Release Notes

MindSpore 2.9.0 Release Notes

Major Features and Improvements

Runtime

• [STABLE] Enhanced Usability of Memory Binding and Core Binding: Support memory binding during process startup to stabilize the performance of heterogeneous copy operations. Users can enable this feature by configuring the --bind_numa parameter of msrun. Both --bind_numa and mindspore.runtime.set_cpu_affinity support unified JSON-format binding configuration input.

PyNative

• [STABLE] Enhancement of the DVM operator automatic fusion in dynamic graph asynchronous execution mode, supporting the backward fusion of Elemwise operators after MatMul operators. Users can enable it by setting the environment variable MS_DEV_PYNATIVE_FUSION_FLAGS.

• [STABLE] Added support for device of type meta, including the ability to create Tensors of type meta, and supported Tensors of type meta as operator inputs.

API Change

• [STABLE] mindspore.ops API has added two DeepSeek Sparse Attention (DSA) interfaces:

  mindspore.ops
  mindspore.ops.sparse_flash_attention
  mindspore.ops.lightning_indexer

• [STABLE] The first argument input of mindspore.mint.eq, mindspore.ops.equal, mindspore.ops.Equal, mindspore.mint.less, mindspore.mint.lt, mindspore.ops.less and mindspore.ops.Less no longer support Scalar type.

• [STABLE] On the CPU backend, mindspore.ops.trunc now supports uint16 data as input, mindspore.ops.floor_div, mindspore.ops.floor_divide, and mindspore.ops.remainder now support bool data as input.

• [STABLE] The argument output_recompute of mindspore.nn.Cell.recompute and mindspore.recompute can be used in static graphs.

• [BETA] mindspore.nn.Cell adds the register_parameter_forward_hook method, enabling users to register forward hooks for Parameters.

• [STABLE] mindspore.mint.optim.FusedAdamW, a fused optimizer, is added in mindspore.mint.optim. It is an implementation of the Fused Adaptive Moment Estimation Weight Decay (​FusedAdamW​) algorithm.

• [STABLE] mindspore.load_checkpoint added support for BytesIO objects in safetensors format to the checkpoint loading interface.

Dependencies Change

• oneDNN dependency pinned to 3.10.1

• PyYAML dependency changed to >=6.0

• Eigen dependency pinned to 5.0.0

• glog(Google Logging Library) dependency pinned to 0.7.1

• JSON for Modern C++ dependency pinned to 3.12.0

• CUB removed

• jemalloc removed

Contributors

baochong1,bellatan,BigSkySea,bleub,caifubi,celiaccui,chaijinwei,changzherui1,chenshan2623,chujinjin,chuting,dingjinshan,downsivan,fangwenyi1,fary86,fengyixing,fortunegit,ginfung,haloradar,haozhang,hbhu_bin,horcham_zhq,huan-xiaoling,hulongjie,hwcaifubi,hwjiaorui,hz893,jiangna,jiaorui,jonyguo,lanshaozuishuai,Liangcan-Li,liangchenghui,LiangZhibo,lichen666,lijiajie1234,limingqi107,LinHaier,LiNuohang,liuchengji3,looop5,luochao60,machangwei ,maoyuanpeng1,Margaret_wangrui,nicholas_yhr,panzhihui1,probiotics_53,propathee,Qiao_Fu,rainyhorse,shen_haochen,shenwei41,shuqian0,silkage_jiajia,SorryNaCN,sunshineko,wangnan39,wang-ziqi-code,wjlflyer,wujueying,wusuqin4,XianglongZeng,xuzhen,yangjiane,yangting,yanluojia2025,ynagxiaochun2025,yt_289,yuanqi1104,zh_qh,zhanglei,zhanglei546,zhangyifan999,zhangyinxia,zhaochenjie-huawei,zzhongmin,刘飞扬