[GitHub] [incubator-mxnet] TristonC edited a comment on issue #17855: TensorRT does not work on other GPUs except GPU0

2020-03-25 Thread GitBox 
TristonC edited a comment on issue #17855: TensorRT does not work on other GPUs 
except GPU0
URL: 
https://github.com/apache/incubator-mxnet/issues/17855#issuecomment-604091749
 
 
   @Caenorst  Looks like the TRTCreateState function in 
[src/operator/subgraph/tensorrt/tensorrt.cc](https://github.com/apache/incubator-mxnet/blob/56e79853ad5cf98baf84454eb595c7658bef6ee6/src/operator/subgraph/tensorrt/tensorrt.cc#L263)
 file not passing the ctx to the TRT. 
   Add 
   ```c++
   CUDA_CALL(cudaSetDevice(ctx.dev_id));
   ```
   to the top of this function will fix this issue, but not sure it is a good 
fix. 


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[GitHub] [incubator-mxnet] TristonC edited a comment on issue #17855: TensorRT does not work on other GPUs except GPU0

2020-03-25 Thread GitBox 
TristonC edited a comment on issue #17855: TensorRT does not work on other GPUs 
except GPU0
URL: 
https://github.com/apache/incubator-mxnet/issues/17855#issuecomment-604039572
 
 
   It seems the onnx-trt not setting the device properly. @SayHiRay If you 
accept a dirty workaround try replace ctx = mx.gpu(1) with these: 
   ```python
   from ctypes import cdll, c_char_p
   libcudart = cdll.LoadLibrary('libcudart.so')
   libcudart.cudaGetErrorString.restype = c_char_p
   def cudaSetDevice(device_idx):
   ret = libcudart.cudaSetDevice(device_idx)
   if ret != 0:
   error_string = libcudart.cudaGetErrorString(ret)
   raise RuntimeError("cudaSetDevice: " + error_string)
   
   device_id = 1
   cudaSetDevice(device_id)
   ctx = mx.gpu(device_id)
   ```



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[GitHub] [incubator-mxnet] TristonC edited a comment on issue #17855: TensorRT does not work on other GPUs except GPU0

2020-03-25 Thread GitBox 
TristonC edited a comment on issue #17855: TensorRT does not work on other GPUs 
except GPU0
URL: 
https://github.com/apache/incubator-mxnet/issues/17855#issuecomment-604039572
 
 
   It seems the onnx-trt not setting the device properly. If you accept a dirty 
workaround try replace ctx = mx.gpu(1) with these: 
   ```python
   from ctypes import cdll, c_char_p
   libcudart = cdll.LoadLibrary('libcudart.so')
   libcudart.cudaGetErrorString.restype = c_char_p
   def cudaSetDevice(device_idx):
   ret = libcudart.cudaSetDevice(device_idx)
   if ret != 0:
   error_string = libcudart.cudaGetErrorString(ret)
   raise RuntimeError("cudaSetDevice: " + error_string)
   
   device_id = 1
   cudaSetDevice(device_id)
   ctx = mx.gpu(device_id)
   ```



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[GitHub] [incubator-mxnet] TristonC edited a comment on issue #17855: TensorRT does not work on other GPUs except GPU0

2020-03-25 Thread GitBox 
TristonC edited a comment on issue #17855: TensorRT does not work on other GPUs 
except GPU0
URL: 
https://github.com/apache/incubator-mxnet/issues/17855#issuecomment-604039572
 
 
   It seems the TRT setting the device properly. If you accept a dirty 
workaround try replace ctx = mx.gpu(1) with these: 
   ```python
   from ctypes import cdll, c_char_p
   libcudart = cdll.LoadLibrary('libcudart.so')
   libcudart.cudaGetErrorString.restype = c_char_p
   def cudaSetDevice(device_idx):
   ret = libcudart.cudaSetDevice(device_idx)
   if ret != 0:
   error_string = libcudart.cudaGetErrorString(ret)
   raise RuntimeError("cudaSetDevice: " + error_string)
   
   device_id = 1
   cudaSetDevice(device_id)
   ctx = mx.gpu(device_id)
   ```



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