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why it apperars an CL_EXEC_STATUS_ERROR_FOR_EVENTS_IN_WAIT_LIST error when read buffer from gpu back to host memory?

phenix

Hi,

I create an read_write buffer on device. After computing the CL kernel  I'm ready to read is back to the host, but it appears an CL_EXEC_STATUS_ERROR_FOR_EVENTS_IN_WAIT_LIST error. The documents online says:

if the read and write operations are blocking and the execution status of any of the events in event_wait_list is a negative integer value.

But the event_wait_list I pass into is null and the number of event is zero. This help nothing. It runs no error in any other gpu but mali (mali-T760). What the reason cause this?

Best wishes,

phenix

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