diff options
Diffstat (limited to 'nerv/lib/matrix/cukernel.cu')
| -rw-r--r-- | nerv/lib/matrix/cukernel.cu | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/nerv/lib/matrix/cukernel.cu b/nerv/lib/matrix/cukernel.cu index a19030a..6fb78f0 100644 --- a/nerv/lib/matrix/cukernel.cu +++ b/nerv/lib/matrix/cukernel.cu @@ -1,5 +1,21 @@ #define NERV_GENERIC_CUKERNEL +#include "cumatrix.h" + +__device__ double atomicAdd(double* address, double val) { + //atmoicAdd is not included in CUDA for double + unsigned long long int* address_as_ull = + (unsigned long long int*)address; + unsigned long long int old = *address_as_ull, assumed; + do { + assumed = old; + old = atomicCAS(address_as_ull, assumed, + __double_as_longlong(val + + __longlong_as_double(assumed))); + } while (assumed != old); + return __longlong_as_double(old); +} + #define cudak_(NAME) cudak_float_ ## NAME #define MATRIX_USE_FLOAT #include "generic/elem_type.h" |