CUFFT 1D batch size limit

Accelerated Computing CUDA CUDA Programming and Performance
1

Hello,

I am doing some test on GTX480 which has 1.5GB global memory.
CUFFT gives me incorrect output whenever the sum of input and output reaches 1GB.

Data type: double2
Out-of-place transfer
FFT_size*Batch_size=32M
Using streaming or not doesn’t matter.

Is that a bug?
Thanks.

Liang
test_1dcufft.cu (2.26 KB)

2

Hello,

I am doing some test on GTX480 which has 1.5GB global memory.
CUFFT gives me incorrect output whenever the sum of input and output reaches 1GB.

Data type: double2
Out-of-place transfer
FFT_size*Batch_size=32M
Using streaming or not doesn’t matter.

Is that a bug?
Thanks.

Liang