Rebase to 3.10.0
- Dropped x86_64-SSE2, ix86-SSE1, ix86-3DNow (uncompilable). - Unbundled Lapack. - Added subpackage static. - Disabled incompatible patches. - Modified makefile to include build-id. - Disabled cpu throttling detection again (sorry, could not work on atlas otherwise, feel free to enable yet again - atlas-throttling.patch). - Removed mentions of "Fedora" to promote redistribution. - Modified parts of atlas.spec left in place, work still in progress, cleanup needed.
This commit is contained in:
Frantisek Kluknavsky
parent
ba9fdec101
commit
d3ab68bc6d
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@ -1,68 +0,0 @@
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Notes on the Fedora version of ATLAS
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by Quentin Spencer
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updated: October 4, 2005
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updated by Deji Akingunola
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October 15, 2008
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updated by Deji Akingunola
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June 15, 2011
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Because ATLAS relies on compile-time optimizations to obtain improved
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performance over BLAS and LAPACK, the resulting binaries are closely
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tied to the hardware on which they are compiled, and can likely result
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in very poor performance on other hardware. For this reason,
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including a package like ATLAS in Fedora requires some compromises.
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Firstly, a binary ATLAS package must perform reasonably well on the
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entire range of hardware on which it could potentially be installed.
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Optimizing ATLAS for the most modern hardware can result in
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significant performance penalties for users using the same package on
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older hardware. Second, building from the same source package must
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result in identical binaries for any computer of a particular
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architecture. This is because the binaries installed on a user's
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computer are built on a computer in the Fedora Extras build system,
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which will have hardware different from the end user's hardware, and
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quite possibly different from other available hardware in the build
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system.
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As of version 3.8.2 (in Fedora), ATLAS builds uses achitectural defaults,
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are partial results of past searches when the compiler and architecture
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are known, to discover the appropriate kernels used to build all the required
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libraries. They make install time quicker and also ensure that good results are
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obtained, since they typically represent several searches and/or user
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intervention into the usual search so that maximum performance is found.
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The result is a set of libraries that will not
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necessarily achieve optimal performance on any given hardware but
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should still offer significant performance gains over the reference
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BLAS and LAPACK libraries on most hardware. The binary package
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includes the atlas libraries as well as binary-compatible blas and
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lapack libraries that should work as a drop-in replacement for the
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standard ones (they are installed in /usr/lib{64}/atlas* rather than
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/usr/lib{64}).
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For 32bit x86 systems, the default atlas package on was built using Pentium Pro
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architectural defaults using just x87 math optimization. In addition to the
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base 32bit build, 4 ATLAS subpackages are built for 3Dnow, SSE, SSE2, and SSE3
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ix86 extensions, using architectural defaults obtained from Athlon K7, PIII,
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Pentium 4 with SSE2 extension and PENTIUM 4 with SSE3 extensions respectively.
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On 64bit x86 systems the default atlas package on was built with SSE2 optimization using architetural default made for AMD's HAMMER processor, and an additional
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SSE3-enabled subpackage was built also using architetural default made for AMD's HAMMER processor.
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This packaging allows multiple installation of different atlas sub-packages
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at the same time. The alternatives system (read 'man alternatives' for usage)
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is used in the -devel subpackages to select the appropriate location for the
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architectural dependent header files.
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This package is designed to build RPMs that are identical regardless
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of where they are compiled and that provide reasonable performance on
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a wide range of hardware. For users who want optimal performance on
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particular hardware, custom RPMs can be built from the source package
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by setting the RPM macro "enable_native_atlas" to a value of 1. This
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can be done from the command line as in the following example:
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rpmbuild -D "enable_native_atlas 1" --rebuild atlas-3.8.3-1.src.rpm
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This will cause the ATLAS build to use the achitectural default most
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appropriate for the system on which the package is to be built.
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@ -0,0 +1,47 @@
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Notes on the packaged version of ATLAS
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by Quentin Spencer
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updated: October 4, 2005
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updated by Deji Akingunola
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October 15, 2008
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updated by Deji Akingunola
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June 15, 2011
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updated by Frantisek Kluknavsky
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Nov 20, 2012
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Because ATLAS relies on compile-time optimizations to obtain improved
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performance over BLAS and LAPACK, the resulting binaries are closely
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tied to the hardware on which they are compiled, and can likely result
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in very poor performance on other hardware. For this reason,
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including a package like ATLAS in Fedora requires some compromises.
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Optimizing ATLAS for the most modern hardware can result in
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significant performance penalties for users using the same package on
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older hardware. A binary ATLAS package must perform reasonably well on the
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entire range of hardware on which it could potentially be installed.
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The result is a set of libraries that will not
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necessarily achieve optimal performance on any given hardware but
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should still offer significant performance gains over the reference
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BLAS and LAPACK libraries on most hardware.
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In addition to the base 32bit build, subpackages are built for SSE, SSE2,
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and SSE3 ix86 extensions.
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On 64bit x86 systems the default atlas package was built with SSE3
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optimization.
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This packaging allows multiple installation of different atlas sub-packages
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at the same time. The alternatives system (read 'man alternatives' for usage)
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is used in the -devel subpackages to select the appropriate location for the
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architectural dependent header files.
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For users who want optimal performance on
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particular hardware, custom RPMs can be built from the source package
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by setting the RPM macro "enable_native_atlas" to a value of 1. This
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can be done from the command line as in the following example:
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rpmbuild -D "enable_native_atlas 1" --rebuild atlas-3.8.3-1.src.rpm
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23
atlas.spec
23
atlas.spec
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@ -14,7 +14,7 @@ URL: http://math-atlas.sourceforge.net/
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Source0: http://downloads.sourceforge.net/math-atlas/%{name}%{version}.tar.bz2
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Source1: PPRO32.tgz
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#Source2: K7323DNow.tgz
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Source3: README.Fedora
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Source3: README.dist
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Source4: USII64.tgz
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Source5: USII32.tgz
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Source6: IBMz1032.tgz
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@ -43,7 +43,7 @@ well as a few routines from LAPACK.
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The performance improvements in ATLAS are obtained largely via
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compile-time optimizations and tend to be specific to a given hardware
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configuration. In order to package ATLAS for Fedora some compromises
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configuration. In order to package ATLAS some compromises
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are necessary so that good performance can be obtained on a variety
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of hardware. This set of ATLAS binary packages is therefore not
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necessarily optimal for any specific hardware configuration. However,
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@ -90,7 +90,7 @@ Linear Algebra Software).
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#description sse3
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#This package contains the ATLAS (Automatically Tuned Linear Algebra
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#Software) libraries compiled with optimizations for the SSE3
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#extensions to the x86_64 architecture. The base ATLAS builds in Fedora for the
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#extensions to the x86_64 architecture. The base ATLAS builds for the
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#x86_64 architecture are made for the SSE2 extensions.
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#package sse3-devel
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@ -165,8 +165,8 @@ Group: System Environment/Libraries
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%description sse2
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This package contains ATLAS (Automatically Tuned Linear Algebra Software)
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shared libraries compiled with optimizations for the SSE2
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extensions to the ix86 architecture. Fedora also produces ATLAS build with
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SSE(1) and SSE3 extensions.
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extensions to the ix86 architecture. ATLAS builds with
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SSE(1) and SSE3 extensions also exist.
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%package sse2-devel
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Summary: Development libraries for ATLAS with SSE2 extensions
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@ -201,7 +201,7 @@ Group: System Environment/Libraries
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%description sse3
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This package contains the ATLAS (Automatically Tuned Linear Algebra
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Software) libraries compiled with optimizations for the SSE3.
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Fedora also produces ATLAS build with SSE(1) and SSE2 extensions.
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ATLAS builds with SSE(1) and SSE2 extensions also exist.
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%package sse3-devel
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Summary: Development libraries for ATLAS with SSE3 extensions
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@ -598,7 +598,7 @@ fi
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%files
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%defattr(-,root,root,-)
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%doc doc/README.Fedora
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%doc doc/README.dist
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%dir %{_libdir}/atlas
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%{_libdir}/atlas/*.so
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%config(noreplace) /etc/ld.so.conf.d/atlas-%{_arch}.conf
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@ -670,7 +670,7 @@ fi
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%files sse2
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%defattr(-,root,root,-)
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%doc doc/README.Fedora
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%doc doc/README.dist
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%dir %{_libdir}/atlas-sse2
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%{_libdir}/atlas-sse2/*.so
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%config(noreplace) /etc/ld.so.conf.d/atlas-%{_arch}-sse2.conf
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@ -689,7 +689,7 @@ fi
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%files sse3
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%defattr(-,root,root,-)
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%doc doc/README.Fedora
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%doc doc/README.dist
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%dir %{_libdir}/atlas-sse3
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%{_libdir}/atlas-sse3/*.so
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%config(noreplace) /etc/ld.so.conf.d/atlas-%{_arch}-sse3.conf
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@ -711,7 +711,7 @@ fi
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%ifarch s390 s390x
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%files z10
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%defattr(-,root,root,-)
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%doc doc/README.Fedora
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%doc doc/README.dist
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%dir %{_libdir}/atlas-z10
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%{_libdir}/atlas-z10/*.so
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%config(noreplace) /etc/ld.so.conf.d/atlas-%{_arch}-z10.conf
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@ -730,7 +730,7 @@ fi
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%files z196
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%defattr(-,root,root,-)
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%doc doc/README.Fedora
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%doc doc/README.dist
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%dir %{_libdir}/atlas-z196
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%{_libdir}/atlas-z196/*.so
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%config(noreplace) /etc/ld.so.conf.d/atlas-%{_arch}-z196.conf
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@ -760,6 +760,7 @@ fi
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- Modified makefile to include build-id.
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- Disabled cpu throttling detection again (sorry, could not work on atlas
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otherwise, feel free to enable yet again - atlas-throttling.patch).
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- Removed mentions of "Fedora" to promote redistribution.
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- Modified parts of atlas.spec left in place, work still in progress,
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cleanup needed.
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