[torqueusers] Jobs won't start on free time-shared nodes

Nobuyuki Yamaguchi nyama at opentech.co.jp
Thu Oct 29 02:06:16 MDT 2009


Hi,

I'm trying to execute jobs on time-shared nodes on keeping equal load
avarage with pbs_sched on Torque v.2.3.7.  But at first the jobs won't
start on the nodes even though their status are shown free and load
averages are apparently low.  And then, the queued jobs runs
occasionally... I cannot figure out what bring them to be executable.

Anyone give me a clue?

I have only two computing nodes and a server.
My config files are as follows;

---
> cat server_priv/nodes
linux-q2c1:ts
linux-ht0b:ts

---
> cat mom_priv/config
$pbsserver  linux-ek2n
$logevent   255
$max_load   1.2
$ideal_load 1.0

---
> qmgr -c 'p s'
#
# Create queues and set their attributes.
#
#
# Create and define queue test_que
#
create queue test_que
set queue test_que queue_type = Execution
set queue test_que enabled = True
set queue test_que started = True
#
# Set server attributes.
#
set server scheduling = True
set server acl_hosts = linux-ek2n
set server default_queue = test_que
set server log_events = 511
set server mail_from = adm
set server scheduler_iteration = 30
set server node_check_rate = 150
set server tcp_timeout = 6
set server next_job_number = 627

---
> cat sched_priv/sched_config
round_robin: False	all

by_queue: True		prime
by_queue: True		non_prime

strict_fifo: false	ALL

fair_share: false	ALL

help_starving_jobs	true	ALL

sort_queues	true	ALL

load_balancing: true	ALL

sort_by: no_sort 	ALL

log_filter: 256

dedicated_prefix: ded

max_starve: 24:00:00

half_life: 24:00:00

unknown_shares: 10

sync_time: 1:00:00

---
> pbsnodes -a
linux-q2c1
     state = free
     np = 1
     ntype = time-shared
     status = opsys=linux,uname=Linux linux-q2c1 2.6.26.8-denx #4 Thu Dec 25 00:02:37 JST 2008 ppc,sessions=2252 2387 2452 2455 2462 2471 2515 2522,nsessions=8,nusers=1,idletime=8066,totmem=2876892kb,availmem=2744104kb,physmem=772388kb,ncpus=1,loadave=0.05,netload=121743595,state=free,jobs=,varattr=,rectime=1256801528

linux-ht0b
     state = free
     np = 1
     ntype = time-shared
     status = opsys=linux,uname=Linux linux-ht0b 2.6.26.8 #1 Tue Jun 16 16:55:24 JST 2009 ppc,sessions=18837 18972 19007 19042 19046 19053 19060 19067 19113 27713 32105,nsessions=11,nusers=1,idletime=60,totmem=2876892kb,availmem=2732068kb,physmem=772388kb,ncpus=1,loadave=0.08,netload=162169974,state=free,jobs=,varattr=,rectime=1256801529


Thank you.

Nobuyuki Yamaguchi
--


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