From 0ad6cb01b9176e99c3e4bb5643ac6a5dd477aad6 Mon Sep 17 00:00:00 2001
From: Willem Jan Palenstijn <Willem.Jan.Palenstijn@cwi.nl>
Date: Thu, 9 Nov 2017 20:57:31 +0100
Subject: Check for CUDA support at run-time in use_cuda()

---
 cuda/2d/astra.cu | 11 +++++++++++
 cuda/2d/astra.h  |  2 ++
 cuda/3d/mem3d.cu | 19 ++++++-------------
 cuda/3d/mem3d.h  |  1 -
 4 files changed, 19 insertions(+), 14 deletions(-)

(limited to 'cuda')

diff --git a/cuda/2d/astra.cu b/cuda/2d/astra.cu
index 81459de..69a4e86 100644
--- a/cuda/2d/astra.cu
+++ b/cuda/2d/astra.cu
@@ -529,5 +529,16 @@ _AstraExport bool setGPUIndex(int iGPUIndex)
         return true;
 }
 
+_AstraExport size_t availableGPUMemory()
+{
+    size_t free, total;
+    cudaError_t err = cudaMemGetInfo(&free, &total);
+    if (err != cudaSuccess)
+        return 0;
+    return free;
+}
+
+
+
 
 }
diff --git a/cuda/2d/astra.h b/cuda/2d/astra.h
index 9355cb4..119d172 100644
--- a/cuda/2d/astra.h
+++ b/cuda/2d/astra.h
@@ -121,5 +121,7 @@ _AstraExport std::string getCudaDeviceString(int device);
 
 _AstraExport bool setGPUIndex(int index);
 
+_AstraExport size_t availableGPUMemory();
+
 }
 #endif
diff --git a/cuda/3d/mem3d.cu b/cuda/3d/mem3d.cu
index 2369149..e55cc13 100644
--- a/cuda/3d/mem3d.cu
+++ b/cuda/3d/mem3d.cu
@@ -32,6 +32,8 @@ along with the ASTRA Toolbox. If not, see <http://www.gnu.org/licenses/>.
 
 #include "mem3d.h"
 
+#include "../2d/astra.h"
+
 #include "astra3d.h"
 #include "cone_fp.h"
 #include "cone_bp.h"
@@ -53,15 +55,6 @@ struct SMemHandle3D_internal
 	unsigned int nz;
 };
 
-size_t availableGPUMemory()
-{
-	size_t free, total;
-	cudaError_t err = cudaMemGetInfo(&free, &total);
-	if (err != cudaSuccess)
-		return 0;
-	return free;
-}
-
 int maxBlockDimension()
 {
 	int dev;
@@ -88,7 +81,7 @@ MemHandle3D allocateGPUMemory(unsigned int x, unsigned int y, unsigned int z, Me
 	hnd.ny = y;
 	hnd.nz = z;
 
-	size_t free = availableGPUMemory();
+	size_t free = astraCUDA::availableGPUMemory();
 
 	cudaError_t err;
 	err = cudaMalloc3D(&hnd.ptr, make_cudaExtent(sizeof(float)*x, y, z));
@@ -97,7 +90,7 @@ MemHandle3D allocateGPUMemory(unsigned int x, unsigned int y, unsigned int z, Me
 		return MemHandle3D();
 	}
 
-	size_t free2 = availableGPUMemory();
+	size_t free2 = astraCUDA::availableGPUMemory();
 
 	ASTRA_DEBUG("Allocated %d x %d x %d on GPU. (Pre: %lu, post: %lu)", x, y, z, free, free2);
 
@@ -127,9 +120,9 @@ bool zeroGPUMemory(MemHandle3D handle, unsigned int x, unsigned int y, unsigned
 
 bool freeGPUMemory(MemHandle3D handle)
 {
-	size_t free = availableGPUMemory();
+	size_t free = astraCUDA::availableGPUMemory();
 	cudaError_t err = cudaFree(handle.d->ptr.ptr);
-	size_t free2 = availableGPUMemory();
+	size_t free2 = astraCUDA::availableGPUMemory();
 
 	ASTRA_DEBUG("Freeing memory. (Pre: %lu, post: %lu)", free, free2);
 
diff --git a/cuda/3d/mem3d.h b/cuda/3d/mem3d.h
index 619354b..12a532d 100644
--- a/cuda/3d/mem3d.h
+++ b/cuda/3d/mem3d.h
@@ -77,7 +77,6 @@ enum Mem3DZeroMode {
 	INIT_ZERO
 };
 
-size_t availableGPUMemory();
 int maxBlockDimension();
 
 _AstraExport MemHandle3D wrapHandle(float *D_ptr, unsigned int x, unsigned int y, unsigned int z, unsigned int pitch);
-- 
cgit v1.2.3