Merge pull request #77 from psychocrypt/topic-appveyorCudaSupport

appveyor CUDA support

1 files changed, 64 insertions, 0 deletions

diff --git a/xmrstak/backend/cpu/hwlocMemory.cpp b/xmrstak/backend/cpu/hwlocMemory.cpp
new file mode 100644
index 0000000..94d2b53
--- /dev/null
+++ b/xmrstak/backend/cpu/hwlocMemory.cpp
@@ -0,0 +1,64 @@
+#include "xmrstak/backend/cpu/hwlocMemory.hpp"
+
+#ifndef CONF_NO_HWLOC
+
+#include "xmrstak/misc/console.hpp"
+
+#include <hwloc.h>
+
+/** pin memory to NUMA node
+ *
+ * Set the default memory policy for the current thread to bind memory to the
+ * NUMA node.
+ *
+ * @param puId core id
+ */
+void bindMemoryToNUMANode( size_t puId )
+{
+	int depth;
+	hwloc_topology_t topology;
+
+	hwloc_topology_init(&topology);
+	hwloc_topology_load(topology);
+
+	if(!hwloc_topology_get_support(topology)->membind->set_thisthread_membind)
+	{
+		printer::inst()->print_msg(L0, "hwloc: set_thisthread_membind not supported");
+		hwloc_topology_destroy(topology);
+		return;
+	}
+
+	depth = hwloc_get_type_depth(topology, HWLOC_OBJ_PU);
+
+	for( size_t i = 0;
+		i < hwloc_get_nbobjs_by_depth(topology, depth);
+		i++ )
+	{
+		hwloc_obj_t pu = hwloc_get_obj_by_depth(topology, depth, i);
+		if(  pu->os_index == puId )
+		{
+			if( 0 > hwloc_set_membind_nodeset(
+				topology,
+				pu->nodeset,
+				HWLOC_MEMBIND_BIND,
+				HWLOC_MEMBIND_THREAD))
+			{
+				printer::inst()->print_msg(L0, "hwloc: can't bind memory");
+			}
+			else
+			{
+				printer::inst()->print_msg(L0, "hwloc: memory pinned");
+				break;
+			}
+		}
+	}
+
+	hwloc_topology_destroy(topology);
+}
+#else
+
+void bindMemoryToNUMANode( size_t )
+{
+}
+
+#endif