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<h4 class="subsectionHead"><span class="titlemark">7.9 </span> <a
id="x77-1140007.9"></a>psb_bcast &#8212; Broadcast data</h4>
<div class="verbatim" id="verbatim-69">
call&#x00A0;psb_bcast(ctxt,&#x00A0;dat,&#x00A0;root)
</div>
<!--l. 284--><p class="nopar" >
<!--l. 286--><p class="indent" > This subroutine implements a broadcast operation based on the underlying
communication library.
<dl class="description"><dt class="description">
<span
class="cmbx-10">Type:</span> </dt><dd
class="description">Synchronous.
</dd><dt class="description">
<span
class="cmbx-10">On Entry</span> </dt><dd
class="description">
</dd><dt class="description">
<span
class="cmbx-10">ctxt</span> </dt><dd
class="description">the communication context identifying the virtual parallel machine.<br
class="newline" />Scope: <span
class="cmbx-10">global</span>.<br
class="newline" />Type: <span
class="cmbx-10">required</span>.<br
class="newline" />Intent: <span
class="cmbx-10">in</span>.<br
class="newline" />Specified as: an integer variable.
</dd><dt class="description">
<span
class="cmbx-10">dat</span> </dt><dd
class="description">On the root process, the data to be broadcast.<br
class="newline" />Scope: <span
class="cmbx-10">global</span>.<br
class="newline" />Type: <span
class="cmbx-10">required</span>.<br
class="newline" />Intent: <span
class="cmbx-10">inout</span>.<br
class="newline" />Specified as: an integer, real or complex variable, which may be a scalar,
or a rank 1 or 2 array, or a character or logical variable, which may be
a scalar or rank 1 array. &#x00A0;Type, kind, rank and size must agree on all
processes.
</dd><dt class="description">
<span
class="cmbx-10">root</span> </dt><dd
class="description">Root process holding data to be broadcast.<br
class="newline" />Scope: <span
class="cmbx-10">global</span>.<br
class="newline" />Type: <span
class="cmbx-10">optional</span>.<br
class="newline" />Intent: <span
class="cmbx-10">in</span>.<br
class="newline" />Specified as: an integer value 0 <span
class="cmmi-10">&#x003C;</span>= <span
class="cmmi-10">root &#x003C;</span>= <span
class="cmmi-10">np </span><span
class="cmsy-10">- </span>1, default 0 &#x00A0;</dd></dl>
<!--l. 313--><p class="indent" >
<dl class="description"><dt class="description">
<span
class="cmbx-10">On Return</span> </dt><dd
class="description">
</dd><dt class="description">
<span
class="cmbx-10">dat</span> </dt><dd
class="description">On processes other than root, the data to be broadcast.<br
class="newline" />Scope: <span
class="cmbx-10">global</span>.<br
class="newline" />Type: <span
class="cmbx-10">required</span>.<br
class="newline" />Intent: <span
class="cmbx-10">inout</span>.<br
class="newline" />Specified as: an integer, real or complex variable, which may be a scalar,
or a rank 1 or 2 array, or a character or logical scalar. &#x00A0;Type, kind, rank
and size must agree on all processes.</dd></dl>
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