I have try the new flags with PGI and read ROMIO user guide.
Seems still not working with this.
However, I found there is a large file test in ROMIO directory.
This test is not working on my system.
There are some questions came out after try this and read the manual.
Althrough ROMIO is combine in MPICH(1.2.6), I am not very sure ROMIO was installed properly with MPICH standard install procedure.
Second, ROMIO seems only work with MPICH2.
I am not very sure about this.
If so, MPICH2 need to be installed.
I found MPI-2-C++ diretory in mpich install directory, also ROMIO.
Is this means these will be installed properly?
I have check the ROMIO directory and found "romioinstal"l script in “util”.
The default install path is /usr/local/romio.
If ROMIO is install properly, seems /usr/local/romio should be there.
But I can’t find this directory in /usr/local, even in /usr/local/mpich(my mpich install prefix).
So I wondering ROMIO and MPICH2 are not installed, this cause the CFLAGS won’t take any effects.
Sorry to ask you some questions not directly relating to PGI.
And thanks for your help.