I have a simple reduction kernel, just summing up values in a stream. For certain values of the stream length, the result is expected, for others the program crashes. The first few non-working stream lengths are

11, 13, 17, 19, 22, 23, 26, 29, 31, 33...

Cheers

Nik

Nik,

There are constraints on the stream size for a reduction kernel --

the prime factorization of the stream size can have only 2, 3, 5 and 7 as factors. Sizes that are multiples of primes (11 or greater) will not work in reduction.We are improving our documentation -- this will be properly noted in there.

udeepta