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125 lines
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125 lines
5.0 KiB
HTML
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<head><title>psb_rcv — Receive data</title>
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<h4 class="subsectionHead"><span class="titlemark">7.17 </span> <a
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id="x85-1220007.17"></a>psb_rcv — Receive data</h4>
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<pre class="verbatim" id="verbatim-84">
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call psb_rcv(ctxt, dat, src, m)
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</pre>
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<!--l. 1003--><p class="nopar" >
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<!--l. 1005--><p class="indent" > This subroutine receives a packet of data to a destination.
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<dl class="description"><dt class="description">
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<span
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class="cmbx-10">Type:</span> </dt><dd
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class="description">Synchronous: see usage notes.
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</dd><dt class="description">
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<span
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class="cmbx-10">On Entry</span> </dt><dd
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class="description">
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</dd><dt class="description">
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<span
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class="cmbx-10">ctxt</span> </dt><dd
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class="description">the communication context identifying the virtual parallel machine.<br
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class="newline" />Scope: <span
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class="cmbx-10">global</span>.<br
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class="newline" />Type: <span
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class="cmbx-10">required</span>.<br
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class="newline" />Intent: <span
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class="cmbx-10">in</span>.<br
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class="newline" />Specified as: an integer variable.
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</dd><dt class="description">
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<span
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class="cmbx-10">src</span> </dt><dd
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class="description">Source process.<br
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class="newline" />Scope: <span
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class="cmbx-10">global</span>.<br
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class="newline" />Type: <span
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class="cmbx-10">required</span>.<br
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class="newline" />Intent: <span
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class="cmbx-10">in</span>.<br
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class="newline" />Specified as: an integer value 0 <span
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class="cmmi-10"><</span>= <span
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class="cmmi-10">src <</span>= <span
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class="cmmi-10">np </span><span
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class="cmsy-10">- </span>1. <br
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class="newline" />
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</dd><dt class="description">
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<span
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class="cmbx-10">m</span> </dt><dd
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class="description">Number of rows.<br
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class="newline" />Scope: <span
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class="cmbx-10">global</span>.<br
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class="newline" />Type: <span
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class="cmbx-10">Optional</span>.<br
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class="newline" />Intent: <span
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class="cmbx-10">in</span>.<br
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class="newline" />Specified as: an integer value 0 <span
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class="cmmi-10"><</span>= <span
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class="cmmi-10">m <</span>= <span
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class="cmmi-10">size</span>(<span
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class="cmmi-10">dat,</span>1). <br
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class="newline" />When <span
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class="cmmi-10">dat </span>is a rank 2 array, specifies the number of rows to be sent
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independently of the leading dimension <span
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class="cmmi-10">size</span>(<span
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class="cmmi-10">dat,</span>1); must have the same
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value on sending and receiving processes.</dd></dl>
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<!--l. 1031--><p class="indent" >
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<dl class="description"><dt class="description">
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<span
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class="cmbx-10">On Return</span> </dt><dd
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class="description">
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</dd><dt class="description">
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<span
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class="cmbx-10">dat</span> </dt><dd
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class="description">The data to be received.<br
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class="newline" />Scope: <span
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class="cmbx-10">local</span>.<br
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class="newline" />Type: <span
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class="cmbx-10">required</span>.<br
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class="newline" />Intent: <span
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class="cmbx-10">inout</span>.<br
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class="newline" />Specified as: an integer, real or complex variable, which may be a scalar,
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or a rank 1 or 2 array, or a character or logical scalar.  Type, kind and
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rank must agree on sender and receiver process; if <span
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class="cmmi-10">m </span>is not specified, size
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must agree as well.</dd></dl>
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<!--l. 1043--><p class="noindent" ><span
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class="cmbx-12">Notes</span>
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<ol class="enumerate1" >
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<li
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class="enumerate" id="x85-122002x1">This subroutine implies a synchronization, but only between the calling
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process and the source process <span
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class="cmmi-10">src</span>.</li></ol>
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