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[Starpu-devel] Running Cholesky_implicit on 2 gpu nodes


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  • From: Yizhou Qian <adncat@stanford.edu>
  • To: "starpu-devel@lists.gforge.inria.fr" <starpu-devel@lists.gforge.inria.fr>
  • Subject: [Starpu-devel] Running Cholesky_implicit on 2 gpu nodes
  • Date: Thu, 17 Oct 2019 02:48:00 +0000
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Hi,

My name is Yizhou Qian and I am a graduate student at Stanford. Currently I am trying to do some runtime comparisons of Starpu and other systems. I ran the code cholesky_implicit in Starpu's package on school's cluster with 2 gpu nodes and 10 cores.

[adncat@sh-ln07 login ~]$ srun -p mc --cpus-per-task=1 --tasks 10 --gres=gpu:2 --pty bash


But I received the following error.

[adncat@sh-115-07 ~/starpu-1.3.2]$ STARPU_SCHED=dmdas ./examples/cholesky/cholesky_implicit -size $((960*40)) -nblocks 40

[starpu][compare_value_and_recalibrate] Current configuration does not match the bus performance model (CUDA: (stored) 1 != (current) 2), recalibrating...

[starpu][benchmark_all_gpu_devices] CUDA 0...

[starpu][benchmark_all_gpu_devices] CUDA 1...

[starpu][benchmark_all_gpu_devices] CUDA 0 -> 1...

[starpu][measure_bandwidth_between_dev_and_dev_cuda] GPU-Direct 1 -> 0

[starpu][measure_bandwidth_between_dev_and_dev_cuda] GPU-Direct 0 -> 1

[starpu][benchmark_all_gpu_devices] CUDA 1 -> 0...

[starpu][measure_bandwidth_between_dev_and_dev_cuda] GPU-Direct 0 -> 1

[starpu][measure_bandwidth_between_dev_and_dev_cuda] GPU-Direct 1 -> 0

[starpu][benchmark_all_gpu_devices] OpenCL 0...

[starpu][starpu_opencl_display_error] oops in _starpu_opencl_init_context (drivers/opencl/driver_opencl.c:171) ((null)) ... <Invalid device> (-33) 

lt-cholesky_implicit: ../include/starpu_opencl.h:253: starpu_opencl_report_error: Assertion `0' failed.

Aborted

Could you help me with this? I am not sure how I can resolve this issue.

Best,

Yizhou

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