Charm++ parallel programming system

[Gengbin Zheng <zhenggb AT gmail.com>]

Hi Junchao,

 Can you send us the nodelist file it used?
>From the output below, it looks like some of the nodes you only have 8
cores allocated, which is weird.  btw, how is your job script look
like?

Gengbin

On Wed, Aug 10, 2011 at 10:06 AM, Junchao Zhang 
<junchao.zhang AT gmail.com>
 wrote:
> Hi,
>   When I run Charm on Ranger of teragrid, I met some problems. I built charm
> with  ./build charm++ net-linux-x86_64  ibverbs icc
>   I need 432 cores to run an application, ChaNGa.  Each node has 16 cores,
> so 27 nodes are enough, but charm says running on 28 nodes.
>
> charmnodes >nodelist
> ./charmrun ++scalable-start +p 432 ./ChaNGa $HOME/input/lambb.param
>  +balancer OrbLB
> Charmrun> scalable start enabled.
> Charmrun> IBVERBS version of charmrun
> Warning> Randomization of stack pointer is turned on in kernel, thread
> migration may not work!
> Charm++: scheduler running in netpoll mode.
> Charm++> Running on 28 unique compute nodes (16-way SMP).
> ...
> Chip #22: 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367
> Chip #23: 368 369 370 371 372 373 374 375
> Chip #24: 376 377 378 379 380 381 382 383
>
>
> Also, I find many messages like
>
> OrbLB Info> PE 6 with 52.525892 background load will have 0 object.
> OrbLB Info> PE 8 with 55.647333 background load will have 0 object.
> OrbLB Info> PE 10 with 85.024853 background load will have 0 object.
>
>  I also find the execution time is unreasonably long.
>  Does it imply something wrong?  Could someone help me?
> Thanks a lot
> -- Junchao Zhang
>
>
> --
> -- Junchao Zhang
>
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