From 2b75e497aa36076797fc4ac73025a901011b7cac Mon Sep 17 00:00:00 2001
From: Gary Frost <frost.gary@gmail.com>
Date: Tue, 15 Nov 2011 18:44:20 +0000
Subject: [PATCH] Hack/Workaround for issue #18. Certainly not a fix. Forces
only one device in multi-device config to be used. Bizarely this is also more
performant.
---
com.amd.aparapi.jni/src/cpp/aparapi.cpp | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/com.amd.aparapi.jni/src/cpp/aparapi.cpp b/com.amd.aparapi.jni/src/cpp/aparapi.cpp
index d5863292..29fa4c27 100644
--- a/com.amd.aparapi.jni/src/cpp/aparapi.cpp
+++ b/com.amd.aparapi.jni/src/cpp/aparapi.cpp
@@ -447,6 +447,15 @@ class JNIContext{
status = clGetDeviceIDs(platforms[i], deviceType, 0, NULL, &deviceIdc);
// now check if this platform supports the requested device type (GPU or CPU)
if (status == CL_SUCCESS && deviceIdc >0 ){
+ if (deviceIdc >1){
+ if (isVerbose()){
+ fprintf(stderr, "Warning attempt to use %d devices\n", deviceIdc);
+ }
+ deviceIdc = 1; // Hack to work around issue #18 (multiple device error)
+ if (isVerbose()){
+ fprintf(stderr, "Locking deviceIdc to %d to work around issue #18\n", deviceIdc);
+ }
+ }
platform = platforms[i];
if (isVerbose()){
fprintf(stderr, "platform %s supports requested device type\n", platformVendorName);
--
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