From: Konstantin Kleisouris (kkonst_at_cs_dot_rutgers_dot_edu)
Date: Tue Sep 19 2006 - 18:06:48 PDT
Hi everyone,
I have two concerns with berkely UPC.
I am trying to run a UPC program on a cluster of linux machines.
However, when I type the command:
> upcrun -n 8 a.out
I get the message you see below (see after the dashed line). I have
compiled my program with -pthreads=4. I really cannot figure out what
the problem is. I have generated ssh keys so that when you ssh from one
machine to another you don't have to type your password. Also, I have
set the UPC_NODES variable to a list of machines in the cluster. I
believe that the program (a.out) does not even start executing, because
I am supposed to give some arguments to it, but it does not ask me for
them (as it should).
Also, if I compile my program with -pthreads=1 and then without
-pthreads at all (so, in both cases there is only one thread) I see
difference in performance. In the first case (-pthreads=1) the program
is slower than if I don't use -pthreads at all. I noticed that even
portions of the UPC program where threads access only private data (for
instance arrays that have been generated with malloc) take longer to
execute. I am measuring time with bupc_ticks_now() and
bupc_ticks_to_us(). Does anyone now why? Even if I do -pthreads=1 and
-T=1 this is still slower than if I don't use -pthreads at all.
Sincerely,
Kosta
----------------------------------------------------------------
AMUDP sendPacket returning an error code: AM_ERR_RESOURCE (Problem with
requested resource)
from function sendPacket
at amudp_reqrep.cpp:93
reason: Invalid argument
AMUDP AMUDP_RequestGeneric returning an error code: AM_ERR_RESOURCE
(Problem with requested resource)
at amudp_reqrep.cpp:1200
GASNet gasnetc_AMRequestShortM encountered an AM Error:
AM_ERR_RESOURCE(3)
at
/home/kkonst/UPC/berkeley_upc-2.2.2/gasnet/udp-conduit/gasnet_core.c:564
GASNet gasnetc_AMRequestShortM returning an error code:
GASNET_ERR_RESOURCE (Problem with requested resource)
at
/home/kkonst/UPC/berkeley_upc-2.2.2/gasnet/udp-conduit/gasnet_core.c:568
*** FATAL ERROR:
GASNet encountered an error: GASNET_ERR_RESOURCE(3)
while calling: gasnet_AMRequestShort4(peer,
gasneti_handleridx(gasnete_ambarrier_notify_reqh), phase, 0, id, flags)
at gasnete_barrier_notify() at
/home/kkonst/UPC/berkeley_upc-2.2.2/gasnet/extended-ref/gasnet_extended_refbarrier.c:197
*** Caught a fatal signal: SIGABRT(6) on node 0/2