Andrew V. Adinetz 24c2e41287 Fixed the bug with illegal memory access in test_large_sizes.py with 4 GPUs. (#3068)
- thrust::copy() called from dvec::copy() for gpairs invoked a GPU kernel instead of
  cudaMemcpy()
- this resulted in illegal memory access if the GPU running the kernel could not access
  the data being copied
- new version of dvec::copy() for thrust::device_ptr iterators calls cudaMemcpy(),
  avoiding the problem.
2018-02-01 16:54:46 +13:00
..
2018-01-23 13:14:15 +13:00
2018-01-23 13:14:15 +13:00