{"id":10006296,"date":"2022-08-23T22:09:00","date_gmt":"2022-08-23T14:09:00","guid":{"rendered":"https:\/\/ityet.com\/?p=10006296"},"modified":"2022-08-23T22:09:00","modified_gmt":"2022-08-23T14:09:00","slug":"%e5%8a%a8%e6%80%81%e5%b0%ba%e5%af%b8%e6%a8%a1%e5%9e%8b%e4%bc%98%e5%8c%96%e5%ae%9e%e8%b7%b5%e4%b9%8bshape-constraint-ir-part-i","status":"publish","type":"post","link":"https:\/\/itmax.cn\/?p=10006296","title":{"rendered":"\u52a8\u6001\u5c3a\u5bf8\u6a21\u578b\u4f18\u5316\u5b9e\u8df5\u4e4bShape Constraint IR Part I"},"content":{"rendered":"<p>\u7b80\u4ecb\uff1a\u00a0\u5728\u672c\u7cfb\u5217\u5206\u4eab\u4e2d\u6211\u4eec\u5c06\u4ecb\u7ecdBladeDISC\u5728\u52a8\u6001shape\u8bed\u4e49\u4e0b\u505a\u6027\u80fd\u4f18\u5316\u7684\u4e00\u4e9b\u5b9e\u8df5\u548c\u601d\u8003\u3002\u672c\u6b21\u5206\u4eab\u7684\u662f\u6211\u4eec\u6700\u8fd1\u5f00\u5c55\u7684\u6709\u5173shape constraint IR\u7684\u5de5\u4f5c\uff0cPart I \u4e2d\u6211\u4eec\u5c06\u4ecb\u7ecd\u95ee\u9898\u7684\u80cc\u666f\uff0c\u9762\u4e34\u7684\u4e3b\u8981\u6311\u6218\u548c\u4ee5\u53ca\u6211\u4eec\u505ashape constraint IR\u7684\u52a8\u673a\u3002\u5728\u672c\u7cfb\u5217\u5206\u4eab\u4e2d\u6211\u4eec\u5c06\u4ecb\u7ecdBladeDISC\u5728\u52a8\u6001shape\u8bed\u4e49\u4e0b\u505a\u6027\u80fd\u4f18\u5316\u7684\u4e00\u4e9b\u5b9e\u8df5\u548c\u601d\u8003\u3002\u672c\u6b21\u5206\u4eab\u7684\u662f\u6211\u4eec\u6700\u8fd1\u5f00\u5c55\u7684\u6709\u5173shape constraint IR\u7684\u5de5\u4f5c\uff0c\u9274\u4e8e\u7bc7\u5e45\u8f83\u957f\uff0c\u4e3a\u4e86\u63d0\u5347\u9605\u8bfb\u4f53\u9a8c\uff0c\u6211\u4eec\u5c06\u5206\u4eab\u62c6\u5206\u4e3a\u4e24\u4e2a\u90e8\u5206\uff1aPart I \u4e2d\u6211\u4eec\u5c06\u4ecb\u7ecd\u95ee\u9898\u7684\u80cc\u666f\uff0c\u9762\u4e34\u7684\u4e3b\u8981\u6311\u6218\u548c\u4ee5\u53ca\u6211\u4eec\u505ashape constraint IR\u7684\u52a8\u673a\uff1bPart II \u4e2d\u6211\u4eec\u5c06\u4ecb\u7ecdshape constraint IR\u7684\u8bbe\u8ba1\uff0c\u5b9e\u73b0\u4ee5\u53ca\u4e00\u4e9b\u521d\u6b65\u7684\u5b9e\u9a8c\u7ed3\u679c\uff1b\u672c\u7bc7\u662f\u5173\u4e8ePart I\u7684\u4ecb\u7ecd\uff0cPart II\u7684\u4ecb\u7ecd\u5c06\u540e\u7eed\u53d1\u51fa\u3002\u00a0\u80cc\u666f\u548c\u6311\u6218\u4e3b\u6d41\u7684AI\u6a21\u578b\u5728\u90e8\u7f72\u65f6\u4e00\u822c\u90fd\u5177\u5907\u4e0d\u540c\u7a0b\u5ea6\u7684\u52a8\u6001shape\u95ee\u9898\uff0c\u6bd4\u5982\u8f93\u5165\u56fe\u7247\u5c3a\u5bf8\uff0cbatch size \u6216\u8005\u5e8f\u5217\u957f\u5ea6\u7684\u53d8\u5316\u7b49\u3002\u4e0e\u9759\u6001shape\u8bed\u4e49\u4e0b\u505a\u4f18\u5316\u76f8\u6bd4\uff0c\u5728\u52a8\u6001shape\u8bed\u4e49\u4e0b\u505a\u4f18\u5316\u7531\u4e8e\u7f3a\u5c11\u5177\u4f53\u7684shape\u4fe1\u606f\u5f80\u5f80\u5177\u6709\u66f4\u5927\u7684\u96be\u5ea6\uff0c\u4e3b\u8981\u4f53\u73b0\u5728\u4ee5\u4e0b\u51e0\u4e2a\u65b9\u9762\uff1a\u00a0\u6311\u62181\uff1a\u4f18\u5316\u76ee\u6807\u7684\u8f6c\u53d8\u3002\u5728\u9759\u6001shape\u4e0b\uff0c\u6211\u4eec\u7684\u4f18\u5316\u76ee\u6807\u662f\u5e0c\u671b\u5728\u7ed9\u5b9a\u7684shape\u4e0b\uff0c\u5c3d\u53ef\u80fd\u903c\u8fd1\u7406\u8bba\u4e0a\u9650\u7684\u901f\u5ea6\uff0c\u9488\u5bf9\u4e0d\u540c\u7684shape\u53ef\u4ee5\u4f7f\u7528\u4e0d\u540c\u7684\u4f18\u5316\u624b\u6bb5\uff0c\u800c\u5728\u52a8\u6001shape\u8bed\u4e49\u4e0b\uff0c\u6211\u4eec\u4f18\u5316\u76ee\u6807\u662f\u5e0c\u671b\u4f7f\u7528\u4e00\u5957\u65b9\u6cd5\u63d0\u5347\u5728\u6574\u4e2ashape\u5206\u5e03\u4e0a\u7684\u5e73\u5747\u6027\u80fd\uff0c\u66f4\u5f3a\u8c03\u7684\u662f\u4f18\u5316\u65b9\u6cd5\u7684\u8de8shape\u53ef\u8fc1\u79fb\u6027\u548c\u7a33\u5b9a\u6027\u3002\u56e0\u6b64\u5f88\u591a\u5728\u9759\u6001shape\u4e0b\u5e38\u7528\u7684\u4f18\u5316\uff0c\u6bd4\u5982profling\u9a71\u52a8\u7684\u7b56\u7565\uff0c\u5c06\u4e0d\u518d\u7b80\u5355\u53ef\u7528\u3002\u00a0\u6311\u62182\uff1a\u66f4\u5c11\u7684\u6709\u6548\u4fe1\u606f\u3002\u4f18\u5316AI\u6a21\u578b\u65f6\u5f88\u591a\u5e38\u89c1\u7684\u624b\u6bb5\u90fd\u628a\u4e00\u4e9bshape\u5173\u7cfb\u7684\u65ad\u8a00\u662f\u5426\u6210\u7acb\u4f5c\u4e3a\u4f18\u5316\u89e6\u53d1\u7684\u524d\u7f6e\u6761\u4ef6\u3002\u6bd4\u5982\u5728\u8ba1\u7b97\u56fe\u5316\u7b80\u65f6\u6d88\u9664\u5197\u4f59\u7684broadcast op\uff0c\u9700\u8981\u4f9d\u8d56\u4e8e\u5224\u65ad\u8f93\u5165\u548c\u8f93\u51fa\u662f\u5426\u5177\u6709\u76f8\u540c\u7684shape\u3002\u5728\u9759\u6001shape\u8bed\u4e49\u4e0b\uff0c\u5224\u65ad\u5e38\u91cfshape\u662f\u5426\u76f8\u7b49\u662f\u663e\u7136\u7684\uff0c\u800c\u52a8\u6001shape\u8bed\u4e49\u4e0b\uff0c\u5224\u65adsymbolic shape\u76f8\u7b49\u5219\u56f0\u96be\u7684\u591a\uff0c\u800c\u4e00\u65e6\u6211\u4eec\u65e0\u6cd5\u6709\u6548\u5224\u65ad\u8fd9\u4e9b\u524d\u7f6e\u7684shape\u5173\u7cfb\u65ad\u8a00\u662f\u5426\u6210\u7acb\uff0c\u540e\u7eed\u4f18\u5316\u90fd\u65e0\u6cd5\u8fdb\u884c\uff0c\u56e0\u800c\u4e22\u5931\u5f88\u591a\u4f18\u5316\u673a\u4f1a\uff0c\u62c9\u5927\u4e0e\u9759\u6001shape\u60c5\u51b5\u4e0b\u6027\u80fd\u7684\u5dee\u5f02\u3002\u00a0\u6311\u62183\uff1a\u66f4\u590d\u6742\u7684\u8ba1\u7b97\u56fe\u3002\u5728\u52a8\u6001shape\u8bed\u4e49\u4e0b\uff0c\u7531\u4e8eshape\u4e0d\u518d\u662f\u7f16\u8bd1\uff08\u6216\u8005\u4f18\u5316\uff09\u671f\u95f4\u7684\u5e38\u91cf\uff0c\u6574\u4e2a\u8ba1\u7b97\u56fe\u4e2d\u6df7\u6742\u7740\u8ba1\u7b97shape\u7684IR\u4ee5\u53ca\u8ba1\u7b97data\u7684IR\uff0c\u4f7f\u5f97\u6574\u4e2a\u8ba1\u7b97\u56fe\u7684\u5206\u6790\u548c\u4f18\u5316\u90fd\u53d8\u5f97\u66f4\u590d\u6742\uff0c\u540c\u65f6\u4e5f\u4f1a\u5f15\u5165\u66f4\u591ashape\u76f8\u5173\u8ba1\u7b97\u7684\u5f00\u9500\u3002\u00a0\u4e0b\u56fe\u4e2d\u5c55\u793a\u4e86\u4e00\u4e2a\u652f\u6301numpy\u8bed\u4e49implicit broadcast\u00a0(IB)\u7684Add OP\u7684\u4f8b\u5b50\u4ee5\u8bf4\u660e\u8ba1\u7b97\u56fe\u53d8\u590d\u6742\u7684\u5177\u4f53\u8fc7\u7a0b\u3002\u5728IB\u8bed\u4e49\u4e0b\uff0cAdd OP\u5728\u8fd0\u884c\u65f6\u4f1a\u6839\u636e\u8f93\u5165shape\u4e4b\u95f4\u7684\u5173\u7cfb\uff0c\u9690\u5f0f\u7684\u63d2\u5165broadcast\u8fd0\u7b97\uff0c\u6240\u4ee5\u4e0b\u56fe\u5de6\u4fa7\u4e2d\u5c55\u793a\u7684\u4e09\u79cd\u53ef\u80fd\u8f93\u5165\u90fd\u662f\u5408\u6cd5\u7684\u3002\u5728\u9759\u6001shape\u8bed\u4e49\u4e0b\u6211\u4eec\u5f88\u5bb9\u6613\u5728\u7f16\u8bd1\u671f\u5c31\u533a\u5206\u5f00\u5b9e\u9645\u662f\u90a3\u79cd\u60c5\u51b5\uff0c\u6545\u800c\u5728\u7f16\u8bd1\u65f6\u53ea\u9700\u8981\u5bf9\u4e00\u79cd\u5177\u4f53\u60c5\u51b5\u8fdb\u884c\u5904\u7406\uff0c\u800c\u5728\u52a8\u6001shape\u8bed\u4e49\u4e0b\uff0c\u7531\u4e8e\u7f16\u8bd1\u671f\u95f4\u65e0\u6cd5\u8fdb\u884c\u533a\u5206\uff0c\u6211\u4eec\u9700\u8981\u786e\u4fdd\u7f16\u8bd1\u7684\u7ed3\u679c\u5728\u4e09\u79cd\u60c5\u51b5\u4e0b\u90fd\u53ef\u4ee5\u5de5\u4f5c\uff0c\u56e0\u800c\u4f1a\u5728\u8ba1\u7b97\u56fe\u4e2d\u5f15\u5165\u663e\u793a\u7684shape \u8ba1\u7b97\u7684IR\u4ee5\u53cabroadcast\u64cd\u4f5c\uff08\u5982\u4e0b\u56fe\u53f3\u4fa7\u6240\u793a\uff09\u3002\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\u4e0a\u5c42\u6846\u67b6\u4e2d\u4e00\u4e2a\u666e\u901a\u7684Add OP\u5728\u52a8\u6001shape\u8bed\u4e49\u4e0b\uff0c\u4e5f\u4f1a\u88ab\u5c55\u5f00\u6210\u4e00\u4e2a\u590d\u6742\u7684\u5b50\u56fe\u3002<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042364749\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>\u4e5f\u6b63\u56e0\u4e3a\u4e0a\u8ff0\u7684\u8fd9\u4e9b\u6311\u6218\uff0c\u76ee\u524d\u6210\u719f\u7684\u4f18\u5316\u5de5\u5177\uff08\u5982TensorRT\uff0cXLA\/TVM\uff09\u5bf9\u4e8e\u52a8\u6001shape\u652f\u6301\u90fd\u8fd8\u6bd4\u8f83\u6709\u9650\u3002BladeDISC\u662f\u963f\u91cc\u4e91\u8ba1\u7b97\u5e73\u53f0PAI\u56e2\u961f\u81ea\u7814\u7684\u4e00\u6b3e\u539f\u751f\u652f\u6301\u52a8\u6001shape\u7684AI\u7f16\u8bd1\u5668\u3002\u5728\u8fc7\u5f80\u4e00\u6bb5\u65f6\u95f4\u6211\u4eec\u5f00\u53d1BladeDISC\u4f18\u5316\u52a8\u6001shape\u6a21\u578b\u7684\u8fc7\u7a0b\u4e2d\uff0c\u6211\u4eec\u53d1\u73b0\u5c3d\u7ba1\u4e0d\u77e5\u9053shape\u7684\u5177\u4f53\u7684\u6570\u503c\uff0c\u4f46\u662f\u901a\u8fc7\u5145\u5206\u53d1\u6398\u548c\u5229\u7528Tensor\u7684shape\u4e4b\u95f4\u7684\u7ed3\u6784\u5316\u5173\u7cfb\u6216\u8005Tensor shape\u81ea\u8eab\u7684\u5206\u5e03\u7279\u70b9\uff0c\u53ef\u4ee5\u6709\u6548\u7684\u89e3\u51b3\u4e0a\u8ff0\u6311\u6218\u3002\u5728\u8fd9\u91cc\u6211\u4eec\u628aTensor\u7684shape\u4e4b\u95f4\u7684\u7ed3\u6784\u5316\u5173\u7cfb\u6216\u8005Tensor shape\u81ea\u8eab\u7684\u5206\u5e03\u7edf\u79f0\u4e3ashape constraint\u3002\u66f4\u8fdb\u4e00\u6b65\u7684\uff0c\u6211\u4eec\u53d1\u73b0\u901a\u8fc7\u5c06shape constraint\u4f5c\u4e3a\u7b2c\u4e00\u7b49\u516c\u6c11\u5f15\u5165\u5230IR\u4e2d\uff0c\u53ef\u4ee5\u6700\u5927\u5316\u7684\u53d1\u6325shape constraint\u7684\u6548\u80fd\u3002\u672c\u6587\u4e2d\u6211\u4eec\u5c06\u4ecb\u7ecdBladeDISC\u4e2dshape constraint IR\u7684\u5b9a\u4e49\u4ee5\u53ca\u5982\u4f55\u5229\u7528\u5b83\u6765\u8f85\u52a9\u5b8c\u6210\u4e00\u7cfb\u5217\u52a8\u6001shape\u8bed\u610f\u4e0b\u7684\u4f18\u5316\u4ee5\u89e3\u51b3\u4e0a\u8ff0\u6311\u6218\uff0c\u7f29\u5c0f\u4e0e\u9759\u6001shape\u4e4b\u95f4\u7684\u6027\u80fd\u5dee\u5f02\u3002\u00a0\u52a8\u673a\u4e3a\u4ec0\u4e48\u9009\u62e9shape constraint\uff1f\u5728\u4e0a\u4e00\u7ae0\u8282\u4e2d\u6211\u4eec\u5206\u6790\u4e86\u5728\u52a8\u6001shape\u8bed\u4e49\u4e0b\u7ed9\u505a\u4f18\u5316\u6240\u5e26\u6765\u7684\u4e00\u7cfb\u5217\u6311\u6218\u3002\u6211\u4eec\u53d1\u73b0\u4f7f\u7528shape constraint\u53ef\u4ee5\u6709\u6548\u7684\u89e3\u51b3\u8fd9\u4e9b\u4f18\u5316\u4e0a\u9762\u4e34\u7684\u56f0\u96be\u3002\u4ee5\u4e0b\u6211\u4eec\u5c06\u5206\u522b\u4ecb\u7ecd\u4f7f\u7528shape constraint\u5982\u4f55\u6709\u6548\u89e3\u51b3\u4e0a\u8ff0\u7684\u4e09\u4e2a\u6311\u6218\u3002\u00a0\u5e94\u5bf9\u6311\u62181\uff1a\u8de8shape\u53ef\u8fc1\u79fb\u6027\u5728\u5177\u4f53\u5206\u6790\u4e4b\u524d\uff0c\u6211\u4eec\u5148\u770bshape constraint\u5728\u672c\u6587\u4e2d\u7684\u5b9a\u4e49\u3002\u5047\u8bbe\u4e00\u4e2atensor\u7684rank\u662fN\uff0c\u5219\u8be5tensor\u7684shape\u53ef\u4ee5\u8bb0\u4e3a(d0, d1, &#8230; dN-1)\uff0c\u5176\u4e2ddi\u8868\u793a\u7684\u662f\u8be5tensor\u5728\u7b2ci\u4e2a\u8f74\u4e0a\u6240\u5177\u6709\u7684\u5927\u5c0f\uff0c\u4e5f\u8bb0\u4e3a\u7b2ci\u4e2a\u8f74\u7684dimension size\u3002\u6587\u672c\u4e2d\u8ba8\u8bba\u7684shape constraint\u53ef\u4ee5\u5206\u4e3a\u4ee5\u4e0b\u4e24\u7c7b\uff1ashape\u7ed3\u6784\u5316\u7ea6\u675f\u3002\u8be5\u7c7b\u7ea6\u675f\u63cf\u8ff0\u7684\u662fdimension size\u4e4b\u95f4\u7684\u76f8\u5173\u5173\u7cfb\uff0c\u6bd4\u5982\uff1adimension size\u76f8\u7b49\u5173\u7cfb\uff1a\u67d0\u4e00\u4e2atensor\u7684di\u4e0e\u53e6\u5916\u4e00\u4e2atensor\u7684dj\u5177\u6709\u76f8\u540c\u7684\u5927\u5c0f\uff0c\u6216\u8005\u540c\u4e00\u4e2atensor\u7684di\u4e0edj\u5177\u6709\u76f8\u540c\u7684\u5927\u5c0f\uff1btensor\u5143\u7d20\u4e2a\u6570\u76f8\u7b49\uff1a\u5373\u4e00\u4e2atensor\u548c\u53e6\u5916\u4e00\u4e2atensor\u5177\u6709\u76f8\u540c\u6570\u91cf\u7684\u5143\u7d20\uff1bdimension size\u4e58\u79ef\u76f8\u7b49\u5173\u7cfb\uff1a\u6bd4\u5982reshape\uff08[a, b, c, d]\uff09 -&gt; [a<em>b, c<\/em>d]shape\u5206\u5e03\u7ea6\u675f\u3002\u8be5\u7c7b\u7ea6\u675f\u63cf\u8ff0\u7684\u662f\u67d0\u4e2a\u6216\u67d0\u51e0\u4e2adimension size\u7684\uff08\u8054\u5408\uff09\u5206\u5e03\uff0c\u6bd4\u5982\uff1adi % 4 = 0\uff0cdi != 0, \u00a0di * dj=10;likely values: \u5373\u63cf\u8ff0\u67d0\u4e2adimension size\u66f4\u5927\u6982\u7387\u53ef\u80fd\u53d6\u5230\u7684\u503c\uff1bvalue range\uff1a\u5373\u63cf\u8ff0\u67d0\u4e2adimension size\u53ef\u80fd\u7684\u53d6\u503c\u533a\u95f4\uff1b\u7531\u4e0a\u8ff0\u5b9a\u4e49\u672c\u8eab\u6211\u4eec\u53ef\u4ee5\u7acb\u523b\u5f97\u5230\u4e00\u4e2a\u7ed3\u8bba\uff1a\u7531\u4e8e\u65e0\u8bba\u662fshape\u7ed3\u6784\u5316\u7ea6\u675f\u8fd8\u662f\u5206\u5e03\u7ea6\u675f\u90fd\u4e0d\u4f9d\u8d56\u4e8e\u5177\u4f53\u7684shape\u503c\uff0c\u56e0\u6b64\u57fa\u4e8eshape constraint\u800c\u6784\u5efa\u7684\u4f18\u5316\u7b56\u7565\u5929\u7136\u5177\u5907\u8de8shape\u53ef\u8fc1\u79fb\u6027\u3002\u00a0\u5e94\u5bf9\u6311\u62182\uff1ashape\u5173\u7cfb\u65ad\u8a00\u5206\u6790\u5f88\u591a\u91cd\u8981\u7684\u4f18\u5316\u90fd\u5c06\u4e00\u4e9bshape\u5173\u7cfb\u7684\u65ad\u8a00\u662f\u5426\u6210\u7acb\u4f5c\u4e3a\u4f18\u5316\u89e6\u53d1\u7684\u524d\u7f6e\u6761\u4ef6\uff0c\u6bd4\u5982\uff1a\u8ba1\u7b97\u56fe\u5316\u7b80\u3002\u6bd4\u5982\u4e0a\u6587\u63d0\u5230\u7684\u6d88\u9664\u5197\u4f59\u7684broadcast\u8282\u70b9\u7684\u4f8b\u5b50\u3002\u8ba1\u7b97\u56felayout\u5168\u5c40\u4f18\u5316\u3002\u8ba1\u7b97\u5bc6\u96c6\u578b\u7b97\u5b50\u7684\u6027\u80fd\u548c\u5176\u8f93\u5165\u8f93\u51fa\u7684\u6570\u636e\u6392\u5e03\uff08layout\uff09\u6709\u5f88\u5f3a\u7684\u5173\u7cfb\uff0c\u4e00\u4e2a\u66f4\u5408\u9002\u7684layout\u5f80\u5f80\u5177\u6709\u66f4\u597d\u7684\u6027\u80fd\u3002\u800c\u4e00\u822c\u6700\u4f18\u7684layout\u662f\u968f\u7740shape\u800c\u53d8\u5316\u7684\uff0c\u5bfc\u81f4\u5728\u52a8\u6001shape\u8bed\u610f\u4e0b\u65e0\u6cd5\u9759\u6001\u786e\u5b9a\u6700\u4f18\u7684layout\uff1b\u8fd9\u91cc\u4e00\u79cd\u4f18\u5316\u7b56\u7565\u662f\uff1a\u5c06shape\u517c\u5bb9\u7684\u8ba1\u7b97\u5bc6\u96c6\u7b97\u5b50\u5206\u5230\u4e00\u7ec4\uff0c\u53ea\u9700\u8981\u5728\u7ec4\u95f4\u63d2\u5165layout\u8f6c\u5316\u7684\u7b97\u5b50\uff0c\u800c\u7ec4\u5185\u7531\u4e8e\u53ef\u4ee5\u786e\u8ba4\u4f7f\u7528\u540c\u4e00\u79cdlayout\u800c\u4e0d\u5fc5\u518d\u63d2\u5165layout\u8f6c\u5316\u7684\u7b97\u5b50\uff0c\u4ece\u800c\u63d0\u5347\u6027\u80fd\uff1b\u8fd9\u91ccshape\u517c\u5bb9\u7684\u65ad\u8a00\u662f\u4f18\u5316\u89e6\u53d1\u7684\u524d\u7f6e\u6761\u4ef6\u3002fusion\u51b3\u7b56\u3002\u5728\u505a\u7b97\u5b50\u878d\u5408\u65f6\u5e76\u4e0d\u662f\u8d8a\u591a\u8d8a\u597d\uff0c\u53ea\u6709\u5c06shape\u517c\u5bb9\u7684\u7b97\u5b50\u8fdb\u884c\u878d\u5408\u624d\u4f1a\u53d6\u5f97\u6bd4\u8f83\u597d\u7684\u6548\u679c\uff0c\u540c\u6837\u91ccshape\u517c\u5bb9\u7684\u65ad\u8a00\u7684\u5224\u5b9a\u662f\u505a\u7b97\u5b50\u878d\u5408\u7684\u524d\u7f6e\u6761\u4ef6\u3002\u5728\u52a8\u6001shape\u8bed\u4e49\u4e0b\uff0c\u7531\u4e8e\u4e0d\u77e5\u9053shape\u5177\u4f53\u7684\u503c\uff0csymbolic shape\u5173\u7cfb\u7684\u65ad\u8a00\u7684\u5206\u6790\u5f80\u5f80\u662f\u56f0\u96be\u7684\u3002symbolic shape\u5173\u7cfb\u7684\u65ad\u8a00\u53ef\u4ee5\u770b\u6210\u662fsymbolic dimension size\u95f4\u7684\u5173\u7cfb\u65ad\u8a00\u7684\u903b\u8f91\u5173\u7cfb\u8868\u8fbe\u5f0f\uff0c\u56e0\u800c\u95ee\u9898\u53ef\u4ee5\u8f6c\u6362\u6210\u5bf9\u4e8esymbolic dimension size\u95f4\u7684\u5173\u7cfb\u65ad\u8a00\u7684\u5224\u5b9a\u3002\u800c\u7531\u524d\u8ff0shape constraint\u5b9a\u4e49\u53ef\u77e5\uff0csymbolic dimension size\u95f4\u7684\u5173\u7cfb\u65ad\u8a00\u672c\u8eab\u662fshape constraint\u4e00\u4e2a\u5b9e\u4f8b\u3002\u5728\u8fd9\u91cc\u6211\u4eec\u628a\u5224\u5b9asymbolic dimension size\u95f4\u7684\u5173\u7cfb\u65ad\u8a00\u662f\u5426\u6210\u7acb\u7684\u8fd9\u4e2a\u95ee\u9898\u8f6c\u6362\u6210\u8be5\u65ad\u8a00\u662f\u5426\u662f\u5df2\u77e5\u539f\u5b50shape constraint\u7684\u7ec4\u5408\u3002\u8fd9\u91cc\u201c\u539f\u5b50\u201d\u7684\u5b9a\u4e49\u662f\u4e0d\u80fd\u591f\u901a\u8fc7\u5176\u4ed6shape constraint \u7684\u5b9e\u4f8b\u7684\u7ec4\u5408\u5f97\u5230\u3002\u4e3e\u4e2a\u4f8b\u5b50\uff0c\u5047\u8bbe\u6211\u4eec\u9700\u8981\u5224\u5b9atensor A: tensor\u662f\u5426\u6bd4tensor B: tensor\u5177\u6709\u66f4\u591a\u7684\u5143\u7d20\u4e2a\u6570\uff0c\u8fd9\u4e2a\u95ee\u9898\u7ecf\u8fc7\u8f6c\u6362\u8fc7\u4e4b\u540e\u53ef\u4ee5\u53d8\u6210dimension size\u5173\u7cfba &gt; b\u662f\u5426\u6210\u7acb\u3002\u00a0\u5728\u5b8c\u6210\u4e0a\u8ff0\u95ee\u9898\u7684\u8f6c\u6362\u4e4b\u540e\uff0c\u76ee\u524d\u5269\u4e0b\u7684\u672a\u89e3\u51b3\u7684\u95ee\u9898\u662f\uff1a\u5982\u4f55\u83b7\u5f97\u5df2\u77e5\u7ed3\u679c\u7684\u539f\u5b50shape constraint\u3002\u5177\u4f53\u6765\u8bf4\u6709\u4ee5\u4e0b\u51e0\u79cd\u65b9\u5f0f\uff1a\u7531\u7528\u6237\u63d0\u4f9b\u6216\u5728JIT\u7f16\u8bd1\u671f\u95f4\u81ea\u52a8\u6355\u83b7\u3002\u6bd4\u5982\u7528\u6237\u53ef\u4ee5\u63d0\u4f9b\u5173\u4e8e\u6a21\u578b\u8f93\u5165shape range\uff0cJIT\u7f16\u8bd1\u671f\u95f4\u53ef\u4ee5\u5c06\u6355\u83b7\u5230\u7684\u4e00\u7ec4\u8f93\u5165shape\u5f53\u4f5clikely value \u6ce8\u5165\u7f16\u8bd1\u6d41\u7a0b\u7b49\u3002\u7531op\u5b9a\u4e49\u6240\u643a\u5e26\u7684shape consraint\u4fe1\u606f\u3002\u6bd4\u5982\uff1aelementwise op\u7684\u8f93\u5165\u548c\u8f93\u51fa\u5e94\u8be5\u5177\u6709\u76f8\u540c\u7684\u5927\u5c0f\uff1bmhlo.dynamic_reshape\u00a0op\u7684\u8f93\u5165\u548c\u8f93\u51fa\u5e94\u8be5\u5177\u6709\u76f8\u540c\u7684\u5143\u7d20\u4e2a\u6570\uff1bmhlo.concatenate\u00a0op \u7684\u8f93\u5165\u548c\u8f93\u51fa\u5728\u975e\u62fc\u63a5\u7684\u8f74\u4e0a\u5e94\u8be5\u5177\u6709\u76f8\u540c\u7684\u5927\u5c0f\uff1b\u5206\u6790shape\u8ba1\u7b97\u7684IR\u6216\u8005\u901a\u8fc7\u4f20\u64ad\u5df2\u6709\u7684shape constraint\u6765\u83b7\u5f97\u65b0\u7684\u4fe1\u606f\uff0c\u6bd4\u5982\uff1a<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042364750\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>\u5728\u5145\u5206\u5229\u7528\u4e0a\u8ff0\u6765\u6e90\u539f\u5b50shape contraint\u7684\u57fa\u7840\u4e0a\uff0c\u6211\u4eec\u53ef\u4ee5\u5927\u5e45\u51cf\u5c11\u7531\u4e8eshape\u672a\u77e5\u5bfc\u81f4\u4e00\u4e9b\u4f18\u5316\u524d\u7f6e\u6761\u4ef6\u65e0\u6cd5\u5224\u65ad\uff0c\u8fdb\u800c\u5bfc\u81f4\u4f18\u5316\u65e0\u6cd5\u751f\u6548\u7684\u95ee\u9898\u3002\u00a0\u5e94\u5bf9\u6311\u62183\uff1ashape\u8ba1\u7b97\u5f00\u9500\u53ca\u66f4\u590d\u6742\u7684\u8ba1\u7b97\u56fe\u5728\u52a8\u6001shape\u8bed\u4e49\u4e0b\uff0c\u4f1a\u5f15\u5165\u66f4\u591a\u7684shape\u8ba1\u7b97\u7684\u5f00\u9500\uff0c\u6574\u4e2a\u8ba1\u7b97\u56fe\u4f1a\u53d8\u5f97\u66f4\u590d\u6742\u3002\u00a0\u5bf9\u4e8eshape\u8ba1\u7b97\u5f00\u9500\uff0cshape\u7ed3\u6784\u5316\u7ea6\u675f\u6211\u4eec\u53ef\u4ee5\u62b5\u6d88\u5927\u91cf\u91cd\u590d\u7684symbolic\u8ba1\u7b97\uff0c\u4ece\u800c\u5c3d\u53ef\u80fd\u51cf\u5c0f\u989d\u5916\u7684\u5f00\u9500\u3002\u00a0\u5bf9\u4e8e\u8ba1\u7b97\u56fe\u5316\u7b80\u800c\u8a00\uff0c\u6211\u4eec\u4e00\u65b9\u9762\u53ef\u4ee5\u901a\u8fc7\u5229\u7528shape\u7ed3\u6784\u5316\u7ea6\u675f\u6d88\u9664\u4e00\u90e8\u5206\u7684\u5197\u4f59\u8ba1\u7b97\uff0c\u6bd4\u5982\u524d\u6587\u4e2d\u63d0\u5230\u7684\u7531\u4e8eIB\u95ee\u9898\u5f15\u5165\u7684\u5927\u91cfbroadcast op\u53ef\u4ee5\u5728\u8ba1\u7b97\u56fe\u5316\u7b80\u4e2d\u6d88\u9664\u3002\u5269\u4e0b\u7684\u65e0\u6cd5\u5229\u7528shape\u7ed3\u6784\u5316\u7ea6\u675f\u6d88\u9664\u7684broadcast\u53ef\u4ee5\u8fdb\u4e00\u6b65\u5229\u7528\u4ee5\u4e0bshape\u5206\u5e03\u7ea6\u675f\u8fdb\u884c\u4f18\u5316\uff1aIB\u89e6\u53d1\uff08\u5373\u9700\u8981\u63d2\u5165\u9690\u5f0f\u7684broadcast\uff09\u7684\u6982\u7387\u8fdc\u5c0f\u4e8eIB\u4e0d\u89e6\u53d1\u7684\u6982\u7387\u3002\u901a\u8fc7\u751f\u6210\u5e26IB\u548c\u4e0d\u5e26IB\u4e24\u4e2a\u7248\u672c\u7684\uff08\u5982\u4e0b\u56fe\u6240\u793a\uff09\uff0c\u8ba9common case\u53d8\u5f97\u66f4\u5feb\uff0c\u4ece\u800c\u63d0\u5347\u671f\u671b\u6027\u80fd\uff1b<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042364751\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>\u4e3a\u4ec0\u4e48\u9700\u8981shape constraint IR\uff1fshape constraint\u5728\u52a8\u6001shape\u8bed\u4e49\u4e0b\u5f88\u6709\u7528\uff0c\u4f46\u662f\u8981\u7528\u597d\u5b83\u5374\u5e76\u4e0d\u5bb9\u6613\u3002\u7531\u4e8e\u5728\u6574\u4e2apass pipeline\u4e2d\u90fd\u53ef\u80fd\u4f1a\u4f7f\u7528\u5230shape constraint\u4fe1\u606f\uff0c\u56e0\u6b64\u6211\u4eec\u9700\u8981\u4e00\u79cd\u65b9\u5f0f\u5c06shape constraint\u4fe1\u606f\u5728\u4e0d\u540c\u7684pass\u4e4b\u95f4\u8fdb\u884c\u4f20\u9012\u3002BladeDISC\u65e9\u671f\u65f6\u4f7f\u7528\u662f\u4e00\u79cd\u9690\u5f0f\u4f20\u9012\u7684\u7b56\u7565\uff0c\u5373\u6bcf\u4e2apass\u5728\u9700\u8981\u4f7f\u7528shape constraint\u4fe1\u606f\u65f6\u4f1a\u901a\u8fc7\u5206\u6790\u4e00\u904dIR\u6765\u91cd\u5efashape constraint\u4fe1\u606f\u3002\u4e0d\u96be\u770b\u51fa\u5728\u4e0a\u8ff0\u7684\u65b9\u6848\u4e2dshape constraint\u672c\u8eab\u5e76\u4e0d\u662fIR\u4e00\u90e8\u5206\uff0c\u8fd9\u79cd\u7b56\u7565\u5e26\u6765\u7684\u95ee\u9898\u662f\uff1a\u901a\u8fc7\u5206\u6790IR\u7684\u65b9\u5f0f\u4e00\u822c\u53ea\u80fd\u591f\u91cd\u5efa\uff08\u90e8\u5206\uff09\u7ed3\u6784\u5316\u7ea6\u675f\u4fe1\u606f\uff0c\u5927\u90e8\u5206\u7684\u5206\u5e03\u7ea6\u675f\u4fe1\u606f\u65e0\u6cd5\u901a\u8fc7\u76f4\u63a5\u5206\u6790data\u8ba1\u7b97IR\u6765\u91cd\u5efa\uff0c\u800c\u5206\u5e03\u7ea6\u675f\u5bf9\u4e8e\u52a8\u6001shape\u8bed\u4e49\u4e0b\u7684\u6027\u80fd\u4f18\u5316\u540c\u6837\u5f88\u91cd\u8981\uff1b\u5728\u6574\u4e2apass pipeline\u4e2dIR\u4f1a\u7ecf\u5386\u591a\u6b21\u7684lowering \uff08\u5982TF\/Torch dialect -&gt; mhlo -&gt; lmhlo -&gt; &#8230;\uff09\uff0c\u5728\u6bcf\u6b21lowering\u7684\u8fc7\u7a0b\u4e2d\u90fd\u53ef\u80fd\u4f1a\u4e22\u5931\u4e00\u90e8\u5206shape constraint\u4fe1\u606f\uff0c\u6bd4\u5982\u4e0b\u56fe\u4e2d\u6240\u5c55\u793a\u7684tf.SplitOp\u7684\u4f8b\u5b50\u3002\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\u4e0a\u5c42\u7684tf.SplitOp\u4f1a\u88ablower\u6210\u4e00\u7cfb\u5217\u7684mhlo\u7684SliceOp\u3002\u6839\u636etf.SplitOp\u7684\u5b9a\u4e49\u6211\u4eec\u53ef\u4ee5\u77e5\u9053\u5b83\u7684\u6240\u6709\u8f93\u51fa\uff08\u5047\u8bbe\u6709N\u4e2a\uff09\u5e94\u8be5\u5177\u6709\u76f8\u540c\u7684shape\uff0c\u4e14\u8f93\u5165\u5728\u88ab\u62c6\u5206\u7684\u8f74\u4e0a\u7684dimension size\u53ef\u4ee5\u88abN\u6574\u9664\uff0c\u8fd9\u4e9b\u4fe1\u606f\u5728\u6211\u4eeclower\u5230mhlo\u65f6\u5982\u679c\u53ea\u8fdb\u884cdata computation\u7684\u8f6c\u6362\uff0c\u800c\u4e0d\u8fdb\u884cshape constraint\u4fe1\u606f\u7684\u8f6c\u6362\uff0c\u5c06\u4f1a\u88ab\u4e22\u5931\uff0c\u4ece\u800c\u4f7f\u5f97\u540e\u7eed\u7684pass\u65e0\u6cd5\u518d\u5229\u7528\u76f8\u5e94\u7684\u4fe1\u606f\u8fdb\u884c\u4f18\u5316\uff1b<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042364752\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>\u4e3a\u4e86\u89e3\u51b3\u4e0a\u8ff0\u7684\u95ee\u9898\uff0c\u6211\u4eec\u66f4\u8fdb\u4e00\u6b65\u5c06shape constraint \u4f5c\u4e3a\u7b2c\u4e00\u7b49\u516c\u6c11\u5f15\u5165\u5230IR\u4e2d\uff0c\u4f7f\u5f97\u53ef\u4ee5\u5bf9\u7ed3\u6784\u5316\u7ea6\u675f\u4fe1\u606f\u548c\u5206\u5e03\u7ea6\u675f\u4fe1\u606f\u8fdb\u884c\u7edf\u4e00\u7684\u5efa\u6a21\uff0c\u540c\u65f6\u4e5f\u786e\u4fdd\u5728\u6574\u4e2apass pipeline\u4e2d\u5404\u4e2apass\u53ef\u4ee5\u770b\u5230\u4e00\u81f4\u7684shape constraint\u4fe1\u606f\uff0c\u8fdb\u800c\u66f4\u597d\u7684\u652f\u6301\u5728\u4e0d\u540c\u7684\u9636\u6bb5\u5b8c\u6210\u5404\u81ea\u9002\u5408\u7684\u4f18\u5316\u3002\u00a0\u539f\u6587\u94fe\u63a5\uff1a<a href=\"https:\/\/link.segmentfault.com\/?enc=49n0AoFi6fgd%2Bzr8vZmE0w%3D%3D.4Ih8ZHAFdlPWO4LQV17R5YtSGBbyWTwL9CllX2WK76m7JzeyDfX8HRRdukW%2Bt8Ke\" rel=\"nofollow\">https:\/\/click.aliyun.com\/m\/10&#8230;<\/a>\u672c\u6587\u4e3a\u963f\u91cc\u4e91\u539f\u521b\u5185\u5bb9\uff0c\u672a\u7ecf\u5141\u8bb8\u4e0d\u5f97\u8f6c\u8f7d\u3002<\/p>\n<p><a href=\"https:\/\/segmentfault.com\/a\/1190000042364747\">https:\/\/segmentfault.com\/a\/1190000042364747<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u7b80\u4ecb\uff1a\u00a0\u5728\u672c\u7cfb\u5217\u5206\u4eab\u4e2d\u6211\u4eec\u5c06\u4ecb\u7ecdBladeDISC\u5728\u52a8\u6001shape\u8bed\u4e49\u4e0b\u505a\u6027\u80fd\u4f18\u5316\u7684\u4e00\u4e9b\u5b9e\u8df5\u548c\u601d\u8003\u3002\u672c\u6b21\u5206\u4eab\u7684 [&hellip;]<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[],"tags":[],"class_list":["post-10006296","post","type-post","status-publish","format-standard","hentry"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10006296","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=10006296"}],"version-history":[{"count":0,"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10006296\/revisions"}],"wp:attachment":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=10006296"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=10006296"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=10006296"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}