Dear all,
When I use mpirun -np 1 to run a simulation in amber14 pmemd.cuda.parallel output file shows:
|------------------- GPU DEVICE INFO --------------------
|
| Task ID: 0
| CUDA_VISIBLE_DEVICES: 0
| CUDA Capable Devices Detected: 1
| CUDA Device ID in use: 0
| CUDA Device Name: Tesla K40c
| CUDA Device Global Mem Size: 11519 MB
| CUDA Device Num Multiprocessors: 15
| CUDA Device Core Freq: 0.75 GHz
|
|--------------------------------------------------------
|---------------- GPU PEER TO PEER INFO -----------------
|
| Peer to Peer support: ENABLED
|
|--------------------------------------------------------
But when I use mpirun -np 2 to run simulation output file shows:
|------------------- GPU DEVICE INFO --------------------
|
| Task ID: 0
| CUDA_VISIBLE_DEVICES: 0,1
| CUDA Capable Devices Detected: 2
| CUDA Device ID in use: 0
| CUDA Device Name: Tesla K40c
| CUDA Device Global Mem Size: 11519 MB
| CUDA Device Num Multiprocessors: 15
| CUDA Device Core Freq: 0.75 GHz
|
|
| Task ID: 1
| CUDA_VISIBLE_DEVICES: 0,1
| CUDA Capable Devices Detected: 2
| CUDA Device ID in use: 1
| CUDA Device Name: Tesla K40c
| CUDA Device Global Mem Size: 11519 MB
| CUDA Device Num Multiprocessors: 15
| CUDA Device Core Freq: 0.75 GHz
|
|--------------------------------------------------------
|---------------- GPU PEER TO PEER INFO -----------------
|
| Peer to Peer support: DISABLED
|
| (Selected GPUs cannot communicate over P2P)
Is this installation problem ??Please help me out.
Thanks Saikat
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Received on Mon Aug 21 2017 - 03:30:03 PDT
