초록 ▼

A data processing system for transferring data is provided. This system includes central processing units (CPUs 20, 22, 24 and 26) and storage units (30 and 32 with 100-105 and 110-115) which are interconnected by a network (10). The CPUs (20, 22, 24 and 26) include a request process (133) and a sto

A data processing system for transferring data is provided. This system includes central processing units (CPUs 20, 22, 24 and 26) and storage units (30 and 32 with 100-105 and 110-115) which are interconnected by a network (10). The CPUs (20, 22, 24 and 26) include a request process (133) and a storage process (130). The storage process (130) controls access to the storage unit (30 with 100-105 and 110-115). Software routines (220) are used to provide direct access to the storage unit (30 with 100-105 and 110-115) by the request CPU (22). The request CPU (20) is the CPU containing the request process (133). A virtual memory address for a buffer (160) of the request CPU (22) is created in the request CPU (22). The virtual memory address along with a storage unit access request are sent to the CPU (20) containing the storage process (130). A work request including the virtual memory address to sent from the storage process (130) to the storage unit (30 with 100-105 and 110-115). The data is then transferred directly between the request CPU (22) and the storage unit (30 with 100-105 and 110-115). The storage unit (30 with 100-105 and 110-115) then responds to the work request.

대표청구항 ▼

[ What is claimed is:] [1.] In a data processing system for transferring data in which a plurality of central processing units (CPUs) and at least one storage unit are interconnected by a network, said CPUs including a request CPU having a request process, access to said storage unit being controlle

[ What is claimed is:] [1.] In a data processing system for transferring data in which a plurality of central processing units (CPUs) and at least one storage unit are interconnected by a network, said CPUs including a request CPU having a request process, access to said storage unit being controlled by one of said CPUs, a method of direct transfer of data between said storage unit and said request CPU, comprising the steps of:a) the request process creating a virtual memory address indicative of a memory buffer of said request CPU;b) the request process sending to said one of said CPUs said virtual memory address and a storage unit access request;c) the one of said CPUs sending to said storage unit: a work request including said virtual memory address;d) responding to said work request; ande) interfacing directly with said request CPU for the transfer of data between the storage unit and said memory buffer. [2.] The method of direct transfer of data between said storage unit and said request CPU of claim 1, wherein said direct transfer of data allows said request CPU to read data from said storage unit into said by buffer at said virtual memory address.