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我国科研人员研发亚10毫秒级神经动力系统存内计算芯片
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我国科研人员研发亚10毫秒级神经动力系统存内计算芯片
发布时间：2026-08-05 11:20:04
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我国科研人员研发亚10毫秒级神经动力系统存内计算芯片
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<article><section data-type="rtext"><p>【环球网科技综合报道】8月5日消息，据《科学》（Science）报道称，近日，中国科学院上海微系统与信息技术研究所等科研团队，利用相变存储器精确可控的电导漂移及其多级存内计算能力，研发了亚10毫秒级的神经动力系统存内计算芯片。</p><p><i class="pic-con"></p><p>资料显示，高保真物理世界几何建模要求在流形表面实现实时、密集且可微的变形场。基于自适应步长积分与嵌入式神经网络相结合的神经动力系统（NDS）可支撑这一任务，但面临数百毫秒延迟的问题。</p> <adv-loader __attr__inner="7004636" __attr__style="width: auto;position: relative;float: left;border: 1px solid #ebebeb; padding: 20px;overflow: hidden;margin: 10px 30px 40px 0;"></adv-loader> <p>相变存储器具有高速、低功耗、与互补金属氧化物半导体（CMOS）工艺兼容和多阻态存储等特性，是极具发展潜力的新型存储技术。相变存储器精确可控的多阻态存储、电导漂移两大特性，可作为NDS的一种功能性计算特征，在保障高精度的前提下，实现高密度存储和高并行度计算，提升高保真几何建模效率。</p><p>据悉，上述芯片通过SET-RESET-DRIFT映射构建贪婪算法搜索功能，规避传统数字电路频繁读写、数据缓冲与乘法操作带来的延迟、面积与功耗开销等问题。芯片***用40nm 1T1R相变单元实现存内计算，相变单元刀片型小电极厚度达到3nm，相变器件良率99.99999%以上，相变器件电导可16级以上高精度调控。</p><p>性能测试表明，在10-7误差容限下，相较于传统先进的NDS专用加速硬件，该芯片单次迭代计算延迟低至2.12毫秒，计算速度提升3.82倍至36.27倍，功耗降低11.75倍至24.73倍。在大脑皮层表面同步重建、三维流形网格生成应用上，相较于业界最先进的图形处理器A100，该芯片的NDS系统综合性能高出50.38倍至478.18倍。（青云）</p></section><img src='/image/160179-0' 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