--- a/src/share/vm/graal/graalCompilerToGPU.cpp	Sat Sep 28 21:06:12 2013 -0400
+++ b/src/share/vm/graal/graalCompilerToGPU.cpp	Sun Sep 29 14:47:12 2013 -0400
@@ -103,6 +103,45 @@
 
 C2V_END
 
+C2V_VMENTRY(jobject, executeParallelMethodVarargs, (JNIEnv *env,
+                                                          jobject,
+                                                          jint dimX, jint dimY, jint dimZ,
+                                                          jobject args, jobject hotspotInstalledCode))
+  ResourceMark rm;
+  HandleMark hm;
+
+  if (gpu::is_available() == false || gpu::has_gpu_linkage() == false && gpu::is_initialized()) {
+    tty->print_cr("executeExternalMethodVarargs - not available / no linkage / not initialized");
+    return NULL;
+  }
+  jlong nmethodValue = HotSpotInstalledCode::codeBlob(hotspotInstalledCode);
+  nmethod* nm = (nmethod*) (address) nmethodValue;
+  methodHandle mh = nm->method();
+  Symbol* signature = mh->signature();
+
+  // start value is the kernel
+  jlong startValue = HotSpotInstalledCode::codeStart(hotspotInstalledCode);
+
+  PTXKernelArguments ptxka(signature, (arrayOop) JNIHandles::resolve(args), mh->is_static());
+  JavaValue result(ptxka.get_ret_type());
+if (!gpu::execute_warp(dimX, dimY, dimZ, (address)startValue, ptxka, result)) {
+    return NULL;
+  }
+
+  if (ptxka.get_ret_type() == T_VOID) {
+    return NULL;
+  } else if (ptxka.get_ret_type() == T_OBJECT || ptxka.get_ret_type() == T_ARRAY) {
+    return JNIHandles::make_local((oop) result.get_jobject());
+  } else {
+    oop o = java_lang_boxing_object::create(ptxka.get_ret_type(), (jvalue *) result.get_value_addr(), CHECK_NULL);
+    if (TraceGPUInteraction) {
+      tty->print_cr("GPU execution returned %d", result.get_jint());
+    }
+    return JNIHandles::make_local(o);
+  }
+
+C2V_END
+
 C2V_VMENTRY(jboolean, deviceInit, (JNIEnv *env, jobject))
   if (gpu::is_available() == false || gpu::has_gpu_linkage() == false) {
     tty->print_cr("deviceInit - not available / no linkage");
@@ -157,10 +196,11 @@
 #define GPUSPACE_METHOD       "J"
 
 JNINativeMethod CompilerToGPU_methods[] = {
-  {CC"generateKernel",                CC"([B" STRING ")"GPUSPACE_METHOD,        FN_PTR(generateKernel)},
-  {CC"deviceInit",                    CC"()Z",                                  FN_PTR(deviceInit)},
-  {CC"deviceDetach",                  CC"()Z",                                  FN_PTR(deviceDetach)},
-  {CC"executeExternalMethodVarargs",  CC"(["OBJECT HS_INSTALLED_CODE")"OBJECT,  FN_PTR(executeExternalMethodVarargs)},
+  {CC"generateKernel",                CC"([B" STRING ")"GPUSPACE_METHOD,          FN_PTR(generateKernel)},
+  {CC"deviceInit",                    CC"()Z",                                    FN_PTR(deviceInit)},
+  {CC"deviceDetach",                  CC"()Z",                                    FN_PTR(deviceDetach)},
+  {CC"executeExternalMethodVarargs",  CC"(["OBJECT HS_INSTALLED_CODE")"OBJECT,    FN_PTR(executeExternalMethodVarargs)},
+  {CC"executeParallelMethodVarargs",  CC"(III["OBJECT HS_INSTALLED_CODE")"OBJECT, FN_PTR(executeParallelMethodVarargs)},
 };
 
 int CompilerToGPU_methods_count() {