aclrtMemcpy
Applicability
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Product |
Supported |
|---|---|
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Atlas 350 Accelerator Card |
√ |
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√ |
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√ |
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√ |
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√ |
Description
Copies memory.
Prototype
1
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aclError aclrtMemcpy(void *dst, size_t destMax, const void *src, size_t count, aclrtMemcpyKind kind) |
Parameters
|
Parameter |
Input/Output |
Description |
|---|---|---|
|
dst |
Input |
Pointer to the destination memory address. |
|
destMax |
Input |
Memory size in bytes in the destination address. |
|
src |
Input |
Pointer to the source memory address. |
|
count |
Input |
Size in bytes to copy. |
|
kind |
Input |
Memory copy kind, reserved. If the configured enum value is invalid, the system determines whether to copy data from the source address to the destination address based on the source and destination memory address pointers. If no, the system returns an error message. For details about the type definition, see aclrtMemcpyKind. |
Returns
0 on success; else, failure. For details, see aclError.
Restrictions
- This API copies the memory immediately. No implicit device synchronization or stream synchronization is performed within the function.
- To perform memory copy between two devices, call aclrtDeviceCanAccessPeer to query whether inter-device data exchange is supported, call aclrtDeviceEnablePeerAccess to enable inter-device data exchange, and then call this API to perform memory copy.
This restriction applies to the following models:
Atlas 350 Accelerator Card
Atlas A2 training product /Atlas A2 inference product Atlas inference product Atlas training product