JPH0680918B2 - System power controller - Google Patents

Description

The present invention relates to a power supply control system in a liquid-cooled electronic computer or the like. In computers and the like composed of high heat-generating elements such as LSI and VLSI, the air-cooling system is reaching its limit in order to cool the large amount of heat generated by them, and is shifting to the liquid-cooling system.

In the cooling water circulation device used in the liquid cooling system, the temperature of the cooling water is not always the specified temperature (usually about 20 ° C) when the power is first turned on, and it is necessary to raise this to the specified temperature. .

That is, unless the water temperature of the cooling water circulation device is raised to a certain value or higher, the operating temperature of the element used for the electronic computer to be cooled cannot be satisfied, or dew condensation may occur if it is used at a low temperature. , It may lead to malfunction of the device and destruction of the device. Therefore, until the temperature of the cooling water rises to the specified temperature, it is not possible to turn on the power to the computer, etc., and it takes a long time (several minutes to several tens of minutes) to operate, so this time must be shortened. Is.

[Prior Art] As described above, when the power of the cooling water circulation device is turned on, it is necessary to raise the temperature of the cooling water to a specified temperature. Therefore, conventionally, the following two methods have been adopted. .

(A) A heater is provided in the cooling water circulation device, and the heater raises the temperature to a specified temperature.

(B) A heater is not provided in the cooling water circulation device, and heat is generated by the pump or the temperature is raised to the specified temperature only by the air conditioner.

FIG. 4 is a system configuration block diagram of a conventional example to which the above (a) is applied. In the figure, 1 is a system power supply control unit (SPC), 2 is a cooling water circulation unit (CDU), 3 is a central processing unit (CPU), 4 is a main memory unit (MSU), and 5 and 6 are peripheral system control units (PPCo). ~ N), 20 is a control unit (CONT), 21 is a pump, 22 is a water cooler, 23 is a temperature controller, 24 is a temperature sensor,
30 and 40 are unit power control units (UPU), 31 and 41 are power supply units (PWR), 32 and 42 are printed board shelves, 33 and 34 are printed circuit boards, 34 and 44 are LSIs, and 35 and 45 are cold plates. Shown respectively.

The cooling water delivered by the pump 21 of the CDU2 cools the cold plates 35, 45 that are thermally bonded to the LSIs 34, 44 of the CPU3 and MSU4, is warmed and returns to the CDU2, and is cooled by the water cooler 22. Is pumped again by CPU 21, CPU3, M
It is sent out to SU4 and repeats circulation in this way. Peripheral system control devices PPCo-n do not use water cooling because they do not use high density and high speed elements.

When the power is turned on, the temperature of the cooling water of the CDU 2 is measured by the temperature sensor 24. If this is below a specified value, the CONT 20 activates the heater of the temperature controller 23 to raise the water temperature to the specified temperature.

Further, the system power control device SPC1 controls the power-on sequence of the entire system. FIG. 5 shows a system power-on sequence.

The system power controller SPC1 first instructs the CDU2 to be turned on, and when the cooling water is heated in the CDU2, the READY signal rises from the CDU2 when the water temperature reaches the specified value, and the SPC1 turns on the CPU3. READY signal is raised when CPU3 completes the power-on sequence. In response to this, the SPC1 instructs the MSU4 to turn on the power, and when the MSU4 completes the sequence of turning on the power, the READY signal is raised.

Then, SPC1 receives this instruction to turn on the power of the peripheral system control device PPCo5, READY is raised when the power is turned on at PPCo5, and SPC1 instructs to turn on the power of the next PPC. In this way, the power-on of the last PPCn6 is completed, and when the READY signal rises, the system power-on is completed.

[Problems to be Solved by the Invention] Of the two methods for increasing the temperature of the cooling water of the CDU 1 when the power is turned on as described above, the heater (a) shown in FIG. 4 is used. The method has the problems that the heater is expensive, the volume of the CDU is large, and the reliability of the heater is poor. Further, in the case of the method of not using the heater of (b), there is a problem that it takes a very long time to reach the specified temperature.

Further, the time until the power-on completion state of the entire system is the same as the conventional example described above, after the CDU is in the power-on completion state, that is, the usable state, the main system (CP
U, MSU, etc.) and then the peripheral system (magnetic disk device, magnetic tape device, etc.) in sequence to perform power-on control requires a very long time.

[Means for Solving Problems] One means for solving the above problems is to use the temperature of the cooling water as a temperature at which the cooling water circulation device can be used (a preset dew condensation dangerous temperature or a minimum use temperature specified for the element). In order to start up to a temperature higher than the above), the heat generated from the high heat generating element such as LSI, VLSI of the device on the cooling side and / or the heat generated by the device independent of the power supply unit or the cooling water circulation device is used. This is solved by the power supply control method of the present invention.

Further, another means for solving the above problems is to provide an electronic device that does not depend on cooling by the cooling water circulation device until the cooling water circulation device reaches a state in which it can be used after the cooling water circulation device is turned on. This is solved by the power control method of the present invention configured to issue a power-on instruction and power-on.

[Operation] That is, when the power of the CDU is turned on, the device on the side to be cooled is turned on, and the heat generated by the high heat generating element such as LSI, VLSI, and / or the power supply unit or the cooling water circulation device is not depended on. By utilizing the heat of the device to raise the water temperature of the cooling water to the specified temperature, it is possible to shorten the startup time without using a heater.

In addition, by controlling the power-on of peripheral devices that do not depend on the cooling of the CDU before the CDU becomes ready for use, the time required for the power-on sequence can be shortened accordingly.

[Embodiment] The gist of the present invention will be specifically described with reference to the embodiments shown in Figs.

FIG. 1 is a system configuration block diagram of one embodiment of the present invention. In the figure, the same symbols as those in FIG. 4 indicate the same objects. FIG. 4 differs from FIG. 2 in that the temperature regulator 23 in the cooling water circulation device CDU1 is deleted.

FIG. 2 is a system power-on sequence diagram in one embodiment of the present invention. As shown in the figure, the system power control device SPC1 immediately instructs the CPU3 to power on after instructing to power on the CDU2, and the CPU3 ends the power-on sequence and raises the READY signal. When CPU3 is powered on, its LS
The I and VLSI generate heat to heat the cooling water, but at this point the logic operation has not been performed yet.

When the temperature of the cooling water reaches the specified temperature at point, the READY signal is raised from CDU2. As a result, SPC1 becomes MSU
4 Power-on is instructed, and when the power-on is completed, PPCo5,
Then, the power-on of the next PPC is instructed. Last PPCn to R
When the EADY signal rises, the system power is turned on and the computer system is ready for operation.

Regarding the method of utilizing the heat generated by the power supply unit or the device that does not depend on the cooling water circulation device (including exhaust heat from air cooling), replace the CPU3 described in the embodiment of FIG. 1 with a device that does not depend on the cooling water circulation device. Therefore, the explanation is omitted here.

FIG. 3 is a system power-on sequence diagram of the second embodiment of the present invention. As shown in the figure, the SPC1 issues a power-on instruction to the PPCo5 and PPCn6 that does not depend on the cooling of the CDU1, after the CDU2 is turned on and before the CDU2 becomes usable. From the CDU2, the temperature of the cooling water reaches the specified temperature.
When the READY signal rises, the SPC1 issues a power-on instruction to the MSU4, then issues a power-on instruction to the MSU4, and upon receipt of the completion report READY signal, the system power-on completion state is entered.

In this way, the time from the start of the system power-on control to the completion of the system power-on can be shortened. Compared to the conventional example, the time saved is CDU2
This is the time required for the power-on sequence of PPCo5 and PPCn6 that does not depend on the cooling of.

[Effects of the Invention] As described above, according to the power supply control method of the present invention, the time from the start of the system power-on control to the completion of power-on is controlled by using a heater having problems in cost, required volume and reliability. Without doing so, it can be greatly shortened, and the effect of improving the operating rate of the electronic computer system is great.

[Brief description of drawings]

FIG. 1 is a system configuration block diagram of one embodiment of the present invention, FIG. 2 is its system power-on sequence diagram, FIG. 3 is a system power-on sequence diagram of the second embodiment, and FIG. 4 is a conventional example. FIG. 5 shows a system configuration block diagram and FIG. 5 shows a conventional power-on sequence diagram. In the drawing, 1 is a system power supply control unit (SPC), 2 is a cooling water circulation unit (CDU), 3 is a central processing unit (CPU), 4 is a main memory unit (MSU), and 5 and 6 are peripheral system control units (PPCo). ~ PPCn), 20 control unit (CONT), 21 pump, 22 water cooler, 23 temperature controller, 24 temperature sensor, 30,40 unit power controller (UPC), 31,41 power source Units (PWR), 32 and 42 are printed board shelves, 33 and 43 are printed circuit boards, 34 and 44 are LSI and VLSI, and 35 and 45 are cold plates.

Claims (3)

[Claims] 1. A cooling water circulating device for cooling an electronic device composed of high heat-generating elements such as LSI and VLSI, and a plurality of electronic devices composed of high heat-generating elements such as LSI and VLSI and cooled by the cooling water circulating device. And a plurality of electronic devices that do not have the high heat generating element and perform cooling without depending on the cooling water circulation device, and cause each of the electronic devices and the cooling water circulation device to be turned on and off in a predetermined sequence. In the electronic equipment system including the system power supply control device for controlling as described above, when the system power supply is turned on, the system power supply control device issues a power-on instruction to the cooling water circulation device and then the cooling water temperature sensor of the cooling water circulation device. If the temperature shown by is below the preset condensation dew temperature, immediately give an instruction to turn on the device cooled by the cooling water circulation device, and
When the temperature of the cooling water becomes higher than the set temperature due to the heat generated by the high heat generating element such as LSI, VLSI, etc., the power-on instruction is sequentially given to the remaining electronic devices according to the predetermined sequence to complete the system power-on state. A system power supply control device characterized by being configured as follows. 2. A pipe for heating the cooling water of the cooling water circulation device by exhausting an electronic device which does not have the high heat generating element and cools without depending on the cooling water circulation device in the electronic equipment system having the above structure. When the system power is turned on, the system power control device, if the temperature indicated by the cooling water temperature sensor is below a preset dew condensation dangerous temperature after issuing a power-on instruction to the cooling water circulation device, An electronic device equipped with a water heating pipe, or an electronic device equipped with the cooling water heating pipe and an electronic device for cooling depending on the cooling water circulation device is issued a power-on instruction, and the cooling water temperature is equal to or higher than the set temperature. When it becomes, the remaining electronic devices are configured to sequentially give power-on instructions according to the above-mentioned predetermined sequence to complete the system power-on. The system power supply control device according to claim 1. 3. A cooling water circulating device for cooling an electronic device composed of high heat-generating elements such as LSI and VLSI, and a plurality of electronic devices composed of high heat-generating elements such as LSI and VLSI and cooled by the cooling water circulating device. And a plurality of electronic devices that do not have the high heat generating element and perform cooling without depending on the cooling water circulation device, and cause each of the electronic devices and the cooling water circulation device to be turned on and off in a predetermined sequence. In the electronic equipment system including the system power supply control device for controlling as described above, when the system power supply is turned on, the system power supply control device, after instructing the cooling water circulation device to turn on the power, controls the cooling water temperature sensor of the cooling water circulation device. If the temperature shown is below the preset dangerous condensation temperature, the power-on instruction is sequentially issued to a plurality of electronic devices that do not depend on the cooling by the cooling water circulation device. When the temperature of the cooling water becomes equal to or higher than the set temperature, the system power supply control is configured so that the remaining electronic devices are sequentially instructed to power on according to a predetermined sequence to complete the system power-on. apparatus.