Bug 171 - discontinuous cpulist unsupported by numa_node
: discontinuous cpulist unsupported by numa_node
Status: NEW
Product: TORQUE
: 3.0.x
: PC Linux
: P5 normal
Assigned To: Ken Nielson
  Show dependency treegraph
Reported: 2011-12-29 02:03 MST by monson
Modified: 2011-12-29 02:04 MST (History)
1 user (show)

See Also:

patch to fix discontinuous cpulist (7.10 KB, patch)
2011-12-29 02:04 MST, monson
Details | Diff


You need to log in before you can comment on or make changes to this bug.

Description monson 2011-12-29 02:03:19 MST
Now TORQUE uses struct numa_node.cpu_offset and numa_node.num_cpus to describe
cpuIDs, which precondition the cpu list is continuous, the same as mems.
However, according to cpuset interface, cpu list like cpus=1,5-6,7-9,13 is
valid. At lease the layout topology of my server reads
cpus=0,4,8,12,16,20     mem=0
cpus=24,28,32,36,40,44  mem=1
cpus=3,7,11,15,19,23    mem=2
cpus=27,31,35,39,43,47  mem=3
cpus=2,6,10,14,18,22    mem=4
cpus=26,30,34,38,42,46  mem=5
cpus=1,5,9,13,17,21     mem=6
cpus=25,29,33,37,41,45  mem=7

So I make a patch which uses numa_node.cpu_list and numa_node.mem_list to
describe discontinuous cpulist and memlist. 

The best struct to describe cpulist is bitmap instead of int array, which can
avoid duplicate cpuIDs.
Comment 1 monson 2011-12-29 02:04:54 MST
Created an attachment (id=100) [details]
patch to fix discontinuous cpulist