Modularize runtime's GPU implementation #20358
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Signed-off-by: Engin Kayraklioglu <e-kayrakli@users.noreply.github.com>
Signed-off-by: Engin Kayraklioglu <e-kayrakli@users.noreply.github.com>
Signed-off-by: Engin Kayraklioglu <e-kayrakli@users.noreply.github.com>
Signed-off-by: Engin Kayraklioglu <e-kayrakli@users.noreply.github.com>
…e wanted Signed-off-by: Engin Kayraklioglu <e-kayrakli@users.noreply.github.com>
Signed-off-by: Engin Kayraklioglu <e-kayrakli@users.noreply.github.com>
Signed-off-by: Engin Kayraklioglu <e-kayrakli@users.noreply.github.com>
Signed-off-by: Engin Kayraklioglu <e-kayrakli@users.noreply.github.com>
Signed-off-by: Engin Kayraklioglu <e-kayrakli@users.noreply.github.com>
Signed-off-by: Engin Kayraklioglu <e-kayrakli@users.noreply.github.com>
Signed-off-by: Engin Kayraklioglu <e-kayrakli@users.noreply.github.com>
Signed-off-by: Engin Kayraklioglu <e-kayrakli@users.noreply.github.com>
Signed-off-by: Engin Kayraklioglu <e-kayrakli@users.noreply.github.com>
Signed-off-by: Engin Kayraklioglu <e-kayrakli@users.noreply.github.com>
Signed-off-by: Engin Kayraklioglu <e-kayrakli@users.noreply.github.com>
Signed-off-by: Engin Kayraklioglu <e-kayrakli@users.noreply.github.com>
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This PR refactors the GPU layer in the runtime so that it is not hard-coded to
use CUDA.
The main GPU interface of the runtime is still in runtime/includes/chpl-gpu.h
which is implemented in runtime/src/chpl-gpu.c. However, with this PR, the
functions there will call new functions that are in
chpl_gpu_impl_*"namespace". These functions implement core functionality and implemented by
different layers. Chapel-specific functions like debugging output and
diagnostics are still maintained in chpl-gpu.c, and not going to be duplicated
in different layers as much as possible.
Currently, there is only one GPU layer and it is for CUDA. This can be specified
with
CHPL_GPU_RUNTIMEenvironment variable. But, obviously CUDA is the defaultand there's no actual difference whether you set this environment variable or
not. The hope is that new GPU layers can be added relatively easily once we lay
out this support.
Test: