Method and apparatus for emulating an input/output unit when transferring data over a network
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United States of America Patent
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Jul 16, 2002
Grant Date -
N/A
app pub date -
Oct 29, 1999
filing date -
Oct 29, 1999
priority date (Note) -
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status (Latency Note)
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Abstract
In an example embodiment, a method of transferring data to or from an input/output unit across a network emulates a message passing protocol. A message sent from a host device to the input/output unit specifies the requested data transfer and is formatted in accordance with the message passing protocol. An emulation service software layer on the input/output unit translates the message into a corresponding series of data transfer operation instructions. The series of data transfer operation instructions have a different format than the format of the message passing protocol. The data transfer specified by the message is carried out by the operating system and hardware of a target device in the input/output unit using the series of data transfer operation instructions. After the data transfer is completed, a reply message is created in the emulation service software layer and the reply message is sent to the host device in a format according to the message passing protocol.
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