On February 29, Alibaba Cloud cut the price of its cloud products on its official website across the board. The average price cut was more than 20%, with a maximum of 55%.

If you participate in the survey of Alibaba Cloud ECS developers' products, the top 200 will receive 100-200 yuan ECS threshold free vouchers!

The complete set of Palu's strategies: from the purchase of ECS to the completion of automated deployment, as well as video tutorials and hands-on teaching, various game FAQs are constantly updated

AIACC Training supports distributed training based on models built by mainstream AI (including PyTorch, TensorFlow, MXNet, Caffe, etc.). At the interface level, AIACC Training is currently compatible with PyTorch DDP and Horovod APIs. For training codes that use the above distributed training methods natively, it can achieve insensitive performance acceleration. This article will introduce you to various ways to install AIACC Training 1.5.0.

Since PyTorch 1. x released its iteration, distributed training using PyTorch's native DDP has gradually become the mainstream. This article introduces how to use AIACC Training to accelerate the distributed training of models built based on PyTorch framework, as well as possible problems and solutions.

At present, the mainstream way for TensorFlow to conduct data distributed training is Horovod. AIACC Training 1.5 supports the use of Horovod API compatible ways to accelerate TensorFlow distributed training. This article introduces the specific operations and possible problems of using the AIACC Training TensorFlow version.

Because MXNet supports KVStore and Horovod, AIACC Training 1.5 can support the use of KVStore to accelerate MXNet distributed training. It also supports Horovod distributed training, and is seamlessly compatible with the API version of Horovod.

Deepnccl is an AI communication acceleration library for multi GPU interconnection developed for Alibaba Cloud DPCA heterogeneous products. It is used to improve communication efficiency in AI distributed training or multi card reasoning tasks. This article mainly introduces the architecture, optimization principle and performance description of Deepnccl.

The second session of the [Open Course on Elastic Computing Technology - ECS Security Season] was brought by Chen Huaike, an Alibaba Cloud elastic computing expert. This article is organized from his course for you to read.

DeepGPU-LLM is a large language model (LLM) reasoning engine developed by Alibaba Cloud based on GPU ECS. In processing large language model tasks, this reasoning engine can provide you with high-performance large model reasoning services.

First choice for price performance, preferential cloud servers, personal developers, students, small and micro businesses and the public are on the line! The price is as low as 0.5 yuan/day!!! Low price is the first choice for the whole user group. No price increase for renewal!!

[June Change Challenge Day 1]

Cao Yajuan, Director of Operation and Maintenance of Xiangdao Travel, shared how the company uses cloud computing to achieve innovation and development. As a mobile travel brand of SAIC Group, Xiangdaochou, with the help of Alibaba Cloud, completed the core business relocation in only five days, becoming the first large-scale travel platform to use Alibaba Cloud PolarDB. Through in-depth cooperation, the two sides integrate in mobile payment and other fields to build a smart travel experience of the whole scene. Enterprises realize that releasing cloud potential needs to go beyond traditional IT models, improve efficiency and reduce costs through prediction algorithms and serverless architecture optimization. In the future, Xiangdao Travel and Alibaba Cloud will continue to cooperate, leading the intelligent development of the mobile travel industry.

Cao Yajuan, Director of Operation and Maintenance of Xiangdao Travel, shared how the company uses cloud computing to achieve innovation and development. As a mobile travel brand of SAIC Group, Xiangdaochou, with the help of Alibaba Cloud, completed the core business relocation in only five days, becoming the first large-scale travel platform to use Alibaba Cloud PolarDB. Through in-depth cooperation, the two sides integrate in mobile payment and other fields to build a smart travel experience of the whole scene. Enterprises realize that releasing cloud potential needs to go beyond traditional IT models, improve efficiency and reduce costs through prediction algorithms and serverless architecture optimization. In the future, Xiangdao Travel and Alibaba Cloud will continue to cooperate, leading the intelligent development of the mobile travel industry.

List of winners in May

Internal deployment is the traditional way for companies to build and operate their own servers, while cloud computing uses cloud provider equipment through the network. Both have advantages and disadvantages, and are suitable for systems with different scales and requirements. The hybrid cloud combines the two. Sensitive data is processed internally, and other services use the cloud to ensure security through VPN. Hybrid cloud reduces the cost and increases the customization flexibility of the system.

Recently, Alibaba Cloud, the world's leading cloud computing manufacturer, announced the official launch of the commercial release of the latest HPC optimization instance hpc8ae. This instance relies on Alibaba Cloud's self-developed "Apsara+CIPU" architecture, and is equipped with the fourth generation AMD EPYC processor. It is optimized for high-performance computing applications, especially for simulation applications such as computational fluid, finite element analysis, and multi physical field simulation, The price performance ratio in the CAE scenario should be improved by at least 50%.

This paper introduces the log replication technology in distributed systems, which is an important means to ensure high availability and data consistency. Taking the Raft algorithm as an example, the article explains how the leader copies the client request to the follower's log: the leader first records the request, then sends it to the follower through RPC, waits for ACK confirmation, and retries if necessary. When most followers confirm, the leader submits the log and notifies the followers. The paper also mentioned challenges such as network partition and log consistency, as well as coping strategies, such as timeout mechanism, leader election, log matching and compression. Finally, it emphasizes the role of log replication in ensuring system consistency and availability in the face of failures.

In Hong Kong, there are some well-known game server rental companies, such as Dataplugs, iAdvantage and SunnyVision. These companies all provide high-performance servers and high-quality customer service. However, you need to choose the most suitable server provider according to your specific needs and budget.

These are the main advantages of Hong Kong servers. However, when selecting servers, you need to consider their business needs and budget comprehensively.

Alibaba Cloud's resource orchestration service ROS provides Terraform hosting capability. Users can directly deploy Terraform scripts on the ROS console. This article will detail how to use ROS's Terraform hosting service to deploy classic 2048 mini games to the cloud in one click, so that players around the world can experience online.

This paper introduces the important mechanism of * * heartbeat detection * * in the distributed system, which is used to monitor the health status of system nodes and smooth communication. Heartbeat detection sends signals on a regular basis. If the node does not respond within the predetermined period, it is considered as possible failure. The processing mechanism includes retry, alarm and automatic repair. The article also mentioned two strategies: * * cycle detection * * and * * cumulative failure detection * *, and gave Java code examples to show the implementation of heartbeat detection. In addition, the applications of heartbeat detection in distributed database, microservice, Internet of Things and other scenarios are listed, as well as optimization strategies such as dynamically adjusting heartbeat rate and optimizing timeout mechanism. Finally, the key role of heartbeat detection in system stability and high availability is emphasized.

An article to understand the hidden source IP!

In this tutorial, we will guide you how to use Alibaba Cloud ECS to build an enterprise website. Steps include: 1) Register an AliCloud account and purchase an ECS instance, and select an appropriate configuration; 2) Configure security groups and open necessary ports; 3) Connect ECS through SSH, update the system and install Nginx; 4) Upload website files and configure Nginx server; 5) Bind domain name and configure HTTPS certificate. Following these steps, your enterprise website will run securely on Alibaba Cloud ECS.

This article is shared by developer Xiaomi to discuss the consistency in distributed systems, especially the consistency between databases and Redis. This article introduces the advantages of the full cache strategy, such as efficient reading and stability, but also points out its consistency challenges. In order to solve this problem, a method of data synchronization through Binlog of subscription database is proposed, the working principle and steps are explained in detail, and the advantages and disadvantages are analyzed. In addition, the asynchronous calibration scheme is mentioned as a supplement to further ensure data consistency. Finally, we remind you to pay attention to logging, gradual optimization and monitoring alarms in the actual online environment.

Server storage data recovery environment: A brand of EVA8400 has a VMware ESXi virtualization platform installed on the server. The virtual disks of the virtual machine include data disks (thin mode)+snapshot data disks. Some virtual machines run oracle databases and mysql databases. Server storage failure&detection: A virtual machine in the storage cannot be started after the storage is powered off and restarted abnormally. The staff speculated that the failure was caused by an abnormal power failure, which led to the failure of the power module. After clearing the cache and restarting the storage, it was found that the virtual machine still could not start normally.

RAID (disk array) is a technology that integrates multiple physical hard disks into a virtual storage. The raid module is equivalent to an intermediate layer of storage management. The upper layer receives and executes data read and write instructions from the operating system and file system, and the lower layer manages the storage, read and write of data on each physical hard disk. Compared with a separate physical hard disk, raid can provide users with larger independent storage space, faster read and write speed, higher data storage security and more convenient unified management mode. Whether the disk array can operate normally is the key to ensure the normal reading and writing of data in the server.

The Apsara Technology Salon jointly held by Alibaba Cloud, Pingtou Brother and Anmou Technology discussed the application of the Sky Reliant Arm architecture in business innovation. During the activity, the operation and maintenance experts of Qianxun shared the successful case of migrating core business to the ECS instance of the Reliance processor, emphasizing the energy efficiency ratio and cost reduction and efficiency enhancement advantages of the Reliance processor. The migration process involves the adaptation of the operating system, CICD system and monitoring system, as well as the performance test of the business system. At present, Chihiro has migrated thousands of ECS instances to Reliance processors, achieving significant cost and efficiency improvements. In the future, it is planned to continue to expand the application of the Reliance processor in the core business and K8S.

Raft algorithm is an algorithm for consistency management of replication logs in distributed systems. It coordinates log replication by electing leaders to ensure data consistency of all nodes. The algorithm includes heartbeat mechanism, election process, log copy and consistency guarantee. When the leader fails, the node will be re elected to ensure high availability. Raft is easy to understand and implement, provides strong consistency, and is commonly used in distributed databases and coordination services. The author Xiaomi shared relevant knowledge and encouraged readers interested in distributed systems to further explore.