Antonio Sanchez de218b471d Add -arch=<arch> argument for nvcc. ...

Without this flag, when compiling with nvcc, if the compute architecture of a card does
not exactly match any of those listed for `-gencode arch=compute_<arch>,code=sm_<arch>`,
then the kernel will fail to run with:
```
cudaErrorNoKernelImageForDevice: no kernel image is available for execution on the device.
```
This can happen, for example, when compiling with an older cuda version
that does not support a newer architecture (e.g. T4 is `sm_75`, but cuda
9.2 only supports up to `sm_70`).

With the `-arch=<arch>` flag, the code will compile and run at the
supplied architecture.

2021-09-24 20:48:01 -07:00

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