{"id":40170,"date":"2025-05-28T09:07:42","date_gmt":"2025-05-28T01:07:42","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/40170.html"},"modified":"2025-05-28T09:07:42","modified_gmt":"2025-05-28T01:07:42","slug":"cuda%e5%8a%a0%e9%80%9f%e7%9a%84%e7%ba%bf%e6%80%a7%e4%bb%a3%e6%95%b0%e6%b1%82%e8%a7%a3%e5%99%a8%e5%ba%93cusolver","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/40170.html","title":{"rendered":"CUDA\u52a0\u901f\u7684\u7ebf\u6027\u4ee3\u6570\u6c42\u89e3\u5668\u5e93cuSOLVER"},"content":{"rendered":"<p>cuSOLVER\u662fNVIDIA\u63d0\u4f9b\u7684GPU\u52a0\u901f\u7ebf\u6027\u4ee3\u6570\u5e93&#xff0c;\u4e13\u6ce8\u4e8e\u7a20\u5bc6\u548c\u7a00\u758f\u77e9\u9635\u7684\u9ad8\u7ea7\u7ebf\u6027\u4ee3\u6570\u8fd0\u7b97\u3002\u5b83\u5efa\u7acb\u5728cuBLAS\u548ccuSPARSE\u4e4b\u4e0a&#xff0c;\u63d0\u4f9b\u4e86\u66f4\u9ad8\u7ea7\u7684\u7ebf\u6027\u4ee3\u6570\u529f\u80fd\u3002<\/p>\n<h3>cuSOLVER\u4e3b\u8981\u529f\u80fd<\/h3>\n<h4>1. \u7a20\u5bc6\u77e9\u9635\u8fd0\u7b97<\/h4>\n<ul>\n<li>\n<p>\u77e9\u9635\u5206\u89e3:<\/p>\n<ul>\n<li>\n<p>LU\u5206\u89e3 (gesvd)<\/p>\n<\/li>\n<li>\n<p>QR\u5206\u89e3 (geqrf)<\/p>\n<\/li>\n<li>\n<p>Cholesky\u5206\u89e3 (potrf)<\/p>\n<\/li>\n<li>\n<p>\u5947\u5f02\u503c\u5206\u89e3(SVD) (gesvd)<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u7ebf\u6027\u7cfb\u7edf\u6c42\u89e3:<\/p>\n<ul>\n<li>\n<p>\u901a\u7528\u77e9\u9635\u6c42\u89e3 (gesv)<\/p>\n<\/li>\n<li>\n<p>\u5bf9\u79f0\u6b63\u5b9a\u77e9\u9635\u6c42\u89e3 (posv)<\/p>\n<\/li>\n<li>\n<p>\u6700\u5c0f\u4e8c\u4e58\u95ee\u9898\u6c42\u89e3 (gels)<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u7279\u5f81\u503c\u8ba1\u7b97:<\/p>\n<ul>\n<li>\n<p>\u5bf9\u79f0\u77e9\u9635\u7279\u5f81\u503c (syevd)<\/p>\n<\/li>\n<li>\n<p>\u975e\u5bf9\u79f0\u77e9\u9635\u7279\u5f81\u503c (geev)<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h4>2. \u7a00\u758f\u77e9\u9635\u8fd0\u7b97<\/h4>\n<ul>\n<li>\n<p>\u7a00\u758fLU\u5206\u89e3<\/p>\n<\/li>\n<li>\n<p>\u7a00\u758fQR\u5206\u89e3<\/p>\n<\/li>\n<li>\n<p>\u7a00\u758fCholesky\u5206\u89e3<\/p>\n<\/li>\n<\/ul>\n<h3>cuSOLVER API\u5c42\u6b21\u7ed3\u6784<\/h3>\n<p>cuSOLVER\u63d0\u4f9b\u4e09\u4e2a\u5c42\u6b21\u7684API&#xff1a;<\/p>\n<li>\n<p>\u9ad8\u7ea7API\u00a0(\u6700\u7b80\u5355\u6613\u7528)<\/p>\n<ul>\n<li>\n<p>cusolverDn&lt;&gt;\u00a0&#8211; \u7a20\u5bc6\u77e9\u9635\u8fd0\u7b97<\/p>\n<\/li>\n<li>\n<p>cusolverSp&lt;&gt;\u00a0&#8211; \u7a00\u758f\u77e9\u9635\u8fd0\u7b97<\/p>\n<\/li>\n<li>\n<p>cusolverRf\u00a0&#8211; \u91cd\u6784\u56e0\u5b50\u5316<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u4e2d\u7ea7API\u00a0(\u66f4\u7075\u6d3b)<\/p>\n<ul>\n<li>\n<p>\u63d0\u4f9b\u5bf9\u5de5\u4f5c\u7a7a\u95f4\u7ba1\u7406\u7684\u63a7\u5236<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u4f4e\u7ea7API\u00a0(\u6700\u9ad8\u6027\u80fd)<\/p>\n<ul>\n<li>\n<p>\u5b8c\u5168\u63a7\u5236\u8ba1\u7b97\u6d41\u7a0b<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<h3>\u57fa\u672c\u4f7f\u7528\u793a\u4f8b<\/h3>\n<h4>\u7a20\u5bc6\u77e9\u9635\u7ebf\u6027\u7cfb\u7edf\u6c42\u89e3\u793a\u4f8b<\/h4>\n<p>cpp<\/p>\n<p>#include &lt;cusolverDn.h&gt;<\/p>\n<p>\/\/ \u521b\u5efacuSOLVER\u53e5\u67c4<br \/>\ncusolverDnHandle_t cusolverH;<br \/>\ncusolverDnCreate(&amp;cusolverH);<\/p>\n<p>\/\/ \u5047\u8bbeA\u662fn\u00d7n\u77e9\u9635&#xff0c;B\u662fn\u00d7nrhs\u77e9\u9635<br \/>\nint n &#061; 3, nrhs &#061; 1;<br \/>\ndouble A[] &#061; {1.0, 2.0, 3.0, 2.0, 5.0, 2.0, 3.0, 2.0, 7.0};<br \/>\ndouble B[] &#061; {1.0, 1.0, 1.0};<\/p>\n<p>\/\/ \u8bbe\u5907\u5185\u5b58\u5206\u914d<br \/>\ndouble *d_A, *d_B, *d_work;<br \/>\nint *d_pivot, *d_info;<br \/>\ncudaMalloc(&amp;d_A, n*n*sizeof(double));<br \/>\ncudaMalloc(&amp;d_B, n*nrhs*sizeof(double));<br \/>\ncudaMalloc(&amp;d_pivot, n*sizeof(int));<br \/>\ncudaMalloc(&amp;d_info, sizeof(int));<\/p>\n<p>\/\/ \u6570\u636e\u4f20\u8f93\u5230\u8bbe\u5907<br \/>\ncudaMemcpy(d_A, A, n*n*sizeof(double), cudaMemcpyHostToDevice);<br \/>\ncudaMemcpy(d_B, B, n*nrhs*sizeof(double), cudaMemcpyHostToDevice);<\/p>\n<p>\/\/ \u8ba1\u7b97\u5de5\u4f5c\u7a7a\u95f4\u5927\u5c0f<br \/>\nint lwork;<br \/>\ncusolverDnDgetrf_bufferSize(cusolverH, n, n, d_A, n, &amp;lwork);<br \/>\ncudaMalloc(&amp;d_work, lwork*sizeof(double));<\/p>\n<p>\/\/ LU\u5206\u89e3\u548c\u6c42\u89e3<br \/>\ncusolverDnDgetrf(cusolverH, n, n, d_A, n, d_work, d_pivot, d_info);<br \/>\ncusolverDnDgetrs(cusolverH, CUBLAS_OP_N, n, nrhs, d_A, n, d_pivot, d_B, n, d_info);<\/p>\n<p>\/\/ \u5c06\u7ed3\u679c\u62f7\u8d1d\u56de\u4e3b\u673a<br \/>\ncudaMemcpy(B, d_B, n*nrhs*sizeof(double), cudaMemcpyDeviceToHost);<\/p>\n<p>\/\/ \u6e05\u7406\u8d44\u6e90<br \/>\ncudaFree(d_A); cudaFree(d_B); cudaFree(d_work); cudaFree(d_pivot); cudaFree(d_info);<br \/>\ncusolverDnDestroy(cusolverH); <\/p>\n<h4>\u7a00\u758f\u77e9\u9635\u6c42\u89e3\u793a\u4f8b<\/h4>\n<p>cpp<\/p>\n<p>#include &lt;cusolverSp.h&gt;<\/p>\n<p>\/\/ \u521b\u5efa\u53e5\u67c4<br \/>\ncusolverSpHandle_t cusolverSpH;<br \/>\ncusolverSpCreate(&amp;cusolverSpH);<\/p>\n<p>\/\/ \u521b\u5efa\u7a00\u758f\u77e9\u9635\u63cf\u8ff0\u7b26<br \/>\ncusparseMatDescr_t descrA;<br \/>\ncusparseCreateMatDescr(&amp;descrA);<br \/>\ncusparseSetMatType(descrA, CUSPARSE_MATRIX_TYPE_GENERAL);<br \/>\ncusparseSetMatIndexBase(descrA, CUSPARSE_INDEX_BASE_ZERO);<\/p>\n<p>\/\/ \u5047\u8bbeCSR\u683c\u5f0f\u7684\u7a00\u758f\u77e9\u9635<br \/>\nint n&#061;3, nnz&#061;4;<br \/>\ndouble csrValA[] &#061; {1.0, 2.0, 3.0, 4.0};<br \/>\nint csrRowPtrA[] &#061; {0, 2, 3, 4};<br \/>\nint csrColIndA[] &#061; {0, 1, 1, 2};<br \/>\ndouble b[] &#061; {1.0, 1.0, 1.0};<br \/>\ndouble x[n];<\/p>\n<p>\/\/ \u8bbe\u5907\u5185\u5b58\u5206\u914d\u548c\u6570\u636e\u4f20\u8f93&#8230;<\/p>\n<p>\/\/ \u4f7f\u7528QR\u5206\u89e3\u6c42\u89e3<br \/>\ncusolverSpDcsrlsvqr(cusolverSpH, n, nnz, descrA,<br \/>\n                   d_csrValA, d_csrRowPtrA, d_csrColIndA,<br \/>\n                   d_b, tol, reorder, d_x, &amp;singularity);<\/p>\n<p>\/\/ \u6e05\u7406\u8d44\u6e90&#8230; <\/p>\n<h3>\u6027\u80fd\u4f18\u5316\u6280\u5de7<\/h3>\n<li>\n<p>\u6279\u5904\u7406\u64cd\u4f5c&#xff1a;\u5bf9\u591a\u4e2a\u5c0f\u77e9\u9635\u4f7f\u7528\u6279\u5904\u7406API<\/p>\n<\/li>\n<li>\n<p>\u91cd\u7528\u8d44\u6e90&#xff1a;\u5728\u591a\u6b21\u8c03\u7528\u95f4\u4fdd\u6301\u53e5\u67c4\u548c\u5de5\u4f5c\u7a7a\u95f4<\/p>\n<\/li>\n<li>\n<p>\u5f02\u6b65\u6267\u884c&#xff1a;\u4f7f\u7528CUDA\u6d41\u5b9e\u73b0\u8ba1\u7b97\u4e0e\u901a\u4fe1\u91cd\u53e0<\/p>\n<\/li>\n<li>\n<p>\u9009\u62e9\u5408\u9002\u7684\u7b97\u6cd5&#xff1a;\u6839\u636e\u77e9\u9635\u7279\u6027\u9009\u62e9LU\/QR\/Cholesky<\/p>\n<\/li>\n<li>\n<p>\u6df7\u5408\u7cbe\u5ea6&#xff1a;\u5728\u652f\u6301Tensor Core\u7684GPU\u4e0a\u8003\u8651\u6df7\u5408\u7cbe\u5ea6\u8ba1\u7b97<\/p>\n<\/li>\n<h3>\u7248\u672c\u548c\u517c\u5bb9\u6027<\/h3>\n<ul>\n<li>\n<p>\u9700\u8981CUDA Toolkit\u652f\u6301<\/p>\n<\/li>\n<li>\n<p>\u4e0ecuBLAS\u3001cuSPARSE\u5e93\u914d\u5408\u4f7f\u7528<\/p>\n<\/li>\n<li>\n<p>\u4e0d\u540c\u7248\u672c\u7684API\u53ef\u80fd\u6709\u53d8\u5316&#xff0c;\u5efa\u8bae\u67e5\u9605\u5bf9\u5e94\u7248\u672c\u7684\u6587\u6863<\/p>\n<\/li>\n<\/ul>\n<p>cuSOLVER\u7279\u522b\u9002\u5408\u9700\u8981\u89e3\u51b3\u5927\u89c4\u6a21\u7ebf\u6027\u4ee3\u6570\u95ee\u9898\u7684\u5e94\u7528&#xff0c;\u5982\u79d1\u5b66\u8ba1\u7b97\u3001\u5de5\u7a0b\u4eff\u771f\u548c\u673a\u5668\u5b66\u4e60\u7b49\u9886\u57df\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb673\u6b21\uff0c\u70b9\u8d5e4\u6b21\uff0c\u6536\u85cf6\u6b21\u3002cuSOLVER\u662fNVIDIA\u63d0\u4f9b\u7684GPU\u52a0\u901f\u7ebf\u6027\u4ee3\u6570\u5e93\uff0c\u4e13\u6ce8\u4e8e\u7a20\u5bc6\u548c\u7a00\u758f\u77e9\u9635\u7684\u9ad8\u7ea7\u7ebf\u6027\u4ee3\u6570\u8fd0\u7b97\u3002\u5b83\u5efa\u7acb\u5728cuBLAS\u548ccuSPARSE\u4e4b\u4e0a\uff0c\u63d0\u4f9b\u4e86\u66f4\u9ad8\u7ea7\u7684\u7ebf\u6027\u4ee3\u6570\u529f\u80fd\u3002<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[3113,207,1578],"topic":[],"class_list":["post-40170","post","type-post","status-publish","format-standard","hentry","category-server","tag-nvidia","tag-207","tag-1578"],"yoast_head":"<!-- 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content=\"\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb673\u6b21\uff0c\u70b9\u8d5e4\u6b21\uff0c\u6536\u85cf6\u6b21\u3002cuSOLVER\u662fNVIDIA\u63d0\u4f9b\u7684GPU\u52a0\u901f\u7ebf\u6027\u4ee3\u6570\u5e93\uff0c\u4e13\u6ce8\u4e8e\u7a20\u5bc6\u548c\u7a00\u758f\u77e9\u9635\u7684\u9ad8\u7ea7\u7ebf\u6027\u4ee3\u6570\u8fd0\u7b97\u3002\u5b83\u5efa\u7acb\u5728cuBLAS\u548ccuSPARSE\u4e4b\u4e0a\uff0c\u63d0\u4f9b\u4e86\u66f4\u9ad8\u7ea7\u7684\u7ebf\u6027\u4ee3\u6570\u529f\u80fd\u3002\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.wsisp.com\/helps\/40170.html\" \/>\n<meta property=\"og:site_name\" content=\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"article:published_time\" content=\"2025-05-28T01:07:42+00:00\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" 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