DPCL 3.4.4 release available

DPCL Admin — Wed, 31 Oct 2007 20:17:21 -0000

DPCL 3.4.4 for AIX is available for download. This release fixes the following bug:
1736659 - DPCL hang after processing create and terminate for parallel application on Power 4 systems with AIX bos.mp 5.3.0.60 installed.

If this fix is not installed, you can work around the problem by manually killing the dpcld (and sesmgr PE Benchmarker process) owned by your userid

DPCL production release 3.4.2 available for download

DPCL Admin — Tue, 09 Aug 2005 11:04:22 -0000

DPCL release 3.4.2 is available for download from http://sourceforge.net/project/showfiles.php?group_id=128800&package_id=143438. This release is intended for production use.

The major changes in this release are

Support for instrumentation at the block level of application source code (AIX only). See http://dpcl.sourceforge.net/doc/sourceblock.html for details.

Enhancements to improve scaling and memory utilization when running DPCL on large systems.

Enhancements to improve ability of DPCL to handle installing large numbers of probes in an application

Fixes to various DPCL daemon termination problems

In addition, this release includes the following bug fixes

SIGSEGV in DPCL daemon when calling destructor for a ModuleObj object

Problem loading probe modules in 64 bit target applications

Target application gets SIGSEGV when DPCL attempts to instrument shared object

Target application gets SIGILL when removing probes

DPCL 3.3.4 available for download

DPCL Admin — Thu, 01 Apr 2004 21:20:06 -0000

DPCL version 3.3.4 is the current production release of DPCL for AIX and
Linux as of 4/1/2004. This release is available for download from the DPCL
open source website at http://dpcl.sourceforge.net

This version contains the following fixes and enhancements
1) Implement inclusive instrumentation points (sorted by instruction
address)
2) Control type checking in probe expressions
3) Unwanted files appearing when calling expand() function
4) Function call sites missing from source block objects
5) Add message size information to debug log
6) Fix runaway daemons in Load Leveler environment
7) Fix problem where closing stdin causes application disconnect
8) Fix problem with applications linked with -bmaxdata option
9) Block object missing when target application function has no local
variables

DPCL 3.3.3 available for download

DPCL Admin — Thu, 30 Oct 2003 20:51:08 -0000

DPCL version 3.3.3 is available for download from the downloads page at http://oss.software.ibm.com/dpcl. Install images are available for AIX 5.2 and Linux Red Hat 8.0 and later. A compressed tar file of all DPCL source is also available from that same page.

This release of DPCL contains support for authentication and authorization of users using IBM's Cluster Security Services package.

Documentation for DPCL authentication and authorization setup is located at http://oss.software.ibm.com/dpcl/doc/DPCL_Security_Setup.doc

This release also contains fixes for bugs discovered since the previous (3.3.2) release including the following

DPCL crashes when reading long symbol names from target executable

Incorrect group membership for DPCL daemon when running DPCL in a DCE environment

Problems processing 64-bit FORTRAN applications

Problems reading symbol tables in programs compiled with xlf 8.0

Improved performance for communication between the DPCL client and DPCL daemons

Compilation problems building the Linux implementation of DPCL on Red Hat 8.0 and Red Hat 9.0

This version of DPCL is intended for production use. This version is required for PE Benchmarker users with IBM's Parallel Environment 4.1 installed.

DPCL Website Updated

DPCL Admin — Mon, 19 May 2003 17:37:12 -0000

The DPCL website has been updated with new content. This content includes a new web page describing fixes required to other software in order to use DPCL, a new web page describing some debugging tips and usage hints for DPCL, and updates to the FAQ page. These pages are all available by selecting links on the DPCL project home page at http://oss.software.ibm.com/dpcl

DPCL V3.2.6 Production Version Available

DPCL Admin — Mon, 19 May 2003 17:32:43 -0000

A new production version of DPCL for AIX has been released. It fixes a number of problems including the following

DPCL performance improvements needed

DPCL crashes when processing an application with extremely long symbol names

DPCL crashes when processing large target programs

DPCL crashes creating target processes on some Regatta processors

DPCL returns incorrect line number information for FORTRAN programs compiled with xlf 8.0

DPCL hangs loading 64 bit OpenMP FORTRAN programs

Some sample programs fail to compile

The new version can be downloaded in either source or binary from the DPCL open source website at http://www-124.ibm.com/developerworks/downloads/index.php?group_id=18

This version of DPCL only runs on AIX 5.1 or AIX 5.2

The 3.2.3 version of DPCL has been deleted.

DPCL 3.2.1 and DPCL 3.2.2 Deleted

DPCL Admin — Tue, 09 Apr 2002 11:59:47 -0000

The files for DPCL releases 3.2.1 and 3.2.2 have been deleted as these releases are obsolete.

If source code at these levels is required, it can be retrieved by use of the cvs export or checkout commands, using the -r v321 or -r v322 flags respectively.

DPCL 3.2.5 released

DPCL Admin — Tue, 09 Apr 2002 11:53:15 -0000

DPCL 3.2.5 has been released. The new files are available from the Open Source DPCL download web page http://www-124.ibm.com/developerworks/project/showfiles.php?group_id=18

The following problems have been fixed:
Fixed a problem with connecting to multiple tasks on the same node

Faster reading of symbol tables in target application executable

Fixed a daemon crash caused by symbol names > 8K bytes long in target application

Allow relative path names to be specified on process create

Probe modules for Linux DPCL

DPCL Admin — Thu, 06 Dec 2001 17:59:42 -0000

Phase 1 of the Linux DPCL probe module project has been checked into CVS. This implementation uses the same DPCL API as the AIX implementation.

Currently, the only way to get this code is to checkout the source code from the CVS repository using the default code branch and build DPCL from that source.

The major differences from the AIX implementation are
1) You must compile the probe module using at least the flags -gdwarf-2 -shared and -fpic. Otherwise the probe module will not work and DPCL may hang/fail during the probe module load.
2) All functions in the probe module are visible to DPCL, with the possible exception of static functions, since Linux does not have the concept of an exported symbol list.

Note that this is the initial implementation. There are still several pieces to be completed.
1) Unloading a probe module does not work.
2) Linux BPatch loads symbol information on demand, rather than when the module is initially loaded. The logic which manages this needs to be finished. Currently, multiple requests for symbol information may result in multiple copies of the data being loaded.
3) The original BPatch code had a restriction that only one instance of a source file could be loaded. If a second module was compiled from a source file with the same name, an attempt to load that probe module would trigger an assert. Currently, the reference to the second source file is discarded

Work is in progress to complete these parts of the project.

If you find problems with this code, please send email to the dpcl-develop@oss.software.ibm.com mailing list, describing the problem.

DPCL 3.3.1 release available

DPCL Admin — Fri, 19 Oct 2001 18:16:27 -0000

DPCL 3.3.1 has been released.

This is a development release which supports Red Hat Linux 7.1, AIX 4.3, and AIX 5.1. In addition to AIX support, this release also removes the restriction in the Linux implementation that functions instrumented by DPCL had to be declared as static functions.

This release also includes fixes for a random crash in the Linux DPCL implementation and some portability changes.

If you are using DPCL in a production environment, you should continue to use version 3.2.4 for that purpose.

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