[GE issues] node fill-up issue

gascan211 gascan211 at gmail.com
Mon Dec 28 21:50:40 GMT 2009


Hi,

I want the default behavior of sge scheduler to use the least used nodes first and then fill up the available slots on a node. 

queue_sort_method is set to load and np_load_avg=0.50 (normal usage)

But nodes are being filled up instead of jobs being scheduled on the least used nodes. It happens only when jobs are submitted in batches. If jobs are submitted at various intervals, they are being dispatched to different nodes. I.e. submit a job, wait until it is running, submit the next job, and so on.

We haven't seen this issue in SGE6.0u9. Is this a bug in 6.2u1

Thanks,
Kumar

Scheduler configuration:

algorithm                         default
schedule_interval                 0:0:5
maxujobs                          0
queue_sort_method                 load
job_load_adjustments              np_load_avg=0.5
load_adjustment_decay_time        0:7:30
load_formula                      slots
schedd_job_info                   false
flush_submit_sec                  0
flush_finish_sec                  0
params                            none
reprioritize_interval             0:0:0
halftime                          168
usage_weight_list                 cpu=1.000000,mem=0.000000,io=0.000000
compensation_factor               5.000000
weight_user                       0.250000
weight_project                    0.250000
weight_department                 0.250000
weight_job                        0.250000
weight_tickets_functional         0
weight_tickets_share              0
share_override_tickets            TRUE
share_functional_shares           TRUE
max_functional_jobs_to_schedule   200
report_pjob_tickets               TRUE
max_pending_tasks_per_job         50
halflife_decay_list               none
policy_hierarchy                  OFS
weight_ticket                     0.500000
weight_waiting_time               0.278000
weight_deadline                   3600000.000000
weight_urgency                    0.500000
weight_priority                   0.000000
max_reservation                   0
default_duration                  INFINITY

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