Bug 1222079

Summary:	Please install libcblas.a
Product:	[Fedora] Fedora	Reporter:	Jaroslav Škarvada <jskarvad>
Component:	atlas	Assignee:	Frantisek Kluknavsky <fkluknav>
Status:	CLOSED RAWHIDE	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	rawhide	CC:	c.david86, dakingun, davids, fkluknav
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Last Closed:	2015-05-20 14:33:21 UTC	Type:	Bug
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Description Jaroslav Škarvada 2015-05-15 17:15:01 UTC

Description of problem:
The libcblas.a is built, but not installed. Please install it. The header for cblas is already in the devel package, but it is unusable if there is no cblas library.

Version-Release number of selected component (if applicable):
atlas-3.10.2-1.fc23

How reproducible:
Always

Steps to Reproduce:
1. Check buildlog for libcblas.a
2. Check resultin RPMs for libcblas.a

Actual results:
libcblas is built but not packed to the RPM

Expected results:
libcblas is packed in the RPM

Additional info:

Comment 1 Jaroslav Škarvada 2015-05-15 17:15:54 UTC

It's blocking building of the hpl package on secondary arches.

Comment 2 Jaroslav Škarvada 2015-05-15 17:26:34 UTC

Also isn't possible to built the libs as shared?

Comment 3 Frantisek Kluknavsky 2015-05-19 15:53:21 UTC

Shared lib is built and shipped as customary in Fedora. Build log for x86_64 (https://kojipkgs.fedoraproject.org//packages/atlas/3.10.2/1.fc23/data/logs/x86_64/build.log) says:

"""
/usr/bin/gcc  -g -Wa,--noexecstack -fPIC -m64 -shared -o libsatlas.so.3.10  \
           \
           -Wl,-soname,"libsatlas.so.3" \
           -Wl,--whole-archive liblapack.a libf77blas.a libcblas.a libatlas.a /builddir/build/BUILD/ATLAS/liblapack_pic_pruned.a -Wl,--no-whole-archive -L/usr/lib/gcc/x86_64-redhat-linux/5.1.1 -lgfortran  -lc -lpthread -lm -lgcc
"""

Latest upstream decision is to link everything together and create only one big library to simplify linking. Actually there are two in Fedora, one single-threaded and one multithreaded, choose one (choose single-threaded if I can suggest).

You are right, atlas-static subpackage is useless with libcblas and other libraries missing.

Comment 4 Jaroslav Škarvada 2015-05-19 19:47:29 UTC

(In reply to Frantisek Kluknavsky from comment #3)
Thanks for info, I used libsatlas.so fallback on ARM.

Comment 5 Frantisek Kluknavsky 2015-05-20 14:33:21 UTC

http://koji.fedoraproject.org/koji/taskinfo?taskID=9805910
Included single-threaded interfaces.

Comment 6 Frantisek Kluknavsky 2015-05-24 21:39:04 UTC

Tried to benchmark the libraries to be sure that the correct optimal versions are packaged and not some artifacts from optimalization process. The results are not sure on my laptop. Could you please test that the static library gives the same performance as the dynamic library?

Comment 7 Jaroslav Škarvada 2015-05-25 09:34:48 UTC

Thanks.

Built-in check in hpl package returns the same results for both dynamic/static libraries and the non-optimized HPL benchmark also seems to return similar numbers.