汉武大帝
三星全球首创LPDDRPIM内存:手机AI性能暴涨2.3倍_我的网站

一 |

Typhoon Dolphin made landfall in Taizhou, East China's Zhejiang Province, on Sunday afternoon, bringing strong winds up to 42 meters per second and heavy torrential rain to the coastal regions amid a red alert - the highest level in the country's typhoon warning system - issued for it earlier that day.
Authorities in East China's Fujian have relocated nearly 100,000 residents, while coastal provinces are suspending railway services and canceled flights, making an all-out effort to mitigate possible risks.
The NMC maintained orange rainstorm and blue severe convective weather alerts at 6 am on Sunday, forecasting exceptionally heavy rainfall of 250 to 440 millimeters in some areas along the eastern coast of Zhejiang, with heavy to torrential rains expected across Jiangsu, Zhejiang, Shanghai, and Anhui between Sunday morning and Monday morning, China Central Television (CCTV) reported.
In response to the typhoon, China's meteorological authority on Sunday upgraded its emergency response for severe meteorological disasters from Level III to Level II.
Fujian raised the emergency response level for typhoon prevention to Level II at 9 am on Sunday.
As Typhoon Dolphin gathers strength and approaches the coastal areas, Fujian's flood control authority, as of 6 pm on Saturday, deployed a total of 17,800 officials to and relocated 98,900 people from high-risk areas, Xinhua News Agency reported on Saturday.
Fujian has suspended all 115 marine engineering projects and moved 290 construction vessels to safe waters, while 55 passenger ferry routes in affected waters have been halted, chinanews.com reported.
Meanwhile, railway services in the affected regions including Fujian, Zhejiang, Shanghai have also been suspended from Sunday to Monday, according to chinanews.com.
Fujian authorities have urged stronger safety measures for returning vessels, offshore platforms and coastal and island tourism, as well as reinforcement of aquaculture facilities. They also called for timely evacuations from flood- and landslide-prone areas to guard against secondary disasters from the typhoon and heavy rain, chinanews.com reported.
In Zhejiang, Wenzhou city has closed all 85 A-level national tourist attractions, turned away more than 7,400 visitors and evacuated over 1,600, with the relocation effort ongoing, according to CCTV. Next, Wenzhou will next implement a "five suspensions" policy, halting outdoor group activities, classes, work, business operations and transportation.
All fishing vessels at Shitang Fishing Port in Wenling, Zhejiang, have returned to port, with all personnel evacuated ashore and maritime rescue teams on standby. Authorities urged vessels to stay off the sea during the typhoon.
In Shanghai, Pudong and Hongqiao airports operated at reduced capacity on Sunday, with nearly 60 percent of flights canceled. A total of 1,384 flights are scheduled to be canceled including 871 at Pudong and 513 at Hongqiao. Passengers are advised to check with their airlines for the latest updates and adjust travel plans accordingly, according to CCTV.
According to Hu Xiao, meteorological analyst at the NMC, the typhoon has several notable features, including its strong intensity and expansive circulation. The typhoon also has several unusual features. Forming unusually far east, near 180°E, it has traveled more than 7,200 kilometers, making its potential landfall in China a rare event and possibly the easternmost such landfall since 1951. Its 12-day lifespan is also well above the typical seven-to-10-day average, CCTV reported.
According to Ma Jun, director of the Institute of Public and Environmental Affairs, Typhoon Dolphin traveled a long distance and remained at typhoon or severe typhoon strength of its lifespan so far. Despite passing through some areas that were unfavorable to its development, its powerful inner core remained intact, while its extensive cloud system continued to absorb moisture and energy, fueling the potential for torrential rainfall.
The typhoon has remained at sea for more than 260 hours and experienced a rare "three rises and three falls" in intensity. Its unusually long lifespan has allowed it to absorb more moisture and energy, while repeated intensity fluctuations have complicated forecasts of its future track and intensity of wind and rainfall, according to CCTV.
After landfall, Typhoon Dolphin may move slowly, prolonging heavy rainfall and raising the risk of extreme precipitation and related disasters. Its track later in the week remains uncertain as it could interact with the southwest monsoon and cold air from the northwest, potentially broadening and intensifying its impacts, Ma told the Global Times on Sunday.
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二 | 8月26日消息,三星宣布,全球首次研发出面向移动端及端侧AI设备的下一代内存——LPDDR-PIM,该技术将运算功能集成于移动内存中,可有效提升AI处理速度并降低功耗。
在美国斯坦福大学举行的半导体学术会议Hot Chips 2026上,三星相关负责人首度公开展示了LPDDR5X-PIM的结构、规格及验证结果——该产品本月初刚在FMS 2026内存会议上斩获下一代内存奖项,但详细参数直到此次会议才正式披露。 PIM(内存内运算)技术通过在内存中嵌入运算单元,使部分计算可直接在内存内部完成,无需像传统架构那样将数据频繁搬运至CPU或GPU再传回内存。 对于AI运行而言,数据搬运是主要性能瓶颈之一,应用PIM后,简单运算就近处理,从而在提升速度的同时显著降低功耗。

三 |
在测试环节,三星以参数规模达80亿的Meta开源AI模型Llama 3.1为基准,结果显示LPDDR5X-PIM的处理时间为5.4秒,较普通LPDDR5X的12.3秒快了约2.3倍;每秒令牌处理量达81.3 TPS,为现有产品27 TPS的三倍。 事实上,三星早在2021年便公布了面向高带宽内存的HBM-PIM技术并完成开发验证。此次将PIM落地于智能手机等移动设备广泛采用的LPDDR低功耗内存,正是顺应大语言模型向小型化、高效化演进的新趋势。 相关负责人指出,虽然HBM是目前AI内存的标准方案,但并非所有场景都非它不可,LPDDR-PIM兼具高带宽与低功耗,为端侧AI开辟了新的可能。
随着生成式AI直接在智能手机、PC等终端设备上运行的端侧AI趋势不断扩展,LPDDR-PIM的应用前景持续看涨——电力与空间受限的移动设备,亟需在提升AI算力的同时严控功耗。 在兼容性方面,该产品沿用与通用LPDDR相同的阵列设计,无需大幅改动系统即可部署。目前,三星正提供软件开发工具包和模拟器等资源,积极推动生态建设。 继LPDDR5X-PIM之后,三星已启动LPDDR6-PIM的标准化工作,AI内存竞争正从以HBM为中心的数据中心,延伸至智能手机和PC等端侧领域,内存也正从单纯的数据存储设备,向直接参与运算的关键组件演进。
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