Sorry, that was hwloc 1.7.0a1.

On Tue, 2013-02-12 at 21:50 -0700, Kenneth Lloyd wrote:
Brice,

I've compiled and run hwloc 1.6.1 on my development machine (Scientific Linux 6.2) currently with 1) GTX-480 and everything seems to be working perfectly.

[kalloyd@devhost ~]$ lstopo -v
<snip>
Bridge Host->PCI L#0 (P#0 buses=0000:[00-08])
    Bridge PCI->PCI (P#48 busid=0000:00:03.0 id=8086:340a class=0604(PCI_B) buses=0000:[02-02] PCIVendor="Intel Corporation" PCIDevice="5520/5500/X58 I/O Hub PCI Express Root Port 3") "Intel Corporation 5520/5500/X58 I/O Hub PCI Express Root Port 3"
      PCI 10de:06c0 (P#8192 busid=0000:02:00.0 class=0300(VGA) PCIVendor="nVidia Corporation" PCIDevice="GF100 [GeForce GTX 480]") "nVidia Corporation GF100 [GeForce GTX 480]"
<snip>

lstopo --whole-io shows much more detail, including both sides of the GTX-480.

I haven't yet written an OpenMPI, OpenGL program to see how it works across a small cluster, but that will give me something to do in my spare time ...

Ken Lloyd

On Tue, 2013-02-12 at 23:37 +0100, Brice Goglin wrote:
Stefan (or anybody else interested in hwloc GPU support),
Did you have any chance to look at this?
Brice



Le 01/02/2013 14:57, Brice Goglin a écrit :
> I just committed big changes to the display branch (and I also merged
> latest trunk changes).
>
> lstopo will now report things like this:
>         PCI 10de:06d1
>           GPU L#0 ":0.0"
>           GPU L#1 "cuda0"
>           GPU L#2 "nvml0"
>
>
> The changes include:
>
> 1) We don't have a "display" specific OS device anymore, it's just
> another kind of GPU among cuda, opencl and nvml. The name is the X
> server display name. There are string attributes in these new GL GPU OS
> devices (lstopo -v):
>   GPU L#9 (Backend=GL GPUVendor="NVIDIA Corporation" GPUModel="Tesla
> C2050") ":0.2"
>
> 2) The gl component is now buildable as a plugin
>
> 3) Given (2), we can't expose internal GL routines in the public API. So
> hwloc/gl.h is just made of inline helpers as any other hwloc/foo.h. It
> now contains functions to convert between displays (name or port/device)
> and hwloc OS devices:
>
> hwloc_obj_t hwloc_gl_get_display_osdev_by_port_device(hwloc_topology_t
> topology, unsigned port, unsigned device)
> hwloc_obj_t hwloc_gl_get_display_osdev_by_name(hwloc_topology_t
> topology, const char *name)
> int hwloc_gl_get_display_by_osdev(hwloc_topology_t topology, hwloc_obj_t
> osdev,unsigned *port, unsigned *device)
>
> If you really need the PCI device, just use osdev->parent as documented.
> If you need the locality, use hwloc_get_non_io_ancestor(topology,
> osdev)->cpuset
> See tests/gl.c for examples.
>
> Please review hwloc/gl.h and let me know if that works for you. I hope I
> used the words port/device/server/screen as expected.
>
> The last thing on my TODO list is to decide is whether we keep the "GL"
> name or switch to something among display/X11/X/... for filenames and
> function names.
>
> Brice
>

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==============
Kenneth A. Lloyd, Jr.
CEO - Director of Systems Science
Watt Systems Technologies Inc.
Albuquerque, NM US

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==============
Kenneth A. Lloyd, Jr.
CEO - Director of Systems Science
Watt Systems Technologies Inc.
Albuquerque, NM US

This e-mail is covered by the Electronic Communications Privacy Act, 18 U.S.C. 2510-2521 and is intended only for the addressee named above. It may contain privileged or confidential information. If you are not the addressee you must not copy, distribute, disclose or use any of the information in it. If you have received it in error please delete it and immediately notify the sender.