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@@ -618,7 +618,7 @@ static void measure_bandwidth_between_host_and_dev(int dev, double *dev_timing_h
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static void benchmark_all_gpu_devices(void)
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{
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#ifdef STARPU_SIMGRID
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- _STARPU_DISP("can not measure bus in simgrid mode\n");
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+ _STARPU_DISP("can not measure bus in simgrid mode, please run starpu_calibrate_bus in non-simgrid mode to make sure the bus performance model was calibrated\n");
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STARPU_ABORT();
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#else /* !SIMGRID */
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#if defined(STARPU_USE_CUDA) || defined(STARPU_USE_OPENCL)
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