SCALAPACK-2.0.2 and BLACS errata file

updated on Thu Nov 26 2013

maintained by Julien Langou, U. Colorado Denver and Julie Langou, U. Tennessee

LAPACK errata file

Wishlist

RED means BUG WAS CONFIRMED but IT IS STILL HERE

ORANGE means BUG WAS NOT CONFIRMED

GREEN means BUG WAS CORRECTED :

correction will be included in next release
bug fix available in LAPACK SVN repository

bug :: Missing initialization of ICTXT in a few ScaLAPACK routines

CORRECTED
Present in ScaLAPACK
Bug reported by Dmitry Baksheev (Intel) on Nov 10th 2015
Link: http://icl.cs.utk.edu/lapack-forum/viewtopic.php?f=13&t=4838
committed by Julie on Nov 10 2015 (SVN: r202).

bug :: Incorrect call of CHK1MAT in pzheevd.f

CORRECTED
Present in ScaLAPACK
Bug reported by Dmitry Baksheev (Intel) on Nov 10th 2015
Link: http://icl.cs.utk.edu/lapack-forum/viewtopic.php?f=13&t=4837
committed by Julie on Nov 10 2015 (SVN: r201).

bug :: bug in dgamx2d (triggered in parpack)

NOT CONFIRMED
Present in ScaLAPACK
Bug reported by davydden on Jul 22nd
Link: http://icl.cs.utk.edu/lapack-forum/viewtopic.php?f=13&t=4676
Not Assigned

bug :: Wrong XERBLA call in pshseqr, pdhseqr, psgebal, pdgebal functions

CORRECTED
reported by Bjorn Adlerborn on Scalapack mailing list.
reported by eugene Chereshnev on LAPACK Forum
fixed from Rodney and Julie
committed by Rodney on Feb 5 2013 (SVN: r192).
committed by Julie on Oct 10 2014 and Apr 30 2015 (SVN: r199 and r200).

bug :: PDLAQR1 possible bug?

NOT CONFIRMED
reported on the LAPACK forum by Sieg Young
see Forum topic 4334
Not Assigned

bug :: Diagonal element of R not arranged correctly for complex pivoted QR factorization

CONFIRMED
reported on the scalapack mailing list
see ScaLAPACK Mailing list msg 254
confirmed by Rodney, Sven and Jim on Thu Oct 20 2011

bug :: uninitialized variables, bug in p?trsm, and problem in xzsep testing (timeout)

CORRECTED
reported on the forum
fix provided by Joost VandeVondele
see forum topic 588
see forum topic 2625
confirmed by Julie Langou on Thu Aug 16 2011
committed by Julie on Thu Jul 07 2011 (SVN: r92).

bug :: ROFFZ and IZROW are not initialized in case WANTZ evaluates to .FALSE.

CORRECTED
confirmed by Julie Langou on Thu Jul 07 2011
fix from Julie
committed by Julie on Thu Jul 07 2011 (SVN: r92).

bug :: ScaLAPACK does not handle matrix larger than N > sqrt(2^31)

CORRECTED
Reported several times
The following fix works fine. The fix has been provided by John Moyart from CNES, France. It works great for all who have tried it.

replaced Mptr() definition:
  #define    Mptr( a_, i_, j_, lda_, siz_ ) \ ( (a_) + ( ( (i_)+(j_)*(lda_) )*(siz_) ) )
by:
  #define    Mptr( a_, i_, j_, lda_, siz_ ) \ ( (a_) + ( (off_t) ( (off_t)(i_)+(off_t)(j_)*(off_t)(lda_))*(off_t)(siz_) ) )

Other fix: compile scalapack using 64-bit integers
committed by Julien on Sat Sep 12 2009 (SVN: r69).

bug :: workspace query not correct for IWORK in PDGECON when no local rows in process row

CORRECTED
reported by Jill Reese (MathWorks) on Fri Aug 28 2009
confirmed by Julien Langou on Fri Aug 28 2009
fix from Jill and Julien
committed by Julien on Sat Sep 12 2009 (SVN: r68).

BLACS

bug :: bug

NOT CONFIRMED
reported by Sergey Kuznetsov (Intel)
directly sent to Julien

bug :: bug in dlasd4/slasd4

CORRECTED
reported by Åke Sandgren (HPC2N, Umeå, Sweden) on Tue Mar 3 2009
see forum topic 917

bug :: false comments in igamx2d

CORRECTED
reported by Åke Sandgren (HPC2N, Umeå, Sweden) on Tue Mar 3 2009
see forum topic 917