chibi@1804:~$ cat /etc/os-release NAME="Ubuntu" VERSION="18.04.1 LTS (Bionic Beaver)" ID=ubuntu ID_LIKE=debian PRETTY_NAME="Ubuntu 18.04.1 LTS" VERSION_ID="18.04" HOME_URL="https://www.ubuntu.com/" SUPPORT_URL="https://help.ubuntu.com/" BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/" PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy" VERSION_CODENAME=bionic UBUNTU_CODENAME=bionic chibi@1804:~$ nvcc -V nvcc: NVIDIA (R) Cuda compiler driver Copyright (c) 2005-2018 NVIDIA Corporation Built on Sat_Aug_25_21:08:01_CDT_2018 Cuda compilation tools, release 10.0, V10.0.130 chibi@1804:~$ sudo hddtemp /dev/sda [sudo] chibi のパスワード: /dev/sda: TS128GSSD370S: 19°C chibi@1804:~/NVIDIA_CUDA-10.0_Samples/5_Simulations/nbody$ ./nbody -benchmark -fp64 -numbodies=2 56000 -numdevices=2 Run "nbody -benchmark [-numbodies=]" to measure performance. -fullscreen (run n-body simulation in fullscreen mode) -fp64 (use double precision floating point values for simulation) -hostmem (stores simulation data in host memory) -benchmark (run benchmark to measure performance) -numbodies= (number of bodies (>= 1) to run in simulation) -device= (where d=0,1,2.... for the CUDA device to use) -numdevices= (where i=(number of CUDA devices > 0) to use for simulation) -compare (compares simulation results running once on the default GPU and once on the CPU) -cpu (run n-body simulation on the CPU) -tipsy= (load a tipsy model file for simulation) NOTE: The CUDA Samples are not meant for performance measurements. Results may vary when GPU Boost is enabled. number of CUDA devices = 2 > Windowed mode > Simulation data stored in system memory > Double precision floating point simulation > 2 Devices used for simulation GPU Device 0: "TITAN V" with compute capability 7.0 > Compute 7.0 CUDA device: [TITAN V] > Compute 7.0 CUDA device: [TITAN V] number of bodies = 256000 256000 bodies, total time for 10 iterations: 2789.158 ms = 234.967 billion interactions per second = 7049.009 double-precision GFLOP/s at 30 flops per interaction chibi@1804:~/NVIDIA_CUDA-10.0_Samples/5_Simulations/nbody$ ./nbody -benchmark -numbodies=256000 -numdevices=2 Run "nbody -benchmark [-numbodies=]" to measure performance. -fullscreen (run n-body simulation in fullscreen mode) -fp64 (use double precision floating point values for simulation) -hostmem (stores simulation data in host memory) -benchmark (run benchmark to measure performance) -numbodies= (number of bodies (>= 1) to run in simulation) -device= (where d=0,1,2.... for the CUDA device to use) -numdevices= (where i=(number of CUDA devices > 0) to use for simulation) -compare (compares simulation results running once on the default GPU and once on the CPU) -cpu (run n-body simulation on the CPU) -tipsy= (load a tipsy model file for simulation) NOTE: The CUDA Samples are not meant for performance measurements. Results may vary when GPU Boost is enabled. number of CUDA devices = 2 > Windowed mode > Simulation data stored in system memory > Single precision floating point simulation > 2 Devices used for simulation GPU Device 0: "TITAN V" with compute capability 7.0 > Compute 7.0 CUDA device: [TITAN V] > Compute 7.0 CUDA device: [TITAN V] number of bodies = 256000 256000 bodies, total time for 10 iterations: 765.143 ms = 856.520 billion interactions per second = 17130.392 single-precision GFLOP/s at 20 flops per interaction chibi@1804:~/NVIDIA_CUDA-10.0_Samples/5_Simulations/nbody$ cd chibi@1804:~$ cat /etc/os-release NAME="Ubuntu" VERSION="18.04.1 LTS (Bionic Beaver)" ID=ubuntu ID_LIKE=debian PRETTY_NAME="Ubuntu 18.04.1 LTS" VERSION_ID="18.04" HOME_URL="https://www.ubuntu.com/" SUPPORT_URL="https://help.ubuntu.com/" BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/" PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy" VERSION_CODENAME=bionic UBUNTU_CODENAME=bionic chibi@1804:~$ nvcc -V nvcc: NVIDIA (R) Cuda compiler driver Copyright (c) 2005-2018 NVIDIA Corporation Built on Sat_Aug_25_21:08:01_CDT_2018 Cuda compilation tools, release 10.0, V10.0.130 chibi@1804:~$ sudo hddtemp /dev/sda [sudo] chibi のパスワード: /dev/sda: TS128GSSD370S: 19°C chibi@1804:~$