Changelog for blosc-devel-1.14.4-11.8.i586.rpm :

* Tue Aug 21 2018 mpluskalAATTsuse.com- Update to version 1.14.4:
* Added a new DEACTIVATE_SSE2 option for cmake that is useful for disabling SSE2 when doing cross-compilation (see #236).
* New check for detecting output buffers smaller than BLOSC_MAX_OVERHEAD.
* The complib and version parameters for blosc_get_complib_info() can be safely set to NULL now. This allows to call this function even if the user is not interested in these parameters (so no need to reserve memory for them).
* In some situations that a supposedly blosc chunk is passed to blosc_decompress(), one might end with an Arithmetic exception. This is probably due to the chunk not being an actual blosc chunk, and divisions by zero might occur. A protection has been added for this.
* Fri Apr 13 2018 mpluskalAATTsuse.com- Update to version 1.14.3:
* Fixed a bug that caused C-Blosc to crash on platforms requiring strict alignment.
* Fixed a piece of code that was not C89 compliant.
* Tue Feb 06 2018 mpluskalAATTsuse.com- Update to version 1.13.5:
* Fixed a buffer overrun that happens when compressing small buffers and len(destination_buffer) < (len(source_buffer) + BLOSC_MAX_OVERHEAD). Reported by Ivan Smirnov.
* Tests work now when external compressors are located in non-system locations. Fixes #210. Thanks to Leif Walsh.
* Fixed a bug uncovered by the python-blosc test suite: when a buffer is to be copied, then we should reserve space for the header, not block pointers.
* Serious optimization of memory copy functions (see new blosc/fastcopy.c). This benefits the speed of all the codecs, but specially the BloscLZ one. As a result of the above, the BloscLZ codec received a new adjustment of knobs so that you should expect better compression ratios with it too.
* Thu Dec 28 2017 jengelhAATTinai.de- Fix RPM group. Compact descriptions.
* Sun Dec 24 2017 mpluskalAATTsuse.com- Update to version 1.12.1:
* Backported BloscLZ parameters that were fine-tuned for C-Blosc2.- Packaging changes:
* Run spec-clener
* Use shared libraries with compression codecs instead of bundled ones
* Use more of cmake macros
* Build in parallel
* Tue Apr 18 2017 toddrme2178AATTgmail.com- Update to 1.11.2 - Enabled use as a CMake subproject, exporting shared & static library targets for super-projects to use. See PRs #178, #179 and #180. Thanks to Kevin Murray. - Internal LZ4 codec updated to 1.7.5. - Internal Zstd codec updated to 1.1.2.
* Fri Sep 16 2016 toddrme2178AATTgmail.com- Update to 1.11.1 - Fixed a bug introduced in 1.11.0 and discovered by pandas test suite. This basically prevented to decompress buffers compressed with previous versions of C-Blosc. See: https://github.com/Blosc/python-blosc/issues/115- Update to 1.11.0 - Internal Zstd codec upgraded to 1.0.0. - New block size computation inherited from C-Blosc2. Benchmarks are saying that this benefits mainly to LZ4, LZ4HC, Zlib and Zstd codecs, both in speed and in compression ratios (although YMMV for your case). - Added the AATTrpath flag in Mac OSX for shared libraries. Fixes #175. - Added a fix for VS2008 - License changed from MIT to 3-clause BSD style.- Update to 1.10.2 - Force the use of --std=gnu99 when using gcc. Fixes #174.- Update to 1.10.1 - Removed an inconsistent check for C11 (__STDC_VERSION__ >= 201112L and _ISOC11_SOURCE) as this seem to pose problems on compilers doing different things in this check (e.g. clang). See https://github.com/Blosc/bloscpack/issues/50.- Update to 1.10.0 - Initial support for Zstandard (0.7.4). Zstandard (or Zstd for short) is a new compression library that allows better compression than Zlib, but that works typically faster (and some times much faster), making of it a good match for Blosc.- Update to 1.9.3 - Reverted a mistake introduced in 1.7.1. At that time, bit-shuffling was enabled for typesize == 1 (i.e. strings), but the change also included byte-shuffling accidentally. This only affected performance, but in a quite bad way (a copy was needed). This has been fixed and byte-shuffling is not active when typesize == 1 anymore.
* Thu Jul 07 2016 toddrme2178AATTgmail.com- Update to 1.9.2
* Check whether Blosc is actually initialized before blosc_init(), blosc_destroy() and blosc_free_resources(). This makes the library more resistant to different initialization cycles (e.g. https://github.com/stevengj/Blosc.jl/issues/19).- Update to 1.9.1
* The internal copies when clevel=0 are made now via memcpy(). At the beginning of C-Blosc development, benchmarks where saying that the internal, multi-threaded copies inside C-Blosc were faster than memcpy(), but 6 years later, memcpy() made greats strides in terms of efficiency. With this, you should expect an slight speed advantage (10% ~ 20%) when C-Blosc is used as a replacement of memcpy() (which should not be the most common scenario out there).
* Added a new DEACTIVATE_AVX2 cmake option to explicitly disable AVX2 at build-time. Thanks to James Bird.
* The ``make -jN`` for parallel compilation should work now. Thanks to James Bird.- Update to 1.9.0
* New blosc_get_nthreads() function to get the number of threads that will be used internally during compression/decompression (set by already existing blosc_set_nthreads()).
* New blosc_get_compressor() function to get the compressor that will be used internally during compression (set by already existing blosc_set_compressor()).
* New blosc_get_blocksize() function to get the internal blocksize to be used during compression (set by already existing blosc_set_blocksize()).
* Now, when the BLOSC_NOLOCK environment variable is set (to any value), the calls to blosc_compress() and blosc_decompress() will call blosc_compress_ctx() and blosc_decompress_ctx() under the hood so as to avoid the internal locks. See blosc.h for details. This allows multi-threaded apps calling the non _ctx() functions to avoid the internal locks in C-Blosc. For the not multi-threaded app though, it is in general slower to call the _ctx() functions so the use of BLOSC_NOLOCK is discouraged.
* In the same vein, from now on, when the BLOSC_NTHREADS environment variable is set to an integer, every call to blosc_compress() and blosc_decompress() will call blosc_set_nthreads(BLOSC_NTHREADS) before the actuall compression/decompression process. See blosc.h for details.
* Finally, if BLOSC_CLEVEL, BLOSC_SHUFFLE, BLOSC_TYPESIZE and/or BLOSC_COMPRESSOR variables are set in the environment, these will be also honored before calling blosc_compress().
* Calling blosc_init() before any other Blosc call, although recommended, is not necessary anymore. The idea is that you can use just the basic blosc_compress() and blosc_decompress() and control other parameters (nthreads, compressor, blocksize) by using environment variables (see above).- Update to 1.8.1
* Disable the use of __builtin_cpu_supports() for GCC 5.3.1 compatibility.- Update to 1.8.0
* The code is (again) compatible with VS2008 and VS2010. This is important for compatibility with Python 2.6/2.7/3.3/3.4.
* Introduced a new global lock during blosc_decompress() operation. As the blosc_compress() was already guarded by a global lock, this means that the compression/decompression is again thread safe. However, when using C-Blosc from multi-threaded environments, it is important to keep using the
*_ctx() functions for performance reasons. NOTE: _ctx() functions will be replaced by more powerful ones in C-Blosc 2.0.
* Wed Mar 09 2016 toddrme2178AATTgmail.com- Update to 1.7.1
* Fixed a bug preventing bitshuffle to work correctly on getitem(). Now, everything with bitshuffle seems to work correctly.
* Fixed the thread initialization for blosc_decompress_ctx(). Issue [#158]. Thanks to Chris Webers.
* Fixed a bug in the blocksize computation introduced in 1.7.0. This could have been creating segfaults.
* Allow bitshuffle to run on 1-byte typesizes.
* New parametrization of the blocksize to be independent of the typesize. This allows a smoother speed throughout all typesizes.
* lz4 and lz4hc codecs upgraded to 1.7.2 (from 1.7.0).
* When calling set_nthreads() but not actually changing the number of threads in the internal pool does not teardown and setup it anymore. PR #153. Thanks to Santi Villalba.- Update to 1.7.0
* Added a new \'bitshuffle\' filter so that the shuffle takes place at a bit level and not just at a byte one, which is what it does the previous \'shuffle\' filter.
* New acceleration mode for LZ4 and BloscLZ codecs that enters in operation with complevel < 9. This allows for an important boost in speed with minimal compression ratio loss. Francesc Alted.
* LZ4 codec updated to 1.7.0 (r130).
* PREFER_EXTERNAL_COMPLIBS cmake option has been removed and replaced by the more fine grained PREFER_EXTERNAL_LZ4, PREFER_EXTERNAL_SNAPPY and PREFER_EXTERNAL_ZLIB. In order to allow the use of the new API introduced in LZ4 1.7.0, PREFER_EXTERNAL_LZ4 has been set to OFF by default, whereas PREFER_EXTERNAL_SNAPPY and PREFER_EXTERNAL_ZLIB continues to be ON.
* Implemented SSE2 shuffle support for buffers containing a number of elements which is not a multiple of (typesize
* vectorsize). Jack Pappas.
* Added SSE2 shuffle/unshuffle routines for types larger than 16 bytes. Jack Pappas.
* \'test_basic\' suite has been split in components for a much better granularity on what\'s a possibly failing test. Also, lots of new tests have been added. Jack Pappas.
* Fixed compilation on non-Intel archs (tested on ARM). Zbyszek Szmek.
* Modifyied cmake files in order to inform that AVX2 on Visual Studio is supported only in 2013 update 2 and higher.
* Added a replacement for stdbool.h for Visual Studio < 2013.
* blosclz codec adds Win64/Intel as a platform supporting unaligned addressing. That leads to a speed-up of 2.2x in decompression.
* New blosc_get_version_string() function for retrieving the version of the c-blosc library. Useful when linking with dynamic libraries and one want to know its version.
* New example (win-dynamic-linking.c) that shows how to link a Blosc DLL dynamically in run-time (Windows only).
* The `context.threads_started` is initialized now when decompressing. This could cause crashes in case you decompressed before compressing (e.g. directly deserializing blosc buffers). AATTatchouprakov.
* The HDF5 filter has been removed from c-blosc and moved into its own repo at: https://github.com/Blosc/hdf5
* The MS Visual Studio 2008 has been tested with c-blosc for ensuring compatibility with extensions for Python 2.6 and up.- Remove update-included 0001-Fix-cmake-system-check.patch and 0002-Fix-compilation-on-unknown-archs.patch
* Mon Feb 15 2016 mkravecAATTsuse.com- Replaced long syntax with macros %cmake, %cmake_install, %ctest
* Fri Aug 07 2015 normandAATTlinux.vnet.ibm.com- Add two patches dragged from fedora to support non-intel archi 0001-Fix-cmake-system-check.patch 0002-Fix-compilation-on-unknown-archs.patch
* Tue May 19 2015 toddrme2178AATTgmail.com- Update to version 1.6.1:
* Fixed a subtle, but long-standing bug in the blosclz codec that could potentially overwrite an area beyond the output buffer.
* Support for runtime detection of AVX2 and SSE2 SIMD instructions, allowing running AVX2 capable c-blosc libraries to run on machines with no AVX2 available (will use SSE2 instead).
* A new blocksize computation allows for better compression ratios for larger typesizes (> 8 bytes), without not penalizing the speed too much (at least on modern CPUs).- changes from version 1.6.0:
* Support for AVX2 is here! The benchmarks with a 4-core Intel Haswell machine tell that both compression and decompression are accelerated around a 10%, reaching peaks of 9.6 GB/s during compression and 26 GB/s during decompression (memcpy() speed for this machine is 7.5 GB/s for writes and 11.7 GB/s for reads). Many thanks to AATTlittlezhou for this nice work.
* Support for HPET (high precision timers) for the `bench` program. This is particularly important for microbenchmarks like bench is doing; since they take so little time to run, the granularity of a less-accurate timer may account for a significant portion of the runtime of the benchmark itself, skewing the results. Thanks to Jack Pappas.- changes from version 1.5.4:
* Updated to LZ4 1.6.0 (r128).
* Fix resource leak in t_blosc. Jack Pappas.
* Better checks during testing. Jack Pappas.
* Dynamically loadable HDF5 filter plugin. Kiyo Masui.- changes from version 1.5.3:
* Use llabs function (where available) instead of abs to avoid truncating the result. Jack Pappas.
* Use C11 aligned_alloc when it\'s available. Jack Pappas.
* Use the built-in stdint.h with MSVC when available. Jack Pappas.
* Only define the __SSE2__ symbol when compiling with MS Visual C++ and targeting x64 or x86 with the correct /arch flag set. This avoids re-defining the symbol which makes other compilers issue warnings. Jack Pappas.
* Reinitializing Blosc during a call to set_nthreads() so as to fix problems with contexts. Francesc Alted.- changes from version 1.5.2:
* Using blosc_compress_ctx() / blosc_decompress_ctx() inside the HDF5 compressor for allowing operation in multiprocess scenarios. See: https://github.com/PyTables/PyTables/issues/412 The drawback of this quick fix is that the Blosc filter will be only able to use a single thread until another solution can be devised.- changes from version 1.5.1:
* Updated to LZ4 1.5.0. Closes #74.
* Added the \'const\' qualifier to non SSE2 shuffle functions. Closes [#75].
* Explicitly call blosc_init() in HDF5 blosc_filter.c, fixing a segfault.
* Quite a few improvements in cmake files for HDF5 support. Thanks to Dana Robinson (The HDF Group).
* Variable \'class\' caused problems compiling the HDF5 filter with g++. Thanks to Laurent Chapon.
* Small improvements on docstrings of c-blosc main functions.- changes from version 1.5.0:
* Added new calls for allowing Blosc to be used
*simultaneously
* (i.e. lock free) from multi-threaded environments. The new functions are: - blosc_compress_ctx(...) - blosc_decompress_ctx(...) See the new docstrings in blosc.h for how to use them. The previous API should be completely unaffected. Thanks to Christopher Speller.
* Optimized copies during BloscLZ decompression. This can make BloscLZ to decompress up to 1.5x faster in some situations.
* LZ4 and LZ4HC compressors updated to version 1.3.1.
* Added an examples directory on how to link apps with Blosc.
* stdlib.h moved from blosc.c to blosc.h as suggested by Rob Lathm.
* Fix a warning for {snappy,lz4}-free compilation. Thanks to Andrew Schaaf.
* Several improvements for CMakeLists.txt (cmake).
* Fixing C99 compatibility warnings. Thanks to Christopher Speller.- specfile:
* update copyright year