Diary/2020-4-11の変更点

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!RTX2080Tiの評価
e-treesのGPUサーバのGPUをGTX1080からRTX2080Tiにアップデート．
折角なのでGTX1080とRTX2080Tiの性能を https://github.com/ekondis/mixbench で比較してみた．
結果は，
{{ref_image gpu-comparison.png}}

RTX2080Tiはだいぶ速そうだぞ，ってことで仕事させないと．

""

それぞれのスペックは，こんな感じ．

 ------------------------ Device specifications ------------------------
 Device:              GeForce GTX 1080
 CUDA driver version: 10.20
 GPU clock rate:      1911 MHz
 Memory clock rate:   2752 MHz
 Memory bus width:    256 bits
 WarpSize:            32
 L2 cache size:       2048 KB
 Total global mem:    8117 MB
 ECC enabled:         No
 Compute Capability:  6.1
 Total SPs:           2560 (20 MPs x 128 SPs/MP)
 Compute throughput:  9784.32 GFlops (theoretical single precision FMAs)
 Memory bandwidth:    352.32 GB/sec
 -----------------------------------------------------------------------
 Total GPU memory 8511881216, free 8374583296
 Buffer size:          64MB
 Trade-off type:       compute with global memory (block strided)
 
 ------------------------ Device specifications ------------------------
 Device:              GeForce RTX 2080 Ti
 CUDA driver version: 10.20
 GPU clock rate:      1650 MHz
 Memory clock rate:   3500 MHz
 Memory bus width:    352 bits
 WarpSize:            32
 L2 cache size:       5632 KB
 Total global mem:    11019 MB
 ECC enabled:         No
 Compute Capability:  7.5
 Total SPs:           4352 (68 MPs x 64 SPs/MP)
 Compute throughput:  14361.60 GFlops (theoretical single precision FMAs)
 Memory bandwidth:    616.00 GB/sec
 -----------------------------------------------------------------------
 Total GPU memory 11554717696, free 11379408896
 Buffer size:          64MB
 Trade-off type:       compute with global memory (block strided)


生データとプロットスクリプト
{{ref gpu-comparison.dat}}
{{ref gpu-comparison.plt}}