code">src</code> the rank of the node that sent the message,
and <code class="code">tag</code> the actual tag attached to the message.
</div>
</td></tr>
<tr><td><a href="Mpi.html#VALreduce_float">reduce_float</a> [<a href="Mpi.html">Mpi</a>]</td>
<td><div class="info">
<code class="code">Mpi.reduce_int d op root comm</code> computes the value of
<code class="code">d0 op d1 op ... op dN</code>, where <code class="code">d0 ... dN</code> are the values of
the <code class="code">d</code> argument at every node in <code class="code">comm</code>.
</div>
</td></tr>
<tr><td><a href="Mpi.html#VALreduce_float_array">reduce_float_array</a> [<a href="Mpi.html">Mpi</a>]</td>
<td><div class="info">
<code class="code">Mpi.reduce_int_array d res op root comm</code> computes
<code class="code">Array.length d</code> reductions by operation <code class="code">op</code> simultaneously.
</div>
</td></tr>
<tr><td><a href="Mpi.html#VALreduce_int">reduce_int</a> [<a href="Mpi.html">Mpi</a>]</td>
<td></td></tr>
<tr><td><a href="Mpi.html#VALreduce_int_array">reduce_int_array</a> [<a href="Mpi.html">Mpi</a>]</td>
<td></td></tr>
<tr><td align="left"><br>S</td></tr>
<tr><td><a href="Mpi.html#VALscan_float">scan_float</a> [<a href="Mpi.html">Mpi</a>]</td>
<td><div class="info">
<code class="code">Mpi.scan_int d res op comm</code> performs a scan operation over
the integers <code class="code">d</code> at every node.
</div>
</td></tr>
<tr><td><a href="Mpi.html#VALscan_float_array">scan_float_array</a> [<a href="Mpi.html">Mpi</a>]</td>
<td><div class="info">
Same as <code class="code">Mpi.scan_int</code> and <code class="code">Mpi.scan_float</code>, but perform several
scanning operations on the elements of the input array (first
argument).
</div>
</td></tr>
<tr><td><a href="Mpi.html#VALscan_int">scan_int</a> [<a href="Mpi.html">Mpi</a>]</td>
<td></td></tr>
<tr><td><a href="Mpi.html#VALscan_int_array">scan_int_array</a> [<a href="Mpi.html">Mpi</a>]</td>
<td></td></tr>
<tr><td><a href="Mpi.html#VALscatter">scatter</a> [<a href="Mpi.html">Mpi</a>]</td>
<td><div class="info">
<code class="code">Mpi.scatter a root comm</code> scatters the elements of array <code class="code">a</code>
from node <code class="code">root</code> to all nodes in <code class="code">comm</code>.
</div>
</td></tr>
<tr><td><a href="Mpi.html#VALscatter_float">scatter_float</a> [<a href="Mpi.html">Mpi</a>]</td>
<td><div class="info">
Specialized versions of <code class="code">Mpi.scatter</code> for integers and floats.
</div>
</td></tr>
<tr><td><a href="Mpi.html#VALscatter_float_array">scatter_float_array</a> [<a href="Mpi.html">Mpi</a>]</td>
<td><div class="info">
Specialized versions of <code class="code">Mpi.scatter</code> for arrays of integers and
arrays of floats.
</div>
</td></tr>
<tr><td><a href="Mpi.html#VALscatter_int">scatter_int</a> [<a href="Mpi.html">Mpi</a>]</td>
<td></td></tr>
<tr><td><a href="Mpi.html#VALscatter_int_array">scatter_int_array</a> [<a href="Mpi.html">Mpi</a>]</td>
<td></td></tr>
<tr><td><a href="Mpi.html#VALsend">send</a> [<a href="Mpi.html">Mpi</a>]</td>
<td><div class="info">
<code class="code">Mpi.send d dst tag comm</code> sends a message containing data <code class="code">d</code>
to the node that has rank <code class="code">dst</code> in communicator <code class="code">comm</code>.
</div>
</td></tr>
<tr><td><a href="Mpi.html#VALsend_float">send_float</a> [<a href="Mpi.html">Mpi</a>]</td>
<td></td></tr>
<tr><td><a href="Mpi.html#VALsend_float_array">send_float_array</a> [<a href="Mpi.html">Mpi</a>]</td>
<td></td></tr>
<tr><td><a href="Mpi.html#VALsend_int">send_int</a> [<a href="Mpi.html">Mpi</a>]</td>
<td></td></tr>
<tr><td><a href="Mpi.html#VALsend_int_array">send_int_array</a> [<a href="Mpi.html">Mpi</a>]</td>
<td></td></tr>
<tr><td align="left"><br>W</td></tr>
<tr><td><a href="Mpi.html#VALwtime">wtime</a> [<a href="Mpi.html">Mpi</a>]</td>
<td><div class="info">
Return the wall-clock time elapsed at the calling node
since the beginning of the program execution.
</div>
</td></tr>
</table>
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