From c33c60b917942d02b444d25041612d2504057583 Mon Sep 17 00:00:00 2001
From: Witold Bolt <witold.bolt@gmail.com>
Date: Wed, 14 Nov 2012 22:24:23 +0000
Subject: [PATCH] fix for OSX CPU mode
---
com.amd.aparapi.jni/src/cpp/aparapi.cpp | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/com.amd.aparapi.jni/src/cpp/aparapi.cpp b/com.amd.aparapi.jni/src/cpp/aparapi.cpp
index 97378246..c56cb589 100644
--- a/com.amd.aparapi.jni/src/cpp/aparapi.cpp
+++ b/com.amd.aparapi.jni/src/cpp/aparapi.cpp
@@ -1067,6 +1067,20 @@ JNI_JAVA(jint, KernelRunner, runKernelJNI)
return status;
}
+ // -----------
+ // fix for Mac OSX CPU driver (and possibly others) which fail to give correct maximum work group info
+ // while using clGetDeviceInfo
+ // see: http://www.openwall.com/lists/john-dev/2012/04/10/4
+ cl_uint max_group_size[3];
+ status = clGetKernelWorkGroupInfo(jniContext->kernel, (cl_device_id)jniContext->deviceId, CL_KERNEL_WORK_GROUP_SIZE, sizeof(max_group_size), &max_group_size, NULL);
+
+ if (status != CL_SUCCESS) {
+ PRINT_CL_ERR(status, "clGetKernelWorkGroupInfo()");
+ } else {
+ range.localDims[0] = range.localDims[0] > max_group_size[0] ? max_group_size[0] : range.localDims[0];
+ }
+ // ------ end fix
+
// two options here due to passid
if (passid == 0){
//fprintf(stderr, "setting passid to %d of %d first and last\n", passid, passes);
--
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