Commit 1754ef27 authored by Martin Bauer's avatar Martin Bauer
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CUDA indexing: clip to maximum cuda block size

- previous method did not work with kernels generated for walberla where
  block size changes are made at runtime
- device query does not always work, since the compile system may have
  no GPU or not the same GPU
-> max block size is passed as parameter and only optionally determined
   by a device query
parent a278f336
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