[font=“arial, verdana, tahoma, sans-serif”]While trying to debug some other code, I ran into a limitation of cuPrintf library. Consider the following example:[/font]
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#include <cuPrintf.cu>
#include <conio.h>
__global__ void test()
{
unsigned idx = blockDim.x * blockIdx.x + threadIdx.x;
if (idx%100==0) //this condition makes no difference
cuPrintf("ThreadIndex: %d\n", idx);
}
int main( int argc, char ** argv )
{
cudaPrintfInit();
test<<< 8, 256 >>>(); //test<<< 9, 256 >>>(); produces no output
cudaPrintfDisplay(stdout, true);
cudaPrintfEnd();
printf("Error state: %d\n", cudaGetLastError());
getch();
return 0;
}
[font=“arial, verdana, tahoma, sans-serif”] [/font][font=“arial, verdana, tahoma, sans-serif”] [/font][font=“arial, verdana, tahoma, sans-serif”]It would seem that cuPrintf style debugging is limited only to small grids. Now I have to either find a small input file, or generate it :D[/font]
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[font=“arial, verdana, tahoma, sans-serif”]Does anyone know whether this is hardware dependent? I got GTX280 and I am using cuPrintf from SDK 3.2.[/font]
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[font=“arial, verdana, tahoma, sans-serif”]Dženan[/font]