CN114090317A - High-availability infant breathing equipment and system - Google Patents

High-availability infant breathing equipment and system Download PDF

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CN114090317A
CN114090317A CN202111356309.0A CN202111356309A CN114090317A CN 114090317 A CN114090317 A CN 114090317A CN 202111356309 A CN202111356309 A CN 202111356309A CN 114090317 A CN114090317 A CN 114090317A
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time
state information
sending
watchdog
infant breathing
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CN114090317B (en
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王艳
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Henan Childrens Hospital Zhengzhou Childrens Hospital
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Henan Childrens Hospital Zhengzhou Childrens Hospital
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/14—Error detection or correction of the data by redundancy in operation
    • G06F11/1402—Saving, restoring, recovering or retrying
    • G06F11/1415—Saving, restoring, recovering or retrying at system level
    • G06F11/1438—Restarting or rejuvenating
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/0703—Error or fault processing not based on redundancy, i.e. by taking additional measures to deal with the error or fault not making use of redundancy in operation, in hardware, or in data representation
    • G06F11/0751—Error or fault detection not based on redundancy
    • G06F11/0754—Error or fault detection not based on redundancy by exceeding limits
    • G06F11/0757—Error or fault detection not based on redundancy by exceeding limits by exceeding a time limit, i.e. time-out, e.g. watchdogs

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Debugging And Monitoring (AREA)
  • Retry When Errors Occur (AREA)

Abstract

The invention provides high-availability infant breathing equipment and a system, and particularly comprises a check point module, a processing module and a control module, wherein the check point module is used for storing state information of a designated process into a nonvolatile storage medium when a preset condition is met, and recording the storage time of the state information of the process; the watchdog module is used for sending a restarting signal to a microprocessor of the infant breathing equipment if a dog feeding signal sent by the system is not received within a preset time, and recording the time for sending the restarting signal; sending the time of sending a restarting signal within a period of time stored by the watchdog module to the microprocessor within a preset time after the infant breathing equipment is restarted; and the state recovery module is used for determining and recovering the state information used by the appointed process in the infant breathing equipment according to the time for sending the restart signal in the period of time. The invention avoids the problem that the watchdog repeatedly restarts the breathing machine after recovering to the process state generated by the check point, thereby improving the reliability of the breathing equipment for infants.

Description

High-availability infant breathing equipment and system
Technical Field
The application relates to the field of medical equipment, in particular to infant breathing equipment.
Background
The breathing machine is a device commonly used in clinic, can provide breathing support for a patient, improves the breathing of the patient, and plays an important role in maintaining the breathing of the patient. As the common equipment used in the respiratory emergency department, the breathing machine has two types of noninvasive breathing machines and invasive breathing machines, and the noninvasive breathing machine has no wound on the patient, so the noninvasive breathing machine is often adopted in the common auxiliary breathing. In the using process, due to the fact that a power supply is unstable, magnetic field interference and the like can cause an embedded respirator to have program run or deadlock, and further cause system jamming, for the program run, endless loop or system jamming, equipment is often restarted in a watchdog mode, the watchdog means that the watchdog is set in the equipment in a hardware or software mode, the system feeds dogs at regular time, the conditions that the system is jammed, runs and flies and the like cause that the dogs cannot be fed, and a watchdog module can send a restarting command to the equipment to prompt the equipment to restart.
However, if the breathing machine is restarted, the breathing machine cannot work for a short time, the life of a patient can be endangered in a short time under the conditions of difficult breathing and severe respiratory failure, children, especially infants, have limited expression capacity, and doctors or nurses cannot be informed in time when the breathing machine cannot work normally, so that the breathing machine is required to be repaired as soon as possible when the breathing machine fails, for example, the equipment is restarted, but medical staff cannot keep beside the breathing machine for 24 hours. Moreover, since the parameters of the equipment are all initialized to the original parameters after the equipment is restarted, the life-related equipment, such as a breathing machine, is required to be restarted and to be restored to the working state before the failure as much as possible, which has a key effect on improving the usability of the infant breathing machine.
Disclosure of Invention
To solve the above problem, in one aspect, the present invention provides a high availability infant breathing apparatus, the apparatus comprising the following modules:
the checkpoint module is used for saving the state information of the designated process into a nonvolatile storage medium when a preset condition is met, and recording the saving time of the state information of the process;
the watchdog module is used for sending a restarting signal to a microprocessor of the infant breathing equipment if a dog feeding signal sent by the system is not received within a preset time, and recording the time for sending the restarting signal; sending the time of sending a restarting signal within a period of time stored by the watchdog module to the microprocessor within a preset time after the infant breathing equipment is restarted;
and the state recovery module is used for determining and recovering the state information used by the appointed process in the infant breathing equipment according to the time for sending the restart signal in the period of time.
Preferably, the determining, according to the time at which the restart signal is sent within the period of time, state information used for recovering a specified process in the infant breathing apparatus includes:
sequencing the time of sending the restart signal in the period of time from near to far, and respectively recording as T0、T1、...、Tn-1Wherein n represents the number of times a restart signal is transmitted within the period of time; respectively calculating the time interval t of the restart signal sent in the period of timei＝|Ti-Ti+1|，i＝0、1、...、n-2；
Sorting the state information stored in the nonvolatile storage medium according to the sequence from near to far, and respectively recording the state information as s0、s1、...、smWherein m represents the number of the state information saved in the nonvolatile storage medium;
calculating tkAnd tk+1If the absolute value of the difference is less than the first threshold, k is k +1, and the calculation of t is continuedkAnd tk+1If the absolute value of the difference is always smaller than the first threshold, the infant breathing equipment enters a safe mode; otherwise, determining the state information used by the recovery process according to the values of k and m, wherein k is a positive integer with the initial value of 0, and k is not more than n-2; .
Preferably, the determining the state information used by the recovery process according to the values of k and m specifically includes: if k is less than or equal to m, then skThe corresponding state information is used as the state information used by the recovery process; otherwise, will smThe corresponding state information serves as state information used by the recovery process.
Preferably, the infant breathing apparatus entering the safe mode means that a user process is not loaded, a configuration file configured in advance is loaded in a system process, and the system process controls the operation of the infant breathing apparatus according to the configured configuration file.
Preferably, after the infant breathing apparatus enters the safe mode, the infant breathing apparatus further comprises: and emptying the data stored by the watchdog module, and restarting the watchdog module.
Preferably, the saving the state information of the designated process to the nonvolatile storage medium when the preset condition is satisfied specifically includes:
and periodically acquiring the data variation of the stack and the data variation of the data segment of each process in the designated process, and when any one of the data variation of the stack and the data variation of the data segment is larger than a second threshold value, executing the operation of saving the state information of the designated process to the nonvolatile storage medium.
Preferably, the specified course refers to a course using parameters set by a user, the user set parameters being one or more of maximum inspiratory pressure, terminal positive pressure breathing, continuous positive pressure breathing, oxygen concentration, delivered gas flow, inspiratory pressure, expiratory pressure, inspiratory time, expiratory time.
Preferably, the time for sending the restart signal within a period of time stored by the watchdog module within a preset time after the infant breathing apparatus is restarted is sent to the microprocessor, specifically: after init is completed, before the watchdog is opened, an instruction for reading the storage content of the watchdog is sent out, and the time for sending the restart signal in a period of time stored by the watchdog module is sent to the microprocessor.
In another aspect, the invention also provides a high availability infant breathing system, which comprises a power supply, a warming humidifier, an air hose and the device.
Finally, the invention also provides a high availability infant breathing system, which comprises a server and the device as described above; the device and the server transmit data via a network.
According to the invention, the watchdog module is used for acquiring the time of sending the restart instruction by the watchdog, selecting a point which is most suitable for recovering the process state from the process state information generated by utilizing the checkpoint technology according to the time of sending the restart instruction, and then recovering the system to the normal working state by utilizing the determined process state, so that on one hand, the reliability of the infant breathing machine is improved, and the condition that the breathing machine cannot work normally due to failure is avoided; on the other hand, according to the time of restarting the system by two watchdog times, the condition that the system is recovered to an unreliable state, namely the process is recovered and falls into a fault before restarting is avoided.
In addition, the invention only adopts the check point mode to generate the process state for the process using the user set parameters, thereby improving the efficiency of the system and preventing the excessive occupation of system resources.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic diagram of a watchdog architecture;
FIG. 2 is a diagram of checkpointing a process state;
FIG. 3 is a schematic structural view of the present invention;
fig. 4 is a system configuration diagram of the present invention.
Detailed Description
In this document, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Detailed description of the preferred embodiment
The invention provides a high-availability infant breathing apparatus, which comprises the following modules:
the checkpoint module is used for saving the state information of the designated process into a nonvolatile storage medium when a preset condition is met, and recording the saving time of the state information of the process;
the checkpointing technique is to save the relevant information of the process at a proper time, and when the process needs to be restored, restore the process to a corresponding state by using the saved relevant information of the process, such as saving code segments, data segments, stacks and the like of the process.
The watchdog module is used for sending a restarting signal to a microprocessor of the infant breathing equipment if a dog feeding signal sent by the system is not received within a preset time, and recording the time for sending the restarting signal; sending the time of sending a restarting signal within a period of time stored by the watchdog module to the microprocessor within a preset time after the infant breathing equipment is restarted;
as shown in fig. 1, a schematic diagram of the connection between the watchdog and the microprocessor, the microprocessor feeds the watchdog regularly, and if the watchdog module fails to feed the watchdog in time due to system jamming or dead loop, the watchdog module sends a restart instruction to a reset pin of the microprocessor to restart the microprocessor. The watchdog may be a software watchdog or a hardware watchdog, and the hardware watchdog is implemented by a watchdog chip, such as MAX708, IMP813, or the like. In the present invention, the watchdog module is preferably a hardware watchdog.
And the state recovery module is used for determining and recovering the state information used by the appointed process in the infant breathing equipment according to the time for sending the restart signal in the period of time.
The state of the process can be obtained through the checkpoint and the process can be restored to the corresponding state. However, if the recovered state is executed next and enters a deadlock or runaway state, the watchdog module also sends a restart instruction to the microprocessor, which may cause a constant restart condition, which obviously affects the normal use of the ventilator. In extreme cases, after the saved process state is recovered, the watchdog is triggered again within a short time (for example, 10s), and the restarting of the breathing machine wastes a period of time, so that the breathing machine cannot work normally, and the life of the patient is endangered.
For example, the process state of the 40 th minute after the respiratory device is started is saved through a set check point, the watchdog module is triggered at the 20 th minute after the respiratory device is started, the system is restarted and is restored to the state of the 40 th minute process, at the moment, the system can continue to execute according to the state of the 40 th minute process, due to factors such as a program or a system bug, the program runs away or is in a deadlock state after the system runs for 20s, the watchdog is further triggered, the system is restarted, is restored to the state of the 40 th minute process again, and is restarted after the system runs for 20s, and the system falls into an infinite loop. According to the invention, the corresponding process state is selected according to the process state information of a plurality of time points stored in the check point and the time of sending the restart signal by the watchdog, so as to avoid the situation of the breathing machine.
Preferably, the determining, according to the time at which the restart signal is sent within the period of time, state information used for recovering a specified process in the infant breathing apparatus includes:
sequencing the time of sending the restart signal in the period of time from near to far, and respectively recording as T0、T1、...、Tn-1Wherein n represents the number of times a restart signal is transmitted within the period of time; respectively calculating the time interval t of the restart signal sent in the period of timei＝|Ti-Ti+1|，i＝0、1、...、n-2；
Sorting the state information stored in the nonvolatile storage medium according to the sequence from near to far, and respectively recording the state information as s0、s1、...、smWherein m represents the number of the state information saved in the nonvolatile storage medium;
calculating tkAnd tk+1If the absolute value of the difference is less than the first threshold, k is k +1, and the calculation of t is continuedkAnd tk+1If the absolute value of the difference is always smaller than the first threshold, the infant breathing equipment enters a safe mode; otherwise, determining the state information used by the recovery process according to the values of k and m, wherein k is a positive integer with the initial value of 0, and k is not more than n-2.
Preferably, the determining the state information used by the recovery process according to the values of k and m specifically includes: if k is less than or equal to m, then skThe corresponding state information is used as the state information used by the recovery process; otherwise, will smThe corresponding state information serves as state information used by the recovery process.
To facilitate understanding of the present invention, the following description is further made with reference to fig. 2 and a specific embodiment, but it should be understood that the embodiment is only an exemplary one and the present invention is not limited to the embodiment.
As shown in fig. 2, m-5 pieces of process state information, each of which is s, are stored in the system by the checkpoint0、s1、s2、s3、s4Wherein s is0Nearest to the current time, s4Farthest from the current moment;
meanwhile, the watchdog module respectively sends an over-restart instruction to the microprocessor at 10s, 30s, 50s, 100s, 500s and 1000s away from the current time, namely n is 6, T0＝10s、T1＝30s、T2＝50s、T3＝100s、T4＝500s、T5T is obtained as shown in table 1 below, 1000s0＝20s、t1＝20s、t2＝50s、t3＝400s、t4Assume that the first threshold is 50s, since t is 500s0And t1The absolute value of the difference is 0s, t1And t2The absolute value of the difference is 30s, t2And t3The absolute value of the difference is 350s, i.e. t2And t3The absolute value of the difference is larger than a first threshold value, k is 2, m is 5, and s is less than or equal to m2The corresponding process state is used as the state of the final recovery process. Further, in one embodiment, T0、T1、...、Tn-1May be a specific time, and is not particularly limited thereto.
TABLE 1
T0 10s
T1 30s
T2 50s
T3 100s
T4 500s
T5 1000s
In another embodiment, the watchdog module sends the restart command at the 20 th, 40 th, 60 th, 80 th, 100 th, 120 th, 140 th, 160 th, 180 th, and 200 th from the current time, and if the first threshold is still 50s, the watchdog module sends the restart command periodically or within a certain fluctuation range, which may be a problem with a program or hardware such as a timer, and thus the system cannot recover from the state saved by using the checkpoint, and after recovery, the watchdog module sends the restart command periodically or within a certain fluctuation range, in which case the infant breathing apparatus of the present invention enters the safe mode.
By adopting the method, the breathing equipment can be prevented from repeatedly loading the same stored process state after the distance watchdog module repeatedly sends the restart instruction, such as repeatedly loading s0And a case of repeated restart. In one embodiment, the physician may set the first threshold according to the patient's condition, and if the condition is mild, or if the set parameters do not significantly affect the patient, the first threshold may be set to a value that is too large, so that the system may be re-run from a certain range after the breathing apparatus is turned on.
In one embodiment, the infant breathing apparatus entering the safe mode means that the user process is not loaded, and a configuration file configured in advance is loaded in the system process, and the system process controls the operation of the infant breathing apparatus according to the configured configuration file.
If the state stored in the check point is less, or the time interval for restarting the watchdog is not changed greatly, in order to avoid repeated conditions, the invention also sets a safety mode of the infant breathing equipment, wherein in the safety mode, the breathing equipment provides breathing support for a patient in a safest mode, and although in the safety mode, parameters set by a doctor cannot be used, the safety mode can avoid conditions such as deadlock or program runaway and the like to a greater extent.
Preferably, after the infant breathing apparatus enters the safe mode, the infant breathing apparatus further comprises: and emptying the data stored by the watchdog module, and restarting the watchdog module.
The watchdog chip includes a counter, a register, a memory, etc. since the watchdog chip may also have problems such as program error, etc., after entering the secure mode, in one embodiment, the watchdog chip may be cleared of the data stored therein, and then restarted.
Preferably, the saving the state information of the designated process to the nonvolatile storage medium when the preset condition is satisfied specifically includes:
and periodically acquiring the data variation of the stack and the data variation of the data segment of each process in the designated process, and when any one of the data variation of the stack and the data variation of the data segment is larger than a second threshold value, executing the operation of saving the state information of the designated process to the nonvolatile storage medium.
The system comprises a plurality of processes, if the checkpoint saves the state information of all the processes, excessive system resources are occupied, and parameters related to respiration are important contents for adjusting the breathing machine. In one embodiment, the specified course refers to a course that uses parameters to user settings of one or more of maximum inspiratory pressure, terminal positive pressure breathing, continuous positive pressure breathing, oxygen concentration, delivered gas flow, inspiratory pressure, expiratory pressure, inspiratory time, expiratory time.
In order to recover the process in time, preferably, the time for sending the restart signal within a period of time stored by the watchdog module within a preset time after the infant breathing apparatus is restarted is sent to the microprocessor, specifically: after init is completed, before the watchdog is opened, an instruction for reading the storage content of the watchdog is sent out, and the time for sending the restart signal in a period of time stored by the watchdog module is sent to the microprocessor.
Detailed description of the invention
The invention also provides a high-availability infant breathing system which comprises a power supply, a warming humidifier, an air hose and the equipment in the first embodiment. In one embodiment, as shown in fig. 3, the infant breathing apparatus includes a memory 31, a display 32, a microprocessor 33, an input device 34, a watchdog 35, a power source, a warming humidifier, an air hose not shown.
Detailed description of the preferred embodiment
As shown in fig. 4, the present invention further provides a high availability infant breathing system, which comprises a server 42 and a device 41 according to the first embodiment; the device and the server transmit data via a network. In one embodiment, the system further comprises a mobile terminal, and the infant breathing system is connected with the server through the mobile terminal.
The above-described embodiments of the apparatus are merely illustrative, and some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by adding a necessary general hardware platform, and of course, can also be implemented by a combination of hardware and software. With this understanding in mind, the above-described aspects and portions of the present technology which contribute substantially or in part to the prior art may be embodied in the form of a computer program product, which may be embodied on one or more computer-usable storage media having computer-usable program code embodied therein, including without limitation disk storage, CD-ROM, optical storage, and the like.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. A high availability infant breathing apparatus, characterized in that the apparatus comprises the following modules:
the checkpoint module is used for saving the state information of the designated process into a nonvolatile storage medium when a preset condition is met, and recording the saving time of the state information of the process;
the watchdog module is used for sending a restarting signal to a microprocessor of the infant breathing equipment if a dog feeding signal sent by the system is not received within a preset time, and recording the time for sending the restarting signal; sending the time of sending a restarting signal within a period of time stored by the watchdog module to the microprocessor within a preset time after the infant breathing equipment is restarted;
and the state recovery module is used for determining and recovering the state information used by the appointed process in the infant breathing equipment according to the time for sending the restart signal in the period of time.
2. The device according to claim 1, characterized in that said determination of the status information used for the resumption of a given process in the infant breathing device, according to the time of sending a restart signal during said period of time, is in particular:
sequencing the time of sending the restart signal in the period of time from near to far, and respectively recording as T0、T1、...、Tn-1Wherein n represents the number of times a restart signal is transmitted within the period of time; respectively calculating the time interval t of the restart signal sent in the period of timei＝|Ti-Ti+1|，i＝0、1、...、n-2；
Sorting the state information stored in the nonvolatile storage medium according to the sequence from near to far, and respectively recording the state information as s0、s1、...、smWherein m represents the number of the state information saved in the nonvolatile storage medium;
calculating tkAnd tk+1If the absolute value of the difference is less than the first threshold, k is k +1, and the calculation of t is continuedkAnd tk+1If the absolute value of the difference is always less than the secondIf the threshold value is one, the infant breathing equipment enters a safety mode; otherwise, determining the state information used by the recovery process according to the values of k and m, wherein k is a positive integer with the initial value of 0, and k is not more than n-2.
3. The apparatus according to claim 2, wherein the determining the state information used by the recovery process according to the values of k and m specifically includes: if k is less than or equal to m, then skThe corresponding state information is used as the state information used by the recovery process; otherwise, will smThe corresponding state information serves as state information used by the recovery process.
4. The apparatus of claim 2, wherein the infant breathing apparatus entering the safe mode is not loaded with a user process, and a pre-configured profile is loaded in a system process, and the system process controls the operation of the infant breathing apparatus according to the configured profile.
5. The apparatus of claim 4, further comprising, after the infant breathing apparatus enters the safe mode: and emptying the data stored by the watchdog module, and restarting the watchdog module.
6. The apparatus according to claim 1, wherein the saving of the state information of the specified process to the nonvolatile storage medium when the preset condition is satisfied is specifically:
and periodically acquiring the data variation of the stack and the data variation of the data segment of each process in the designated process, and when any one of the data variation of the stack and the data variation of the data segment is larger than a second threshold value, executing the operation of saving the state information of the designated process to the nonvolatile storage medium.
7. The apparatus of claim 1, wherein the specified course is a course that uses parameters to user settings, the user settings being one or more of a maximum inspiratory pressure, a positive end-of-breath pressure, a continuous positive pressure breath, an oxygen concentration, a flow of ventilation gas, an inspiratory pressure, an expiratory pressure, an inspiratory time, and an expiratory time.
8. The device according to claim 1, wherein the time for sending the restart signal within a period of time stored by the watchdog module within a preset time after the infant breathing device is restarted is sent to the microprocessor, specifically: after init is completed, before the watchdog is opened, an instruction for reading the storage content of the watchdog is sent out, and the time for sending the restart signal in a period of time stored by the watchdog module is sent to the microprocessor.
9. A high availability infant breathing system, the system comprising a power source, a warming humidifier, an air hose, and the apparatus of any one of claims 1-8.
10. A high availability infant breathing system, characterized in that the system comprises a server and a device according to any of claims 1-8; the device and the server transmit data via a network.
CN202111356309.0A 2021-11-16 2021-11-16 High-availability infant breathing equipment and system Active CN114090317B (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050132250A1 (en) * 2003-12-16 2005-06-16 Hewlett-Packard Development Company, L.P. Persistent memory device for backup process checkpoint states
JP2008003691A (en) * 2006-06-20 2008-01-10 Hitachi Ltd Process recovery method for computer and check point restart system
US20110119526A1 (en) * 2009-11-13 2011-05-19 International Business Machines Corporation Local rollback for fault-tolerance in parallel computing systems
US20130061090A1 (en) * 2011-09-06 2013-03-07 Electronics And Telecommunications Research Institute Partial rebooting recovery apparatus and method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050132250A1 (en) * 2003-12-16 2005-06-16 Hewlett-Packard Development Company, L.P. Persistent memory device for backup process checkpoint states
JP2008003691A (en) * 2006-06-20 2008-01-10 Hitachi Ltd Process recovery method for computer and check point restart system
US20110119526A1 (en) * 2009-11-13 2011-05-19 International Business Machines Corporation Local rollback for fault-tolerance in parallel computing systems
US20130061090A1 (en) * 2011-09-06 2013-03-07 Electronics And Telecommunications Research Institute Partial rebooting recovery apparatus and method

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