On 07/07/2014 08:15 AM, Martyn Plummer wrote: > Dear Tom, > > The change in the Fedora RPM from using R's internal BLAS to external > BLAS means the Fedora R binary now fails one of R's regression tests, > specifically: tests/reg-BLAS.R. You can run this code by hand to verify > the issue. > > As noted in the R administration and Installation Manual, "R relies on > ISO/IEC 60559 compliance of an external BLAS. This can be broken if for > example the code assumes that terms with a zero factor are always zero > and do not need to be computed - whereas x*0 can be NaN. This is checked > in the test suite." > > The version of BLAS that comes with R contains patched versions of > DGBMV, DGEMM, and DGEMV. The patch has been in place since 2010. > Presumably R blas and reference BLAS have been divergent ever since. > > I guess this should be reported upstream as a BLAS bug. Recalling the > previous thread on openblas, I note that openblas does pass the > regression test.
Seems like it. In the interim, is there a patch handy, or do I need to try to untangle it from the R code? ~tom == ¸.·´¯`·.´¯`·.¸¸.·´¯`·.¸><(((º> OSAS @ Red Hat University Outreach || Fedora Special Projects || Fedora Legal
<<attachment: tcallawa.vcf>>
_______________________________________________ R-SIG-Fedora mailing list R-SIG-Fedora@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-fedora
