|
|
@@ -688,10 +688,15 @@ Two modes of execution exist to accomodate with existing usages.
|
|
|
In the Fork mode, StarPU will call the codelet function on one
|
|
|
of the CPUs of the combined worker. The codelet function can use
|
|
|
@code{starpu_combined_worker_get_size()} to get the number of threads it is
|
|
|
-allowed to start to achieve the computation. The CPU binding mask is already
|
|
|
-enforced, so that threads created by the function will inherit the mask, and
|
|
|
-thus execute where StarPU expected. For instance, using OpenMP (full source is
|
|
|
-available in @code{examples/openmp/vector_scal.c}):
|
|
|
+allowed to start to achieve the computation. The CPU binding mask for the whole
|
|
|
+set of CPUs is already enforced, so that threads created by the function will
|
|
|
+inherit the mask, and thus execute where StarPU expected, the OS being in charge
|
|
|
+of choosing how to schedule threads on the corresponding CPUs. The application
|
|
|
+can also choose to bind threads by hand, using e.g. sched_getaffinity to know
|
|
|
+the CPU binding mask that StarPU chose.
|
|
|
+
|
|
|
+For instance, using OpenMP (full source is available in
|
|
|
+@code{examples/openmp/vector_scal.c}):
|
|
|
|
|
|
@example
|
|
|
void scal_cpu_func(void *buffers[], void *_args)
|
