Introduce disable_malloc_async Cuda option with generated makefiles

Makefile.kokkos

@@ -30,7 +30,7 @@ KOKKOS_TRIBITS ?= "no"
 KOKKOS_STANDALONE_CMAKE ?= "no"
 
 # Default settings specific options.
-# Options: force_uvm,use_ldg,rdc,enable_lambda,enable_constexpr
+# Options: force_uvm,use_ldg,rdc,enable_lambda,enable_constexpr,disable_malloc_async
 KOKKOS_CUDA_OPTIONS ?= ""
 
 # Options: rdc
@@ -82,6 +82,7 @@ KOKKOS_INTERNAL_CUDA_USE_UVM := $(call kokkos_has_string,$(KOKKOS_CUDA_OPTIONS),
 KOKKOS_INTERNAL_CUDA_USE_RELOC := $(call kokkos_has_string,$(KOKKOS_CUDA_OPTIONS),rdc)
 KOKKOS_INTERNAL_CUDA_USE_LAMBDA := $(call kokkos_has_string,$(KOKKOS_CUDA_OPTIONS),enable_lambda)
 KOKKOS_INTERNAL_CUDA_USE_CONSTEXPR := $(call kokkos_has_string,$(KOKKOS_CUDA_OPTIONS),enable_constexpr)
+KOKKOS_INTERNAL_CUDA_DISABLE_MALLOC_ASYNC := $(call kokkos_has_string,$(KOKKOS_CUDA_OPTIONS),disable_malloc_async)
 KOKKOS_INTERNAL_HPX_ENABLE_ASYNC_DISPATCH := $(call kokkos_has_string,$(KOKKOS_HPX_OPTIONS),enable_async_dispatch)
 # deprecated
 KOKKOS_INTERNAL_ENABLE_DESUL_ATOMICS := $(call kokkos_has_string,$(KOKKOS_OPTIONS),enable_desul_atomics)
@@ -689,6 +690,12 @@ ifeq ($(KOKKOS_INTERNAL_USE_CUDA), 1)
   ifeq ($(KOKKOS_INTERNAL_COMPILER_CLANG), 1)
     tmp := $(call kokkos_append_header,"$H""define KOKKOS_IMPL_CUDA_CLANG_WORKAROUND")
   endif
+
+  ifeq ($(KOKKOS_INTERNAL_CUDA_DISABLE_MALLOC_ASYNC), 0)
+    tmp := $(call kokkos_append_header,"$H""define KOKKOS_ENABLE_IMPL_CUDA_MALLOC_ASYNC")
+  else
+    tmp := $(call kokkos_append_header,"/* $H""undef KOKKOS_ENABLE_IMPL_CUDA_MALLOC_ASYNC */")
+  endif
 endif
 
 ifeq ($(KOKKOS_INTERNAL_USE_HPX), 1)