GPUs available & how to use it

  • Article written by Siegfried Höfinger (VSC Team)
    (last update 2020-10-04 by sh).

TOP500 List June 2020

RankNation Machine PerformanceAccelerators
1. Fugaku 416 PFLOPs/s
2. Summit 149 PFLOPs/sNVIDIA V100
3. Sierra 95 PFLOPs/sNVIDIA V100
4. Sunway TaihuLight 93 PFLOPs/s
5. Tianhe-2A 62 PFLOPs/s
6. HPC5 36 PFLOPs/sNVIDIA V100
7. Selene 28 PFLOPs/sNVIDIA A100
8. Frontera 24 PFLOPs/sNVIDIA RTX5000/V100
9. Marconi-100 22 PFLOPs/sNVIDIA V100
10. Piz Daint 21 PFLOPs/sNVIDIA P100

Components on VSC

Model #cores Clock Freq (GHz)Memory (GB)Bandwidth (GB/s)TDP (Watt)FP32/FP64 (GFLOPs/s)
42+51x GeForce GTX-1080 n37[1,2,3]-[001-006,001-022,001-026]
nvidia-gtx-1080.jpg 2560 1.61 8 320 180 8228/257
4x Tesla k20m n372-02[4,5]
2496 0.71 5 208 195 3520/1175
1x Tesla V100 n372-023
5120/6441.31 32 900 250 14000/7000
Model #cores Clock Freq (GHz)Memory (GB)Bandwidth (GB/s)TDP (Watt)FP32/FP64 (GFLOPs/s)
19x GeForce RTX-2080Ti n375-[001-019]
43521.35 11 616 250 13450/420
45×2 nVidia A40 n306[6,7,8]-[001-019,001-019,001-007]
10752 1.305 48 696 300 37400/1169
60×2 nVidia A100-40GB n57[1-4]-[001-015]
6912 0.765 40 1555 250 19500/9700

Working on GPU nodes Interactively

Interactive mode

1. VSC-5 >  salloc -N 1 -p zen2_0256_a40x2 --qos  zen2_0256_a40x2

2. VSC-5 >  squeue -u $USER

3. VSC-5 >  srun -n 1 hostname  (...while still on the login node !)

4. VSC-5 >  ssh n3066-012  (...or whatever else node had been assigned)

5. VSC-5 >  module load cuda/9.1.85    
            cd ~/examples/09_special_hardware/gpu_gtx1080/matrixMul
            nvcc ./matrixMul.cu  
            ./a.out 

            cd ~/examples/09_special_hardware/gpu_gtx1080/matrixMulCUBLAS
            nvcc matrixMulCUBLAS.cu -lcublas
            ./a.out

6. VSC-5 >  nvidia-smi

7. VSC-5 >  /opt/sw/x86_64/glibc-2.17/ivybridge-ep/cuda/9.1.85/NVIDIA_CUDA-9.1_Samples/1_Utilities/deviceQuery/deviceQuery

Working on GPU using SLURM

SLURM submission gpu_test.scrpt

#!/bin/bash
#
#  usage: sbatch ./gpu_test.scrpt          
#
#SBATCH -J A40     
#SBATCH -N 1
#SBATCH --partition zen2_0256_a40x2
#SBATCH --qos zen2_0256_a40x2
 
module purge
module load cuda/9.1.85
 
nvidia-smi
/opt/sw/x86_64/glibc-2.17/ivybridge-ep/cuda/9.1.85/NVIDIA_CUDA-9.1_Samples/1_Utilities/deviceQuery/deviceQuery      

Exercise/Example/Problem:
Using interactive mode or batch submission, figure out whether we have ECC enabled on GPUs of type gtx1080 ?

Real-World Example, AMBER-16

PerformancePower Efficiency
  • pandoc/introduction-to-vsc/09_special_hardware/accelerators.txt
  • Last modified: 2022/11/04 10:34
  • by goldenberg