> Am 18.12.2014 um 19:55 schrieb Karl Czajkowski <[email protected]>: > > On Dec 18, Gregor Thalhammer modulated: > >> del src_tmp >> after writing to the mapped buffer? This should unmap the buffer. >> > > Ah, that seems to fix it! Is this expected behavior, that writes to a > mapping may be buffered until it is unmapped? > Yes, the specs require that a buffer gets unmapped before accessed by a kernel, otherwise the behaviour is undefined. It is left up to the OpenCL implementation whether it provides direct or buffered access for mapped memory.
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