[chibi@centos7 nbody]$ cat \/etc\/redhat-release
\nCentOS Linux release 7.7.1908 (Core)
\n[chibi@centos7 nbody]$ nvcc -V
\nnvcc: NVIDIA (R) Cuda compiler driver
\nCopyright (c) 2005-2019 NVIDIA Corporation
\nBuilt on Sun_Jul_28_19:07:16_PDT_2019
\nCuda compilation tools, release 10.1, V10.1.243
\n[chibi@centos7 nbody]$ sudo hddtemp \/dev\/sda
\n[sudo] chibi password:
\n\/dev\/sda: ST2000LX001-1RG174: 18\u00b0C
\n[chibi@centos7 nbody]$ .\/nbody –benchmark –numbodies=256000 -numdevices=2
\nRun “nbody -benchmark [-numbodies=<numBodies>]” to measure performance.
\n-fullscreen (run n-body simulation in fullscreen mode)
\n-fp64 (use double precision floating point values for simulation)
\n-hostmem (stores simulation data in host memory)
\n-benchmark (run benchmark to measure performance)
\n-numbodies=<N> (number of bodies (>= 1) to run in simulation)
\n-device=<d> (where d=0,1,2…. for the CUDA device to use)
\n-numdevices=<i> (where i=(number of CUDA devices > 0) to use for simulation)
\n-compare (compares simulation results running once on the default GPU and once on the CPU)
\n-cpu (run n-body simulation on the CPU)
\n-tipsy=<file.bin> (load a tipsy model file for simulation)<\/p>\n
NOTE: The CUDA Samples are not meant for performance measurements. Results may vary when GPU Boost is enabled.<\/p>\n
number of CUDA devices = 2
\n> Windowed mode
\n> Simulation data stored in system memory
\n> Single precision floating point simulation
\n> 2 Devices used for simulation
\nGPU Device 0: “TITAN V” with compute capability 7.0<\/p>\n
> Compute 7.0 CUDA device: [TITAN V] NOTE: The CUDA Samples are not meant for performance measurements. Results may vary when GPU Boost is enabled.<\/p>\n number of CUDA devices = 2 Compute 7.0 CUDA device: [TITAN V] \u30c7\u30fc\u30bf\u8a73\u7d30\u3000CentOS Linux release 7.7.1908 TITAN V x2 CUDA 10.1 Samples nbody \u5358\u7cbe\u5ea6 \u500d\u7cbe\u5ea6 17596.655 6569.545 GFLOP s<\/a><\/p>\n GPU\u6e29\u5ea6\u63a8\u79fb CentOS Linux release 7.7.1908 TITAN V x2 CUDA 10.1 Samples nbody \u5358\u7cbe\u5ea6 \u500d\u7cbe\u5ea6 17596.655 6569.545 GFLOP s nvidia-smi<\/a><\/p>\n","protected":false},"excerpt":{"rendered":" [chibi@centos7 nbody]$ cat \/etc\/redhat-release CentOS Linux release 7.7.1908 (Core) [chibi@centos7 nbody]$ nvc … \u7d9a\u304d\u3092\u8aad\u3080
\n> Compute 7.0 CUDA device: [TITAN V]
\nnumber of bodies = 256000
\n256000 bodies, total time for 10 iterations: 744.869 ms
\n= 879.833 billion interactions per second
\n= 17596.655 single-precision GFLOP\/s at 20 flops per interaction<\/strong>
\n[chibi@centos7 nbody]$ .\/nbody –benchmark -fp64 –numbodies=256000 -numdevices=
\n2
\nRun “nbody -benchmark [-numbodies=<numBodies>]” to measure performance.
\n-fullscreen (run n-body simulation in fullscreen mode)
\n-fp64 (use double precision floating point values for simulation)
\n-hostmem (stores simulation data in host memory)
\n-benchmark (run benchmark to measure performance)
\n-numbodies=<N> (number of bodies (>= 1) to run in simulation)
\n-device=<d> (where d=0,1,2…. for the CUDA device to use)
\n-numdevices=<i> (where i=(number of CUDA devices > 0) to use for simulation)
\n-compare (compares simulation results running once on the default GPU and once on the CPU)
\n-cpu (run n-body simulation on the CPU)
\n-tipsy=<file.bin> (load a tipsy model file for simulation)<\/p>\n
\n> Windowed mode
\n> Simulation data stored in system memory
\n> Double precision floating point simulation
\n> 2 Devices used for simulation
\nGPU Device 0: “TITAN V” with compute capability 7.0<\/p>\n
\n> Compute 7.0 CUDA device: [TITAN V]
\nnumber of bodies = 256000
\n256000 bodies, total time for 10 iterations: 2992.719 ms
\n= 218.985 billion interactions per second
\n= 6569.545 double-precision GFLOP\/s at 30 flops per interaction<\/strong><\/p><\/blockquote>\n