'ExecutionEnvironment',"multi-gpu"

Коллеги, добрый день.

Почему может не работать тренеровка сети на 2-х GPU.

gpuDevice(1)
ans = 
  CUDADevice with properties:

                      Name: 'Quadro P2000'
                     Index: 1
         ComputeCapability: '6.1'
            SupportsDouble: 1
             DriverVersion: 10.2000
            ToolkitVersion: 10.1000
        MaxThreadsPerBlock: 1024
          MaxShmemPerBlock: 49152
        MaxThreadBlockSize: [1024 1024 64]
               MaxGridSize: [2.1475e+09 65535 65535]
                 SIMDWidth: 32
               TotalMemory: 5.3687e+09
           AvailableMemory: 4.3120e+09
       MultiprocessorCount: 8
              ClockRateKHz: 1480500
               ComputeMode: 'Default'
      GPUOverlapsTransfers: 1
    KernelExecutionTimeout: 1
          CanMapHostMemory: 1
           DeviceSupported: 1
            DeviceSelected: 1

gpuDevice(2)
ans = 
  CUDADevice with properties:

                      Name: 'Quadro P2000'
                     Index: 2
         ComputeCapability: '6.1'
            SupportsDouble: 1
             DriverVersion: 10.2000
            ToolkitVersion: 10.1000
        MaxThreadsPerBlock: 1024
          MaxShmemPerBlock: 49152
        MaxThreadBlockSize: [1024 1024 64]
               MaxGridSize: [2.1475e+09 65535 65535]
                 SIMDWidth: 32
               TotalMemory: 5.3687e+09
           AvailableMemory: 4.3363e+09
       MultiprocessorCount: 8
              ClockRateKHz: 1480500
               ComputeMode: 'Default'
      GPUOverlapsTransfers: 1
    KernelExecutionTimeout: 1
          CanMapHostMemory: 1
           DeviceSupported: 1
            DeviceSelected: 1