System authorizing direct data transfers between memories of several components of that system

摘要

The invention relates in particular to a computer system including peripheral devices (600) and at least one switch (605) connected to each device. A first device includes a means for initiating a control of direct access to memory areas, each one of which is associated with a separate element of the system. The switch includes a means for transmitting at least a portion of the control to each element. At least one element comprises a second device including a means for receiving at least one control of direct access to a memory area of said second device, said control being received from said first device via said switch, and a means for transmitting said received control to a component of said second device. Said system allows said first device to perform a direct data transfer to or from a memory of said first peripheral device from or to each element.

主权项

1. A computer system, comprising:
a plurality of peripheral devices; and at least one switch connected to each of the peripheral devices, wherein the switch is configured to transfer a command to a plurality of elements, the plurality of elements comprising at least the peripheral devices, wherein a first of the peripheral devices is configured to initiate at least one command for direct access to a plurality of memory areas, each of the memory areas being associated with a distinct element of the plurality of elements, wherein the switch is configured to send at least a part of the at least one command to one or more of the elements, wherein at least one of the elements consists of a second of the peripheral devices, wherein the second peripheral device comprises: a local memory, and a controller configured to receive the at least one command, wherein the command is for direct access to the local memory, wherein the command is received from the first peripheral device via the switch, and wherein the controller is also configured to send the received command to a component of the second peripheral device, wherein the controller is configured to check the validity of the command and compare an area of a memory of the second peripheral device with at least one predetermined memory area, wherein the computer system enables the first peripheral device to perform a direct transfer of at least one item of data to or from a memory of the at least first peripheral device from or to each of the elements, except from or to the first device, on the basis of a single command.