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Sharing CUDA Memory

Sharing between process

Sharing between processes is implemented using the Legacy CUDA IPC API (functions whose names begin with cuIpc), and is supported only on Linux.

Export device array to another process

A device array can be shared with another process in the same machine using the CUDA IPC API. To do so, use the .get_ipc_handle() method on the device array to get a IpcArrayHandle object, which can be transferred to another process.

numba.cuda.cudadrv.devicearray.DeviceNDArray.get_ipc_handle

numba.cuda.cudadrv.devicearray.IpcArrayHandle

Import IPC memory from another process

The following function is used to open IPC handle from another process as a device array.

numba.cuda.open_ipc_array