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<h1>Readme and Release notes for release 5.1.1.9 Parallel Environment (PE) 5.1.1.9 PE-5.1.1.9-power-Linux Readme</h1>
<p>
<b>Readme file for:</b>PE-5.1.1.9-power-Linux<br>
<b>Product/Component Release:</b>5.1.1.9<br>
<b>Update Name:</b>PE-5.1.1.9-power-Linux<br>
<b>Fix ID:</b>PE-5.1.1.9-power-Linux<br>
<b>Publication Date:</b>13 December 2011<br>
<b>Last modified date:</b>13 December 2011<br>
<br>
<b>Online version of the readme file:</b><a href="http://www-01.ibm.com/support/docview.wss?rs=0&uid=isg400000864">http://www-01.ibm.com/support/docview.wss?rs=0&amp;uid=isg400000864</a>
<br>
<b>Important</b>: The most current version of the readme file can always be found online.<br>
</p>
<font size="4"><b>Contents</b></font>
<br>
<br>
<a href="#Download location" class="fbox">Download location</a>
<br>
<a href="#Prerequisites and co-requisites" class="fbox">Prerequisites and co-requisites</a>
<br>
<br>
<b>Installation information</b>
<br>
<br>
<a href="#Additional information" class="fbox">Additional information</a>
<br>
<a href="#Copyright and trademark information" class="fbox">Copyright and trademark information</a>
<br>
<br>
<! ##################################################################################### --> <br>
<br>
<a name="Download location"><font size="4"><b>Download location</b></font></a>
<br>
<br>
<p>Below is a list of components, platforms, and file names that apply to this Readme file.<br>
<br>
</p>
<span id="imageElementLinux" style="position:relative; display:none;"><a onclick="return _dSectionExpand(&quot;imageElementLinux&quot;,&quot;textElementLinux&quot;);">
                
				<img src="http://www-01.ibm.com/support/docview.wss?uid=swg24018266&aid=2" border="0" alt="" ></img>
			     <b>Fix Download for Linux</b></a></span><span id="textElementLinux" style="position:relative"><a onclick="return _dSectionCollapse(&quot;imageElementLinux&quot;,&quot;textElementLinux&quot;);">
                
				<img src="http://www-01.ibm.com/support/docview.wss?uid=swg24018266&aid=3" border="0" alt="" ></img>
			     <b>Fix Download for Linux</b></a>
<table cellspacing="0" cellpadding="0" width="600" style="background-color:FFFFFF" bordercolor="000000" border="1">
<br>
<tr>
<td><b>Product/Component Name:</b></td><td><b>Platform:</b></td><td><b>Fix:</b></td>
</tr>
<tr>
<td>Parallel Environment (PE)</td><td>Linux pSeries RHEL<BR/>Linux pSeries SLES<BR/></td><td><a href="http://www.ibm.com/support/fixcentral/swg/quickorder?product=ibm/power/IBM+Parallel+Environment&function=fixid&fixids=PE-5.1.1.9-power-Linux">PE-5.1.1.9-power-Linux</a></td>
</tr>
</table>
</span>
<br>
<br>
<br>
<br>
<br>
<a name="Prerequisites and co-requisites"><font size="4"><b>Prerequisites and co-requisites</b></font></a>
<br>
<br>
None
	  <br>
<br>
<a name="Installation information"><font size="4"><b>Installation information</b></font></a>
<br>
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<li>
<a class="ibm-twisty-trigger" href="#toggle"><img alt="-" src="//www.ibm.com/i/c.gif" /></a>
<span class="ibm-twisty-head"><b>Installation Notes</b>
</span>
<div class="ibm-twisty-body">

<p>Please refer to the "IBM Parallel Environment for AIX and Linux Installation
Guide" for details.</p>
 
<ol>
 
<li> By installing this service release you will have the complete IBM
   Parallel Environment for Linux product.<br><br>
 
   However, if you are installing IBM Parallel Environment for Linux for the
   first time, you will need to get the IBM PE License RPM from the IBM PE5100
   release media.  You will have to install the license RPM by invoking the
   'rpm -i' command and accept the license agreement by running the license
   acceptance script -- follow the on line instruction.
<br><br>
 
   After accepting the license agreement type the this command to install
   the IBM PE product:<br><br>
 
        <b>pe_install.sh [-ip_only n]</b><br><br>
 
<b>Note:</b> You will use the pe_install.sh script's "-ip_only n" option if
         you want to use an InfiniBand adapter on IBM System p with
         SuSE 10, SuSE 11 or RedHat 5 Linux distros.
<br>
<br>
</li>

<li>If you are upgrading from IBM Parallel Environment for Linux V5.1.1.5 to V5.1.1.9, you will only need to install the PE component since the LAPI
component has not changed, type:
<br><br>
 <b>pe_install.sh -install_op U -fix_level pe-5.1.1.9-s009a [-ip_only n]</b><br><br>
</li>
<li>If you are upgrading from IBM Parallel Environment for Linux V5.1.1.0
to V5.1.1.4 type:
<br><br>
        <b>pe_install.sh -install_op U [-ip_only n]</b><br><br> 
</li>
<li> If you are migrating from an older version of the IBM Parallel Environment
   for Linux, for example IBM PE V4.3.2.x, you also need to upgrade to the
   PE510 license.  IBM PE51 will not work with old IBM PE (V43 or earlier)
   licenses.<br><br>
 
   Use the 'rpm -U' command to upgrade the license RPM and after accepting
   the license agreement type the this command to install the IBM PE product:<br><br> 
 
<b>pe_install.sh -install_op U [-ip_only n]</b><br><br>
</li>
 
<li> To install either the HPCT or PDB select the proper RPM file for the
   platform and invoke the 'rpm' command.
</li>
</ol>


</div>
</li>
</ul>
</div>
</div>
<br>
<br>
<a name="Additional information"><font size="4"><b>Additional information</b></font></a>
<br>
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<span class="ibm-twisty-head"><b>Description</b>
</span>
<div class="ibm-twisty-body">

<p>This release media contains all RPM images of the IBM Parallel Environment
for Linux V5.1.1 PTF9 (PE5.1.1.9).</p>

<p>IBM PE5119 supports SUSE Linux Enterprise Server 10, 11 and Red Hat Enterprise
Linux AS release 5.2 on both IBM System p and System x.</p>

<p>InfiniBand network support is only available on System p.</p> 

<p>This release rolls up all fixes that has gone into previous PE releases.</p>

<p>The IBM PE5.1.1.9 components are:</p>
<ul class="ibm-bullet-list ibm-no-links">
 <li>IBM PE version: 5.1.1.9-s009a</li>
 <li>IBM LAPI version: 3.1.3.3-s003a</li>
 <li>IBM High Performance Computing (HPC) Toolkit version: 5.1.1-0</li>
 <li>IBM Parallel Debugger (PDB) version: 5.1.1-0</li>
</ul>

<p>This media also contains:</p>
<div class=ibm-indent>

<p>IBM PE official README file:<br/>
      poe.README</p>

<p>An install script -- pe_install.sh:<br/>
      This script checks your platform and Linux distro and picks the
      correct set of PE and LAPI RPMs for you.
      The script will not install the HPCT and PDB RPMs (see below).
</p>

<p>IBM PE and LAPI RPMs.</p>

<p>HPCT RPMs:<br>
The HPCT directory contains all HPCT RPMs.

</p>

<p>PDB Parallel Debugger Frontend:<br/>
      The PDB directory contains all PDB RPMs.</p>

</div>
</li>
</ul>
</div>
</div>

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<li>
<a class="ibm-twisty-trigger" href="#toggle"><img alt="-" src="//www.ibm.com/i/c.gif" /></a>
<span class="ibm-twisty-head"><b>Package contents</b>
</span>
<div class="ibm-twisty-body">

<p>Parallel Environment RPMs:</p>
<p>
src/ppe/poe/poe.README<br>
src/ppe/poe/install.linux/bin/pe_install.sh
</p>

<p>PE RPMs<br>
ppe_ppc_base_32bit_sles1100-5.1.1.9-s009a.ppc.rpm<br>
ppe_ppc_64bit_sles1100-5.1.1.9-s009a.ppc64.rpm<br>
ppe_ppc_base_32bit_sles1000-5.1.1.9-s009a.ppc.rpm<br>
ppe_ppc_64bit_sles1000-5.1.1.9-s009a.ppc64.rpm<br>
ppe_ppc_base_32bit_rh500-5.1.1.9-s009a.ppc.rpm<br>
ppe_ppc_64bit_rh500-5.1.1.9-s009a.ppc64.rpm<br>
ppe_x86_base_32bit_sles1100-5.1.1.9-s009a.i386.rpm<br>
ppe_x86_64bit_sles1100-5.1.1.9-s009a.x86_64.rpm<br>
ppe_x86_base_32bit_sles1000-5.1.1.9-s009a.i386.rpm<br>
ppe_x86_64bit_sles1000-5.1.1.9-s009a.x86_64.rpm<br>
ppe_x86_base_32bit_rh500-5.1.1.9-s009a.i386.rpm<br>
ppe_x86_64bit_rh500-5.1.1.9-s009a.x86_64.rpm<br>
<br>
</p>

<p>LAPI RPMs:<br>
lapi_ppc_32bit_base_IP_sles1100-3.1.3.3-s003a.ppc.rpm<br>
lapi_ppc_32bit_US_sles1100-3.1.3.3-s003a.ppc.rpm<br>
lapi_ppc_64bit_IP_sles1100-3.1.3.3-s003a.ppc64.rpm<br>
lapi_ppc_64bit_US_sles1100-3.1.3.3-s003a.ppc64.rpm<br>
lapi_ppc_32bit_base_IP_sles1000-3.1.3.3-s003a.ppc.rpm<br>
lapi_ppc_32bit_US_sles1000-3.1.3.3-s003a.ppc.rpm<br>
lapi_ppc_64bit_IP_sles1000-3.1.3.3-s003a.ppc64.rpm<br>
lapi_ppc_64bit_US_sles1000-3.1.3.3-s003a.ppc64.rpm<br>
lapi_ppc_32bit_base_IP_rh500-3.1.3.3-s003a.ppc.rpm<br>
lapi_ppc_32bit_US_rh500-3.1.3.3-s003a.ppc.rpm<br>
lapi_ppc_64bit_IP_rh500-3.1.3.3-s003a.ppc64.rpm<br>
lapi_ppc_64bit_US_rh500-3.1.3.3-s003a.ppc64.rpm<br>
lapi_x86_32bit_base_IP_sles1100-3.1.3.3-s003a.i386.rpm<br>
lapi_x86_64bit_IP_sles1100-3.1.3.3-s003a.x86_64.rpm<br>
lapi_x86_32bit_base_IP_sles1000-3.1.3.3-s003a.i386.rpm<br>
lapi_x86_64bit_IP_sles1000-3.1.3.3-s003a.x86_64.rpm<br>
lapi_x86_32bit_base_IP_rh500-3.1.3.3-s003a.i386.rpm<br>
lapi_x86_64bit_IP_rh500-3.1.3.3-s003a.x86_64.rpm<br>

</p>

<p>HPCT RPMs:<br>
ppe_hpct_runtime_sles-5.1.1-0.ppc.rpm<br>
ppe_hpct_sles-5.1.1-0.ppc.rpm<br>
ppe_hpct_runtime64_sles-5.1.1-0.ppc64.rpm<br>
ppe_hpct_rh-5.1.1-0.ppc.rpm<br>
ppe_hpct_runtime_rh-5.1.1-0.ppc.rpm<br>
ppe_hpct_runtime64_rh-5.1.1-0.ppc64.rpm<br>
<br>

</p>

<p>Parallel Debugger RPMs:<br>
ppe_pdb_ppc-5.1.1.0-0911a.ppc.rpm<br>
ppe_pdb_ppc_rh500-5.1.1.0-0911a.ppc.rpm<br>
ppe_pdb_x86-5.1.1.0-0911a.i386.rpm<br>
ppe_pdb_x86_rh500-5.1.1.0-0911a.i386.rpm<br>

</p>

</div>
</li>
</ul>
</div>
</div>
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<div class="ibm-container-body">
<ul class="ibm-twisty">
<li>
<a class="ibm-twisty-trigger" href="#toggle"><img alt="-" src="//www.ibm.com/i/c.gif" /></a>
<span class="ibm-twisty-head"><b>Changelog</b>
</span>
<div class="ibm-twisty-body">

<div class="ibm-container-body">

<p><b>History of problems fixed</b></p>
<p>The following fixes apply to IBM PE updates for both Power Systems and System x, unless noted otherwise. All problem fixed apply to both AIX and Linux unless stated otherwise.</p>
<br>

<!-- 5119 start -->
<p><b>IBM PE 5.1.1.9 [December 7, 2011]</b></p>

<p><b>MPI:</b></p>
<div class="ibm-indent">
<ol>
<li>Fixed MPI_Gatherv memory issue when shared memory is used.</li>
<li>Allow calling MPI_Alloc_mem with size = 0.</li>
</ol>
</div>

<p><b>POE:</b></p>
<div class="ibm-indent">
<p>None</p>
</div>

<p><b>LAPI:</b></p>
<div class="ibm-indent">
<p>None</p>
</div>

<p><b>HPCT:</b></p>
<div class="ibm-indent">
<ol>
<li>Fixed HPCT when compiling Fortran code with optimization.</li>
</ol>
</div>

<p><b>PDB:</b></p>
<div class="ibm-indent">
<p>None</p>
</div>

<p><b>Totalview Support:</b></p>
<div class="ibm-indent">
<p>None</p>
</div>

<!-- end 5119 -->

<!-- 5118 start -->
<p><b>IBM PE 5.1.1.8 [July 29, 2011]</b></p>

<p><b>MPI:</b></p>
<div class="ibm-indent">
<ol>
<li>Fixed a MPI library internal error that caused MPI-IO to allocate a scratch buffer that is too small.</li>
<li>Improved MPI_ALLTOALLV performance.</li>
</ol>
</div>

<p><b>POE:</b></p>
<div class="ibm-indent">
<ol>
<li>Fixed and HPCOUNT error so that it will work with non-default PLUGINS.</li>
</ol>
</div>

<p><b>LAPI:</b></p>
<div class="ibm-indent">
<p>None</p>
</div>

<p><b>HPCT:</b></p>
<div class="ibm-indent">
<p>None</p>
</div>

<p><b>PDB:</b></p>
<div class="ibm-indent">
<p>None</p>
</div>

<p><b>Totalview Support:</b></p>
<div class="ibm-indent">
<p>None</p>
</div>

<!-- end 5118 -->

<!-- 5117 start -->
<p><b>IBM PE 5.1.1.7 [Sept 22, 2010]</b></p>

<p><b>MPI:</b></p>
<div class="ibm-indent">
<ol>
<li>Fixed MPI_Startall failed with "handle is active" error message.</li>
</ol>
</div>

<p><b>POE:</b></p>
<div class="ibm-indent">
<ol>
<li>Fixed core dump when path character size is greater than 256.</li>
<li>POE README documentation correction.</li>
</ol>
</div>

<p><b>LAPI:</b></p>
<div class="ibm-indent">
<p>None</p>
</div>

<p><b>HPCT:</b></p>
<div class="ibm-indent">
<p>None</p>
</div>

<p><b>PDB:</b></p>
<div class="ibm-indent">
<p>None</p>
</div>

<p><b>Totalview Support:</b></p>
<div class="ibm-indent">
<p>None</p>
</div>

<!-- end 5117 -->
<div class="ibm-rule"><hr></div>

<!-- 5116 start -->
<p><b>IBM PE 5.1.1.6 [June 25, 2010]</b></p>

<p><b>MPI:</b></p>
<div class="ibm-indent">
<ol>
<li>mpxlf90_r fixed to work with XL fortran installed in non-default location.</li>
<li>Fixed mpi_sendrecv to pass parameter check during compilation when its sendcount argument is passed a numeric value.</li>
<li>Fixed an error that causes MPI_Waitany to return the index of a previously completed request when that request is a persistent request.</li>
<li>Fixed data corruption in MPI_wait() in a single threaded application.</li>
</ol>
</div>
 
<p><b>POE:</b></p>
<div class="ibm-indent">
<p>POE Task affinity enhancements.</p>
</div>
 
<p><b>LAPI:</b></p>
<div class="ibm-indent">
<p>None</p>
</div>
 
<p><b>HPCT:</b></p>
<div class="ibm-indent">
<p>None</p>
</div>
 
<p><b>PDB:</b></p>
<div class="ibm-indent">
<p>None</p>
</div>
 
<p><b>Totalview Support:</b></p>
<div class="ibm-indent">
<p>None</p>
</div>

<!-- end 5116 -->
<div class="ibm-rule"><hr></div>

<!-- 5115 start -->
<p><b>IBM PE 5.1.1.5 [February 15, 2010]</b></p>

<p><b>MPI:</b></p>
<div class="ibm-indent">
<ol>
<li>Fixed a problem that causes the display of the 0032-117 error message.<br>
 -- User pack or receive buffer is too small, when do send or receive  of a larger than 2GB data buffer.</li>
<li>Fixed a problem that causes MPI_Barrier failure when the communicator is MPI_COMM_SELF.</li>
<li>Fixed an error that causes MPI_Waitany to return the index of a previously completed request when that request is a persistent request.</li>
<li>Fixed a problem that MPI_Init hangs when the MPI job is started by the Totalview debugger.</li>
</ol>
</div>

<p><b>POE:</b></p>
<div class=ibm-indent>
<ol>
<li>Fixed a problem that causes the Totalview debugger to hang before it has finished connecting to the application processes.</li>
</ol> 
</div>

<p><b>LAPI:</b></p>
<div class=ibm-indent>
<ol>
<li>Fixed a problem that LAPI returns a bad exit code when the library is dynamically linked.
</li>
<li>The default value for MP_RC_MAX_QP is reduced from old value of MAXINT  to 8156 for 32 tasks per node and 4030 for 64 tasks per node.  This change will reduce the memory used in creating QP.</li>
<li>Fix an error that occurs in the LAPI_Rmw function when it is called with a NULL 'prev_tgt_val' pointer.</li>
</ol>
</div>

<p><b>HPCT:</b></p>
<div class="ibm-indent">
<p>None</p>
</div>

<p><b>PDB:</b></p>
<div class="ibm-indent">
<p>None</p>
</div>

<p><b>Totalview Support:</b></p>
<div class="ibm-indent">
<p>None
</p>
</div>

<!-- end 5115 -->
<div class="ibm-rule"><hr></div>

<!-- 5114 start -->
<p><b>IBM PE 5.1.1.4 [November 30, 2009]</b></p>

<p><b>MPI:</b></p>
<div class="ibm-indent">
<ol>
<li>Fixed a bug causing MPI_finalize to fail.</li>
<li>Performance enhancement for applications that have imbalanced workload among tasks and perform neighbor communication using MPI_Alltoallv.</li>
</ol>

</div>

<p><b>POE:</b></p>
<div class=ibm-indent>
<p>None</p>

</div>

<p><b>LAPI:</b></p>
<div class=ibm-indent>
<p>None</p>
</div>

<p><b>HPCT:</b></p>
<div class="ibm-indent">
<ol>
<li>Allow tracing of the MPI_Alltoallw MPI function.</li>
<li>Fixed a bug running a 64 bit program linked with libmpitrace.a</li>
</ol>
</div>

<p><b>PDB:</b></p>
<div class="ibm-indent">
<p>None</p>
</div>

<p><b>Totalview Support:</b></p>
<div class="ibm-indent">
<p>None
</p>
</div>

<!-- end 5114 -->

<!-- 5113 start -->
<p><b>IBM PE 5.1.1.3 [August 20, 2009]</b></p>

<p><b>MPI:</b></p>
<div class="ibm-indent">
<ol>
<li>Improve MPI-IO performance.</li>
<li>Fixed a program hang problem that was caused by the MPI_Probe and the
          MPI_Iprobe functions which may erroneously return an early arrival
          message which has already been match with a non-blocking receive.</li>
<li>Fixed the MPI_Request_free function so that the function will free an active
          receive request.</li>
<li>Cleaned up memory leak that was caused by the MPI_Waitall function
          when there was a long list of requests.</li>
<li>Fixed a problem that an application may hang while exiting.  This
          situation was seen by an application that dynamically loads an
          object that calls the MPI_Init function.</li>
<li>Cleaned up memory leak that was caused by the MPI_Bsend function.</li>
<li>Fixed an error in the MPI_Rsend function that caused the display of the following error message.<br>

               <b>ERROR: 0032-171 Communication subsystem error:<br>
               MPCI_MSG: MPCI Internal error.   in MPI_Rsend, task 0</b>
</li>
<li>Fixed a rare segmentation fault problem caused by the MPI_Recv function.</li>
</ol>

</div>

<p><b>POE:</b></p>
<div class=ibm-indent>
<p>None</p>

</div>

<p><b>LAPI:</b></p>
<div class=ibm-indent>
<p>Fixed internal problems that caused slow application performance.</p>
</div>

<p><b>HPCT:</b></p>
<div class="ibm-indent">
<p>None</p>
</div>

<p><b>PDB:</b></p>
<div class="ibm-indent">
<p>None</p>
</div>

<p><b>Totalview Support:</b></p>
<div class="ibm-indent">
<p>None
</p>
</div>

<!-- end 5113 -->

<div class="ibm-rule"><hr></div>

<!-- 5112 start -->
<p><b>IBM PE 5.1.1.2 [June 22, 2009]</b></p>

<p><b>MPI:</b></p>
<div class="ibm-indent">
<ol>
<li>Fixed an MPI_Bcast function error.  Without this fix an MPI_Bcast
          function call may return without the broadcast buffer being fully
          synchronized to memory under rare conditions. This may result in
          the computation loading a stale value from memory.<br><br>

    This is fixed in PTF2 (APAR IZ50392) with a memory barrier prior
          to MPI_Bcast return.
    </li>
</ol>

</div>

<p><b>POE:</b></p>
<div class=ibm-indent>
<p>None</p>

</div>

<p><b>LAPI:</b></p>
<div class=ibm-indent>
<p>None</p>
</div>

<p><b>HPCT:</b></p>
<div class="ibm-indent">
<p>None</p>
</div>

<p><b>PDB:</b></p>
<div class="ibm-indent">
<p>None</p>
</div>

<p><b>Totalview Support:</b></p>
<div class="ibm-indent">
<p>None
</p>
</div>
<!-- 5112 end -->
<div class="ibm-rule"><hr></div>

<!-- start 5111 -->
<p><b>IBM PE 5.1.1.1 [May 18, 2009]</b></p>

<p><b>MPI:</b></p>
<div class="ibm-indent">
<ol>
<li>Fixed an internal error that causes the termination of an user space job.</li>
<li>Corrected the MPCI statistics displays for:
<ul class="ibm-bullet-list ibm-no-links">

             <li>sends.</li>
             <li>sendsComplete.</li>
             <li>sendWaitsComplete.</li>
          <li>MPCI statistics that are shown when the environment variable MP_STATISTICS
          has been set.</li>
    </ul>
</ol>

</div>

<p><b>POE:</b></p>
<div class=ibm-indent>
<ol>


<li> The text and explanation for error message 0031-736 has been updated.
          The new error text is:<br><br>
             Cannot create log file, 'name', on 'system'. Logging is stopped.
          The reason for failure is either:
 <ol type="a">
    <li>The file system is full.</li>
    <li>A log file of the same name has been created for another owner.</li>
  </ol>
    <li>Fixed a POE seg-fault problem when a job running over InfiniBand on AIX 5.3
          was check pointed.</li>
    <li>Fixed a problem where the XLSMPOPTS environment variable specified for
          a standalone openMP job was incorrectly parsed.</li>
</ol>

</div>

<p><b>LAPI:</b></p>
<div class=ibm-indent>
<ol>
<li>Fixed an AIX 5.3 installation problem that caused /usr/lib/liblapi_r.a
          to be linked to the wrong file.
</li>
<li> Fixed a problem which causes the termination of a preempted user job.</li>
<li>Fixed an AIX BSR device driver problem that caused a node crash when
          the BSR device is being closed.</li>
<li>Cleaned up zombie tasks.
</li>
</ol>

</div>

<p><b>HPCT:</b></p>
<div class="ibm-indent">
<p>None</p>
</div>

<p><b>PDB:</b></p>
<div class="ibm-indent">
<p>None</p>
</div>

<p><b>Totalview Support:</b></p>
<div class="ibm-indent">
<p>None
</p>
</div>

<div class="ibm-rule"><hr></div>
<!-- end 5111 -->

<!-- start 5104 -->
<p><b>IBM PE 5.1.0.4 [April 2, 2009]</b></p>

<p>IBM PE51 has removed its dependency on the IBM RSCT product.</p>

<p><b>MPI:</b></p>
<div class="ibm-indent">
<ol>
<li>Fixed an internal error that caused the display of an erroneous message.
          The incorrect message is:
<br>
          <b>ERROR: 0032-171 Communication subsystem error:<br>
             ATTENTION: 2660-486 Failover/Recovery setup failed: cannot open</b>.<br><br>
   
   The correct message is:<br>
             <b>0032-486 Pending collective communication operations when freeing
             communicator in &lt node_name &gt , task &lt task_number &gt</b>
</li>
</ol>

</div>

<p><b>POE:</b></p>
<div class=ibm-indent>
<p>None</p>

</div>

<p><b>LAPI:</b></p>
<div class=ibm-indent>
<p>None</p>

</div>

<p><b>HPCT:</b></p>
<div class="ibm-indent">
<p>None</p>
</div>

<p><b>PDB:</b></p>
<div class="ibm-indent">
<p>None</p>
</div>

<p><b>Totalview Support:</b></p>
<div class="ibm-indent">
<p>None
</p>
</div>

<div class="ibm-rule"><hr></div>
<!-- end 5104 -->

<!-- start 5103 -->

<p><b>IBM PE 5.1.0.3 [March 12, 2009]</b></p>

<p>IBM PE51 has removed its dependency on the IBM RSCT product.</p>

<p><b>MPI:</b></p>
<div class="ibm-indent">
<ol>
<li>Corrected the MPI::Get_processor_name function prototype in mpi.h. The correct prototype is:<br>
          <b>MPI::Get_processor_name(char* name, int& resultlen)</b>.

<li>Fixed an invalid memory free problem in the MPI_Ibsend function that caused an application to hang.</li>
</ol>

</div>

<p><b>POE:</b></p>
<div class=ibm-indent>
<ol>
<li>Fixed a POE task affinity problem for non-LoadL job when SMT is disabled on Power Systems Linux.</li>
<li>Fixed a PMD hang problem when task affinity is used and the number of tasks on a node exceeds the number of available logical/physical cpus.</li>
<li>Fixed a PMD coredump problem when PMD fails to create a new log file.</li>
</ol>

</div>

<p><b>LAPI:</b></p>
<div class=ibm-indent>
<ol>
<li>Fix internal errors that cause Communication Timeout, segmentation fault or slow performance.</li>
<li>Fix a problem on a Linux InfiniBand system which causes data corruption when a forked child process pings pages that exist in the parent process as well. A copy-on-write operation causes the mapping between virtual to physical address to change and this causes the device to send data from the wrong physical address.
</li>
<li>Clean up a PNSD memory leak problem.</li>
<li>Fix an InfiniBand adapter interrupt handling problem which causes application to hang.</li>
<li>Correct a PTF rejecting problem on AIX. This problem leaves LAPI library links behind after an installed PTF is rejected.</li>
<li>Add new data type to the lapif.h file for Fortran support.</li>
</ol>

</div>

<p><b>HPCT:</b></p>
<div class="ibm-indent">
<p>None</p>
</div>

<p><b>PDB:</b></p>
<div class="ibm-indent">
<p>None</p>
</div>

<p><b>Totalview Support:</b></p>
<div class="ibm-indent">
<p>None
</p>
</div>

<div class="ibm-rule"><hr></div>

<!-- end 5103 -->

<p><b>IBM PE 5.1.0.2 [December 18, 2008]</b></p>

<p><b>MPI:</b></p>
<div class="ibm-indent">
<p>The definitions of MPI_F_STATUS_IGNORE and V2 MPI_F_STATUSES_IGNORE
          are added to the libmpi_ibm.so.  This fix is for Linux only.</p>
</div>

<p><b>POE:</b></p>
<div class=ibm-indent>
<ol>
<li>Support for the environment variable MP_RFIFO_SIZE has been enhanced
          to accept input value with 'K' and 'M' size modifiers.</li>
<li>Add new MP_SYNC_QP environment variable.  Setting its value to 'yes'
          will enhance POE's IB job setup time.</li>

</div>

<p><b>LAPI:</b></p>
<div class="ibm-indent">
<p>LAPI will support the POE MP_ACK_THRESH environment variable.
</p>
</div>

<p><b>HPCT:</b></p>
<div class="ibm-indent">
<ol>
<li>Reduce overhead when obtaining OpenMP profiling data.</li>
<li>Improve peekperf performance viewing large MPI trace files.</li>
<li>Show Power 6 hardware counter groups in hardware counter group selection list. (For AIX Only)</li>
<li>Correct counts collected by MPI trace.</li>
<li>Package example files for IBM HPC Toolkit.</li>
</div>
 
<p><b>PDB:</b></p>
<div class="ibm-indent">
<p>None
</p>
</div>

<p><b>Totalview Support:</b></p>
<div class="ibm-indent">
<p>Fix 64-bit MPI program message queue debugging problem.
</p>
</div>

<div class="ibm-rule"><hr></div>

<p><b>IBM PE 5.1.0.1 [November 17, 2008]</b></p>


<p><b>MPI:</b></p>
<div class="ibm-indent">
<p>Roll up various fixes for PE5100 GA.</p>
</div>

<p><b>LAPI:</b></p>
<div class="ibm-indent">
<p>Roll up various fixes for PE5100 GA.</p>

</div>


<p><b>POE:</b></p>
<div class="ibm-indent">
<p>Roll up various fixes for PE5100 GA.</p>


</div>
</li>
</ul>
</div>
</div>

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