[fpc-devel] MPI (MPICH) - Leopard

[jideel]

Hi all.
I'm new to this list.
I followed the instructions for using MPICH (1.0.7) located here : http://wiki.freepascal.org/MPICH 
, and it works perfectly under Linux (Centos 5.2) and Win32 (XP).
However, trying to do the same thing on Leopard (10.5.5) fails.
First, to compile well, i had to add the following directive :  
{$Linklib mpi} to the HelloWorld1 sample. If i don't, ld outputs :  
"Symbol not found : _MPI_Init" ...: the library cannot be found, even  
if i have added the library path to /etc/fpc.cfg, or if i put the  
library in location already covered by the paths (i checked the  
link.res file). I checked libpmpi.a with nm, and symbols are well  
present.
After having added the {$Linklib mpi} directive (or manually change  
the ppaslink.sh file or even directly using ld), it compiles well, but  
can't run.
Here's the behaviour :

nemes:mpich2 jideel$ mpiexec -n 1 HelloWorld1
[nemes:00407] *** Process received signal ***
[nemes:00407] Signal: Segmentation fault (11)
[nemes:00407] Signal code: Address not mapped (1)
[nemes:00407] Failing at address: 0x44000088
[ 1] [0xbffff4d8, 0x44000088] (-P-)
[ 2] (PASCALMAIN + 0x45) [0xbffff4f8, 0x00001705]
[ 3] (FPC_SYSTEMMAIN + 0x45) [0xbffff508, 0x0001b475]
[ 4] (start + 0xfc) [0xbffff548, 0x0000169c]
[ 5] (start + 0x29) [0xbffff56c, 0x000015c9]
[ 6] [0x00000000, 0x00000001] (FP-)
[nemes:00407] *** End of error message ***
mpiexec noticed that job rank 0 with PID 407 on node nemes.local  
exited on signal 11 (Segmentation fault).
nemes:mpich2 jideel$

if i use gdb, it outputs :

Reading symbols for shared libraries . done
....
Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_INVALID_ADDRESS at address: 0x44000088
0x000df006 in MPI_Comm_rank ()


Platform is a Macbook Pro Intel Core 2 Duo, Xcode 3.0 installed.

I checked there was no other MPI libraries that could conflict, it  
doesn't seems there is.

I tried all the manipulations either from Lazarus (0.9.27) or directly  
from command line, using fpc and a modified Makefile to 'cut' Lazarus  
component from the build process, behaviour is the same.

I checked other forums, there's somewhat similar problems, but with  
openmpi, or some other libraries, but no solution provided.

Any idea or suggestion are welcome
Thanks.
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