Re: [OMPI devel] About Marshalling and Umarshalling

2012-11-04 Thread Santhosh Kokala
ot;Unmashalling". Otherwise, it is not clear to him or others exactly what you are asking, because there are multiple possible meanings for those terms. -Paul On Sun, Nov 4, 2012 at 7:56 PM, Santhosh Kokala mailto:santhosh.kok...@riverbed.com>> wrote: I wanted to know how does Open

Re: [OMPI devel] About Marshalling and Umarshalling

2012-11-04 Thread Santhosh Kokala
19 PM, Santhosh Kokala mailto:santhosh.kok...@riverbed.com>> wrote: Hi All, Does OpenMPI support Marshalling/Unmarshalling? If so does it use ideal style language? If not how does it support heterogenous hosts? Santhosh ___ devel mailing list de...@o

[OMPI devel] About Marshalling and Umarshalling

2012-11-04 Thread Santhosh Kokala
Hi All, Does OpenMPI support Marshalling/Unmarshalling? If so does it use ideal style language? If not how does it support heterogenous hosts? Santhosh

[OMPI devel] MPI_Reduce() is losing precision

2012-10-15 Thread Santhosh Kokala
Hi All, I am having a strange problem with the floating precision. I get correct precision when I launch with one process, but when the same code is launched with 2 or more process I am losing precision in MPI_Redcue(..., MPI_FLOAT, MPI_SUM..); call. Output from my code (admin)host:~$ mpirun -n

Re: [OMPI devel] MPI_Reduce Hangs in my Application

2012-10-10 Thread Santhosh Kokala
BTL gets confused by your virtual interfaces (vmnet?). Try to limit the used interfaces using the "--mca btl_tcp_if_include eth0" argument. Let us know if this solves your issue. Thanks, george. On Oct 10, 2012, at 18:54 , Santhosh Kokala mailto:santhosh.kok...@riverbed.c

Re: [OMPI devel] MPI_Reduce Hangs in my Application

2012-10-10 Thread Santhosh Kokala
many interfaces? Thanks, george. On Oct 10, 2012, at 09:30 , Santhosh Kokala mailto:santhosh.kok...@riverbed.com>> wrote: I have a problem with my MPI code, it hangs when the code is run on multiple nodes. It successfullycompletes when run on a single node. I am not sure how to debu

[OMPI devel] MPI_Reduce Hangs in my Application

2012-10-10 Thread Santhosh Kokala
I have a problem with my MPI code, it hangs when the code is run on multiple nodes. It successfullycompletes when run on a single node. I am not sure how to debug this. Can someone help me debug this issue? Program Usage: mpicc -o string string.cpp mpirun -np 4 -npernode 2 -hostfile hosts ./strin