Question

What does this error mean? I can’t seem to find ANY information on it. It occurs on a cudaEventRecord.

in the project header file:

cudaEvent_t cudaEventStart;

in a .c file:

cudaEventCreate(&cudaEventStart);
printf("create event: %d\n", (int) cudaEventStart);

in my one .cu file:

printf("record event: %d\n", (int) cudaEventStart);
cudaEventRecord(cudaEventStart);

the relevant output shows what the problem with the call is. cudaEventStart isn’t a valid event resource in my cu file for some reason:

create event: 44199920
record event: 0

Details

• CUDA 3.2
• GTX 480
• 64-bit Win7

I’m in the process of porting my code from linux to windows. It runs fine on the same card in linux, and there have been only a few changes. I defined roundf and added the following:

typedef size_t off_t;
#define strtof(str,n) (float)strtod(str,n)
#include <float.h>
#define isnan(n) _isnan(n)
#define strcasecmp _stricmp
#include <io.h>
#define read _read

It isn’t clear to me why any of these things should affect cuda resources. Perhaps I’m building the project incorrectly somehow…?

Answer 1

An invalid resource handle usually means trying to use something (pointer, symbol, texture, kernel) in a context where it was not created. A more specific answer will require a more specific question, particularly which API you are using and how/if you are using host threads anywhere in the code.