Function: mem_flush

Product	Supported (√/x)
Ascend 950PR/Ascend 950DT	√
Atlas A3 training products/Atlas A3 inference products	√
Atlas A2 training products/Atlas A2 inference products	√
Atlas training products	√
Atlas inference products	√
Atlas 200I/500 A2 inference products	√

Flushes cache data to the DDR and invalidates the cache.

In this version, you do not need to care about the cache coherence between the CPU and NPU and therefore this API is unused in this version.

C Prototype

aclError aclrtMemFlush(void *devPtr, size_t size)

Parameter	Description
dev_ptr	Int, start address of the DDR memory to be flushed.
size	Int, size of the DDR memory to be flushed, in bytes. The size cannot be 0.

Return Value	Description
ret	Int, error code. 0 on success; else, failure.

Parent topic: Device Memory Allocation and Deallocation