Idgraf

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{{Tabs}}
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===== Overview =====
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Idgraf is a Bi-Socket Intel Xeon Westmere machine featuring 8 Nvidia GPU
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=== Privilegied commands ===
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* 2x Intel Xeon X5650 (Westmere, 6 cores each, total 12 cores)
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* 72 GB RAM
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* 8x coprocesseur Nvidia Tesla C2050
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See:
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* http://www.tyan.com/Barebones_FT72B7015_B7015F72V2R-N825%20%5BBTO%5D
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* http://www.tyan.com/datasheets/FT72-B7015_Datasheet.pdf
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* http://www.tyan.com/manuals/FT72-B7015_V2.1.pdf
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* http://www.nvidia.com/docs/IO/43395/NV_DS_Tesla_C2050_C2070_jul10_lores.pdf
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Beware that to support 8 GPU on a bi-socket Nehalem based machine, in addition to the need of 2 IOH connected via QPI buses, 2 PCI-e switches are required (PLXTech PEX8647 here), possibly limiting the bandwidth to the PCI-e cards.
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See:
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* http://www.qdpma.com/systemarchitecture/systemarchitecture_qpi.html
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* http://www.plxtech.com/products/expresslane/pex8647
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* http://www.plxtech.com/download/file/586‎
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== How to experiment ==
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=== Privileged commands ===
Currently, the following commands can be run via sudo in exclusive jobs:
Currently, the following commands can be run via sudo in exclusive jobs:
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* sudo /sbin/reboot
* sudo /sbin/reboot
* sudo /usr/bin/schedtool
* sudo /usr/bin/schedtool
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* sudo /usr/bin/opcontrol
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* sudo /usr/bin/perf
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* sudo /opt/likwid/bin/likwid-perfctr
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* sudo /opt/likwid/bin/likwid-topology
* sudo /usr/bin/nvidia-smi (please notify other users via the [mailto:digitalis@lists.grid5000.fr digitalis mailing list] if you change parameters on GPUs that will not be reset to default after a reboot, '''e.g. the memory ECC configuration''')
* sudo /usr/bin/nvidia-smi (please notify other users via the [mailto:digitalis@lists.grid5000.fr digitalis mailing list] if you change parameters on GPUs that will not be reset to default after a reboot, '''e.g. the memory ECC configuration''')
* sudo /usr/local/bin/ipmi-reset
* sudo /usr/local/bin/ipmi-reset
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* sudo /usr/bin/lstopo
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== System changelog ==
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Currently, the default system is outdated:
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* Debian squeeze
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* Cuda 4
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* ...
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System is to be updated. Help welcome.
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== Acknolegment ==
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The idgraf machine was funded by the Mescal and Moais teams of LIG/Inria.

Current revision as of 09:22, 29 August 2016

| Introduction | Usage | Idfreeze | Idgraf | Idphix | Idbool | Idkat | Idcin | Idarm | Ppol | Grimage |

Contents

Overview

Idgraf is a Bi-Socket Intel Xeon Westmere machine featuring 8 Nvidia GPU

  • 2x Intel Xeon X5650 (Westmere, 6 cores each, total 12 cores)
  • 72 GB RAM
  • 8x coprocesseur Nvidia Tesla C2050

See:

Beware that to support 8 GPU on a bi-socket Nehalem based machine, in addition to the need of 2 IOH connected via QPI buses, 2 PCI-e switches are required (PLXTech PEX8647 here), possibly limiting the bandwidth to the PCI-e cards.

See:

How to experiment

Privileged commands

Currently, the following commands can be run via sudo in exclusive jobs:

  • sudo /usr/bin/whoami (provided for testing the mechanism, should return "root")
  • sudo /sbin/reboot
  • sudo /usr/bin/schedtool
  • sudo /usr/bin/opcontrol
  • sudo /usr/bin/perf
  • sudo /opt/likwid/bin/likwid-perfctr
  • sudo /opt/likwid/bin/likwid-topology
  • sudo /usr/bin/nvidia-smi (please notify other users via the digitalis mailing list if you change parameters on GPUs that will not be reset to default after a reboot, e.g. the memory ECC configuration)
  • sudo /usr/local/bin/ipmi-reset
  • sudo /usr/bin/lstopo

System changelog

Currently, the default system is outdated:

  • Debian squeeze
  • Cuda 4
  • ...

System is to be updated. Help welcome.

Acknolegment

The idgraf machine was funded by the Mescal and Moais teams of LIG/Inria.

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