[Beowulf] hang-up of HPC Challenge

[Mikhail Kuzminsky]

... and "single" (all the input parameters are "by one") HPL run 
w/large N=40000 hangs before final output strings:

"Single" HPL run, N=40000 

  =============================================================================
   ============================================================================
T/V                N    NB     P     Q               Time 
            Gflops
----------------------------------------------------------------------------
WR11C2R4       40000   100     2     4            1251.02 
         3.411e+01
----------------------------------------------------------------------------
||Ax-b||_oo / ( eps * ||A||_1  * N        ) =        0.0245527 ...... 
PASSED
||Ax-b||_oo / ( eps * ||A||_1  * ||x||_1  ) =        0.0224500 ...... 
PASSED
||Ax-b||_oo / ( eps * ||A||_oo * ||x||_oo ) =        0.0044085 ...... 
PASSED

- hangs here ... 

Mikhail