Open MPI logo

Hardware Locality Users' Mailing List Archives

  |   Home   |   Support   |   FAQ   |   all Hardware Locality Users mailing list

Subject: Re: [hwloc-users] Regarding the Dell 8 core machine with GPUs
From: Brice Goglin (Brice.Goglin_at_[hidden])
Date: 2013-11-18 06:24:59


(readding the list to CC).

OK, good to know it actually works.
v1.7.2 doesn't get any PCI device (and therefore no CUDA devices)
because you don't have PCI libraries/headers installed (see
"Installation" in http://www.open-mpi.org/projects/hwloc/doc/v1.8rc1/ ).
v1.8 has a new Linux-specific way to discover PCI devices, that's why it
works there.

Note that --whole-system isn't relevant here (it's only about showing
processors/cores that have been reserved by the administrator).
--whole-io isn't strictly needed either (GPUs are always shown by
default in lstopo).

cpuinfo.txt doesn't contain the kernel version ("uname -a" would be more
useful) but I don't need this information anymore anyway.

Looks like I am ready to release the final hwloc v1.8 now :)

Brice

Le 18/11/2013 04:17, Solibakke Per Bjarte a écrit :
> Dear Brice Goglin
>
> Sorry, there must have been a version problem on my machine from 1.7.2
> to 1.8rc1. The lstopo —whole-system now report the bridges and the
> CoProc L#2 “cuda0” + pci´s +++
>
> Here is the answers for your questions and the attached bz2-file (if
> you are interested)?
>
> First question is UBUNTU 12.04 with CUDA-5.5 installed.
> Open-MPI-1.7.3 for parallell processing and hwloc for the mpirun-command.
> Kernel: cpu_info.txt
>
> The hwloc version 1.8rc1 – version and “—io” worked well.
> The lstopo —whole –io solibakke did also work well.
>
> The bz2-file is attached (68K)
>
> I will now “—use-hwthread-cpus" in the mpirun-command.
>
> Thank you.
>
> Regards
> PBSolibakke
>
> Dr.econ Per Bjarte Solibakke
> Professor
> per.b.solibakke_at_[hidden]
> Cell phone: 004790035606
> Phone: 004771214238
>
> From: Brice Goglin <Brice.Goglin_at_[hidden] <mailto:Brice.Goglin_at_[hidden]>>
> Date: Monday 18 November 2013 11:14
> To: Per B Solibakke <per.b.solibakke_at_[hidden]
> <mailto:per.b.solibakke_at_[hidden]>>
> Subject: Re: Regarding the Dell 8 core machine with GPUs
>
> --io is only in hwloc v1.8, did you use this one?
> I can't do anything with the tarball unless you pass this option.
> Also you forgot to reply to the other questions :)
>
> Brice
>
>
>
> Le 18/11/2013 03:12, Solibakke Per Bjarte a écrit :
>> Dear Brice Goglin
>>
>> The “—io” -option did not work. I therefore produced the command
>> without the “—io” - option.
>> It is attached to this e-mail.
>>
>> (the file size is 13K)
>>
>> Regards
>> PBSolibakke
>>
>> Dr.econ Per Bjarte Solibakke
>> Professor
>> per.b.solibakke_at_[hidden]
>> Cell phone: 004790035606
>> Phone: 004771214238
>