Follow up
Hi, after some more investigations, this is a small code that illustrates the issue: aftercompleting a few loops (around 150-200) the GPU doesn't return control to the CPU and the system crashes after a few minutes.
You'll notice that the kernel is really basic, as well as the exercice loop.
I suspect some issue with memory management in CAL/driver...
Am I the only one seeing this happening? I can't believe!
Thanks for support.
Jean-Claude
// Test_GPU_1.cpp
// Generates blue-screen/atikmdag error on Vista 32
// by: jean-claude
#include "stdafx.h"
#include "brook/Stream.h"
#include "brook/kernels.h"
brook::Stream<int3> *stream_A;
brook::Stream<int3> *stream_B;
int *i_buffer;
int *o_buffer;
void create_streams_and_buffers( void ) {
int h = 720;
int w = 576;
unsigned int dims[2] = { h, w };
stream_A = new brook::Stream<int3>(2,dims);
stream_B = new brook::Stream<int3>(2,dims);
i_buffer = (int *) malloc(h*w*3*sizeof(int));
o_buffer = (int *) malloc(h*w*3*sizeof(int));
}
void free_streams_and_buffers( void ) {
free(i_buffer);
free(o_buffer);
free(stream_A);
free(stream_B);
}
// Test prog
int _tmain(int argc, _TCHAR* argv[]) {
create_streams_and_buffers();
// here we go : test loop
// ----------------------------
int number_of_loops = 1000; // crashes or not depending on this value!!!
for (int i=0; i<number_of_loops; i++) {
stream_A->read(i_buffer);
kern_copy(*stream_A, *stream_B);
stream_B->write(o_buffer);
}
free_streams_and_buffers();
return 0;
}
kernel void kern_copy( int3 A<> , out int3 B<> ) {
B = A;
}
