WO2017185763A1 - Method for setting numa domains in computer system of complex topological structure - Google Patents

Abstract

Disclosed is a method for setting NUMA domains in a computer system of a complex topological structure. The method comprises: setting a weight for each link in system topology; calculating a distance between actual physical nodes by means of accumulation; and calculating a distance between logical nodes by means of a node corresponding table. In this way, a distance between NUMA domains is accurately set. By means of the method of the present invention, a distance between various NUMA domains can be calculated more accurately, and the purpose of optimizing a system performance can be achieved.

Description

 NUMA domain setting method in a computer system with complex topology

 [0001] The present invention relates to the field of computer system technologies, and in particular, to a NUMA domain setting method in a computer system with a complex topology.

 Background technique

 [0002] In a computer system, it is often necessary to set a NUMA domain (Non-Uniform Memory Access)

 Architecture), and reasonable distance between NUMA domains to improve the performance of the entire system. However, for multi-node computer systems, especially those with complex topological structures between nodes, the distance between NUMA domains is often not set accurately enough, which limits system performance.

 technical problem

 [0003] The technical problem to be solved by the present invention is: The present invention proposes a NUMA domain setting method in a computer system with complex topology structure, which can accurately calculate the distance between each NUMA domain and achieve the purpose of system performance optimization. .

 Problem solution

 Technical solution

[0004] The technical solution adopted by the present invention is:

 [0005] A NUMA domain setting method in a computer system of a complex topology, wherein the method sets weights for each link in the system topology, and calculates the distance between actual physical nodes by accumulating, and then passes The node correspondence table calculates the distance between the logical nodes, thereby accurately setting the distance between the NUMA domains.

 [0006] The method steps are as follows:

 [0007] First, a transmission weight is set for each transmission link of a computer system, and a larger delay link has a larger value; [0008] Second, a topology simulation matrix is established for the system;

 [0009] Then, each time the partition is set, a correspondence table between the logical node and the physical node is established, which is convenient for querying the distance between the logical nodes;

[0010] Finally, after setting the NUMA domain, the corresponding table and topology of the logical node and the physical node can be queried. Simulate the matrix and get the exact distance of the logical nodes to get an accurate NUMA domain setting.

[0011] The topology analog matrix is constructed as follows:

 [0012] Assuming that there are K nodes in the system, xij represents the closest distance between the i-th node and the j-th node, and the distance is obtained by accumulating the transmission weights, where i and j are both physical node numbers.

 Advantageous effects of the invention

 Beneficial effect

[0013] The beneficial effects of the present invention are:

 [0014] The method of the invention can accurately calculate the distance between each NUMA domain and achieve the purpose of optimizing the system performance.

 Brief description of the drawing

 DRAWINGS

 1 is a schematic diagram of a topology simulation matrix of the present invention;

2 is a correspondence table of a logical node and a physical node;

3 is a schematic diagram of an 8-node topology analog matrix;

[0018] FIG. 4 is a block logical correspondence table of nodes 1, 6, 3, and 4;

[0019] FIG. 5 is a schematic diagram of setting a transmission weight for each transmission link.

Embodiments of the invention

[0020] The present invention will be further described below in accordance with specific embodiments with reference to the accompanying drawings:

[0021] Example 1 :

 [0022] A NUMA domain setting method in a computer system with a complex topology, the method calculates a distance between actual physical nodes by adding weights to each link in the system topology, and then The node correspondence table calculates the distance between the logical nodes, thereby accurately setting the distance between the NUMA domains.

 [0023] Example 2

 [0024] Based on the embodiment 1, the operation steps of the method in this embodiment are as follows:

[0025] First, a transmission weight is set for each transmission link of the computer system, and the larger the delay, the larger the value; [0026] Second, establish a topology analog matrix for the system;

 [0027] Then, each time the partition is set, a correspondence table between the logical node and the physical node is established, which is convenient for querying the distance between the logical nodes, as shown in FIG. 2;

[0028] Finally, after setting the NUMA domain, the exact distance of the logical node can be obtained by querying the correspondence table of the logical node and the physical node and the topology simulation matrix, thereby obtaining an accurate NUMA domain setting.

Embodiment 3

 [0030] As shown in FIG. 1, on the basis of Embodiment 1 or 2, the topology analog matrix structure in this embodiment is configured as follows:

 [0031] Assuming that there are K nodes in the system, xij represents the closest distance between the i-th node and the j-th node, and the distance is obtained by accumulating the transmission weights, where i and j are both physical node numbers.

Embodiment 4

 [0033] An 8-node computer system is described:

 [0034] First, a transmission weight is set for each transmission link of the computer system, as shown in FIG. 5;

[0035] Then, establish a topology simulation matrix for the system, as shown in FIG. 3;

 [0036] Then, each time the partition is done, a correspondence table between the logical node and the physical node is established, and it is assumed that the node 1 is adopted.

 , 6, 3, 4 form a partition, as shown in Figure 4;

[0037] Assuming that each logical node is determined to be a NUMA domain, the actual physical distance of the node is obtained by querying the node correspondence table and the simulated topology matrix, and then multiplied by the transmission weight, which is assumed to be '10'. The NUMA domain settings are as follows:

[0038] node 0 1 2 3

0: 1 20 50 70

[0040] 1: 20 1 70 50

2: 50 70 1 20

[0042] 3: 70 50 20 1

 The above embodiments are merely illustrative of the present invention, and are not intended to be limiting of the invention, and various changes and modifications can be made without departing from the spirit and scope of the invention. Therefore, all equivalent technical solutions are also within the scope of the invention, and the scope of the invention should be defined by the claims.

Claims

Claim  [Claim 1] A method for setting a NUMA domain in a computer system of a complex topology, wherein: the method calculates a weight by adding a weight to each link in the system topology, and calculates an actual physical node by adding The distance between the logical nodes is then calculated by the node correspondence table, thereby accurately setting the distance between the NUMA domains.  [Claim 2] The NUMA domain setting method in a computer system of a complex topology according to claim 1, wherein the method operates as follows: First, a transmission right is established for each transmission link of the computer system. Value, the longer the link, the larger the value;  Second, establish a topology simulation matrix for the system;  Then, each time the partition is set, a correspondence table between the logical node and the physical node is established, so that it is convenient to query the distance between the logical nodes;  Finally, after setting the NUMA domain, the exact distance of the logical node can be obtained by querying the corresponding table of the logical node and the physical node and the topology simulation matrix, thereby obtaining an accurate NU MA domain setting.  [Claim 3] The NUMA domain setting method in a computer system of a complex topology according to claim 1 or 2, wherein the topology simulation matrix is constructed as follows: Suppose there are K nodes in the system, xij Representing the closest distance between the i-th node and the j-th node, the distance is obtained by accumulating the transmission weights, where i and j are both physical node numbers.