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@@ -28,16 +28,16 @@ class="cmtt-10">_type</span></a>. Every structure of this
type is associated with a discretization pattern and enables data communications and
other operations that are necessary for implementing the various algorithms of
interest to us.
<!--l. 57--><p class="indent" > The data structure itself <span class="obeylines-h"><span class="verb"><span
class="cmtt-10">psb_desc_type</span></span></span> can be treated as an opaque object
<!--l. 57--><p class="indent" > The data structure itself <span class="lstinline"></span><span
class="cmtt-10">psb_desc_type</span> can be treated as an opaque object
handled via the tools routines of Sec.&#x00A0;<a
href="userhtmlse6.html#x40-770006">6<!--tex4ht:ref: sec:toolsrout --></a> or the query routines detailed below;
nevertheless we include here a description for the curious reader.
<!--l. 63--><p class="indent" > First we describe the <span class="obeylines-h"><span class="verb"><span
class="cmtt-10">psb_indx_map</span></span></span> type. This is a data structure that keeps
<!--l. 63--><p class="indent" > First we describe the <span class="lstinline"></span><span
class="cmtt-10">psb_indx_map</span> type. This is a data structure that keeps
track of a certain number of basic issues such as:
<ul class="itemize1">
<li class="itemize">The value of the communication/MPI context;
<li class="itemize">The value of the communication context;
</li>
<li class="itemize">The number of indices in the index space, i.e. global number of rows and
columns of a sparse matrix;
@@ -168,13 +168,17 @@ class="cmbx-10">bnd</span><span
class="cmbx-10">_elem</span> </dt><dd
class="description">A list of all boundary points, i.e. points that have a connection with
other processes.</dd></dl>
<!--l. 145--><p class="noindent" >The Fortran&#x00A0;2003 declaration for <span class="obeylines-h"><span class="verb"><span
class="cmtt-10">psb_desc_type</span></span></span> structures is as follows: <hr class="figure"><div class="figure"
><a
id="x13-100273"></a>
<!--l. 145--><p class="noindent" >The Fortran&#x00A0;2003 declaration for <span class="lstinline"></span><span
class="cmtt-10">psb_desc_type</span> structures is as follows:
<!--l. 147--><p class="indent" > <a
id="x13-10027r1"></a><hr class="float"><div class="float"
>
<div class="center"
>
<!--l. 149--><p class="noindent" >
<!--l. 162--><p class="noindent" >
<div class="minipage"><div class="verbatim" id="verbatim-1">
type&#x00A0;psb_desc_type
&#x00A0;<br />&#x00A0;&#x00A0;&#x00A0;&#x00A0;class(psb_indx_map),&#x00A0;allocatable&#x00A0;::&#x00A0;indxmap
@@ -186,13 +190,16 @@ type&#x00A0;psb_desc_type
&#x00A0;<br />&#x00A0;&#x00A0;&#x00A0;&#x00A0;integer,&#x00A0;allocatable&#x00A0;&#x00A0;::&#x00A0;bnd_elem(:)
&#x00A0;<br />end&#x00A0;type&#x00A0;psb_desc_type
</div>
<!--l. 161--><p class="nopar" ></div></div>
<!--l. 174--><p class="nopar" ></div></div>
<br /> <div class="caption"
><span class="id">Figure&#x00A0;3: </span><span
><span class="id">Listing 1: </span><span
class="content">The PSBLAS defined data type that contains the communication
descriptor.</span></div><!--tex4ht:label?: x13-100273 -->
<!--l. 171--><p class="indent" > </div><hr class="endfigure">
<!--l. 172--><p class="indent" > A communication descriptor associated with a sparse matrix has a state, which
descriptor.</span></div><!--tex4ht:label?: x13-10027r1 -->
</div><hr class="endfloat" />
<!--l. 186--><p class="indent" > A communication descriptor associated with a sparse matrix has a state, which
can take the following values:
<dl class="description"><dt class="description">
<span
@@ -200,19 +207,15 @@ class="cmbx-10">Build:</span> </dt><dd
class="description">State entered after the first allocation, and before the first assembly; in
this state it is possible to add communication requirements among different
processes.
</dd><dt class="description">
<span
class="cmbx-10">Assembled:</span> </dt><dd
class="description">State entered after the assembly; computations using the
associated sparse matrix, such as matrix-vector products, are only possible
in this state.</dd></dl>
<!--l. 183--><p class="noindent" >
<h5 class="subsubsectionHead"><span class="titlemark">3.1.1 </span> <a
id="x13-110003.1.1"></a>Descriptor Methods</h5>
<!--l. 185--><p class="noindent" >
<!--l. 199--><p class="noindent" >
<h5 class="subsubsectionHead"><span class="titlemark">3.1.2 </span> <a
id="x13-120003.1.2"></a>get_local_rows &#8212; Get number of local rows</h5>
@@ -221,8 +224,8 @@ class="description">State entered after the assembly; computations using
<div class="verbatim" id="verbatim-2">
nr&#x00A0;=&#x00A0;desc%get_local_rows()
</div>
<!--l. 189--><p class="nopar" >
<!--l. 191--><p class="indent" >
<!--l. 203--><p class="nopar" >
<!--l. 205--><p class="indent" >
<dl class="description"><dt class="description">
<span
class="cmbx-10">Type:</span> </dt><dd
@@ -238,7 +241,7 @@ class="description">the communication descriptor.<br
class="newline" />Scope: <span
class="cmbx-10">local</span>.<br
class="newline" /></dd></dl>
<!--l. 201--><p class="indent" >
<!--l. 215--><p class="indent" >
<dl class="description"><dt class="description">
<span
class="cmbx-10">On Return</span> </dt><dd
@@ -258,7 +261,7 @@ src="cmsy10-42.png" alt="B" class="10x-x-42" /></span><sub><span
class="cmmi-7">i</span></sub><span
class="cmsy-10">|</span>. The returned
value is specific to the calling process.</dd></dl>
<!--l. 210--><p class="noindent" >
<!--l. 224--><p class="noindent" >
<h5 class="subsubsectionHead"><span class="titlemark">3.1.3 </span> <a
id="x13-130003.1.3"></a>get_local_cols &#8212; Get number of local cols</h5>
@@ -267,8 +270,8 @@ class="cmsy-10">|</span>. The returned
<div class="verbatim" id="verbatim-3">
nc&#x00A0;=&#x00A0;desc%get_local_cols()
</div>
<!--l. 214--><p class="nopar" >
<!--l. 216--><p class="indent" >
<!--l. 228--><p class="nopar" >
<!--l. 230--><p class="indent" >
<dl class="description"><dt class="description">
<span
class="cmbx-10">Type:</span> </dt><dd
@@ -284,7 +287,7 @@ class="description">the communication descriptor.<br
class="newline" />Scope: <span
class="cmbx-10">local</span>.<br
class="newline" /></dd></dl>
<!--l. 226--><p class="indent" >
<!--l. 240--><p class="indent" >
<dl class="description"><dt class="description">
<span
class="cmbx-10">On Return</span> </dt><dd
@@ -309,7 +312,7 @@ src="cmsy10-48.png" alt="H" class="10x-x-48" /></span><sub><span
class="cmmi-7">i</span></sub><span
class="cmsy-10">|</span>. The returned value is specific to the
calling process.</dd></dl>
<!--l. 236--><p class="noindent" >
<!--l. 250--><p class="noindent" >
<h5 class="subsubsectionHead"><span class="titlemark">3.1.4 </span> <a
id="x13-140003.1.4"></a>get_global_rows &#8212; Get number of global rows</h5>
@@ -318,8 +321,8 @@ class="cmsy-10">|</span>. The returned value is specific to the
<div class="verbatim" id="verbatim-4">
nr&#x00A0;=&#x00A0;desc%get_global_rows()
</div>
<!--l. 240--><p class="nopar" >
<!--l. 242--><p class="indent" >
<!--l. 254--><p class="nopar" >
<!--l. 256--><p class="indent" >
<dl class="description"><dt class="description">
<span
class="cmbx-10">Type:</span> </dt><dd
@@ -335,7 +338,7 @@ class="description">the communication descriptor.<br
class="newline" />Scope: <span
class="cmbx-10">local</span>.<br
class="newline" /></dd></dl>
<!--l. 252--><p class="indent" >
<!--l. 266--><p class="indent" >
<dl class="description"><dt class="description">
<span
class="cmbx-10">On Return</span> </dt><dd
@@ -345,7 +348,7 @@ class="description">
class="cmbx-10">Function value</span> </dt><dd
class="description">The number of global rows, i.e. the size of the global index
space.</dd></dl>
<!--l. 258--><p class="noindent" >
<!--l. 272--><p class="noindent" >
<h5 class="subsubsectionHead"><span class="titlemark">3.1.5 </span> <a
id="x13-150003.1.5"></a>get_global_cols &#8212; Get number of global cols</h5>
@@ -354,8 +357,8 @@ class="description">The number of global rows, i.e. the size of the global index
<div class="verbatim" id="verbatim-5">
nr&#x00A0;=&#x00A0;desc%get_global_cols()
</div>
<!--l. 262--><p class="nopar" >
<!--l. 264--><p class="indent" >
<!--l. 276--><p class="nopar" >
<!--l. 278--><p class="indent" >
<dl class="description"><dt class="description">
<span
class="cmbx-10">Type:</span> </dt><dd
@@ -371,7 +374,7 @@ class="description">the communication descriptor.<br
class="newline" />Scope: <span
class="cmbx-10">local</span>.<br
class="newline" /></dd></dl>
<!--l. 274--><p class="indent" >
<!--l. 288--><p class="indent" >
<dl class="description"><dt class="description">
<span
class="cmbx-10">On Return</span> </dt><dd
@@ -381,7 +384,7 @@ class="description">
class="cmbx-10">Function value</span> </dt><dd
class="description">The number of global cols; usually this is equal to the number
of global rows.</dd></dl>
<!--l. 281--><p class="noindent" >
<!--l. 295--><p class="noindent" >
<h5 class="subsubsectionHead"><span class="titlemark">3.1.6 </span> <a
id="x13-160003.1.6"></a>get_global_indices &#8212; Get vector of global indices</h5>
@@ -390,8 +393,8 @@ class="description">The number of global cols; usually this is equal to the numb
<div class="verbatim" id="verbatim-6">
myidx&#x00A0;=&#x00A0;desc%get_global_indices([owned])
</div>
<!--l. 285--><p class="nopar" >
<!--l. 287--><p class="indent" >
<!--l. 299--><p class="nopar" >
<!--l. 301--><p class="indent" >
<dl class="description"><dt class="description">
<span
class="cmbx-10">Type:</span> </dt><dd
@@ -412,16 +415,24 @@ class="newline" />
</dd><dt class="description">
<span
class="cmbx-10">owned</span> </dt><dd
class="description">Choose if you only want owned indices (<span class="obeylines-h"><span class="verb"><span
class="cmtt-10">owned=.true.</span></span></span>) or also halo
indices (<span class="obeylines-h"><span class="verb"><span
class="cmtt-10">owned=.false.</span></span></span>). Scope: <span
class="description">Choose if you only want owned indices (<span class="lstinline"></span><span
class="cmtt-10">owned</span><span
class="cmtt-10">=.</span><span
class="cmtt-10">true</span><span
class="cmtt-10">.</span>) or also halo
indices (<span class="lstinline"></span><span
class="cmtt-10">owned</span><span
class="cmtt-10">=.</span><span
class="cmtt-10">false</span><span
class="cmtt-10">.</span>). Scope: <span
class="cmbx-10">local</span>.<br
class="newline" />Type: <span
class="cmbx-10">optional</span>; default: <span class="obeylines-h"><span class="verb"><span
class="cmtt-10">.true.</span></span></span>.<br
class="cmbx-10">optional</span>; default: <span class="lstinline"></span><span
class="cmtt-10">.</span><span
class="cmtt-10">true</span><span
class="cmtt-10">.</span>.<br
class="newline" /></dd></dl>
<!--l. 301--><p class="indent" >
<!--l. 315--><p class="indent" >
<dl class="description"><dt class="description">
<span
class="cmbx-10">On Return</span> </dt><dd
@@ -430,19 +441,19 @@ class="description">
<span
class="cmbx-10">Function value</span> </dt><dd
class="description">The global indices, returned as an allocatable integer array of
kind <span class="obeylines-h"><span class="verb"><span
class="cmtt-10">psb_lpk_</span></span></span> and rank 1.</dd></dl>
<!--l. 309--><p class="noindent" >
kind <span class="lstinline"></span><span
class="cmtt-10">psb_lpk_</span> and rank 1.</dd></dl>
<!--l. 323--><p class="noindent" >
<h5 class="subsubsectionHead"><span class="titlemark">3.1.7 </span> <a
id="x13-170003.1.7"></a>get_context &#8212; Get communication context</h5>
<div class="verbatim" id="verbatim-7">
ictxt&#x00A0;=&#x00A0;desc%get_context()
ctxt&#x00A0;=&#x00A0;desc%get_context()
</div>
<!--l. 313--><p class="nopar" >
<!--l. 315--><p class="indent" >
<!--l. 327--><p class="nopar" >
<!--l. 329--><p class="indent" >
<dl class="description"><dt class="description">
<span
class="cmbx-10">Type:</span> </dt><dd
@@ -458,7 +469,7 @@ class="description">the communication descriptor.<br
class="newline" />Scope: <span
class="cmbx-10">local</span>.<br
class="newline" /></dd></dl>
<!--l. 325--><p class="indent" >
<!--l. 339--><p class="indent" >
<dl class="description"><dt class="description">
<span
class="cmbx-10">On Return</span> </dt><dd
@@ -467,7 +478,7 @@ class="description">
<span
class="cmbx-10">Function value</span> </dt><dd
class="description">The communication context.</dd></dl>
<!--l. 330--><p class="noindent" >
<!--l. 344--><p class="noindent" >
<h5 class="subsubsectionHead"><span class="titlemark">3.1.8 </span> <a
id="x13-180003.1.8"></a>Clone &#8212; clone current object</h5>
@@ -476,8 +487,8 @@ class="description">The communication context.</dd></dl>
<div class="verbatim" id="verbatim-8">
call&#x00A0;&#x00A0;desc%clone(descout,info)
</div>
<!--l. 334--><p class="nopar" >
<!--l. 336--><p class="indent" >
<!--l. 348--><p class="nopar" >
<!--l. 350--><p class="indent" >
<dl class="description"><dt class="description">
<span
class="cmbx-10">Type:</span> </dt><dd
@@ -493,7 +504,7 @@ class="description">the communication descriptor.<br
class="newline" />Scope: <span
class="cmbx-10">local</span>.<br
class="newline" /></dd></dl>
<!--l. 346--><p class="indent" >
<!--l. 360--><p class="indent" >
<dl class="description"><dt class="description">
<span
class="cmbx-10">On Return</span> </dt><dd
@@ -506,7 +517,7 @@ class="description">A copy of the input object.
<span
class="cmbx-10">info</span> </dt><dd
class="description">Return code.</dd></dl>
<!--l. 353--><p class="noindent" >
<!--l. 367--><p class="noindent" >
<h5 class="subsubsectionHead"><span class="titlemark">3.1.9 </span> <a
id="x13-190003.1.9"></a>CNV &#8212; convert internal storage format</h5>
@@ -515,8 +526,8 @@ class="description">Return code.</dd></dl>
<div class="verbatim" id="verbatim-9">
call&#x00A0;&#x00A0;desc%cnv(mold)
</div>
<!--l. 357--><p class="nopar" >
<!--l. 359--><p class="indent" >
<!--l. 371--><p class="nopar" >
<!--l. 373--><p class="indent" >
<dl class="description"><dt class="description">
<span
class="cmbx-10">Type:</span> </dt><dd
@@ -546,10 +557,10 @@ class="cmtt-10">_T</span><span
class="cmtt-10">_base</span><span
class="cmtt-10">_vect</span><span
class="cmtt-10">_type</span></a>.</dd></dl>
<!--l. 370--><p class="noindent" >The <span class="obeylines-h"><span class="verb"><span
class="cmtt-10">mold</span></span></span> arguments may be employed to interface with special devices, such as GPUs
<!--l. 384--><p class="noindent" >The <span class="lstinline"></span><span
class="cmtt-10">mold</span> arguments may be employed to interface with special devices, such as GPUs
and other accelerators.
<!--l. 377--><p class="noindent" >
<!--l. 391--><p class="noindent" >
<h5 class="subsubsectionHead"><span class="titlemark">3.1.10 </span> <a
id="x13-200003.1.10"></a>psb_cd_get_large_threshold &#8212; Get threshold for index mapping
switch</h5>
@@ -559,8 +570,8 @@ switch</h5>
<div class="verbatim" id="verbatim-10">
ith&#x00A0;=&#x00A0;psb_cd_get_large_threshold()
</div>
<!--l. 381--><p class="nopar" >
<!--l. 383--><p class="indent" >
<!--l. 395--><p class="nopar" >
<!--l. 397--><p class="indent" >
<dl class="description"><dt class="description">
<span
class="cmbx-10">Type:</span> </dt><dd
@@ -574,7 +585,7 @@ class="description">
class="cmbx-10">Function value</span> </dt><dd
class="description">The current value for the size threshold.
</dd></dl>
<!--l. 393--><p class="noindent" >
<!--l. 407--><p class="noindent" >
<h5 class="subsubsectionHead"><span class="titlemark">3.1.11 </span> <a
id="x13-210003.1.11"></a>psb_cd_set_large_threshold &#8212; Set threshold for index mapping
switch</h5>
@@ -584,8 +595,8 @@ switch</h5>
<div class="verbatim" id="verbatim-11">
call&#x00A0;psb_cd_set_large_threshold(ith)
</div>
<!--l. 398--><p class="nopar" >
<!--l. 400--><p class="indent" >
<!--l. 412--><p class="nopar" >
<!--l. 414--><p class="indent" >
<dl class="description"><dt class="description">
<span
class="cmbx-10">Type:</span> </dt><dd
@@ -605,12 +616,12 @@ class="cmbx-10">required</span>.<br
class="newline" />Intent: <span
class="cmbx-10">in</span>.<br
class="newline" />Specified as: an integer value greater than zero.</dd></dl>
<!--l. 409--><p class="noindent" >Note: the threshold value is only queried by the library at the time a call to <span class="obeylines-h"><span class="verb"><span
class="cmtt-10">psb_cdall</span></span></span>
<!--l. 423--><p class="noindent" >Note: the threshold value is only queried by the library at the time a call to <span class="lstinline"></span><span
class="cmtt-10">psb_cdall</span>
is executed, therefore changing the threshold has no effect on communication
descriptors that have already been initialized. Moreover the threshold must have the
same value on all processes.
<!--l. 416--><p class="noindent" >
<!--l. 430--><p class="noindent" >
<h5 class="subsubsectionHead"><span class="titlemark">3.1.12 </span> <a
id="x13-220003.1.12"></a>get_p_adjcncy &#8212; Get process adjacency list</h5>
@@ -619,8 +630,8 @@ same value on all processes.
<div class="verbatim" id="verbatim-12">
list&#x00A0;=&#x00A0;&#x00A0;desc%get_p_adjcncy()
</div>
<!--l. 421--><p class="nopar" >
<!--l. 423--><p class="indent" >
<!--l. 435--><p class="nopar" >
<!--l. 437--><p class="indent" >
<dl class="description"><dt class="description">
<span
class="cmbx-10">Type:</span> </dt><dd
@@ -635,7 +646,7 @@ class="cmbx-10">Function value</span> </dt><dd
class="description">The current list of adjacent processes, i.e. processes with
which the current one has to exchange halo data.
</dd></dl>
<!--l. 432--><p class="noindent" >
<!--l. 446--><p class="noindent" >
<h5 class="subsubsectionHead"><span class="titlemark">3.1.13 </span> <a
id="x13-230003.1.13"></a>set_p_adjcncy &#8212; Set process adjacency list</h5>
@@ -644,8 +655,8 @@ class="description">The current list of adjacent processes, i.e. processe
<div class="verbatim" id="verbatim-13">
call&#x00A0;desc%set_p_adjcncy(list)
</div>
<!--l. 437--><p class="nopar" >
<!--l. 439--><p class="indent" >
<!--l. 451--><p class="nopar" >
<!--l. 453--><p class="indent" >
<dl class="description"><dt class="description">
<span
class="cmbx-10">Type:</span> </dt><dd
@@ -664,16 +675,16 @@ class="newline" />Type: <span
class="cmbx-10">required</span>.<br
class="newline" />Intent: <span
class="cmbx-10">in</span>.<br
class="newline" />Specified as: a one-dimensional array of integers of kind <span class="obeylines-h"><span class="verb"><span
class="cmtt-10">psb_ipk_</span></span></span>.</dd></dl>
<!--l. 448--><p class="noindent" >Note: this method can be called after a call to <span class="obeylines-h"><span class="verb"><span
class="cmtt-10">psb_cdall</span></span></span> and before a call to
<span class="obeylines-h"><span class="verb"><span
class="cmtt-10">psb_cdasb</span></span></span>. The user is specifying here some knowledge about which processes are
class="newline" />Specified as: a one-dimensional array of integers of kind <span class="lstinline"></span><span
class="cmtt-10">psb_ipk_</span>.</dd></dl>
<!--l. 462--><p class="noindent" >Note: this method can be called after a call to <span class="lstinline"></span><span
class="cmtt-10">psb_cdall</span> and before a call to
<span class="lstinline"></span><span
class="cmtt-10">psb_cdasb</span>. The user is specifying here some knowledge about which processes are
topological neighbours of the current process. The availability of this information
may speed up the execution of the assembly call <span class="obeylines-h"><span class="verb"><span
class="cmtt-10">psb_cdasb</span></span></span>.
<!--l. 455--><p class="noindent" >
may speed up the execution of the assembly call <span class="lstinline"></span><span
class="cmtt-10">psb_cdasb</span>.
<!--l. 469--><p class="noindent" >
<h5 class="subsubsectionHead"><span class="titlemark">3.1.14 </span> <a
id="x13-240003.1.14"></a>fnd_owner &#8212; Find the owner process of a set of indices</h5>
@@ -682,8 +693,8 @@ class="cmtt-10">psb_cdasb</span></span></span>.
<div class="verbatim" id="verbatim-14">
call&#x00A0;desc%fnd_owner(idx,iprc,info)
</div>
<!--l. 460--><p class="nopar" >
<!--l. 462--><p class="indent" >
<!--l. 474--><p class="nopar" >
<!--l. 476--><p class="indent" >
<dl class="description"><dt class="description">
<span
class="cmbx-10">Type:</span> </dt><dd
@@ -702,8 +713,8 @@ class="newline" />Type: <span
class="cmbx-10">required</span>.<br
class="newline" />Intent: <span
class="cmbx-10">in</span>.<br
class="newline" />Specified as: a one-dimensional array of integers of kind <span class="obeylines-h"><span class="verb"><span
class="cmtt-10">psb_lpk_</span></span></span>.
class="newline" />Specified as: a one-dimensional array of integers of kind <span class="lstinline"></span><span
class="cmtt-10">psb_lpk_</span>.
</dd><dt class="description">
<span
class="cmbx-10">On Return</span> </dt><dd
@@ -711,8 +722,8 @@ class="description">
</dd><dt class="description">
<span
class="cmbx-10">iprc</span> </dt><dd
class="description">the list of processes owning the indices in <span class="obeylines-h"><span class="verb"><span
class="cmtt-10">idx</span></span></span>.<br
class="description">the list of processes owning the indices in <span class="lstinline"></span><span
class="cmtt-10">idx</span>.<br
class="newline" />Scope: <span
class="cmbx-10">local</span>.<br
class="newline" />Type: <span
@@ -720,16 +731,16 @@ class="cmbx-10">required</span>.<br
class="newline" />Intent: <span
class="cmbx-10">in</span>.<br
class="newline" />Specified as: an allocatable one-dimensional array of integers of kind
<span class="obeylines-h"><span class="verb"><span
class="cmtt-10">psb_ipk_</span></span></span>.</dd></dl>
<!--l. 477--><p class="noindent" >Note: this method may or may not actually require communications, depending on the
<span class="lstinline"></span><span
class="cmtt-10">psb_ipk_</span>.</dd></dl>
<!--l. 491--><p class="noindent" >Note: this method may or may not actually require communications, depending on the
exact internal data storage; given that the choice of storage may be altered by
runtime parameters, it is necessary for safety that this method is called by all
processes.
<!--l. 485--><p class="noindent" >
<!--l. 499--><p class="noindent" >
<h5 class="subsubsectionHead"><span class="titlemark">3.1.15 </span> <a
id="x13-250003.1.15"></a>Named Constants</h5>
<!--l. 487--><p class="noindent" >
<!--l. 501--><p class="noindent" >
<dl class="description"><dt class="description">
<span
class="cmbx-10">psb</span><span
@@ -775,40 +786,40 @@ class="cmbx-10">psb</span><span
class="cmbx-10">_comm</span><span
class="cmbx-10">_halo</span><span
class="cmbx-10">_</span> </dt><dd
class="description">Exchange data based on the <span class="obeylines-h"><span class="verb"><span
class="cmtt-10">halo_index</span></span></span> list;
class="description">Exchange data based on the <span class="lstinline"></span><span
class="cmtt-10">halo_index</span> list;
</dd><dt class="description">
<span
class="cmbx-10">psb</span><span
class="cmbx-10">_comm</span><span
class="cmbx-10">_ext</span><span
class="cmbx-10">_</span> </dt><dd
class="description">Exchange data based on the <span class="obeylines-h"><span class="verb"><span
class="cmtt-10">ext_index</span></span></span> list;
class="description">Exchange data based on the <span class="lstinline"></span><span
class="cmtt-10">ext_index</span> list;
</dd><dt class="description">
<span
class="cmbx-10">psb</span><span
class="cmbx-10">_comm</span><span
class="cmbx-10">_ovr</span><span
class="cmbx-10">_</span> </dt><dd
class="description">Exchange data based on the <span class="obeylines-h"><span class="verb"><span
class="cmtt-10">ovrlap_index</span></span></span> list;
class="description">Exchange data based on the <span class="lstinline"></span><span
class="cmtt-10">ovrlap_index</span> list;
</dd><dt class="description">
<span
class="cmbx-10">psb</span><span
class="cmbx-10">_comm</span><span
class="cmbx-10">_mov</span><span
class="cmbx-10">_</span> </dt><dd
class="description">Exchange data based on the <span class="obeylines-h"><span class="verb"><span
class="cmtt-10">ovr_mst_idx</span></span></span> list;
class="description">Exchange data based on the <span class="lstinline"></span><span
class="cmtt-10">ovr_mst_idx</span> list;
</dd></dl>
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