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From: | Marco atzeri |
Subject: | Re: svds test failures |
Date: | Fri, 02 Sep 2011 11:12:37 +0200 |
User-agent: | Mozilla/5.0 (Windows NT 5.1; rv:6.0.1) Gecko/20110830 Thunderbird/6.0.1 |
On 9/2/2011 3:20 AM, Tatsuro MATSUOKA wrote:
Sorry I sent the previous mail before it is completed. --- On Fri, 2011/9/2, Tatsuro MATSUOKA wrote: Hello The test results perhaps depend on the kind of blas. Today I built OpenBLAS-a546694 and replace from altas-3.9.19 with OpenBLAS-a546694. For OpenBLAS %! randn ('state',42); % Initialize to make normest function reproducible %! rand ('state', 42) give warning: returning fewer singular values than requested warning: try increasing the value of sigma ***** testif HAVE_UMFPACK [u2,s2,v2,flag] = svds(A,k,0,opts); s2 = diag(s2); assert(flag,!1); assert(s2, s(k:-1:1), 1e-10); !!!!! test failed assert (s2,s (k:-1:1),1e-10) expected 38.060 38.034 38.034 38.015 38.015 38.004 38.004 but got 38.034 38.034 38.015 38.015 38.004 38.004 Dimensions don't match The seed 42 gave no error for atlas-3.9.19.
similar on cygwin for 42 lapack-3.2.2 fails atlas-3.9.47 passes
****The results are ATLAS OpenBLAS 35 OK OK 36 OK OK 37 fail OK 38 OK OK 39 OK OK 40 OK OK 41 OK OK 42 OK fail 43 fail OK 44 OK OK 45 OK OK 46 OK OK 47 OK fail 48 OK fail 49 fail OK 50 OK OK **************
the test is really depending on system library ATLAS Lapack 3.9.47 3.2.2 35 OK OK 36 OK fail 37 OK OK 38 fail fail 39 OK fail 40 OK OK 41 OK OK 42 OK fail 43 OK OK 44 OK fail 45 OK OK 46 OK OK 47 OK fail 48 fail fail 49 OK OK 50 OK OK > ************** we should look for a less critical test case
Regards Tatsuro
Marco
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