Diagnosing error messages cudaError_enum

[shifter1]

First-chance exception at 0x77d4dd10 in program.exe: Microsoft C++ exception: cudaError_enum at memory location 0x0295fc78.

MSVC 2005 gives this error if I try to start more than 256 threads per block. I looked in the docs and read that 1.1 devices can handle up to 512 threads per block. Is there a way to find out what is going on behind the scenes? I am not using pointers and is very conservative with memory.

I get this with cutilCheckMsg:

cutilCheckMsg() CUTIL CUDA error: Kernel execution failed in file <file.cu>, line 230 : too many resources requested for launch.

What resources are limited?

[jph4599]

Double check your grid and block parameters for launching the kernel?