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ChangeLog
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Open-MX 1.5.3 ()
==================================
Improvements from previous release:
* Fix build with 3.5+ kernels where kmap_atomic changed.
* Fix debug driver build with recent kernels (-O0 is not supported).
Caveats:
* No background progression or retransmission is done if the application
does not invoke an Open-MX routine explicitly.
Open-MX 1.5.2 (February 21st 2012)
==================================
Improvements from previous release:
* Fix build on Linux 3.2 kernel.
* Misc minor improvements in the driver.
Open-MX 1.5.1 (October 5th 2011)
================================
The Ludovic release.
Improvements from previous release:
* Fix a memory leak when trying to open a busy endpoint.
* Fix a memory leak when passing the ifnames module parameter
multiple times.
Open-MX 1.5.0 (August 11th 2011)
================================
Improvements from previous release:
* Fix udev detection when /run is available.
* Several minor fixes.
Open-MX 1.4.901 aka 1.5-rc1 (June 8th 2011)
===========================================
Improvements from previous release:
* Initialize endpoint address context to NULL to match MX behavior
(required for PVFS2).
* Make the library thread-safe even when multiple threads manipulate
different endpoints simultaneously.
* Modify the requirements on the target kernel configuration to better
cope with current distribution kernels.
* Show driver configuration summary at the end of configure.
* Add support for DMA engine on RHEL/CentOS 5 kernels.
* Fix support for Linux kernel 3.x releases.
* Several minor fixes.
Open-MX 1.4.0 (March 22nd 2011)
===============================
Improvements from previous release:
* Fix the management of the driver build against a non-running kernel.
* Better support for miscellaneous modutils program installation path.
Open-MX 1.3.901 aka 1.4-rc1 (February 14th 2011)
================================================
Major improvements from previous release:
* Rework the event delivery from the driver to the user-space library
so as to reduce cache invalidation and locking.
Other improvements from previous release:
* Use get_user_pages_fast() to slightly improve memory pinning performance.
Open-MX 1.3.4 (December 16th 2010)
==================================
Bug fixes:
* Fix check_kernel_headers.sh to properly execute as a shell script in
a portable manner.
* Fix a possible memory corruption that could occur if an application's
page gets swapped out right after receiving a large message.
Other improvements from previous release:
* Many interrupt-related clarifications in the FAQ.
* Don't have GPL headers in common/ contaminate the LGPL library.
Open-MX 1.3.3 (October 15th 2010)
=================================
Bug fixes:
* Make omx_set_error_handler() work before omx_init().
* Initialize the error handler early in omx_init() so as to use the
normal error handler as soon possible.
* Do not mix expected and unexpected event queue full in the counters.
Other improvements from previous release:
* Update documentation about the switch from SVN to GIT.
Open-MX 1.3.2 (August 25th 2010, svn r3177)
===========================================
The no-kernel-thread release.
Bug fixes:
* Fix wire-compatibility with MX for medium messages by properly using
the fragment pipeline log on the receive side.
Other improvements from previous release:
* Add OMX_RNDV_THRESHOLD environment variable to tune the eager/rendezvous
threshold (32kB by default) for inter-node communication.
+ Add --with-medium-frags configure option to make the rendezvous
threshold further tunable if needed.
* Add DKMS support to ease automatic rebuild of the kernel driver
when a new kernel is installed, see the FAQ for details.
* Drop the open-mxd kernel thread in favor of deferred works and
kernel timers.
* Update to mx_pingpong from MX 1.2.12 so as to restore its compatibility.
Open-MX 1.3.1 (August 4th 2010, svn r3111)
==========================================
The out-of-order unexpected release.
Bug fixes:
* Fix in-order matching when many unexpected messages arrive out-of-order.
* Fix omx_init when running from /etc/init.d on some distributions.
* Clarify the management of connection nacks so that multiple connect
requests to the same invalid peer fail properly.
Other improvements from previous release:
* Remove the old omx_check.sh script and document the new omx_check
testing infrastructure.
Open-MX 1.3.0 (July 12th 2010, svn r3078)
=========================================
Bug fixes:
* Properly build non-debug libraries with -O2.
Other improvements from previous release:
* Install more internal MX API compatibility headers so that OpenMPI
enables MX internal symbols when configured on top of Open-MX.
* Miscellaneous minor fixes.
Open-MX 1.2.903 aka 1.3-rc3 (June 24th 2010, svn r3060)
=======================================================
Bug fixes:
* Further fix the management of skb destructors by using shared info
destructor data in recent kernels and reverting to the old code
in earlier kernels.
Other improvements from previous release:
* Add a new test infrastructure in parallel of the old omx_check.sh
script.
* Miscellaneous minor fixes all over the place.
Open-MX 1.2.902 aka 1.3-rc2 (June 9th 2010, svn r3022)
======================================================
The skb->cb release.
Bug fixes:
* Fix the management of skb destructors to be compatible with 2.6.33
Linux kernel and later.
Other improvements from previous release:
* Make omx_check.sh work from the build directory before make install.
* Fix Valgrind requirements during configure.
* Some minor fixes to the build system.
* Clarify thread-safety in the FAQ.
Open-MX 1.2.901 aka 1.3-rc1 (May 20th 2010, svn r2984)
======================================================
The automake release.
Bug fixes:
* Fix checksumming of unexpected self messages.
* Fix build with Linux kernel 2.6.33 and 2.6.34.
* Fix omxoed to generate a consistent mapper id across the fabric.
* Improve the ABI of some internal symbols so that Open MPI generates
the right unique network id.
Other improvements from previous release:
* Large cleanup of the build system by switching to automake.
* Miscellaneous minor fixes all over the place.
* Fix many warnings with picky compilers.
Open-MX 1.2.1 (February 8th 2010, svn r2888)
============================================
Bug fixes:
* Fix a potential memory corruption of the destination buffer address
when receiving expected messages.
Other improvements from previous release:
* Cleanup the management of KCC and KARCH for configuring the kernel build.
* Add OMX_DEBUG_CHECKSUM to detect end-to-end data corruption when debug
is enabled.
* Add open-mx.spec to ease RPM package build.
* Update the FAQ and install it in the documentation install directory.
Open-MX 1.2.0 (December 15th 2009, svn r2835)
=============================================
Bug fixes:
* Fix the build of recent Myricom FMS.
* Fix build with final Linux kernel 2.6.32.
Open-MX 1.1.903 aka 1.2-rc3 (December 1st 2009, svn r2826)
==========================================================
Bug fixes:
* Fix installation when using DESTDIR.
* Use udev last_rule option to make sure that no default rule will
ever override Open-MX rules.
Other improvements from previous release:
* Miscellaneous documentation updates.
* Cleanup the verbose message prefix.
* Drop features that were deprecated since 1.1:
+ make installonly (use make install instead).
+ IFACES in the open-mx.conf file (use OMX_IFACES instead).
Open-MX 1.1.902 aka 1.2-rc2 (October 23rd 2009, svn r2802)
==========================================================
Bug fixes:
* Redirect omxoed errors to /var/log/omxoed.log so that we can
avoid hangs when running omx_init through ssh.
* Fix build with the intel compiler icc.
* Fix build with against 2.6.32 kernels.
* Fix the management of the medium message fragment size.
* Fix an invalid assertion when inserting an early medium fragment
at the beginning of the partner early queue.
* Fix some possible aliasing problems.
Other improvements from previous release:
* Add --with-shared-ring-entries to reduce vmalloc memory requirements.
* Misc documentation updates.
Open-MX 1.1.901 aka 1.2-rc1 (September 23rd 2009, svn r2757)
============================================================
The OpenMPI regcache release.
Major improvements from previous release:
* Implement mx__regcache_clean() properly so that OpenMPI forcing
MX_RCACHE=2 does not cause data corruption.
* Use dlmalloc internally so that OpenMPI cannot cause deadlock by
trying to cleanup the regcache when it intercept Open-MX internal
allocations. --disable-internal-malloc may disable it.
Bug fixes:
* Fix the truncating of medium messages on the receive side so as to
not write outside of the receive buffer.
* Fix the transferred length reported on the sender when discarding
a large message in the unexpected handler.
* Fix some potential aliasing problems in the library.
Other improvements from previous release:
* Pass the medium message data to the unexpected handler when a single
fragment is used, as MX does.
* Report information about all boards by default in omx_counters and
omx_endpoint_info.
* Add OMX_IGNORE_MX_ENV environment variable to disable MX environment
variables.
* Improve kernel detection and configuration messages.
* Misc coding-style, tools and documentation improvements.
Open-MX 1.1.1 (August 3rd 2009, svn/open-mx-1.1.x r2693)
========================================================
The multirail release.
Bug fixes:
* Change the reverse peer index table into a per-interface table to
prevent messages from being delivered to the wrong boards in some
multirail configurations.
* Add the OMX_CONNECT_POLLALL environment variable to enforce polling
on all endpoints while waiting for a connect request to complete,
work around for connection deadlocks in multirail configurations.
* Change some globals to endpoint-specific variables so that multiple
endpoints within a single endpoint actually get their progression.
* Fix the management of local peers when clearing the peer table.
* Fix completion of requests in case of timeout.
* Fix destroying of incomplete large send requests.
* Fix management of return and status codes in the MX ABI compatibility
wrappers.
* Improve sanity checks for notify messages so as to prevent buggy
duplicate completion of large send requests.
* Fix the periodical checking of the driver status in the library.
* Fix MTU reporting in the driver status.
* A couple other minor improvements.
Open-MX 1.1.0 (April 27th 2009, svn r2576)
==========================================
Improvements from previous release:
* Properly fail to attach a local interface in case of full peer table.
Open-MX 1.0.903 aka 1.1-rc3 (April 16th 2009, svn r2569)
========================================================
Improvements from previous release:
* Report an error when the peer table is full and some peers failed
to be added.
* Add some early support for Linux kernel 2.6.30.
* Add some annotations in the source code.
* Fix some minor build-regressions in previous release candidates.
* Fix the management of linux kernel release string.
* Move FAQ.html inside the doc directory.
Open-MX 1.0.902 aka 1.1-rc2 (March 25th 2009, svn r2528)
========================================================
The 32bit/64bit Multi-Lib release.
Bug fixes:
* Workaround a kernel panic that may occur on 2.6.18 kernels because
of the broken vmalloc_user() implementation.
Major Enhancements:
* Add --enable-multilib to build both 32bit and 64bit libraries,
+ Install them in lib32/ and lib64/ and symlink lib to the one
that corresponds to the compiler default pointer size.
* Enable thread-safety by default.
Other improvements from previous release:
* The OMX_IFACES variable in open-mx.conf replaces the old IFACES.
* make install does not build anymore, make should be invoked first.
* Allow disabling udev support at make install with udev=0.
* Allow changing the target kernel with --with-linux-release
instead of only enforcing its release name within Open-MX.
* Move kernel modules from lib/modules/ into modules/ with the
install directory.
* Some fixes in the omx_check.sh testing script.
Open-MX 1.0.901 aka 1.1-rc1 (March 13th 2009, svn r2466)
========================================================
The improved non-MX-wire-compatibility release.
Major improvements from previous release:
* Improve non-MX-wire-compatible medium and large message performance
by using full MTU packets in most cases instead of a power-of-two
payload size.
+ Open-MX 1.1.x is not wire compatible with earlier releases if
MX wire compatibility is disabled.
* Disable MX-wire-compatibility by default, configure for MTU=9000.
* Add support for architectures with page size different from 4kB.
Other improvements:
* Add a new optional medium send path relying on page pinning and
fragmented DMAs instead of page copy and large contigous socket
buffers.
* Add an optional kernel-based memory pinning cache invalidation
support through MMU-notifier (starting with Linux kernel 2.6.27),
enable OMX_RCACHE by default when supported.
* Add udev support by installing a rules file in omx_local_install
and not overriding udev work when the environment looks sane.
* The loopback interface hostname is now automatically set to
'localhost'.
* Add manpages for tools programs.
* Add the ability to iprobe/probe across multiple context ids.
* Miscellaneous small improvements and cleanups all over the place.
Open-MX 1.0.6 (March 24th 2009, svn/open-mx-1.0.x r2525)
========================================================
The Linux kernel 2.6.29 (and 2.6.18-is-broken) release.
Bug fixes:
* Workaround a kernel panic that may occur on 2.6.18 kernels because
of the broken vmalloc_user() implementation.
* Fix dmaengine support for Linux kernel 2.6.29.
* Fix 'make installonly' to not modify anything in the build tree.
* Several minor fixes and cleanups.
Open-MX 1.0.5 (January 29th 2009, svn/open-mx-1.0.x r2301)
==========================================================
The OpenMPI 1.3 release.
Bug fixes:
* Extend the MX ABI compatibility with some internal symbols that
OpenMPI requires.
Open-MX 1.0.4 (January 9th 2009, svn/open-mx-1.0.x r2244)
=========================================================
Bug fixes:
* Fix management of large messages in case of many packet loss
at the end of the message.
* Fix management of forgotten/zombie large receive requests.
* Fix support for discarding rendezvous messages within the
unexpected handler.
* Miscellaneous internal error code management fixes.
Open-MX 1.0.3 (December 22nd 2008, svn/open-mx-1.0.x r2219)
===========================================================
Bug Fixes:
* Fix kernel timing on some 32bits architectures that could lead
to bad retransmission or slow hostname resolution.
* Fix hostname resolution so that it can actually occur in parallel
instead of one peer per second or so.
* Improve FMA/FMS support in configure and omx_init.
* Rename omx_pingpong into omx_perf to avoid confusion with
mx_pingpong which is incompatible.
Open-MX 1.0.2 (November 26th 2008, svn/open-mx-1.0.x r2185)
===========================================================
Bug Fixes:
* Fix the management of delayed tiny send requests.
* Fix the management of forgotten requests.
* Make sure the kernel thread does not seem to increase the host load.
* Misc minor pinning-related fixes.
Open-MX 1.0.1 (October 26th 2008, svn/open-mx-1.0.x r2131)
==========================================================
Bug Fixes:
* Fix cancelling of iconnect requests.
* Fix event ring management on the receiver side when the sender
fails to read user-space data during a shared small communication.
* Fix various minor memory leaks.
* Fix driver cross-compiling on some kernels.
Open-MX 1.0.0 (October 8th 2008, svn/open-mx-1.0.x r2077)
=========================================================
The first "stable" release.
Improvements from previous release:
* Miscellaneous minor fixes.
Open-MX 0.9.3 aka 1.0-rc3 (September 22th 2008, svn r2061)
==========================================================
Improvements from previous release:
* Fix driver build on Centos 5.2 kernel.
* Fix a small memory leak in the driver.
* Make headers C++ compliant.
* Dump the driver status when reading /dev/open-mx,
added to omx_init status.
Open-MX 0.9.2 aka 1.0-rc2 (September 8th 2008, svn r2040)
=========================================================
The Resource-Cleanup release.
Major Enhancements:
* Release all non-completed requests and their resources when closing
an endpoint early.
Other improvements from previous release:
* Fix race condition between resending and timeouts introduced in 0.9.0.
* Fix driver build on kernels without PCI support.
* Fix completion of synchronous connect in case of timeout.
* Fix completion of large send in case of unreachable destination.
* Detect various interface status change at runtime.
* Add debugging capabilities to make sure no request has been lost.
* Add verbose messages tuning capabilities.
Open-MX 0.9.1 aka 1.0-rc1 (August 13th 2008, svn r1946)
=======================================================
The MTU 1500 Release.
Major Enhancements:
* Add support for MTU 1500 fabrics with --enable-mtu-1500
(and --disable-mx-wire).
Other improvements from previous release:
* Fix interface reference leak on the large message sender side.
Open-MX 0.9.0 aka 1.0-rc0 (August 11th 2008, svn r1932)
=======================================================
The Many-Requests Release.
Major Enhancements:
* Fixup management of requests in case of resource shortage to prevent
some deadlocks and other wrong behaviors.
* Add a FAQ (also available online at http://open-mx.org/FAQ/)
containing most of the old README and much more.
Other improvements from previous release:
* Optimize intra-node communication by overlapping memory-pinning,
to be enabled with the demandpin kernel module parameter.
* Fix forgotten/zombie send request support.
* Fix intra-node medium send completion in case of event queue full on
the target endpoint.
* Fix the management of pinning errors in case of invalid memory segments.
* Fix invalid memory free in case of early-received large message notify.
* Fix omx_init start/stop timeout to better deal with peer discovery
start/stop delay.
* Fix cross-compilation when the cross-compiler is given at build and not
at configure time.
* Fix modinfo and modprobe usage in the startup script, they are supposed
to be in /sbin.
Open-MX 0.7.0 (June 27th 2008, svn r1806)
=========================================
The Binary Compatibility release.
Major Enhancements:
* Add binary compatibility with MX (from MX version 0.9).
+ The 32bits ABI has changed, applications may have to
be rebuilt on these architectures.
Other improvements from previous release:
* Fix hostname resolution wire compatibility with MX.
* Fix hostname resolution problems on multi-NICs machines.
* Fix enabling of FMA build/install.
* Fix resending of medium messages that were early completed and
freed by the application.
* Fix interface removal when a peer discovery program is running.
* Fix driver oops when trying to use interfaces that do not
provide ethtool ops.
* Fix the init script to be called in all runlevels.
* Add the ability to test/wait_any across multiple context ids.
Open-MX 0.6.0 (May 20th 2008, svn r1727)
========================================
The Dynamic Peer Discovery release.
Major Enhancements:
* Add dynamic peer discovery with the omxoed tool. It is automatically
started by omx_init when loading the module. Also add support for
Myricom's FMA peer discovery (MX-wire-compatible) when its source is
unpacked within the Open-MX source. Static peer table setup is still
possible on demand.
* Improve large message performance in MX-wire-compatible mode, almost
achieving the same performance than in non-wire-compatible mode.
Other improvements from previous release:
* Restore the iface status to valid when failing to detach because some
endpoints were still open.
* Fix useless resending of the last frames of large messages.
* Fix support for abusively fragmented or small packets.
* Fix querying of driver status when unloading.
* Cleanup omx_hostname features.
* A couple miscellaneous minor fixes and improvements everywhere.
Open-MX 0.5.0 (April 30th 2008, svn r1609)
==========================================
The I/OAT and Full-MX-API release.
!! The ABI of the Open-MX library has changed,
!! all existing softwares using Open-MX must be rebuilt.
Major enhancements:
* The whole MX API is now supported thanks to the addition of
omx_set_error_handler().
* Add DMA engine support to offload memory copies on the receive side on
I/OAT hardware when available. Disabled by default, to be enabled with
the dmaengine module parameter. See the README for details.
Other improvements from previous release:
* Fix completion of medium message send in case of a very short last
fragment.
* Fix possible message corruption with very large messages with highly
out-of-order messages.
* Fix support for very large messages, up-to 4GB-1 (32bits length).
* Fix reporting of connection errors to the application.
* Fix a possible wrongly-early completion of large send in case of duplicate
notify message being receive.
* Improve management of queued requests a bit in case of resource shortage.
* Merge status and return codes into a single type and add many new values
for more descriptive error codes (ABI break).
* Rework and uniformize the management of attached interfaces through the
module parameter and sysfs file.
* Cleanup the build system and its messages.
* Many minor fixes, tiny optimizations, and documentation improvements all
over the place.
Open-MX 0.4.0 (February 29th 2008, svn r1408)
=============================================
The PVFS2 release.
Major enhancements:
* Add thread-safety support, to be enabled with --enable-threads.
Other improvements from previous release:
* Add omx_wakeup(), omx_ibuffered() and mx_decompose_endpoint_addr2()
functions.
* Add support for many info keys in omx_get_info()
* Fix and improve retransmission and reconnection.
* Fix support for mixed 32/64bits systems.
* Fix some race conditions when sleeping in the driver.
* Minor fixes in the MXoE wire and API compatibility.
* Many minor fixes, tiny optimizations, and documentation improvements
all over the place.
Open-MX 0.3.0 (February 1st 2008, svn r1234)
============================================
The Many-new-Features release.
Major enhancements:
* Add vectorial communication support through omx_isendv, omx_issendv
and omx_irecvv.
* Add shared communication between endpoints on the same nodes, even if
they are attached to different interfaces.
* Add safe partner disconnection detection and recovery, either when
calling mx_disconnect() or when detecting new sessions.
* Enable sleeping functions by default when using blocking calls since
they now take care of waking up for progression if necessary.
* Add a minimal ABI compatibility with the native MX stack so that at
least Open MPI and MPICH-MX build natively on top of Open-MX.
Other improvements from previous release:
* Fix a nasty bug that occurs after trying to open a busy endpoint.
* Build an additional debugging library by default.
* Support CFLAGS/CPPFLAGS overriding on the configure command line.
* Fix the unexpected handler return value management.
* Fix the registration cache in case of several pending requests
using the same region at the same time.
* Multiple fixes in the installation procedure.
* Various memory leak and minor bug fixes.
* Various debug messages improvements.
* Include the official mx_pingpong and mx_stream benchmarks to ease
wire-compatiblity testing.
Open-MX 0.2.0 (January 16th 2008, svn r1072)
============================================
The Stabilizing-the-Basics release.
Major enhancements:
* Install a sbin/omx_local_install in the install directory to setup the
/etc/init.d/open-mx startup script on each node, with the
/etc/open-mx/open-mx.conf configuration file.
The default static peers file is now /etc/open-mx/peers.
* Improved boards and peers management:
+ Add the omx_hostname tool to change board names.
+ Make omx_init_peers add a single peer when 2 arguments are given.
+ Merge peer and board names so that one updates to other one automatically.
* Rework large message support to handle abort, timeout, endpoint closing,
interface removal, and early module removal safely.
Other improvements from previous release:
* Report interface removal to user-space.
* Add an ABI check between the driver and library.
* Fix possible pull handle confusion when an index is reused soon after.
* Fix driver build and ioctls on mixed 32/64bits platforms.
* Rework locking in the driver to reduce holding time and use RCU fast locking
in the readers.
* Improve messages and debugging messages in the driver.
* Valgrind 3.3 support.
* Lots of various fixes.
Open-MX 0.1.0 (December 20th 2007, svn r908)
============================================
First official release.
Status:
* API compatibility with MX 1.2 (almost complete).
* Wire compatibility with MX 1.2 (still under development).
* Message retransmission.
* Support for kernel >= 2.6.15.
Other improvements from previous snapshot:
* Warn in user-space when opening an endpoint if its interface is not
up or does not have a large enough MTU.
* Fix sequence number wrap-around all over the library code to handle
long-term connections better.
* Ignore some packets instead of aborting in case of high-level of
reordering on the network.
* Limit zombie send requests to 512 by default.
* Add various per-interface countersin the driver and the omx_counters
tool to display/clear them.
* Make OMX_VERBOSE configurable to select which debug messages to show.
Caveats:
* Large message retransmission seem to cause some kernel hang under
heavy message loss rate.
Open-MX alpha 2007-12-03 23:37 (svn r815)
=========================================
This release works well up-to 32kB but still has problems above. MPICH-MX
completes the full IMB benchmark suite if using less than 32kB max.
Changes:
* Add retransmission support
+ Using piggyack or delayed explicit acks in the lib
+ Using kernel timers for pull in the driver
+ All requests have a default timeout of 1000s
- It may be configured with the new omx_set_request_timeout()
+ Add omx_forget() to avoid getting a completion event from a request
+ Allow buffered send to be completed before being acked, and OMX_ZOMBIE_SEND=0 to disable it
+ Add incomplete omx_disconnect() support
+ Add nacks on bad sessions, endpoints, or rdma windows
+ Add some module parameters to simulate packet loss
* Add support for communication to self
+ May be disabled with --disable-self or OMX_DISABLE_SELF=1
* Add sleeping support
+ Disabled for now unless OMX_WAITSPIN=0 is set since it prevents progression from happening
* Add timeout support for blocking functions in the API
* More MX API compat wrapper fixes to help mpich-mx work
* Add Linux 2.6.24 support
* Drop OMX_PEERS_FILENAME and add tools/omx_init_peers to load/clear the table
* Configuration enhancements
+ Add a trivial registration cache, disabled by default, enabled through OMX_RCACHE=1
+ Drop omx_ prefix from module parameters and add description for modinfo output
+ More options to omx_pingpong
* Miscellaneous optimizations
+ Reduce useless memsetting of request structure to 0
+ Do not post a pull request if length is 0
+ Add --disable-endian to reduce overhead on homogeneous architectures
* Debugging improvements
+ Add valgrind ioctl hooks
+ Only print verbose messages in the lib when --enable-debug is passed and OMX_VERBOSE is set
+ No debug messages by default in the driver
* Improve communication between the lib and the driver
+ Rework event reporting from the driver so that event queue full are easier to handle
+ Add shared mappings between the lib and driver to exchange various info instead of using ioctl
* Fix various memory leaks and minor bugs
Open-MX alpha 2007-10-01 10:53
==============================
Changes:
* Improve kernel module management
+ Add an omx_init script to start/stop
+ Create the /dev/open-mx with correct group and permissions in omx_init
. Add --with-device to configure it
+ Fix the way we retrieve LINUX_RELEASE to support some non-vanilla kernels
. Add --with-linux-release to override it
* Non MX-wire compatible improvements
+ Add --disable-mx-wire to disable native MX wire compatibility
+ Add --with-ethertype to change the Ethernet packet type
+ Send 31*8kB instead of 8*4kB in non-MX-wire compatible
+ Display several configuration options when loading the driver
* Large messages fixes
+ Fix pull seqnum wrap-around for very large messages
+ Fix RDMA id boundaries confusion between the lib and the driver
+ Complete the right large send when a notify arrives
* Event management improvements
+ Split event queue into expected and unexpected queues to avoid losing expected events in case of event queue full
+ Support queueing of medium send and large receive to manage the expected event queue properly
* Build improvements
+ Support overriding CC/AR/... on the configure or make command line.
+ Support overriding the kernel module compiler with KCC
+ Fix configure.ac script for some strange autoconf version
* Lib improvements
+ Cleanup request state bitmask
+ Optimize the lib with likely/unlikely when built with GCC
+ Fix memory leak caused by requests never being freed
+ Add support for 0-segments in the MX API compat wrappers
* Change packet contents into network order to support multiple endian-different architectures
* Add minimal NACK support to detect wrong or closed endpoints on connect
* Make kernel debug messages runtime configurable through sysfs and only enable the important ones by default if --enable-debug was passed
* Add omx_endpoint_info
Open-MX alpha 2007-09-19 11:58
==============================
Changes:
* New functions
+ omx_cancel
+ omx_progress
+ omx_disable/reenable_progression
+ omx_context
* Pipeline 2 pull block request during large messages
* Fix completion of requests with correct status and lengths, and handle truncation.
* Improve MX API compatibility wrappers
* Fix dependencies in libopen-mx/
Open-MX alpha 2007-09-08 21:00
==============================
Changes:
* New functions:
+ omx_issend
+ omx_test_any, omx_wait_any
+ omx_iprobe, omx_probe
+ omx_iconnect
+ omx_get/set_endpoint_addr_context
+ omx_register_unexp_handler
* Endpoint parameters
+ Support for context ids
* Preliminary wrappers for MX API compatibility
* Support reconnection from a new instance of a peer
* Cleanup omx_pingpong behavior
* Make sure make clean does not delete driver source files
* Various minor fixes
Open-MX alpha 2007-09-05 12:05
==============================
Changes:
* Board hostnames are now MX-compatible (<hostname>:<boardnumber>)
Open-MX alpha 2007-09-04 11:47
==============================
First release with support for all message sizes.