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<a href="mpi4py-module.html">Package mpi4py</a> ::
<a href="mpi4py.MPI-module.html">Module MPI</a> ::
Class Intracomm
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<!-- ==================== CLASS DESCRIPTION ==================== -->
<h1 class="epydoc">Class Intracomm</h1><p class="nomargin-top"></p>
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<center> <map id="class_hierarchy_for_intracomm" name="class_hierarchy_for_intracomm">
<area shape="rect" href="mpi4py.MPI.Cartcomm-class.html" title="Cartcomm" alt="" coords="5,117,88,144"/>
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<area shape="rect" href="mpi4py.MPI.Intracomm-class.html" title="Intracomm" alt="" coords="129,61,212,88"/>
<area shape="rect" href="mpi4py.MPI.Distgraphcomm-class.html" title="Distgraphcomm" alt="" coords="112,117,229,144"/>
<area shape="rect" href="mpi4py.MPI.Graphcomm-class.html" title="Graphcomm" alt="" coords="253,117,349,144"/>
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Intracommunicator
<!-- ==================== INSTANCE METHODS ==================== -->
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<td align="left"><span class="table-header">Instance Methods</span></td>
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class="privatelink" onclick="toggle_private();"
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<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr>
<td><span class="summary-sig"><a name="Accept"></a><span class="summary-sig-name">Accept</span>(<span class="summary-sig-arg">self</span>,
<span class="summary-sig-arg">port_name</span>,
<span class="summary-sig-arg">Info info</span>=<span class="summary-sig-default">INFO_NULL</span>,
<span class="summary-sig-arg">int root</span>=<span class="summary-sig-default">0</span>)</span><br />
Accept a request to form a new intercommunicator</td>
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</td>
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<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr>
<td><span class="summary-sig"><a name="Connect"></a><span class="summary-sig-name">Connect</span>(<span class="summary-sig-arg">self</span>,
<span class="summary-sig-arg">port_name</span>,
<span class="summary-sig-arg">Info info</span>=<span class="summary-sig-default">INFO_NULL</span>,
<span class="summary-sig-arg">int root</span>=<span class="summary-sig-default">0</span>)</span><br />
Make a request to form a new intercommunicator</td>
<td align="right" valign="top">
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr>
<td><span class="summary-sig"><a name="Create"></a><span class="summary-sig-name">Create</span>(<span class="summary-sig-arg">self</span>,
<span class="summary-sig-arg">Group group</span>)</span><br />
Create intracommunicator from group</td>
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</td>
</tr>
</table>
</td>
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<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
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<td><span class="summary-sig"><a name="Create_cart"></a><span class="summary-sig-name">Create_cart</span>(<span class="summary-sig-arg">self</span>,
<span class="summary-sig-arg">dims</span>,
<span class="summary-sig-arg">periods</span>=<span class="summary-sig-default">None</span>,
<span class="summary-sig-arg">int reorder</span>=<span class="summary-sig-default">False</span>)</span><br />
Create cartesian communicator</td>
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</td>
</tr>
</table>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr>
<td><span class="summary-sig"><a name="Create_dist_graph"></a><span class="summary-sig-name">Create_dist_graph</span>(<span class="summary-sig-arg">self</span>,
<span class="summary-sig-arg">sources</span>,
<span class="summary-sig-arg">degrees</span>,
<span class="summary-sig-arg">destinations</span>,
<span class="summary-sig-arg">weights</span>=<span class="summary-sig-default">None</span>,
<span class="summary-sig-arg">Info info</span>=<span class="summary-sig-default">INFO_NULL</span>,
<span class="summary-sig-arg">int reorder</span>=<span class="summary-sig-default">False</span>)</span><br />
Create distributed graph communicator</td>
<td align="right" valign="top">
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr>
<td><span class="summary-sig"><a name="Create_dist_graph_adjacent"></a><span class="summary-sig-name">Create_dist_graph_adjacent</span>(<span class="summary-sig-arg">self</span>,
<span class="summary-sig-arg">sources</span>,
<span class="summary-sig-arg">destinations</span>,
<span class="summary-sig-arg">sourceweights</span>=<span class="summary-sig-default">None</span>,
<span class="summary-sig-arg">destweights</span>=<span class="summary-sig-default">None</span>,
<span class="summary-sig-arg">Info info</span>=<span class="summary-sig-default">INFO_NULL</span>,
<span class="summary-sig-arg">int reorder</span>=<span class="summary-sig-default">False</span>)</span><br />
Create distributed graph communicator</td>
<td align="right" valign="top">
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr>
<td><span class="summary-sig"><a name="Create_graph"></a><span class="summary-sig-name">Create_graph</span>(<span class="summary-sig-arg">self</span>,
<span class="summary-sig-arg">index</span>,
<span class="summary-sig-arg">edges</span>,
<span class="summary-sig-arg">int reorder</span>=<span class="summary-sig-default">False</span>)</span><br />
Create graph communicator</td>
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</td>
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</table>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr>
<td><span class="summary-sig"><a name="Create_intercomm"></a><span class="summary-sig-name">Create_intercomm</span>(<span class="summary-sig-arg">self</span>,
<span class="summary-sig-arg">int local_leader</span>,
<span class="summary-sig-arg">Intracomm peer_comm</span>,
<span class="summary-sig-arg">int remote_leader</span>,
<span class="summary-sig-arg">int tag</span>=<span class="summary-sig-default">0</span>)</span><br />
Create intercommunicator</td>
<td align="right" valign="top">
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr>
<td><span class="summary-sig"><a name="Dup"></a><span class="summary-sig-name">Dup</span>(<span class="summary-sig-arg">self</span>)</span><br />
Duplicate an existing intracommunicator</td>
<td align="right" valign="top">
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
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<tr>
<td><span class="summary-sig"><a name="Exscan"></a><span class="summary-sig-name">Exscan</span>(<span class="summary-sig-arg">self</span>,
<span class="summary-sig-arg">sendbuf</span>,
<span class="summary-sig-arg">recvbuf</span>,
<span class="summary-sig-arg">Op op</span>=<span class="summary-sig-default">SUM</span>)</span><br />
Exclusive Scan</td>
<td align="right" valign="top">
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr>
<td><span class="summary-sig"><a name="Scan"></a><span class="summary-sig-name">Scan</span>(<span class="summary-sig-arg">self</span>,
<span class="summary-sig-arg">sendbuf</span>,
<span class="summary-sig-arg">recvbuf</span>,
<span class="summary-sig-arg">Op op</span>=<span class="summary-sig-default">SUM</span>)</span><br />
Inclusive Scan</td>
<td align="right" valign="top">
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr>
<td><span class="summary-sig"><a name="Spawn"></a><span class="summary-sig-name">Spawn</span>(<span class="summary-sig-arg">self</span>,
<span class="summary-sig-arg">command</span>,
<span class="summary-sig-arg">args</span>=<span class="summary-sig-default">None</span>,
<span class="summary-sig-arg">int maxprocs</span>=<span class="summary-sig-default">1</span>,
<span class="summary-sig-arg">Info info</span>=<span class="summary-sig-default">INFO_NULL</span>,
<span class="summary-sig-arg">int root</span>=<span class="summary-sig-default">0</span>,
<span class="summary-sig-arg">errcodes</span>=<span class="summary-sig-default">None</span>)</span><br />
Spawn instances of a single MPI application</td>
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</td>
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</table>
</td>
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<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr>
<td><span class="summary-sig"><a name="Split"></a><span class="summary-sig-name">Split</span>(<span class="summary-sig-arg">self</span>,
<span class="summary-sig-arg">int color</span>=<span class="summary-sig-default">0</span>,
<span class="summary-sig-arg">int key</span>=<span class="summary-sig-default">0</span>)</span><br />
Split intracommunicator by color and key</td>
<td align="right" valign="top">
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type">a new object with type S, a subtype of T</span>
</td><td class="summary">
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr>
<td><span class="summary-sig"><a href="mpi4py.MPI.Intracomm-class.html#__new__" class="summary-sig-name">__new__</a>(<span class="summary-sig-arg">S</span>,
<span class="summary-sig-arg">...</span>)</span></td>
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</td>
</tr>
</table>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr>
<td><span class="summary-sig"><a name="exscan"></a><span class="summary-sig-name">exscan</span>(<span class="summary-sig-arg">self</span>,
<span class="summary-sig-arg">sendobj</span>=<span class="summary-sig-default">None</span>,
<span class="summary-sig-arg">recvobj</span>=<span class="summary-sig-default">None</span>,
<span class="summary-sig-arg">op</span>=<span class="summary-sig-default">SUM</span>)</span><br />
Exclusive Scan</td>
<td align="right" valign="top">
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td width="15%" align="right" valign="top" class="summary">
<span class="summary-type"> </span>
</td><td class="summary">
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr>
<td><span class="summary-sig"><a name="scan"></a><span class="summary-sig-name">scan</span>(<span class="summary-sig-arg">self</span>,
<span class="summary-sig-arg">sendobj</span>=<span class="summary-sig-default">None</span>,
<span class="summary-sig-arg">recvobj</span>=<span class="summary-sig-default">None</span>,
<span class="summary-sig-arg">op</span>=<span class="summary-sig-default">SUM</span>)</span><br />
Inclusive Scan</td>
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</td>
</tr>
</table>
</td>
</tr>
<tr>
<td colspan="2" class="summary">
<p class="indent-wrapped-lines"><b>Inherited from <code><a href="mpi4py.MPI.Comm-class.html">Comm</a></code></b>:
<code><a href="mpi4py.MPI.Comm-class.html#Abort">Abort</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#Allgather">Allgather</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#Allgatherv">Allgatherv</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#Allreduce">Allreduce</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#Alltoall">Alltoall</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#Alltoallv">Alltoallv</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#Alltoallw">Alltoallw</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#Barrier">Barrier</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#Bcast">Bcast</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#Bsend">Bsend</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#Bsend_init">Bsend_init</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#Call_errhandler">Call_errhandler</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#Clone">Clone</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#Compare">Compare</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#Disconnect">Disconnect</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#Free">Free</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#Gather">Gather</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#Gatherv">Gatherv</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#Get_attr">Get_attr</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#Get_errhandler">Get_errhandler</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#Get_group">Get_group</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#Get_name">Get_name</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#Get_parent">Get_parent</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#Get_rank">Get_rank</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#Get_size">Get_size</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#Get_topology">Get_topology</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#Ibsend">Ibsend</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#Iprobe">Iprobe</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#Irecv">Irecv</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#Irsend">Irsend</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#Is_inter">Is_inter</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#Is_intra">Is_intra</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#Isend">Isend</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#Issend">Issend</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#Join">Join</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#Probe">Probe</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#Recv">Recv</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#Recv_init">Recv_init</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#Reduce">Reduce</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#Reduce_scatter">Reduce_scatter</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#Reduce_scatter_block">Reduce_scatter_block</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#Rsend">Rsend</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#Rsend_init">Rsend_init</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#Scatter">Scatter</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#Scatterv">Scatterv</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#Send">Send</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#Send_init">Send_init</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#Sendrecv">Sendrecv</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#Sendrecv_replace">Sendrecv_replace</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#Set_errhandler">Set_errhandler</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#Set_name">Set_name</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#Ssend">Ssend</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#Ssend_init">Ssend_init</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#__eq__">__eq__</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#__ge__">__ge__</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#__gt__">__gt__</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#__le__">__le__</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#__lt__">__lt__</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#__ne__">__ne__</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#__nonzero__">__nonzero__</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#allgather">allgather</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#allreduce">allreduce</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#alltoall">alltoall</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#barrier">barrier</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#bcast">bcast</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#bsend">bsend</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#f2py">f2py</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#gather">gather</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#ibsend">ibsend</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#isend">isend</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#issend">issend</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#py2f">py2f</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#recv">recv</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#reduce">reduce</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#scatter">scatter</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#send">send</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#sendrecv">sendrecv</a></code>,
<code><a href="mpi4py.MPI.Comm-class.html#ssend">ssend</a></code>
</p>
<p class="indent-wrapped-lines"><b>Inherited from <code>object</code></b>:
<code>__delattr__</code>,
<code>__format__</code>,
<code>__getattribute__</code>,
<code>__hash__</code>,
<code>__init__</code>,
<code>__reduce__</code>,
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<code>__setattr__</code>,
<code>__sizeof__</code>,
<code>__str__</code>,
<code>__subclasshook__</code>
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<code><a href="mpi4py.MPI.Comm-class.html#is_inter">is_inter</a></code>,
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<dl class="fields">
<dt>Returns: a new object with type S, a subtype of T</dt>
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