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1. 发明授权

US11003992B2 Distributed training and prediction using elastic resources 有权
公开(公告)号：US11003992B2
公开(公告)日：2021-05-11
申请号：US15785074
申请日：2017-10-16
申请人： Facebook, Inc.
发明人： Lukasz Wesolowski , Mohamed Fawzi Mokhtar Abd El Aziz , Aditya Rajkumar Kalro , Hongzhong Jia , Jay Parikh
IPC分类号： G06N3/08 , G06N3/10
摘要： In one embodiment, a method includes establishing access to first and second different computing systems. A machine learning model is assigned for training to the first computing system, and the first computing system creates a check-point during training in response to a first predefined triggering event. The check-point may be a record of an execution state in the training of the machine learning model by the first computing system. In response to a second predefined triggering event, the training of the machine learning model on the first computing system is halted, and in response to a third predefined triggering event, the training of the machine learning model is transferred to the second computing system, which continues training the machine learning model starting from the execution state recorded by the check-point.

2. 发明申请

US20190114537A1 DISTRIBUTED TRAINING AND PREDICTION USING ELASTIC RESOURCES 审中-公开
公开(公告)号：US20190114537A1
公开(公告)日：2019-04-18
申请号：US15785074
申请日：2017-10-16
申请人： Facebook, Inc.
发明人： Lukasz Wesolowski , Mohamed Fawzi Mokhtar Abd El Aziz , Aditya Rajkumar Kalro , Hongzhong Jia , Jay Parikh
IPC分类号： G06N3/08 , G06N3/10
摘要： In one embodiment, a method includes establishing access to first and second different computing systems. A machine learning model is assigned for training to the first computing system, and the first computing system creates a check-point during training in response to a first predefined triggering event. The check-point may be a record of an execution state in the training of the machine learning model by the first computing system. In response to a second predefined triggering event, the training of the machine learning model on the first computing system is halted, and in response to a third predefined triggering event, the training of the machine learning model is transferred to the second computing system, which continues training the machine learning model starting from the execution state recorded by the check-point.

3. 发明申请

US20190005075A1 REDUCING DATA STORAGE REQUIREMENTS 审中-公开
公开(公告)号：US20190005075A1
公开(公告)日：2019-01-03
申请号：US15638588
申请日：2017-06-30
申请人： Facebook, Inc.
发明人： Hongzhong Jia , Rajiv Krishnamurthy , Lin Qiao , Joshua David Metzler
IPC分类号： G06F17/30 , G06F9/30 , G06F17/15
摘要： A dataset management system (“system”) reduces the amount of data to be stored for future analyses. The system determines a sampling rate of the data based on a required level of accuracy, and samples the data at the determined sampling rate. Initially, all data transactions (“full dataset”) and the sampled data (“sampled dataset”) are logged and stored. Based upon a trigger condition, e.g., after a specified period, the full dataset and the sampled dataset are analyzed separately and the analysis results are compared. If the comparison is sufficiently similar (i.e., the sampling produces a sufficiently accurate set of data or a variance between the analysis results of the datasets is within a specified threshold), the system discontinues full data logging and stores only the sampled dataset. Further, the full dataset is deleted. The sampling thus reduces the required data volume significantly, thereby minimizing consumption of the storage space.

4. 发明申请

US20180146032A1 TIERED INFRASTRUCTURE FOR HANDLING DATA 审中-公开
公开(公告)号：US20180146032A1
公开(公告)日：2018-05-24
申请号：US15360436
申请日：2016-11-23
申请人： Facebook, Inc.
发明人： Jay Parikh , Hongzhong Jia
IPC分类号： H04L29/08 , H04L29/12
CPC分类号： H04L67/1097 , G06Q50/01 , H04L67/2823
摘要： The disclosure is directed to receiving a digitized content item that is indicated to be shared with users (e.g., all, some, or one) of a social networking system; selecting, based on one or more characteristics of the digitized content item, a second server computing device at which to further compute or store the digitized content item; and transmitting, to the second computing device, the digitized content item for storage at the second computing device. At least one of the characteristics can be a classification of a user who transmitted the digitized content item via the data communications network. By selecting second server computing devices based on characteristics, data communications network performance can be improved.

5. 发明申请

US20170214751A1 MIGRATING A CHAT MESSAGE SERVICE PROVIDED BY A CHAT SERVER TO A NEW CHAT SERVER 审中-公开
公开(公告)号：US20170214751A1
公开(公告)日：2017-07-27
申请号：US15432827
申请日：2017-02-14
申请人： Facebook, Inc.
发明人： Hongzhong Jia , Xiaojun Liang , Li Hua , Goranka Bjedov
IPC分类号： H04L29/08 , H04L12/58
CPC分类号： H04L67/148 , H04L12/1813 , H04L51/04 , H04L67/1027 , H04L67/1036
摘要： A chat messaging service provided for a chat user is migrated. At a second chat server from a first chat server, static information associated with a chat user is received. At the second chat server from the first chat server, dynamic information associated with the chat user is received. At least a portion of the dynamic information is received after the chat user is indicated as being associated with the migration state. After the chat user is no longer indicated as being associated with the migration state, a chat message for the chat user is received at the second chat server.

6. 发明授权

US09377958B2 Allocation of read/write channels for storage devices 有权
标题翻译：为存储设备分配读/写通道
公开(公告)号：US09377958B2
公开(公告)日：2016-06-28
申请号：US14457864
申请日：2014-08-12
申请人： Facebook, Inc.
发明人： Narsing Vijayrao , Hongzhong Jia , Jason Taylor
IPC分类号： G06F13/28 , G06F3/06
CPC分类号： G06F3/0613 , G06F3/06 , G06F3/061 , G06F3/0659 , G06F3/0683 , G06F12/0246 , G06F13/1684
摘要： Channel performance can be improved in a storage device, such as a flash memory or a flash-based solid state drive, by dynamically provisioning available data channels for both write and read operations. In one aspect, a set of available data channels on a storage device is partitioned into a set of write channels and a set of read channels according to a read-to-write ratio. Next, when an incoming data stream of mixed read requests and write requests arrives at the storage device, the allocated read channels process the read requests on a first group of memory blocks, which does not include garbage collection and write amplification on the first group of memory blocks. In parallel, the allocated write channels process the write requests on a second group of memory blocks, which does include garbage collection and write amplification on the second group of memory blocks.
摘要翻译：通过为写操作和读操作两者动态地提供可用的数据通道，可以改善诸如闪存或基于闪存的固态驱动器之类的存储设备的通道性能。在一个方面，存储设备上的一组可用数据通道根据读/写比率被划分成一组写通道和一组读通道。接下来，当混合读取请求和写入请求的输入数据流到达存储设备时，分配的读取通道在第一组存储器块上处理读取请求，该第一组存储器块不包括第一组中的垃圾收集和写入放大记忆块。并行地，分配的写入通道在第二组存储器块上处理写入请求，其中包括在第二组存储器块上的垃圾收集和写入放大。

7. 发明授权

US09336155B2 Statistical cache promotion 有权
公开(公告)号：US09336155B2
公开(公告)日：2016-05-10
申请号：US14841518
申请日：2015-08-31
申请人： Facebook, Inc.
发明人： Hongzhong Jia , Xiaojun Liang , Jason Taylor
IPC分类号： G06F12/00 , G06F12/08 , G06F12/12 , G06F13/00
CPC分类号： G06F12/0888 , G06F12/0897 , G06F12/122 , G06F2212/283 , G06F2212/604
摘要： Storing data in a cache is disclosed. It is determined that a data record is not stored in a cache. A random value is generated using a threshold value. It is determined whether to store the data record in the cache based at least in part on the generated random value.

8. 发明授权

US10313452B2 Migrating a chat message service provided by a chat server to a new chat server 有权
公开(公告)号：US10313452B2
公开(公告)日：2019-06-04
申请号：US15432827
申请日：2017-02-14
申请人： Facebook, Inc.
发明人： Hongzhong Jia , Xiaojun Liang , Li Hua , Goranka Bjedov
IPC分类号： H04L29/08 , H04L12/18 , H04L12/58
摘要： A chat messaging service provided for a chat user is migrated. At a second chat server from a first chat server, static information associated with a chat user is received. At the second chat server from the first chat server, dynamic information associated with the chat user is received. At least a portion of the dynamic information is received after the chat user is indicated as being associated with the migration state. After the chat user is no longer indicated as being associated with the migration state, a chat message for the chat user is received at the second chat server.

9. 发明授权

US10244052B2 Tiered infrastructure for handling data 有权
公开(公告)号：US10244052B2
公开(公告)日：2019-03-26
申请号：US15360436
申请日：2016-11-23
申请人： Facebook, Inc.
发明人： Jay Parikh , Hongzhong Jia
IPC分类号： H04L29/08 , G06Q50/00
摘要： The disclosure is directed to receiving a digitized content item that is indicated to be shared with users (e.g., all, some, or one) of a social networking system; selecting, based on one or more characteristics of the digitized content item, a second server computing device at which to further compute or store the digitized content item; and transmitting, to the second computing device, the digitized content item for storage at the second computing device. At least one of the characteristics can be a classification of a user who transmitted the digitized content item via the data communications network. By selecting second server computing devices based on characteristics, data communications network performance can be improved.

10. 发明授权

US09697247B2 Tiered data storage architecture 有权
公开(公告)号：US09697247B2
公开(公告)日：2017-07-04
申请号：US14333391
申请日：2014-07-16
申请人： Facebook, Inc.
发明人： Narsing Vijayrao , Hongzhong Jia , Jason Taylor , Mark Douglas Callaghan , Domas Mituzas
IPC分类号： G06F7/00 , G06F17/30
CPC分类号： G06F17/30365 , G06F17/30598 , G06F17/30864
摘要： The disclosure is directed to storing data in different tiers of a database based on the access pattern of the data. Immutable data, e.g., data that does not change or changes less often than a specified threshold, is stored in a first storage tier of the database, and mutable data, e.g., data that changes more often than immutable data, is stored in a second storage tier of the database. The second storage tier of the database is more performant than the first storage tier, e.g., the second storage tier has a higher write endurance and a lower write latency than the first storage tier. All writes to the database are performed at the second storage tier and reads on both storage tiers. The storage tiers are synchronized, e.g., the set of data is copied from the second to the first storage tier based on a trigger, e.g., a specified schedule.

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