[mvapich-discuss] mvapich2-0.9.8 blacs problems

[Dhabaleswar Panda]

Hi, 

> >>>  SARA is testing the openib stack with mvapich2.
> >>>
> >>>  We have problems with installing the blacs library 
> >>> (www.netlib.org/blacs) it compiles and links correct, some tests namely:
> >>>   * The BSBR test with double precision fails with certain topologies.
> >>>
> >>>  We tried the GNU compilers (gcc, g77) and the INTEL compilers (icc, 
> >>> ifort).
> >>>
> >>> Please help?
> >>>
> >>> PS)
> >>> On our topspin/cisco infiniband stack with their mpi implementation 
> >>> there are no problems.
> >>>
> >>
> >> Just an update i tried mvapich-0.9.9-beta with openib and blacs. and 
> >> this runs without any problems.
> >>
> >>
> > 
> > We also tried the MPICH2 version 1.0.5p3 without any problems.  I will 
> > now test the mvapich2 trunk version and i will let you know.
> > 
> > Regards
> > 
> 
> Just tested the MVAPICH2 trunk version and this fails also at the double 
> precision tests. I am clueless at this point. Are there sites using 
> blacs/scalapack with mvapich2?

Thanks for reporting these issues. Since yesterday, we have been
looking at this issue. We hope to keep you updated on our findings and
fixes as soon as possible.

Best Regards, 

DK

> 
> we going back to MVAPICH1 for blacs and acalapack.
> 
> {{{
> INTEGER BSBR TESTS: BEGIN.
> INTEGER BSBR TESTS: 9600 TESTS; 3600 PASSED, 6000 SKIPPED,    0 FAILED.
> 
> 
> REAL BSBR TESTS: BEGIN.
> REAL BSBR TESTS: 9600 TESTS; 3600 PASSED, 6000 SKIPPED,    0 FAILED.
> 
> 
> DOUBLE PRECISION BSBR TESTS: BEGIN.
> 
> PROCESS {   0,   0} REPORTS ERRORS IN TEST#  1370:
>     Invalid element at A(   2,   1):
>     Expected=-.1559522301235248    ; Received=-.2000000000000000E-01
>     Invalid element at A(   3,   1):
>     Expected=-.2849901817584808    ; Received=-.2000000000000000E-01
>     Invalid element at A(   4,   1):
>     Expected=-.1751754689686109    ; Received=-.2000000000000000E-01
>     Invalid element at A(   5,   1):
>     Expected=-.8236521034076603    ; Received=-.2000000000000000E-01
> }}}
> 
> -- 
> ********************************************************************
> *                                                                  *
> *  Bas van der Vlies                     e-mail: basv at sara.nl      *
> *  SARA - Academic Computing Services    phone:  +31 20 592 8012   *
> *  Kruislaan 415                         fax:    +31 20 6683167    *
> *  1098 SJ Amsterdam                                               *
> *                                                                  *
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