[mvapich-discuss] program hanged using mvapich with large number of processes

[Weimin Wang]

Hello, Dhabaleswar,
I have solved the problem following your advice. I recompiled mvapich2 with
gen2 option and could start 80 processes now. Thank you very much!

However, I got another questions. When I run the job in node73 which is a
node for user log-in, everything is fine. However, I got an error for other
nodes:

wmwang at node2:~/test> /data02/home/wmwang/test/mvapich2/bin/mpicc -o cpi
cpi.c
/usr/bin/ld: cannot find -lrdmacm

It may be due to that the librdmacm is not in publich directory for all
nodes. I have installed this libradmacm in the publich directory. Here is my
question: how could I add library directories for mvapich2?
Bests,
Weimin
On Sat, Jan 23, 2010 at 10:18 PM, Dhabaleswar Panda <
panda at cse.ohio-state.edu> wrote:

> You are using the uDAPL interface of MVAPICH2 stack. All our designs and
> developments with latest features are taking place on the
> most-commonly-used OpenFabrics-Gen2 (IB/iWARP) interface. You should start
> using this interface to get the best performance and scalability on your
> cluster. You can use this interface and let us know whether you see the
> problem or not.
>
> Thanks,
>
> DK
>
>
>
>
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