Crash in cblas
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Crash in cblas
by Volker Braun
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Hi Clint,
I'm looking at updating ATLAS in Sage and I get a crash at a the cblas_dgemm call in various places in the Sage testsuite. I've isolated a minimal testcase below. Just compile with gcc test.c -L build/lib/ -lcblas -latlas. If I rewrite it into a f77blas call then it works. This is with Atlas-3.9.77 on Fedora 17 x86_64 and an ivy bridge (i7-3770K) CPU: #include <malloc.h> enum CBLAS_ORDER {CblasRowMajor=101, CblasColMajor=102 }; enum CBLAS_TRANSPOSE {CblasNoTrans=111, CblasTrans=112, CblasConjTrans=113, AtlasConj=114}; void cblas_dgemm(const enum CBLAS_ORDER Order, const enum CBLAS_TRANSPOSE TransA, const enum CBLAS_TRANSPOSE TransB, const int M, const int N, const int K, const double alpha, const double *A, const int lda, const double *B, const int ldb, const double beta, double *C, const int ldc); int main () { int n = 44; int m = 88; double *A = (double*) malloc(n*n*sizeof(double)); double *B = (double*) malloc(n*m*sizeof(double)); double *C = (double*) malloc(n*m*sizeof(double)); cblas_dgemm(CblasRowMajor, CblasNoTrans, CblasNoTrans, n, m, n, 1.0, A, n, B, m, 0.0, C, m); return 0; } ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Math-atlas-devel mailing list Math-atlas-devel@... https://lists.sourceforge.net/lists/listinfo/math-atlas-devel |
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Re: Crash in cblas
by whaley-8
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Please post support requests to the support tracker, as outlined:
http://math-atlas.sourceforge.net/faq.html#help You'll need to post your error file as discussed at the link above, since your program works fine on my desktop. Cheers, Clint >From math-atlas-devel-bounces@... Sat Jun 16 13:15:15 2012 Return-Path: <math-atlas-devel-bounces@...> X-Original-To: whaley@... Delivered-To: whaley@... Received-SPF: pass (sog-mx-2.v43.ch3.sourceforge.com: domain of gmail.com designates 209.85.212.181 as permitted sender) client-ip=209.85.212.181; envelope-from=vbraun.name@...; helo=mail-wi0-f181.google.com; Date: Sat, 16 Jun 2012 19:16:14 +0100 From: Volker Braun <vbraun.name@...> To: "List for developer discussion, NOT SUPPORT." <math-atlas-devel@...> X-Headers-End: 1SfxXo-0005n3-Eq Subject: [atlas-devel] Crash in cblas X-BeenThere: math-atlas-devel@... X-Mailman-Version: 2.1.9 Precedence: list Reply-To: "List for developer discussion, NOT SUPPORT." <math-atlas-devel@...> List-Id: "List for developer discussion, NOT SUPPORT." <math-atlas-devel.lists.sourceforge.net> List-Unsubscribe: <https://lists.sourceforge.net/lists/listinfo/math-atlas-devel>, <mailto:math-atlas-devel-request@...?subject=unsubscribe> List-Archive: <http://sourceforge.net/mailarchive/forum.php?forum_name=math-atlas-devel> List-Post: <mailto:math-atlas-devel@...> List-Help: <mailto:math-atlas-devel-request@...?subject=help> List-Subscribe: <https://lists.sourceforge.net/lists/listinfo/math-atlas-devel>, <mailto:math-atlas-devel-request@...?subject=subscribe> Content-Type: text/plain; charset="us-ascii" Errors-To: math-atlas-devel-bounces@... X-Spam-Checker-Version: SpamAssassin 3.0.2 (2004-11-16) on mail0.cs.utsa.edu X-Spam-Level: X-Spam-Status: No, score=-2.5 required=5.0 tests=BAYES_00,RCVD_BY_IP autolearn=ham version=3.0.2 Status: RO Hi Clint, I'm looking at updating ATLAS in Sage and I get a crash at a the cblas_dgemm call in various places in the Sage testsuite. I've isolated a minimal testcase below. Just compile with gcc test.c -L build/lib/ -lcblas -latlas. If I rewrite it into a f77blas call then it works. This is with Atlas-3.9.77 on Fedora 17 x86_64 and an ivy bridge (i7-3770K) CPU: #include <malloc.h> enum CBLAS_ORDER {CblasRowMajor=101, CblasColMajor=102 }; enum CBLAS_TRANSPOSE {CblasNoTrans=111, CblasTrans=112, CblasConjTrans=113, AtlasConj=114}; void cblas_dgemm(const enum CBLAS_ORDER Order, const enum CBLAS_TRANSPOSE TransA, const enum CBLAS_TRANSPOSE TransB, const int M, const int N, const int K, const double alpha, const double *A, const int lda, const double *B, const int ldb, const double beta, double *C, const int ldc); int main () { int n = 44; int m = 88; double *A = (double*) malloc(n*n*sizeof(double)); double *B = (double*) malloc(n*m*sizeof(double)); double *C = (double*) malloc(n*m*sizeof(double)); cblas_dgemm(CblasRowMajor, CblasNoTrans, CblasNoTrans, n, m, n, 1.0, A, n, B, m, 0.0, C, m); return 0; } ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Math-atlas-devel mailing list Math-atlas-devel@... https://lists.sourceforge.net/lists/listinfo/math-atlas-devel ************************************************************************** ** R. Clint Whaley, PhD ** Assist Prof, UTSA ** www.cs.utsa.edu/~whaley ** ************************************************************************** ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Math-atlas-devel mailing list Math-atlas-devel@... https://lists.sourceforge.net/lists/listinfo/math-atlas-devel |
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