Shared memory system and use method of shared memory system
A technology of shared storage and instructions, applied in the computer field, can solve the problems of long seek time of mechanical hard disk, excess storage resources, high cost, etc., and achieve the effect of improving the utilization rate of storage resources, realizing reasonable allocation, and realizing reasonable heterogeneity.
Active Publication Date: 2014-11-05
DAWNING INFORMATION IND BEIJING +1
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Problems solved by technology
[0004] When there are many CPUs in the server, the design method of one CPU to one hard disk is adopted. One CPU has one hard disk, and more hard disks are needed. However, a high-performance server with hundreds of hard disks will make the server bulky and the storage resources excess is unreasonable
However, the design method of using a memory stick instead of a hard disk to connect to the CPU is not only costly, but also resources cannot be allocated flexibly and rationally.
[0005] In addition, ordinary mechanical hard disks are used to build a multi-CPU shared storage system. Due to the long seek time and low speed of mechanical hard disks, it cannot meet the data reading rate requirements of many CPUs.
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[0027] In order to make the technical solutions and advantages of the present invention clearer, the exemplary embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all implementations. Exhaustive list of examples.
[0028] The inventor noticed during the invention that:
[0029] Currently, there is no multi-CPU shared storage technology in the market, and most high-performance computing fields still adopt the design method of one CPU for one hard disk, so as to balance the gap between the high bandwidth of the CPU and the low access rate of the hard disk. Corresponding technologies such as: RAID controller, PCIe switch expansion hard disk interface. If a server has hundreds of CPUs, according to the existing technology, a CPU with a hard disk needs hundreds of hard disks, and a high-performance server with...
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The invention provides a shared memory system and a use method of the shared memory system. The use method comprises the following steps that: a first SATA (Serial Advanced Technology Attachment) protocol resolving module receives SATA instructions sent by a CPU (Central Processing Unit) to carry out resolving; a link arbitration module sends the SATA instructions to an address mapping module one by one; when the address mapping module determines that a memory address space indicated in the SATA instructions is NandFlash, the SATA instructions are sent to a PCIe (Peripheral Component Interface Express) hardcore; and after the address mapping module determines that the memory address space indicated in the SATA instructions is a hard disk, the SATA instructions are sent to a second SATA protocol resolving module. The PCIe hardcore encapsulates the SATA instructions sent by the address mapping module, and sends the encapsulated SATA instructions to an NandFlash controller; and the second SATA protocol resolving module encapsulates the SATA instructions sent by the address mapping module, and sends the encapsulated SATA instructions to the hard disk. The shared memory system and the use method have the advantage that the reasonable isomerism of a memory stack and the reasonable allocation of memory resources are realized.
Description
technical field [0001] The invention relates to the technical field of computers, in particular to a shared storage system and a method for using the same. Background technique [0002] There is no technology for multiple CPUs to share storage in the prior art. Most high-performance computing fields still adopt the design method of one CPU to one hard disk, or use a memory module instead of a hard disk to connect to the CPU. [0003] The deficiencies of prior art are: [0004] When there are many CPUs in the server, the design method of one CPU to one hard disk is adopted. One CPU has one hard disk, and more hard disks are needed. However, a high-performance server with hundreds of hard disks will make the server bulky and the storage resources Excess is unreasonable. However, the design method of using a memory stick instead of a hard disk to connect to the CPU is not only costly, but also resources cannot be allocated flexibly and rationally. [0005] In addition, ordi...
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IPC IPC(8): G06F12/02
Inventor 周雪杨晓君倪亚路
Owner DAWNING INFORMATION IND BEIJING