[GHC] #14956: NUMA not detected on Aarch64 NUMA machine

[GHC]

#14956: NUMA not detected on Aarch64 NUMA machine
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        Reporter:  varosi          |                Owner:  (none)
            Type:  bug             |               Status:  new
        Priority:  normal          |            Milestone:
       Component:  Runtime System  |              Version:  8.4.1
      Resolution:                  |             Keywords:
Operating System:  Linux           |         Architecture:  aarch64
 Type of failure:  None/Unknown    |            Test Case:
      Blocked By:                  |             Blocking:
 Related Tickets:                  |  Differential Rev(s):
       Wiki Page:                  |
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Description changed by varosi:

Old description:

> {{{
> # lscpu
> Architecture:          aarch64
> Byte Order:            Little Endian
> CPU(s):                96
> On-line CPU(s) list:   0-95
> Thread(s) per core:    1
> Core(s) per socket:    48
> Socket(s):             2
> NUMA node(s):          2
> L1d cache:             32K
> L1i cache:             78K
> L2 cache:              16384K
> NUMA node0 CPU(s):     0-47
> NUMA node1 CPU(s):     48-95
>
> # ./cgraytrace_prof_thread +RTS -s -A40m -qn24 --numa
> cgraytrace_prof_thread: --numa: OS reports NUMA is not available
> cgraytrace_prof_thread:
> cgraytrace_prof_thread: Usage: <prog> <args> [+RTS <rtsopts> | -RTS
> <args>] ... --RTS <args>
> ...
> }}}

New description:

 Ubuntu 16 LTS

 {{{
 # lscpu
 Architecture:          aarch64
 Byte Order:            Little Endian
 CPU(s):                96
 On-line CPU(s) list:   0-95
 Thread(s) per core:    1
 Core(s) per socket:    48
 Socket(s):             2
 NUMA node(s):          2
 L1d cache:             32K
 L1i cache:             78K
 L2 cache:              16384K
 NUMA node0 CPU(s):     0-47
 NUMA node1 CPU(s):     48-95

 # ./cgraytrace_prof_thread +RTS -s -A40m -qn24 --numa
 cgraytrace_prof_thread: --numa: OS reports NUMA is not available
 cgraytrace_prof_thread:
 cgraytrace_prof_thread: Usage: <prog> <args> [+RTS <rtsopts> | -RTS
 <args>] ... --RTS <args>
 ...
 }}}

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Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/14956#comment:1>
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