File blosc.changes of Package blosc
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Fri Aug 7 14:51:19 UTC 2015 - normand@linux.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
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Tue May 19 10:23:41 UTC 2015 - toddrme2178@gmail.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 @littlezhou 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
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Tue Jul 22 21:36:40 UTC 2014 - toddrme2178@gmail.com
- Cleanup .so files
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Tue Jul 22 15:09:27 UTC 2014 - toddrme2178@gmail.com
- Use source url so source validation can run.
- Change group
- Cleanup post and postun
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Thu Jul 17 09:51:46 UTC 2014 - toddrme2178@gmail.com
- Update to 1.4.1
* Fixed a bug in blosc_getitem() introduced in 1.4.0. Added a test for
blosc_getitem() as well.
- Update to 1.4.0
* Support for non-Intel and non-SSE2 architectures has been added. In
particular, the Raspberry Pi platform (ARM) has been tested and all
tests pass here.
* Architectures requiring strict access alignment are supported as well.
Due to this, arquitectures with a high penalty in accessing unaligned
data (e.g. Raspberry Pi, ARMv6) can compress up to 2.5x faster.
* LZ4 has been updated to r119 (1.2.0) so as to fix a possible security
breach.
- Update to 1.3.6
* Updated to LZ4 r118 due to a (highly unlikely) security hole. For
details see:
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Thu May 8 13:01:03 UTC 2014 - toddrme2178@gmail.com
- Initial version
