From 687c5e244e46e51786afad77f5015cae9abad129 Mon Sep 17 00:00:00 2001
From: Willem Jan Palenstijn <Willem.Jan.Palenstijn@cwi.nl>
Date: Wed, 6 Jan 2016 15:10:34 +0100
Subject: Add multi-GPU support to CompositeGeometryManager
---
matlab/mex/astra_mex_c.cpp | 45 ++++++++++++++++++++++++++++++++++++++++-----
1 file changed, 40 insertions(+), 5 deletions(-)
(limited to 'matlab')
diff --git a/matlab/mex/astra_mex_c.cpp b/matlab/mex/astra_mex_c.cpp
index d34334c..fdf4f33 100644
--- a/matlab/mex/astra_mex_c.cpp
+++ b/matlab/mex/astra_mex_c.cpp
@@ -38,6 +38,7 @@ $Id$
#include "astra/Globals.h"
#ifdef ASTRA_CUDA
#include "../cuda/2d/darthelper.h"
+#include "astra/CompositeGeometryManager.h"
#endif
using namespace std;
using namespace astra;
@@ -83,12 +84,46 @@ void astra_mex_use_cuda(int nlhs, mxArray* plhs[], int nrhs, const mxArray* prhs
* Set active GPU
*/
void astra_mex_set_gpu_index(int nlhs, mxArray* plhs[], int nrhs, const mxArray* prhs[])
-{
+{
#ifdef ASTRA_CUDA
- if (nrhs >= 2) {
- bool ret = astraCUDA::setGPUIndex((int)mxGetScalar(prhs[1]));
- if (!ret)
- mexPrintf("Failed to set GPU %d\n", (int)mxGetScalar(prhs[1]));
+ bool usage = false;
+ if (nrhs != 2 && nrhs != 4) {
+ usage = true;
+ }
+
+ astra::SGPUParams params;
+ params.memory = 0;
+
+ if (!usage && nrhs >= 4) {
+ std::string s = mexToString(prhs[2]);
+ if (s != "memory") {
+ usage = true;
+ } else {
+ params.memory = (size_t)mxGetScalar(prhs[3]);
+ }
+ }
+
+ if (!usage && nrhs >= 2) {
+ int n = mxGetN(prhs[1]) * mxGetM(prhs[1]);
+ params.GPUIndices.resize(n);
+ double* pdMatlabData = mxGetPr(prhs[1]);
+ for (int i = 0; i < n; ++i)
+ params.GPUIndices[i] = (int)pdMatlabData[i];
+
+
+ astra::CCompositeGeometryManager::setGlobalGPUParams(params);
+
+
+ // Set first GPU
+ if (n >= 1) {
+ bool ret = astraCUDA::setGPUIndex((int)pdMatlabData[0]);
+ if (!ret)
+ mexPrintf("Failed to set GPU %d\n", (int)pdMatlabData[0]);
+ }
+ }
+
+ if (usage) {
+ mexPrintf("Usage: astra_mex('set_gpu_index', index/indices [, 'memory', memory])");
}
#endif
}
--
cgit v1.2.3