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Re: [Starpu-devel] StarPU cannot find GPUs on Plafrim


Chronologique Discussions 
  • From: Lionel Eyraud-Dubois <lionel.eyraud-dubois@inria.fr>
  • To: Samuel Thibault <samuel.thibault@inria.fr>, starpu-devel@lists.gforge.inria.fr
  • Cc: Yihong Gao <yihong.gao@inria.fr>
  • Subject: Re: [Starpu-devel] StarPU cannot find GPUs on Plafrim
  • Date: Thu, 28 Sep 2017 12:06:55 +0200
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On 28/09/2017 11:20, Samuel Thibault wrote:
Yihong Gao, on jeu. 28 sept. 2017 11:16:54 +0200, wrote:
I'm running an experiment on Chameleon+StarPU. I use the Mirage server on
Plafrim, but the StarPU cannot find the GPUs of the server. The results are as
follows:

[ygao@mirage06 ~]$ $(spack location -i chameleon~simu)/lib/chameleon/timing/
time_dgeqrf_tile --gpus=3 --trace --nb=960 --ib=96 --n_range=15360:15360:1
--niter=10
[starpu][starpu_initialize] Warning: StarPU was configured with --with-fxt,
which slows down a bit, limits scalability and makes worker initialization
sequential
[starpu][_starpu_init_machine_config] Warning: 3 CUDA devices requested. Only 0
available.
Please see in the documentation, in the FAQ section "StarPU does not
see my CUDA device", the test to run to make sure whether it's a StarPU
issue or a CUDA issue (in which latter case it's the plafrim people you
should contact)

Samuel
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Thanks for this ! Indeed it was a CUDA problem, mismatch in versions of CUDA (sirocco has v90, mirage has v75). By the way, the code included in the FAQ is not complete : the #include statements at the top are not there, maybe including them would help newbies be more autonomous ;)

Thanks again,

Lionel.





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