[Pw_forum] parallel matrix problem

[Marc Segovia]

Dear all

Up to now we are using espresso-4.0.4 serial 32 bit, a few days ago, we 
install espresso-4.1 parallel 64 bit, we made smalls tests with pw.x 
which runs well, now I try to do some cp.x, but an error appear likes below.

from  cyc2blk_redist  : error #         1
      inconsistent block dim nb

I track the subroutine, error statement and variable definition, but 
still is unclear which is wrong, my guess is that some problem with 
parallel libraries , can someone guide me a bit.

Thanking in advance your help

Marc

SUBROUTINE cyc2blk_redist( n, a, lda, nca, b, ldb, ncb, desc )
   !
   !  Parallel square matrix redistribution.
   !  A (input) is cyclically distributed by rows across processors
   !  B (output) is distributed by block across 2D processors grid
 !
   ALLOCATE( sndbuf( nb/nproc+2, nb ) )
   ALLOCATE( rcvbuf( nb/nproc+2, nb, nproc ) )

   DO ip = 0, nproc - 1
      !
      IF( ip_desc( nlax_ , ip + 1 ) /= nb ) &
         CALL errore( ' cyc2blk_redist ', ' inconsistent block dim nb ', 1 )

 np = desc( la_npr_ )  !  dimension of the processor mesh
   nb = desc( nlax_ )    !  leading dimension of the local matrix block
   me = desc( la_me_ )   !  my processor id (starting from 0)
   comm_a = desc( la_comm_ )
   nproc  = desc( la_npr_ ) * desc( la_npc_ )



-- 
-------------------------------------------------------------
Marc E. Segovia Becker, PhD,Ch.Eng
Computational Chemistry and Biology Group, Detema
Facultad de Quimica
Universidad de la Republica
CC 1157A
11800 Montevideo
Uruguay
www.ccbg.fq.edu.uy
--------------------------------------------------------------

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