[MPICH] ROMIO. Two-phased run-time error

[Francisco Javier García Blas]

Hi all,

We did some measurements with BTIO over PVFS and PVFS2 on lonestar at 
TACC (http://www.tacc.utexas.edu/services/userguides/lonestar/).

We launched BTIO with 4 proccess and  but when we launch BTIO with 9 or 
more proceess the bench fail. We tried to run BTIO with PVFS, PVFS2 and 
unix file system but it falied too.

Debuging the error seems to be in collective writes. Two-phased does not 
invoke file primitives.

We use mpich2-1.0.5p4 and compile it with gcc version 3.4.6.

Any clue why this happens? 

Thanks a lot

-- 
--------------------------------------------------
Francisco Javier García Blas
Computer Architecture, Communications and Systems Area.
Computer Science Department. UNIVERSIDAD CARLOS III DE MADRID
Avda. de la Universidad, 30
28911 Leganés (Madrid), SPAIN
e-mail: fjblas at arcos.inf.uc3m.es
        fjblas at inf.uc3m.es
Phone:(+34) 916249104
FAX: (+34) 916249129
--------------------------------------------------