SU1667094A1 - Computing facilities switching system - Google Patents

Abstract

The invention relates to computing and can be used to build systems with distributed information processing. The aim of the invention is to improve the reliability of the system by reducing communications and simplifying the hardware in the switching system. The switching system of computing devices contains N computing modules 1, L of which are control computing modules (L * 98N), M switching modules 2, each of which consists of the first and second multiplexers 3, 4, the first and second blocks 5, 6 subscriber selections, 7 exchange blocking trigger, exchange register 8, group 9 elements OR. The switching system has a group of outputs 10 exchange, a group of inputs 11 exchange. Control computational modules 1 have a group of control outputs 12 and a group of inputs 13 of the survey. 2 Il.

Description

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The invention relates to computing and can be used to build systems with distributed information processing.

The purpose of the invention is to increase the reliability of the system by reducing communications and simplifying the hardware in the switching system between the computing modules of the system.

Figure 1 shows the structural scheme of the switching system; figure 2 - examples of the possible organization of exchange routes between subscribers.

The switching system (Fig. 1) contains n computational modules 1, I of which includes control computational modules (Kn). m switching modules 2 each of which contains the first and second multiplexers 3 and 4, the first and second blocks 5 and 6 of the subscriber selection, the trigger 7 interlock, the exchange register 8, the group of elements OR 9.

The switching system has a group of outputs 10 exchange, a group of inputs 11 exchange. Control computational modules 1 have a group of control outputs 12, a group of inputs 13 of the survey.

The system works as follows

Any combination of computing modules 1 can be connected to each switching module 2. Each module provides communication between any two computing modules 1 connected to it (subscribers). In this case, at the same time, any number of modules can be used, which allows for the establishment of various exchange routes between the computational modules 1 (subscribers).

On figa shows the exchange routes in two parallel paths of two pairs of subscribers; first and second and 1st and nth; on Fig - between the first and second subscribers with the reservation of the first and second modules 2; Fig. 2b illustrates the connection scheme of the first subscriber to the second and 1st subscribers; on figg - the first subscriber to the 1st and n-th subscribers and the 1st subscriber to the first and n-th subscribers.

The exchange task between subscribers is carried out using one of the control computing modules 1, for example, the first module 1 (FIG. 1), which, through a group of polling inputs 13, sequentially determines the mHsaef state of registers 8 to all m switching modules 2. Analyzing the codes at the Outputs of the address of the first and second subscribers of the registers 8 of the exchange of all m modules, the first control computing module determines the modules involved and the addresses of the subscribers conducting the exchange. The zero state of the exchange register 8 is a sign of the absence of this module. If there are exchange-free, for example, n-th subscriber 1 and first module 2, the exchange route can be set: n-th subscriber 1 — first module 2 — first subscriber 1 (i.e., control computing module 1 itself).

For this, the first module 1, through the group of control outputs 12 and the group of elements OR 9, turns on the exchange lock trigger 7, from whose output the exchange enable signals of multiplexers 3 and 4 receive the exchange lock signal, then through the outputs 12 to the exchange register 8 the code is written addresses, respectively, of the nth and first modules 2, which, from the outputs of the exchange register 8, arrive respectively at the address inputs of the multiplexer 3 and the subscriber selection unit 6 and the multiplexer 4 and the subscriber selection unit 5. Then the first module 1 resets the interlock trigger 7 to zero through the group of elements OR 9, allowing the passage of information through multiplexers 3 and 4 to the data inputs of blocks 5 and 6. As a result, the groups of outputs and exchange inputs of the nth module 1 are connected respectively to the group the exchange inputs and the group of outputs of the exchange of the first module 1 form a ready-to-exchange duplex communication line.

In case, for example, the control module 1 establishes an exchange route between two other subscribers, for example, between the 1st and the nth subscribers, then it becomes necessary to issue commands to the subscribers for the exchange. The switching system provides the ability to set the exchange in various ways, for example, through the first module 2, exchange routes are sequentially set and exchange commands are transmitted: first module 1 1st module 1, then first module 1 to nth module 1, and finally the route is established exchange between 1st and nth modules 1. Commands for exchanging between 1st and nth subscribers from the control computing module 1 can also be achieved by transmitting control commands to subscribers, for example, through other free or specially allotted for For these purposes, the modules with the organization of communications are similar to Fig. 2d. Further exchanges between 1st and nth subscribers can be managed by their own software or hardware.

When writing to the first and second parts of the register 8 exchange code with the addresses of one

the subscriber of his group of exchange outputs is connected to the group of exchange inputs, which provides a simple organization of checks for subscribers and switching equipment.

After the subscribers have completed the exchange session (determined by polling the subscribers, the monitoring time has elapsed, etc.), the control computing module 1 can release the used switching module by resetting its exchange register 8 to zero.

Eliminating the access of some subscribers to each other, along with software locks with a computer, is also possible by connecting to each of the m modules 2 only those modules 1 between which exchange is allowed. The switching system in this case will consist of several subscriber exchange subsystems connected to different switching modules of the same type.

The group of elements OR 9 contains (by the number of communication lines in the control buses) a set of elements AND PI, the inputs of each of which are connected to the group of control outputs 12 of all the control computing modules 1. And the outputs - with the corresponding inputs (data, synchronization, reset to zero and others.) register 8 exchange and trigger 7 lock exchange. Writing code to exchange register 8 may be performed in a sequential or parallel manner.

When the exchange lock trigger 7 is turned on, the exchange enable signal from the multiplexers 3 and 4 receives the exchange lock signal through this switching module, which, for example, eliminates the specification of false exchange routes when the codes on the exchange register 8 are sequentially shifted.

Claims (1)

The invention The switching system of computing devices, containing n computing modules, I of which are control computing modules (I On), m switching modules, each of which contains the first and second multiplexers, the first and second blocks of the choice of the subscriber, and j second data inputs (J - 1, p) of the first and second multiplexers of each 1st (I - 1, t) switching module are connected and are the jth information inputs of the 1st switching module and are connected to the group of exchange outputs J- ro computing module, different from those m that, with a view increase the reliability of the system, by reducing communications and simplifying the equipment in the switching system, the exchange lock trigger, the exchange register and the group are entered into each switching module of the system OR elements, and the Jth input 0 of the TTJ elements OR of the group of each 1st switching module is connected to the control output of the j-ro group of the controlling computing module and is the jth the control input of the j-ro group of the switching module, and the outputs of the elements of the OR group of each 1st switching module are connected to the corresponding synchronization inputs, set to O, set in 1 exchange interlock trigger and synchronization input, setting in O and information input of the exchange register of the 1st switching module, output of the exchange interlock trigger of each 1st switching module is connected to the exchange enable input of the first and second multiplexers of the 1st switching module, address output the first subscriber of the exchange register of each 1st switching module is connected to the address inputs the first multiplexer and the second subscriber selection block of the 1st switching module, the output address of the second subscriber of the exchange register of every 1st switching module is connected to the address inputs of the second the multiplexer and the first subscriber selection block of the 1st switching module, the output of the blocking trigger and the address outputs of the first and second subscriber of the exchange register of each 1st switching module are connected to the 1st polling inputs of the group of each K-th (K Tj) control computing module , the outputs of the first and second multiplexers of each 1st switching module are connected respectively to the data inputs of the first and second subscriber selection blocks of the 1st switching module, je outputs O ° 1, n) of the first and second subscriber selection blocks of each 1st module ommutatsii are combined and j-th information the output of the 1st switching module, each J-th information output of each switching module is connected to the group of inputs of the j-ro exchange of the computing module. Fig 7. d)