Processing-in-memory (PIM) systems

A processing-in-memory (PIM) system comprising:

• a first PIM device and a second PIM devices, wherein each of the first and second PIM devices includes a plurality of multiplying-and-accumulating (MAC) operators capable of performing a MAC arithmetic operation and a plurality of memory banks capable of supplying weight data to the plurality of MAC operators, and wherein the MAC arithmetic operation is performed using the weight data and vector data as input data;
• a host capable of controlling the first and second PIM devices and including a data buffer;
• and
• a memory device configured to communicate with the host,
• wherein the first and second PIM devices include a first global buffer and a second global buffer, which are capable of supplying the vector data to the plurality of MAC operators, respectively, and
• wherein the host is configured to read the vector data out of the memory device to store the vector data into the data buffer and is configured to write the vector data stored in the data buffer into the first and second global buffers.